CHAMONIX VALLEY AND MONT-BLANC AREA WEATHER FORECAST


Masaoka Shiki
Summer rain
Drums at
The carp's head
ISSUED AT 07:50 SUNDAY JULY 24
VALID FROM : SUNDAY JULY 24 ‑‑ UNTIL : FRIDAY JULY 29 2016

GENERAL SYNOPSIS
Extended low whirling far south of Iceland, drifting towards Northern Scotland. Linked disturbance is partly dislocated due to the increasing influence of the Azores high ridge towards the Alps : there is only left a stretched area of high instability, almost stationary Mediterranean to Scandinavia; tiny altitude minimum over the Genoa Gulf, drifting east, is driving a light easterly flow over the region, backing northeast later. • In this slack context, diurnal evolution will lead again to shower or thunderstorm in the afternoon, yet less active and later than yesterday. • Centers of action being far away or with little power, outlook is uncertain on the short term, and asks for careful monitoring.
TODAY - SUNDAY JULY 24
Sunny and cool in the morning ‑ becoming cloudy and sultry with thunderstorm risk
SKY CONDITION : clear or partly cloudy in the morning ‑ becoming cloudy or mostly cloudy over the hours in the afternoon due to cumulus cloud growth. Period of sunshine close to 55%.
PRECIPITATION : thundery shower likely under the larger cumulus cloud towards the latter part of the afternoon ‑ rain‑snow limit towards 3800 m.
WIND - ground level : NE ‑> thermal SW ‑> variable light.
WIND - mid mountain : variable light ‑ NE at times in the evening.
WIND - high mountain : E ‑> NE light.
TEMPERATURE : low +9°C - high +23°C - temperature inversion toward 1300 m early in the morning.
ISOTHERM 0°C : 3900 ‑> 4100 m.
ISOTHERM -10°C : 5500 ‑> 5700 m.
OVERNIGHT
Nighttime alleviates instability ‑ clear spells ‑ dry
SKY CONDITION : cloudy to mostly cloudy at first ‑ becoming cloudy with clear spells, or even partly cloudy.
PRECIPITATION : none.
WIND - aloft : NE ‑> N light.
TEMPERATURE : low +11°C.
MONDAY JULY 25
Sunny morning ‑ cumulus cloud growth with shower risk in the afternoon
SKY CONDITION : bright sunny spells in the morning ‑ becoming locally mostly cloudy in the afternoon ‑ large cumulus cloud growth over the massifs. Period of sunshine close to 50%.
PRECIPITATION : thundery shower risk towards the latter part of the afternoon ‑ rain‑snow limit towards 3900 m.
WIND - aloft : N ‑> W light.
TEMPERATURE : low +11 °C - high +24°C.
TUESDAY JULY 26
Fairly sunny ‑ cool in the morning ‑ warm in the afternoon ‑ evening shower slight risk
SKY CONDITION : clear or partly cloudy in the morning ‑ becoming cloudy during the afternoon. Period of sunshine close to 70%.
PRECIPITATION : evening shower slight risk.
WIND - aloft : W light ‑> light to moderate.
TEMPERATURE : rising slightly.
EXTENDED OUTLOOK UNTIL FRIDAY JULY 29 2016

Wednesday to Friday : fairly sunny or even sunny on Friday ‑ cool in the morning ‑ getting hot over the days in the afternoon ‑ evening shower risk. Outlook is uncertain.

Forecast reliability : poor.

ReportsAs a reminder, today in Chamonix, the sun rises at 06:07:03 and goes down at 21:11:03.
45.55 N 6.51 E - Altitude 1040 m
24 July 07:00
Temperature +9°C
Relative humidity 92%
Wind 0 km/h
Sea level pressure 1021 hpa - steady
Pressure at 1042 m 904 mb
Precipitation last 6h 0.0 mm
Skies partly cloudy
Visibility 75000 m
Altitude 3845 m
24 July 07:00
Temperature -1°C
Wind E 15 km/h
Altitude 2250 m
24 July 06:00
Snow depth 0 cm
Wind 5 km/h
Gusts -- km/h
Temperature +9°C