The trick with the weather is not just reading the forecasts but understanding how they change - and they will change every day, making it significantly more challenging to pick a summit window than you might expect.
Current forecast by MeteoExploration - thanks!
Everest weather by MeteoExploration, note ensembles...
Nepal is UTC +5.45 ahead (round to +6) - in China we use NEPAL time
(so midnight 00 UTC on charts is 6am for our expedition)
Meteoexploration meteogram http://www.meteoexploration.com/forecasts/Everest/
mbar = hPA
500mb = ~5500-5850m; 450mb = 6600m; 400mb = 7500m; 300mb = ~9000m
5m/s = 10kts = 18.5km/h
15kts = 28km/h
10m/s = 20kts = 37km/h
http://expeditionweather.info/forecast
500hPa is ~5600m
http://ready.arl.noaa.gov/READYcmet.php
Everest: +30N +87E — winds 350 - 400 - 450
Stormsurf global jet streams http://www.stormsurfing.com/cgi/display_alt.cgi?a=nindi_250
250mb = 10,500m
Great Norwegian site with precip graphic yr.no
Cloud tops temperature, good for spotting cyclones
JTWC US navy for cyclones