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Philadelphia Weekend Weather and Storm Forecasts

Glenn F. Schreiber DMD and Glenn Schreiber is theweatherguy writing about Philadelphia Weather [radar] [surface map] [disclaimer]

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Glenn F Schreiber
aka "theweatherguy"

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Tue, 06 Dec 2011
Philadelphia Winter Weather- Snow?
There are differences between the GFS and NAM models for late Wednesday night into Thursday morning. The GFS has most of the precipitation ending before the cold air moves in. The NAM has cold air moving in early Wednesday evening while maintaining precipitation. The GFS has typically been very good, but the new NAM model has a chance to show its stuff tomorrow night.
So, this storm will be an interesting test of the new NAM model. If it's correct, expect a couple of inches of wet snow by daybreak Thursday. If the GFS is correct, expect just wet conditions, maybe a coating of wet snow on grassy surfaces. Will update again tomorrow.
10PM update-- latest NAM just became available. Like the GFS, most of the precip ends before the cold air moves in. Maybe a coating of snow at daybreak Thursday.

posted: Dec 06 2011 at 10:48 pm

[/weather/dec11] permanent link

Philadelphia Winter Weather- Snow?
There are differences between the GFS and NAM models for late Wednesday night into Thursday morning. The GFS has most of the precipitation ending before the cold air moves in. The NAM has cold air moving in early Wednesday evening while maintaining precipitation. The GFS has typically been very good, but the new NAM model has a chance to show its stuff tomorrow night.
So, this storm will be an interesting test of the new NAM model. If it's correct, expect a couple of inches of wet snow by daybreak Thursday. If the GFS is correct, expect just wet conditions, maybe a coating of wet snow on grassy surfaces. Will update again tomorrow.

posted: Dec 06 2011 at 7:55 pm

[/weather/dec11] permanent link

Disclaimer: I am not a meteorologist and provide this information as a hobby and for entertainment (mostly my own :-) . While attempts are made to predict the weather as best as I can, use at your own risk! I am NOT responsible for any direct or indirect consequential injury/damages due to your use of these forecasts. Always check the NWS Official Forecast for your final plans.

The weatherguy.net home page has been visited times since October 2003.

theweatherguy's website
		Philadelphia Weekend Weather and Storm Forecasts
Glenn F. Schreiber DMD and Glenn Schreiber is theweatherguy writing about Philadelphia Weather [radar] [surface map] [disclaimer]
	About this blog theweatherguy's website, "Thoughts and comments on Philadelphia Weather and Daily Life." Glenn F Schreiber aka "theweatherguy" Photos Weather Definitions Copy link for RSS feed Links These are a few of my favorite links. National Weather Service Official Forecasts Meteorology Glossary Archives Weather Archives: 13: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 12: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 11: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 10: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 09: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 08: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 07: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 06: Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 05: Apr May Jun July Aug Sept Oct Nov Dec Commentary: Miscellaneous Find	Tue, 06 Dec 2011 Philadelphia Winter Weather- Snow? There are differences between the GFS and NAM models for late Wednesday night into Thursday morning. The GFS has most of the precipitation ending before the cold air moves in. The NAM has cold air moving in early Wednesday evening while maintaining precipitation. The GFS has typically been very good, but the new NAM model has a chance to show its stuff tomorrow night. So, this storm will be an interesting test of the new NAM model. If it's correct, expect a couple of inches of wet snow by daybreak Thursday. If the GFS is correct, expect just wet conditions, maybe a coating of wet snow on grassy surfaces. Will update again tomorrow. 10PM update-- latest NAM just became available. Like the GFS, most of the precip ends before the cold air moves in. Maybe a coating of snow at daybreak Thursday. posted: Dec 06 2011 at 10:48 pm [/weather/dec11] permanent link Philadelphia Winter Weather- Snow? There are differences between the GFS and NAM models for late Wednesday night into Thursday morning. The GFS has most of the precipitation ending before the cold air moves in. The NAM has cold air moving in early Wednesday evening while maintaining precipitation. The GFS has typically been very good, but the new NAM model has a chance to show its stuff tomorrow night. So, this storm will be an interesting test of the new NAM model. If it's correct, expect a couple of inches of wet snow by daybreak Thursday. If the GFS is correct, expect just wet conditions, maybe a coating of wet snow on grassy surfaces. Will update again tomorrow. posted: Dec 06 2011 at 7:55 pm [/weather/dec11] permanent link Disclaimer: I am not a meteorologist and provide this information as a hobby and for entertainment (mostly my own :-) . While attempts are made to predict the weather as best as I can, use at your own risk! I am NOT responsible for any direct or indirect consequential injury/damages due to your use of these forecasts. Always check the NWS Official Forecast for your final plans. The weatherguy.net home page has been visited times since October 2003.