Saturday, February 5, 2011

Colder Start To Winter Weather Event?



The clouds have had a great difficulty building into our region so far and now just hours away from the start of precipitation, we still have some breaks in the clouds being reported. The clear conditions have allowed temperatures to drop very well north of the Atlantic City Expressway with lower and mid-twenties for current temperatures. This suggests a colder start to the temperatures when the precipitation arrives. This probably means the column of air will be colder higher up, allowing for a more prolonged period of sleet mixing with freezing rain than just freezing rain. It still is not cold enough all the way up for much more than an hour of snow. We were expecting to start off from 28 or 29 degrees by dawn. Now we are starting off at 20 to 23 degrees in some cases. A southerly wind will cause the temperatures to rise ever so often once it kicks in. But the recovery may be slower than expected. It can be a substantial rise with a nice, persistent southerly flow...but the winds don't look to strong...hmmmm....

On the other side of the aisle is that the later start time means more precipitation will be falling as daylight comes upon us and usually any frozen precipitation has more difficulty sticking and temperatures respond faster when there is some solar radiation. This idea could have some merit to it and counter the fact that we have seen a significant drop in temperature tonight.

As of 11:54 p.m.:

21 in Wrightstown
23 in Mount Holly
23 in Southampton
20 in Lakehurst
28 in Belmar
33 in Atlantic City
33 in Millville
15 in Somerville
13 in Morristown
24 in Trenton
28 in Newark

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