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Massif Monitor
It's a Cloud based monitoring layer which can be used to view practically any data in real time. This can include data from the cpu of any device using our compiled linux service, msfmon or real time web user monitoring with live user geolocation.

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Today

TODAY – SATURDAY MAY 25 2013
Cold and unsettled – mainly cloudy – snow flurries in the morning – scattered showers later
SKY CONDITION : mostly cloudy to overcast – possible fleeting sunny spell in the afternoon. Period of sunshine close to 5%.
PRECIPITATION : continuous and light in the morning – changing for scattered showers in the afternoon, although locally heavy with possible thunderstorm – rain-snow limit towards 900 m, rising up towards 1200 m – expected snowfall towards 1800 m : 10-15 cm.
WIND - ground level : variable light.
WIND - mid mountain : variable light -> NNW light to moderate.
WIND - high mountain : S light -> NE light to moderate.
TEMPERATURE : low 0°C - high +7°C.
ISOTHERM 0°C : 1200 -> 1500 m.
ISOTHERM -10°C : 2600 -> 2800 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Cold – scattered showers – possible clear spell later
SKY CONDITION : mostly cloudy – becoming cloudy with clear spell, high up at first – possible persistent low cloud.
PRECIPITATION : scattered showers – becoming isolated – rain-snow limit towards 1100 m.
WIND - aloft : NE light to moderate -> NNW light.
TEMPERATURE : low 0°C.

Tomorrow

SUNDAY MAY 26
Cold – isolated showers – some sunny spells
SKY CONDITION : mostly cloudy to cloudy – sunny spells spreading out later although persistent growing cumulus cloud over the slopes. Period of sunshine close to 30%.
PRECIPITATION : isolated showers – rain-snow limit towards 1500 m.
WIND - aloft : mainly N – light.
TEMPERATURE : low 0 °C - high +9°C.

Synopsis

Extended low area over Europe. Minimum 1005 hpa over Northwestern Italy, almost stationary, going together with an altitude cold drop, currently over Central France and drifting southeast while filling. Linked disturbance crossing over the Alps today, driving light rain in the morning, and snow above 1000 m, followed by an unsettled tail with showers. Starting up to improving on Sunday, mainly in the afternoon, and furthermore on Monday. Southwesterly stream setting up from Tuesday, thus triggering a rainy-thundery deterioration.

Today

TODAY – FRIDAY MAY 24 2013
Cold and unsettled – showers – fleeting sunny spells
SKY CONDITION : mostly cloudy – at times, cloudy with sunny spells. Period of sunshine close to 20%.
PRECIPITATION : scattered showers, but locally heavy – more frequent in the afternoon – rain-snow limit towards 900 m, rising up towards 1200 m.
WIND - ground level : variable light to moderate – possible shower gust.
WIND - mid mountain : NW -> W light to moderate.
WIND - high mountain : NNW moderate -> W light to moderate.
TEMPERATURE : low +1°C - high +6°C.
ISOTHERM 0°C : 1100 -> 1400 m.
ISOTHERM -10°C : 2500 -> 2800 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Cold – scattered showers – more frequent in the afternoon
SKY CONDITION : mostly cloudy, then overcast.
PRECIPITATION : scattered showers in the first of the night – becoming more frequent later – rain-snow limit towards 1200 m, dropping towards 900 m.
WIND - aloft : W light to moderate -> variable light.
TEMPERATURE : low -1°C.

Tomorrow

SATURDAY MAY 25
Cold and unsettled – mainly cloudy – frequent precipitation in the morning
SKY CONDITION : mostly cloudy to overcast. Period of sunshine close to 0%.
PRECIPITATION : frequent in the morning, becoming scattered in the afternoon – locally heavy with possible thunderstorm – rain-snow limit towards 900 m, rising up towards 1200 m – expected snowfall towards 1800 m : 20-30 cm.
WIND - aloft : variable light -> NE light to moderate.
TEMPERATURE : low 0 °C - high +6°C.

Synopsis

Extended low area over Europe. Minimum 1000 hpa, Northwestern Italy, filling. Minimum 998 hpa, Eastern England, linked to an extended altitude cold drop, North Sea to Alps. The whole system is moving south while filling and driving an unsettled tail over the Northern Alps today with locally heavy showers and a rain-snow limit changing between 800 and 1200 m. Instability is expected to increasing overnight and by Saturday. Then probably starting up to improving on Sunday and furthermore on Monday. New deterioration likely from Tuesday.

Today

TODAY – THURSDAY MAY 23 2013
Morning sunny spells – afternoon deterioration – very cold
SKY CONDITION : cloudy with sunny spells in the morning – clear high up with cloud patches towards 2000-2500 m – increasing cloud from the north during the afternoon – mostly cloudy to overcast at night. Period of sunshine close to 40%.
PRECIPITATION : starting up during the afternoon, light to moderate – rain-snow limit towards 1600 m, dropping towards 1200 m.
WIND - ground level : variable light.
WIND - mid mountain : NW light to moderate.
WIND - high mountain : NW -> W moderate – moderate to strong at times.
TEMPERATURE : low +5°C - high +11°C.
ISOTHERM 0°C : 1800 -> 2000 -> 1400 m.
ISOTHERM -10°C : 3600 -> 3400 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Snow showers
SKY CONDITION : overcast or mostly cloudy.
PRECIPITATION : showers – frequent and locally fairly heavy in the first of the night – becoming scattered later – rain-snow limit towards 1200 m, dropping towards 800 m.
WIND - aloft : W moderate -> variable light -> NNW light to moderate.
TEMPERATURE : low -1°C.

Tomorrow

FRIDAY MAY 24
Cold and unsettled – showers – fleeting sunny spells
SKY CONDITION : mostly cloudy – at times, cloudy with sunny spells. Period of sunshine close to 30%.
PRECIPITATION : showers, more frequent in the afternoon – rain-snow limit towards 900 m, rising up towards 1200 m.
WIND - aloft : NNW light to moderate -> NW moderate to strong -> W moderate.
TEMPERATURE : low -1 °C - high +5°C.

Synopsis

Temporary isobaric neck over the Alps between two lows, over Southern Scandinavia and Central Italy. The Scandinavian low, 993 hpa, linked to an altitude cold drop, is moving south and expected to triggering a rainy deterioration during the afternoon. Rain-snow limit dropping below 1000 m overnight and by Friday morning. Probably not improving noticeably before Monday.

Today

TODAY – WEDNESDAY MAY 22 2013
Cool and often mainly cloudy – morning showers – few sunny spells later
SKY CONDITION : mostly cloudy – cloudy with sunny spells at times in the afternoon. Period of sunshine close to 35%.
PRECIPITATION : showers in the morning – rain-snow limit towards 1700 m, dropping – probably dry in the afternoon.
WIND - ground level : variable light.
WIND - mid mountain : NW -> N light to moderate.
WIND - high mountain : NNW moderate.
TEMPERATURE : low +6°C - high +12°C.
ISOTHERM 0°C : 1900 m.
ISOTHERM -10°C : 3700 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Cloudy at first – partly cloudy and cold by dawn
SKY CONDITION : cloudy – becoming partly cloudy.
PRECIPITATION : none.
WIND - aloft : NNW -> N -> NW moderate.
TEMPERATURE : low +1°C.

Tomorrow

THURSDAY MAY 23
Morning sunny spells – afternoon deterioration – very cold
SKY CONDITION : cloudy with sunny spells in the morning – increasing cloud during the afternoon – mostly cloudy at night. Period of sunshine close to 45%.
PRECIPITATION : showers in the afternoon, light to moderate – rain-snow limit towards 1500 m, dropping towards 1200 m.
WIND - aloft : NW moderate -> W moderate to strong.
TEMPERATURE : low +1 °C - high +8°C.

Synopsis

Low trough 1000-1008 hpa, Scandinavia to the Mediterranean, linked to a humid and cold polar air mass high up. Slight gradual improvement today as the pressure field is rising slightly from the west. Then considerable deterioration expected while a low and a new altitude cold drop are coming in over France by Thursday evening. Rain-snow limit possibly dropping below 1000 m by Friday. Probably not improving noticeably during the week-end.

Today

TODAY – TUESDAY MAY 21 2013
Cool – often mainly cloudy – few sunny spells – shower risk
SKY CONDITION : mostly cloudy – cloudy with fleeting sunny spells at times later in the morning – cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 30%.
PRECIPITATION : shower risk, higher in the afternoon – rain-snow limit towards 1700 m.
WIND - ground level : variable light.
WIND - mid mountain : mainly W – light.
WIND - high mountain : W light to moderate -> NNW moderate to strong.
TEMPERATURE : low +6°C - high +11°C.
ISOTHERM 0°C : 1900 -> 2100 m.
ISOTHERM -10°C : 3500 -> 3700 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Mainly cloudy – almost cold – showers later
SKY CONDITION : cloudy, then mostly cloudy – becoming overcast towards the latter part of the night.
PRECIPITATION : showers coming in from the north towards the latter part of the night – rain-snow limit towards 1800 m.
WIND - aloft : NNW moderate to strong -> NW moderate.
TEMPERATURE : low +5°C.

Tomorrow

WEDNESDAY MAY 22
Cool and often mainly cloudy – morning showers – few sunny spells later
SKY CONDITION : mostly cloudy – becoming cloudy with sunny spells in the afternoon. Period of sunshine close to 30%.
PRECIPITATION : showers in the morning – rain-snow limit towards 1800 m, dropping – probably dry in the afternoon.
WIND - aloft : NW light to moderate -> moderate to strong.
TEMPERATURE : low +5 °C - high +12°C.

Synopsis

Flat low over the Alps, linked to an altitude cold low, Switzerland and Southern Germany. Which pattern, favorable to diurnal instability and cloud increase, is expected to ruling until Wednesday. More considerable deterioration expected thereafter while a low and a new altitude cold drop are coming in over Northeastern France by Thursday evening. Rain-snow limit possibly dropping below 1000 m by Friday.

Today

TODAY – MONDAY MAY 20 2013
Diurnal instability – bright sunny spells – afternoon shower slight risk
SKY CONDITION : cloudy with sunny spells – partly cloudy at times towards the middle of the day – cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 65%.
PRECIPITATION : late afternoon shower slight risk – rain-snow limit towards 1700 m.
WIND - ground level : variable light.
WIND - mid mountain : WSW light – light to moderate at times.
WIND - high mountain : WSW light to moderate – moderate at times.
TEMPERATURE : low +5°C - high +13°C.
ISOTHERM 0°C : 1600 -> 2000 -> 1900 m.
ISOTHERM -10°C : 3300 -> 3600 -> 3400 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Mainly cloudy – almost cold
SKY CONDITION : mostly cloudy – cloudy with clear spells at times.
PRECIPITATION : slight shower risk – rain-snow limit towards 1600 m.
WIND - aloft : WSW light to moderate.
TEMPERATURE : low +4°C.

Tomorrow

TUESDAY MAY 21
Diurnal instability – often mainly cloudy – few morning sunny spells – shower risk
SKY CONDITION : mostly cloudy – cloudy with sunny spells at times in the morning – cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 40%.
PRECIPITATION : shower risk, higher in the afternoon – rain-snow limit towards 1800 m.
WIND - aloft : WSW – NW light to moderate.
TEMPERATURE : low +4 °C - high +13°C.

Synopsis

Flat low over the Alps, linked to an altitude cold low, Spain to Southern Germany, currently filling slowly. Which pattern, favorable to diurnal instability, is expected to ruling until Wednesday. Deterioration thereafter due to a new altitude cold drop coming in over France by Thursday evening and over Switzerland by Friday.

Today

TODAY – SUNDAY MAY 19 2013
Almost cold – rainy, then sunny spells – instability resuming in the afternoon
SKY CONDITION : overcast or mostly cloudy early in the morning – fleeting sunny spells towards the middle of the day – considerable cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 25%.
PRECIPITATION : light to moderate early in the morning, then dry – locally heavy showers resuming towards the latter part of the afternoon – rain-snow limit towards 1200 m in the morning, rising up towards 1600 m in the afternoon.
WIND - ground level : variable light.
WIND - mid mountain : SE light -> W light to moderate.
WIND - high mountain : SE moderate to strong -> variable light -> WSW light to moderate.
TEMPERATURE : low +2°C - high +11°C.
ISOTHERM 0°C : 1500 -> 1900 m.
ISOTHERM -10°C : 3300 -> 3600 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Cloudy – shower ending – almost cold by dawn
SKY CONDITION : mainly cloudy at first – becoming cloudy with clear spells, then mostly cloudy.
PRECIPITATION : showers ending early in the night.
WIND - aloft : WSW light to moderate -> W moderate.
TEMPERATURE : low +2°C.

Tomorrow

MONDAY MAY 20
Diurnal instability – fairly sunny – afternoon shower slight risk
SKY CONDITION : partly cloudy to cloudy with sunny spells – cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 75%.
PRECIPITATION : late afternoon shower slight risk – rain-snow limit towards 1800 m.
WIND - aloft : W moderate -> WSW light to moderate.
TEMPERATURE : low +2 °C - high +15°C.

Synopsis

Persistent low pattern over Western Europe. Minimum 1005 hpa, Western France, linked to an altitude cold drop. The whole system is filling slightly and moving towards Germany, driving a humid, unsettled and cold southeasterly, then westerly, stream towards the Alps today. Further outlook shows a relative improvement from Monday until Wednesday, with diurnal instability however. New deterioration then expected due to a new altitude cold drop coming in over France by Thursday and Friday.

Today

TODAY – SATURDAY MAY 18 2013
Sunny spell, then thick high cloud – f?hn wind gale, locally, in the afternoon
SKY CONDITION : bright sunny spell early in the morning, then thick high cloud running over from the south. Period of sunshine close to 35%.
PRECIPITATION : none before the evening.
WIND - ground level : light to moderate f?hn wind at first, increasing – locally gale force in the afternoon – decreasing later.
WIND - mid mountain : SE light und moderate – strong at times in the afternoon.
WIND - high mountain : SSW -> S moderate to strong – strong at times.
TEMPERATURE : low +1°C - high +17°C.
ISOTHERM 0°C : 2200 -> 2800 -> 2200 m.
ISOTHERM -10°C : 3800 -> 4400 -> 4000 m.


chamonixmeteo.com

Overnight

OVERNIGHT
F?hn wind ending – precipitation beginning – disturbance crossing over – getting cooler
SKY CONDITION : mostly cloudy, then overcast.
PRECIPITATION : running over from the south early in the night – locally heavy towards the latter part of the night – rain-snow limit towards 2000 m dropping towards 1500 m.
WIND - aloft : S moderate to strong -> SE moderate.
TEMPERATURE : low +5°C.

Tomorrow

SUNDAY MAY 19
Cool – showers, then sunny spells – instability resuming in the afternoon
SKY CONDITION : overcast or mostly cloudy early in the morning – sunny spells spreading out towards the middle of the day – considerable cumulus cloud growth over the slopes in the afternoon. Period of sunshine close to 25%.
PRECIPITATION : remaining precipitation early in the morning, then dry – locally heavy showers resuming towards the latter part of the afternoon – rain-snow limit towards 1600 m.
WIND - aloft : SE moderate -> variable light -> SW light to moderate.
TEMPERATURE : low +5 °C - high +12°C.

Synopsis

Low pattern over Western Europe. Minimum 1002 hpa, close north to the Pyrénées, linked to an altitude cold drop. The whole system is filling while drifting north, but still driving a humid and unsettled southerly stream towards the Alps with a locally gale force temporary f?hn wind effect over the northern slopes today. Very active rainy disturbance then crossing over the area overnight. Further outlook, still uncertain by now, doesn’t show any noticeable long lasting improvement before the middle of the week.

Today

TODAY – FRIDAY MAY 17 2013
Gloomy morning – improving slightly in the afternoon
SKY CONDITION : overcast in the morning – becoming mostly cloudy – afternoon fleeting sunny spells likely. Period of sunshine close to 15%.
PRECIPITATION : continuous in the morning, changing for showers, gradually scattered – fairly heavy showers resuming from the south towards the evening – rain-snow limit towards 1500 m, rising up towards 1800 m – expected snowfall towards 2500 m : 20-50 cm.
WIND - ground level : variable light – possible f?hn wind puffs in the afternoon.
WIND - mid mountain : SE light.
WIND - high mountain : SSE moderate to strong -> S light to moderate.
TEMPERATURE : low +5°C - high +12°C.
ISOTHERM 0°C : 1800 -> 2100 m.
ISOTHERM -10°C : 3600 -> 3800 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Locally heavy showers at first
SKY CONDITION : mostly cloudy – locally cloudy with clear spell towards the end of the night.
PRECIPITATION : frequent and locally heavy showers running over from the south in the first part of the night – rain-snow limit towards 2000 m – probably dry towards the latter part of the night.
WIND - aloft : S light to moderate -> SSW moderate to strong.
TEMPERATURE : low +3°C.

Tomorrow

SATURDAY MAY 18
Sunny spell early in the morning, then thick high cloud – strong f?hn wind likely
SKY CONDITION : sunny spells likely early in the morning, then thick high cloud running over from the south. Period of sunshine close to 20%.
PRECIPITATION : probably none.
WIND - aloft : SSW moderate to strong -> S fort – f?hn wind gale likely in the valley.
TEMPERATURE : low +3 °C - high +17°C.

Synopsis

Complex low 995-998 hpa, Spain to Germany, fed by polar air over Western France high up. The whole system is expected to filling while isolating as a low with altitude cold drop over France by Saturday. Linked disturbance still waving over the Alps in the morning in a southerly stream, then moving away eastward, while instability is expected to resuming from the south towards the evening. F?hn wind gale likely on Saturday. Further outlook, very uncertain, doesn’t show any noticeable improvement.

Today

TODAY – THURSDAY MAY 16 2013
Mainly cloudy – scattered showers
SKY CONDITION : mostly cloudy to overcast – possible fleeting sunny spell in the afternoon. Period of sunshine close to 5%.
PRECIPITATION : scattered showers running over from the south – rain-snow limit towards 2400 m, dropping towards 2100 m.
WIND - ground level : f?hn wind puffs at times.
WIND - mid mountain : SE light to moderate.
WIND - high mountain : S moderate – moderate to strong at times.
TEMPERATURE : low +10°C - high +12°C.
ISOTHERM 0°C : 2800 -> 2400 m.
ISOTHERM -10°C : 4300 -> 4100 m.


chamonixmeteo.com

Overnight

OVERNIGHT
More frequent showers
SKY CONDITION : mostly cloudy, then overcast.
PRECIPITATION : showers becoming more frequent and heavier – rain-snow limit dropping towards 1700 m.
WIND - aloft : S -> SE moderate to strong.
TEMPERATURE : low +7°C.

Tomorrow

FRIDAY MAY 17
Rainy morning – improving slightly in the afternoon
SKY CONDITION : overcast in the morning – becoming mostly cloudy – afternoon fleeting sunny spells likely. Period of sunshine close to 10%.
PRECIPITATION : continuous in the morning – showers in the afternoon, becoming scattered – rain-snow limit rising up towards 2000 m.
WIND - aloft : SE moderate to strong -> S light to moderate.
TEMPERATURE : low +7 °C - high +12°C.

Synopsis

Extended low area over Western Europe. Thalweg 987-998 hpa, north of Scotland to the Mediterranean, fed by a polar air mass high up, isolating as a low over France by Saturday. Linked disturbance waving over the Alps. However, light rainy spells alternating in turns with f?hn wind periods over the northern slopes. Precipitation getting heavier and more frequent in the afternoon and until Friday morning. Further outlook, very uncertain, doesn’t show any noticeable improvement before Monday.

Today

TODAY – WEDNESDAY MAY 15 2013
Uncertain – rainy spells alternating with f?hn wind periods
SKY CONDITION : overcast or mostly cloudy – cloudy with fleeting sunny spells at times in the afternoon. Period of sunshine close to 15%.
PRECIPITATION : showers running over from the south – probably fairly rare in the afternoon – rain-snow limit towards 2400 m.
WIND - ground level : gusty f?hn wind in the afternoon.
WIND - mid mountain : ESE light to moderate.
WIND - high mountain : SW -> S moderate to strong.
TEMPERATURE : low +9°C - high +15°C.
ISOTHERM 0°C : 2800 -> 2600 m.
ISOTHERM -10°C : 4300 -> 4100 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Cloudy with f?hn wind
SKY CONDITION : mostly cloudy – at times, cloudy with f?hn wind clear spell.
PRECIPITATION : probably none.
WIND - aloft : S moderate to strong -> SSE moderate – gusty f?hn wind in the valley.
TEMPERATURE : low +8°C.

Tomorrow

THURSDAY MAY 16
Changeable and mild – decreasing f?hn wind – possible thundery showers towards the evening
SKY CONDITION : mostly cloudy. Period of sunshine close to 0%.
PRECIPITATION : probably dry in the morning – thundery rain running over from the south in the afternoon – rain-snow limit dropping towards 2100 m.
WIND - aloft : SSE moderate – morning f?hn wind in the valley.
TEMPERATURE : low +8 °C - high +12°C.

Synopsis

Extended low area over the British Isles, driving a humid southerly stream over France and Switzerland. Minimum 987 hpa, England, drifting north. Linked disturbance waving over the Western Alps. However, light rainy spells should alternate in turns with f?hn wind periods over the northern slopes, probably until Thursday morning. Rain probably getting heavier and more frequent between Thursday afternoon and Friday morning. Probably starting up to improving by Friday afternoon. Outlook is uncertain.

Today

TODAY – TUESDAY MAY 14 2013
Sunny – cold in the morning – almost warm in the afternoon
SKY CONDITION : clear or partly cloudy – afternoon cumulus cloud over the slopes. Period of sunshine close to 90%.
PRECIPITATION : none.
WIND - ground level : variable light – afternoon thermal breeze- evening f?hn wind puffs.
WIND - mid mountain : SW light -> S light to moderate.
WIND - high mountain : WSW -> SSW light to moderate.
TEMPERATURE : low +3°C - high +20°C – temperature inversion toward 1400 m.
ISOTHERM 0°C : 2800 -> 2900 m.
ISOTHERM -10°C : 4300 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Becoming cloudy with f?hn wind
SKY CONDITION : partly cloudy, then clear, in the first part of the night – becoming cloudy – high cloud coming in from the south later in the night.
PRECIPITATION : none.
WIND - aloft : SSW light to moderate -> moderate to strong – moderate f?hn wind in the valley.
TEMPERATURE : low +12°C.

Tomorrow

WEDNESDAY MAY 15
Locally fairly strong f?hn wind – changeable and mild
SKY CONDITION : thick high cloud running over from the south – f?hn wind sunny spells. Period of sunshine close to 35%.
PRECIPITATION : none.
WIND - aloft : SSW moderate to strong -> S moderate – fairly strong f?hn wind in the valley.
TEMPERATURE : low +12 °C - high +16°C.

Synopsis

Flat high over Southern France and the Mediterranean. Low 982 hpa, north of Scotland, making the altitude stream to backing southwest today, then south on Wednesday. Sunny and warm today, then f?hn wind pattern setting up towards the evening. F?hn wind expected to blow fairly strong on Wednesday and to decreasing by Thursday, allowing for disturbances to coming in over the area. Which schedule is still uncertain by now.

Today

TODAY – MONDAY MAY 13 2013
Cloudy and cool in the morning – sunny and mild in the afternoon
SKY CONDITION : cloud patches crossing over early in the morning – becoming partly cloudy in the afternoon with cumulus cloud over the slopes. Period of sunshine close to 75%.
PRECIPITATION : none.
WIND - ground level : variable light – afternoon thermal breeze.
WIND - mid mountain : NW light.
WIND - high mountain : WNW moderate to strong -> WNW moderate.
TEMPERATURE : low +5°C - high +16°C.
ISOTHERM 0°C : 2300 -> 2700 m.
ISOTHERM -10°C : 3900 -> 4300 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Clear – cold by dawn
SKY CONDITION : partly cloudy, then clear.
PRECIPITATION : none.
WIND - aloft : WNW moderate -> WSW light to moderate.
TEMPERATURE : low +3°C – temperature inversion toward 1500 m.

Tomorrow

TUESDAY MAY 14
Sunny – cold in the morning – almost warm in the afternoon
SKY CONDITION : clear or partly cloudy – some afternoon cumulus cloud over the slopes. Period of sunshine close to 95%.
PRECIPITATION : none.
WIND - aloft : WSW light to moderate -> SSW moderate – evening f?hn wind puffs in the valley.
TEMPERATURE : low +3 °C - high +20°C – temperature inversion toward 1500 m.

Synopsis

Azores high ridge reaching Switzerland towards 1020 hpa, weakening overnight. Low 979 hpa southeast of Iceland, drifting towards Scotland and making the altitude stream to backing southwest on Tuesday, then south on Wednesday. Cloud patches crossing over the area in the morning, then improving sunny while getting milder. Keeping on to getting milder and sunnier on Tuesday, then changing for a f?hn wind pattern during the Tuesday to Wednesday night. F?hn wind possibly decreasing by Thursday evening, allowing disturbances to coming in.

Today

TODAY – SUNDAY MAY 12 2013
Cool and unsettled – showers, then sunny spells – increasing wind to strong high up
SKY CONDITION : mostly cloudy, although with a sunny spell high up early in the morning – becoming cloudy with sunny spells during the afternoon. Period of sunshine close to 40%.
PRECIPITATION : light and scattered showers crossing over the area in the morning – rain-snow limit dropping towards 1400 m.
WIND - ground level : variable light.
WIND - mid mountain : W light -> NNW light to moderate.
WIND - high mountain : WNW moderate -> NNW strong.
TEMPERATURE : low +5°C - high +11°C.
ISOTHERM 0°C : 1800 -> 2000 m.
ISOTHERM -10°C : 3500 -> 3700 m.


chamonixmeteo.com

Overnight

OVERNIGHT
Improving – cold by dawn – strong wind high up
SKY CONDITION : becoming quickly clear or partly cloudy – cloud patches possibly crossing over towards the end of the night.
PRECIPITATION : none.
WIND - aloft : NNW strong -> NW moderate to strong.
TEMPERATURE : low +3°C.

Tomorrow

MONDAY MAY 13
Fairly sunny – cool in the morning – mild in the afternoon
SKY CONDITION : clear or partly cloudy – cloud patches crossing over in the afternoon. Period of sunshine close to 85%.
PRECIPITATION : none.
WIND - aloft : NW moderate to strong -> WNW moderate.
TEMPERATURE : low +3 °C - high +16°C.

Synopsis

Azores high ridge reaching Switzerland towards 1018 hpa. Low trough, Greenland to the Netherlands, driving a humid polar air mass as far as the Northern Alps. Linked disturbance, fairly weak in its southern part, is crossing over the area in the morning, followed by a moderately active tail in the afternoon. More noticeable improvement is expected by Monday and Tuesday, while getting noticeably milder. Changing for a f?hn wind pattern by Wednesday, Thursday and, probably, Friday.

Today

TODAY – FRIDAY MAY 10 2013
Gloomy morning – fleeting sunny spells later – cooler than seasonal average
SKY CONDITION : overcast or mostly cloudy – becoming cloudy with fleeting sunny spells towards the latter part the afternoon. Period of sunshine close to 15%.
PRECIPITATION : continuous and locally heavy in the morning, then showers becoming scattered – rain-snow limit towards 1900 m – expected snowfall towards 2800 m : 20-30 cm – precipitation ending soon in the afternoon.
WIND - ground level : variable light.
WIND - mid mountain : NW -> NNW light to moderate.
WIND - high mountain : SW moderate -> W light to moderate.
TEMPERATURE : low +8°C - high +11°C.
ISOTHERM 0°C : 2200 -> 2300 m.
ISOTHERM -10°C : 4100 -> 4200 m.


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Overnight

OVERNIGHT
Improving – cold by the end of the night
SKY CONDITION : cloudy – becoming clear or partly cloudy high up – locally persistent cloud patches.
PRECIPITATION : none.
WIND - aloft : W light to moderate.
TEMPERATURE : low +4°C.

Tomorrow

SATURDAY MAY 11
Fairly sunny – cooler than seasonal average
SKY CONDITION : clear or partly cloudy early in the morning, with low cloud patches – becoming cloudy with sunny spells in the afternoon due to cumulus cloud growth over the slopes. Period of sunshine close to 65%.
PRECIPITATION : late afternoon shower slight risk.
WIND - aloft : W -> NW light to moderate.
TEMPERATURE : low +4 °C - high +15°C.

Synopsis

Low 995 hpa, east close to Scotland, drifting northeast while filling. Linked cold front moving slowly away eastwards in the morning. Azores high ridge extending east and reaching Switzerland towards 1017 hpa in the afternoon, triggering a cool improvement until Saturday. Resuming instability by Sunday while remaining cooler than seasonal average as the pressure field is lowering over Northern Italy. More noticeable improvement expected by Monday and Tuesday. Probably changing for a f?hn wind pattern by Wednesday.

Today

TODAY – FRIDAY MAY 10 2013
Gloomy morning – fleeting sunny spells later – cooler than seasonal average
SKY CONDITION : overcast or mostly cloudy – becoming cloudy with fleeting sunny spells towards the latter part the afternoon. Period of sunshine close to 15%.
PRECIPITATION : continuous and locally heavy in the morning, then showers becoming scattered – rain-snow limit towards 1900 m – expected snowfall towards 2800 m : 20-30 cm – precipitation ending soon in the afternoon.
WIND - ground level : variable light.
WIND - mid mountain : NW -> NNW light to moderate.
WIND - high mountain : SW moderate -> W light to moderate.
TEMPERATURE : low +8°C - high +11°C.
ISOTHERM 0°C : 2200 -> 2300 m.
ISOTHERM -10°C : 4100 -> 4200 m.


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Overnight

OVERNIGHT
Improving – cold by the end of the night
SKY CONDITION : cloudy – becoming clear or partly cloudy high up – locally persistent cloud patches.
PRECIPITATION : none.
WIND - aloft : W light to moderate.
TEMPERATURE : low +4°C.

Tomorrow

SATURDAY MAY 11
Fairly sunny – cooler than seasonal average
SKY CONDITION : clear or partly cloudy early in the morning, with low cloud patches – becoming cloudy with sunny spells in the afternoon due to cumulus cloud growth over the slopes. Period of sunshine close to 65%.
PRECIPITATION : late afternoon shower slight risk.
WIND - aloft : W -> NW light to moderate.
TEMPERATURE : low +4 °C - high +15°C.

Synopsis

Low 995 hpa, east close to Scotland, drifting northeast while filling. Linked cold front moving slowly away eastwards in the morning. Azores high ridge extending east and reaching Switzerland towards 1017 hpa in the afternoon, triggering a cool improvement until Saturday. Resuming instability by Sunday while remaining cooler than seasonal average as the pressure field is lowering over Northern Italy. More noticeable improvement expected by Monday and Tuesday. Probably changing for a f?hn wind pattern by Wednesday.

Today

TODAY – THURSDAY MAY 09 2013
Mainly cloudy, then rainy – getting colder in the afternoon
SKY CONDITION : cloudy with sunny spells at times in the morning – otherwise mostly cloudy, then overcast. Period of sunshine close to 25%.
PRECIPITATION : shower still possible early in the morning, then dry – showers resuming in the afternoon, getting moderate later or with possible local thunderstorm – rain-snow limit dropping towards 2500 m.
WIND - ground level : variable light.
WIND - mid mountain : S -> W light.
WIND - high mountain : W -> WSW moderate to strong – moderate at times.
TEMPERATURE : low +10°C - high +18°C.
ISOTHERM 0°C : 2900 -> 3000 -> 2700 m.
ISOTHERM -10°C : 4500 -> 4700 -> 4400 m.


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Overnight

OVERNIGHT
Rainy
SKY CONDITION : mostly cloudy to overcast.
PRECIPITATION : moderate at first, then locally heavy towards the latter part of the night – rain-snow limit towards 2000 m.
WIND - aloft : WSW -> SW moderate.
TEMPERATURE : low +6°C.

Tomorrow

FRIDAY MAY 10
Gloomy morning – fleeting sunny spells later – cooler than seasonal average
SKY CONDITION : overcast or mostly cloudy – becoming cloudy with fleeting sunny spells towards the latter part the afternoon. Period of sunshine close to 10%.
PRECIPITATION : continuous and locally heavy in the morning, the showers becoming scattered – rain-snow limit dropping towards 1800 m.
WIND - aloft : SW moderate -> WSW light to moderate.
TEMPERATURE : low +6 °C - high +12°C.

Synopsis

Flat high, Mediterranean to Alps. Low 987 hpa, Ireland, drifting east-northeast, driving a slightly unsettled westerly to southwesterly stream in the morning. Linked cold front coming in over the area in the afternoon, thus causing fairly frequent precipitation until Friday morning before a cool improvement by Friday afternoon and Saturday. Resuming instability by Sunday while remaining cooler than seasonal average. More noticeable improvement expected by Monday and moreover by Tuesday. Outlook is uncertain.

Today

TODAY – WEDNESDAY MAY 08 2013
Sunny morning – cloudy and very mild in the afternoon
SKY CONDITION : clear, then partly cloudy – high and medium cloud patches coming in from the west – becoming cloudy in the afternoon – cumulus cloud growing over the slopes. Period of sunshine close to 70%.
PRECIPITATION : none.
WIND - ground level : variable light – light to moderate afternoon thermal breeze.
WIND - mid mountain : variable light.
WIND - high mountain : WNW -> W moderate.
TEMPERATURE : low +2°C - high +22°C – temperature inversion toward 1400 m.
ISOTHERM 0°C : 2900 -> 3100 m.
ISOTHERM -10°C : 4400 -> 4500 m.


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Overnight

OVERNIGHT
Changeable and mild – dry at first – showers later
SKY CONDITION : cloudy with clear spells at first – becoming mostly cloudy.
PRECIPITATION : light scattered showers from the middle of the night – rain-snow limit towards 2700 m.
WIND - aloft : W moderate -> WSW moderate to strong.
TEMPERATURE : low +7°C.

Tomorrow

THURSDAY MAY 09
Getting colder – mainly cloudy, then rainy
SKY CONDITION : mostly cloudy to overcast – cloudy with fleeting sunny spells at times in the morning – overcast in the afternoon. Period of sunshine close to 15%%.
PRECIPITATION : light scattered showers in the morning – becoming frequent and moderate to heavy in the afternoon – rain-snow limit dropping towards 2500 m.
WIND - aloft : WSW moderate to strong -> moderate.
TEMPERATURE : low +7 °C - high +16°C.

Synopsis

Flat high over the Alps, allowing for a fairly sunny weather today. Low 992 hpa deepening over Ireland, then drifting slowly northeast. Linked cold front reaching the area overnight and slowly crossing over thus causing fairly frequent precipitation until Friday morning before a cool improvement by Friday afternoon and Saturday. Further outlook is uncertain.

Today

TODAY – TUESDAY MAY 07 2013
Fairly sunny – very mild in the afternoon
SKY CONDITION : clear, then partly cloudy or cloudy at times – high cloud crossing over and afternoon cumulus cloud over the slopes. Period of sunshine close to 70%.
PRECIPITATION : probably none.
WIND - ground level : variable light – afternoon thermal breeze, locally moderate.
WIND - mid mountain : S -> WNW light.
WIND - high mountain : W -> NW light to moderate.
TEMPERATURE : low +5°C - high +19°C.
ISOTHERM 0°C : 2500 -> 2600 m.
ISOTHERM -10°C : 4000 -> 4200 m.


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Overnight

OVERNIGHT
Partly cloudy – cool by dawn
SKY CONDITION : cloudy early in the night, then partly cloudy.
PRECIPITATION : none.
WIND - aloft : NW light to moderate -> moderate.
TEMPERATURE : low +3°C.

Tomorrow

WEDNESDAY MAY 08
Sunny morning – cloudy and very mild in the afternoon – shower risk at night
SKY CONDITION : partly cloudy – high cloud crossing over from the west – locally cloudy in the afternoon – cumulus cloud growing over the slopes while. Period of sunshine close to 70%.
PRECIPITATION : late afternoon shower risk – rain-snow limit towards 2700 m.
WIND - aloft : NW -> W moderate.
TEMPERATURE : low +3 °C - high +22°C.

Synopsis

Flat high over the Alps, favoring diurnal instability and probably persisting until the end of the week. The air mass has gotten dryer due to a slight pressure increase from the west. The current lull is expected to persisting until Wednesday morning. Although very uncertain, the forecast envisions instability to increasing from Wednesday afternoon and a rainy spell between Thursday afternoon and Friday morning before a new improvement by Friday afternoon and Saturday.

Today

TODAY – MONDAY MAY 06 2013
Unsettled – often mainly cloudy – scattered showers
SKY CONDITION : often mostly cloudy – at times, cloudy with fleeting sunny spells. Period of sunshine close to 25%.
PRECIPITATION : light and scattered – heavier shower, locally in the afternoon – rain-snow limit towards 2300 m.
WIND - ground level : variable light.
WIND - mid mountain : variable -> NW light.
WIND - high mountain : SE -> WSW light.
TEMPERATURE : low +9°C - high +15°C.
ISOTHERM 0°C : 2600 m.
ISOTHERM -10°C : 4100 m.


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Overnight

OVERNIGHT
Improving
SKY CONDITION : mostly cloudy, then cloudy with clear spells.
PRECIPITATION : none.
WIND - aloft : WSW light -> W light to moderate.
TEMPERATURE : low +4°C.

Tomorrow

TUESDAY MAY 07
Fairly sunny – cumulus cloud growing over the slopes in the afternoon
SKY CONDITION : clear or partly cloudy – afternoon cumulus cloud over the slopes. Period of sunshine close to 80%.
PRECIPITATION : none.
WIND - aloft : W -> WNW light to moderate.
TEMPERATURE : low +4 °C - high +20°C.

Synopsis

Flat high over the Alps, favoring diurnal instability and probably persisting until the end of the week. Humid air coming in over the Alps from Italy is temporarily increasing instability today with precipitation likely anytime of the day. Improving by Tuesday and Wednesday while a more pronounced disturbance is expected to crossing over between Wednesday evening and Thursday evening. New improvement likely with sunny condition by Friday and Saturday.

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