Friday, February 20, 2015

Weather It Is (Winter Storm Noon: Update)

Good late morning/afternoon:

The precipitation with this storm has moved south, and after 10 to 12 inches of snow (25 to 30 cm) one might be tempted to say: enough! On the other hand, those who saw snow even at relatively low elevations probably wouldn't mind some more.

Yet, the break in the precipitation will allow for temperatures to rise two to three degrees, and the rise in temperatures will make any further snowfall accumulation hard to come by.  Moreover, temperatures at 500 mb will be warming about 5 C, while temperatures at 700 mb and 850 mb tack on a couple of degrees of warmth. The result will be that atmospheric temperatures become marginal for snow.

Where does this leave us with this afternoon's late precipitation? It means that areas of high elevations should receive some wet-snow, and that snow could accumulate after midnight as the lower atmosphere cools a bit.  It will be a "close-call" as they say.

Har Hermon: 20 cm
Golan: 5 cm
Sefad: Bet-Jann 5 cm
Jerusalem area: just mixed rain/snow -- just slush if that.
Gush Etzion: light accumulation at night.

There may be icing in the high elevation of the center and north Saturday night.

Warming on Sunday and Monday, with rain (snow on the Hermon) on Tuesday/Wednesday possible.

Shabbat Shalom,

Barry Lynn


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