Ph.D. Student - Earth System Science (UC Irvine), B.Sc. - Atmospheric Sciences (Cornell University)
By: Zachary Labe , 9:39 PM GMT on December 14, 2007
Well a major winter storm is headed east towards the northeast. This storm is going to be difficult to forecast due to the invasion of the warm air coming from the gulf of mexico. Precipitation types are still not yet certain.
Current Radar shows precipitation breaking out over central plains and Ohio valley all headed northeast. The low will be tracking west of the mountains.
***NEW update as of 1030am...
Well central pennyslvania has suffered horribly. Here in Harrisburg we started with a half inch of sleet, then we picked up another .5inch of frz rain. Tree limbs are down and power is out to at least 30,000 in my county. The highest snow total I saw was out near Bradford with about 5inch of snow. I also think those numbers will rise with lake effect and wrap around snow showers. In the snowbelts they may see over 3inches of snow and in the central part about an inch. Maybe a coating in Philadelphia today. I doubt it though. I noticed already many locations have just changed to snow including Altoona, State College, Clearfield, Johnstown, Bradford, Du Bois, and Erie. This is caused by the coastal deeping low that is bringing in cooler air aloft. This transition will take place across the state from west to east. It will be interesting to see how much snow wraps around this system.
I will have another update soon...
***More updates are coming throughout the day...
Regional Preliminary Forecast for Pennyslvania...
Winter Storm Warning for Laural Highlands...
Winter Storm Warning for northern parts of the state...
Winter Storm Watch for eastern areas...
Winter Weather Advisory for central through northeastern areas...
High Wind Watch for eastern areas...
Eastern- (Allentown, Southern Poconos)-
totals- 1inch sleet, .25inch of frz rain
South Central (Harrisburg, York, Lancaster)(my home)-
totals- 1nch sleet, .25-.5 of frz rain
totals- trace of sleet, .1 of frz rain, .5 rain
Central- (State College)-
totals- 3inch of sleet, .5inch of frz rain
Northern- (Bradford, Williamsport, Erie)-
totals- 5-9inch of snow, 1inch of sleet
totals- .5inch of sleet, .2inch of frz rain
totals- major freezing rain, more than .5
Subject to change...
Ice Map overall for upcoming storm for Pennyslvania...
I will issue forecasts for the winter for regions of Pennyslvania...
Overall- This storm will cause major travel headaches across the state with a major ice storm possible. Sorry Philadelphia and I95 mostly rain, a little snow on beginning and backlash of storm. Little snow looks likely for hardly anyone now. Maybe just far northern areas such as erie and bradford. The track still remains uncertain.
Long term outlook- On december 26 gfs shows a major all out snowstorm. That will be one of the next storms to track.
Picture of ice on trees in my backyard from December 16 (today).
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