AVN/GFS Forecast for Jerusalem (at 925mb) / Automatically Updated

Information on forecasts:

Model	GFS 3 day	GFS 0-7 day	GFS 8-15 days
Resolution	1 deg		2.5 deg
Lat	32 N		32.5 N
Long	35 E		35 E
Updated every	12 hrs (11AM & 11PM IST)

Guide to interpreting the meteograms is found at the IGES website

Surface conditions at Jerusalem (temperature & humidity) are corrected according to:
Tsurf(925mb)       ~       Tsurf(1000mb) + [T3D(925mb)-T3D(1000mb)]
RHsurf(925mb)    ~       RH3D(925mb)
This is not too accurate, but not a bad approximation either.
Snow is predicted if temperature at 850mb is below -3.5°C, or if Tsurfmax<0.5°C
Rain/Snow is predicted if temperature at 850mb is above -3.5°C but below -2°C,
or if Tsurfmin < 2°C.
For how to assess snow, see Israel Weather website.





Predicted sounding for model 0 time + 12 hrs.
Black = Temperature
Green = Dew Point




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