CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Matsuo Bashō
First celebrate
The flowers in your heart
Confined in winter
ISSUED AT 09:00 THURSDAY MARCH 26
VALID FROM : THURSDAY MARCH 26 ‑‑ UNTIL : TUESDAY MARCH 31 2015

GENERAL SYNOPSIS
Low trough Iceland to Italy, partly filling over the Alps while the Azores high is extending a weak ridge towards Switzerland. Some sunny spells therefore expected to spreading out today, high up at first, depending on the moderate northwesterly stream which will set up and then gradually increase until the week‑end. Humidity will however persist in the lower air layers and some very light precipitation might occur again overnight. Thus, similar scenario than today’s will reproduce on Friday. More structured disturbance is expected to crossing over the area between Saturday evening and Monday morning.
TODAY - THURSDAY MARCH 26
Morning low cloud in the valley ‑ sunny spells in the afternoon
SKY CONDITION : morning low cloud in the valley ‑ sunny spells high up ‑ afternoon sunny spells in the valley as well. Period of sunshine close to 35%.
PRECIPITATION : some light drizzle along the slopes in the morning ‑ drying in the afternoon.
WIND - ground level : variable light.
WIND - mid mountain : variable light.
WIND - high mountain : W light ‑> NW moderate.
TEMPERATURE : low +1°C - high +7°C.
ISOTHERM 0°C : 1200 ‑> 1800 ‑> 1500 m.
ISOTHERM -10°C : 3800 m.
ROAD CONDITION  : @ 06:30, humid roadways.morelive precipitation radar over the Alps
OVERNIGHT
Mainly cloudy ‑ light precipitation likely ‑ strong wind high up
SKY CONDITION :  mostly cloudy to overcast.
PRECIPITATION : light precipitation likely ‑ snow flurries above 1200 m.
WIND - aloft : NW moderate ‑> NNW strong to gale force.
TEMPERATURE : low +1°C.
FRIDAY MARCH 27
Morning low cloud in the valley ‑ becoming fairly sunny ‑ windy high up
SKY CONDITION : morning low cloud in the valley, yet partly cloudy high up ‑ low cloud dispelling in the afternoon. Period of sunshine close to 55%.
PRECIPITATION : none.
WIND - aloft : NNW strong to gale force ‑> strong.
TEMPERATURE : low 1 °C - high +10°C.
SATURDAY MARCH 28
fairly sunny in the morning ‑ becoming cloudy ‑ evening shower ‑ windy high up
SKY CONDITION : partly cloudy in the morning ‑ becoming cloudy in the afternoon. Period of sunshine close to 55%.
PRECIPITATION : late afternoon shower likely ‑ rain‑snow limit towards 1800 m.
WIND - aloft : NNW moderate to strong ‑ at times NW moderate.
TEMPERATURE : dropping lows rising highs.
EXTENDED OUTLOOK UNTIL TUESDAY MARCH 31 2015

Sunday : uncertain ‑ probably rainy in the afternoon. Monday : uncertain ‑ gloomy morning ‑ improving in the afternoon ‑ sunny spells while getting milder. Tuesday : uncertain ‑ sunny spells ‑ mild. The NW altitude stream will remain fairly strong or even strong during the three days.

Forecast reliability : poor.

ReportsAs a reminder, today in Chamonix, the sun rises at 06:23:28 and goes down at 18:52:49.
45.55 N 6.51 E - Altitude 1040 m
26 March 08:00
Temperature +1°C
Relative humidity 90%
Wind 0 km/h
Sea level pressure 1011 hpa - steady
Pressure at 1042 m 890 mb
Precipitation last 6h 0.0 mm
Skies mostly cloudy - clear above 3000 m
Visibility 2000 m
Altitude 3845 m
26 March 07:00
Temperature -12°C
Wind W 10 km/h
Altitude 2250 m
25 March 06:00
Snow depth 35 cm
Wind 10 km/h
Gusts 20 km/h
Temperature -2°C