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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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Wed, 16 Dec 2009
Philadelphia Weekend Weather Outlook- Wed PM
Cold air and an upper trough will be with us through the weekend.
This afternoon's GFS model has low pressure staying close to the coast, giving us snow late Saturday night and Sunday morning. HOWEVER, the NOGAPS model and the DGEX model (an extended version of the NAM) keeps the precip to our south and east.
(During the last snowy event two weekends ago, the NOGAPS and DGEX/NAM were also together, while the GFS had the snow missing us. The DGEX turned out to be correct last time around. So the GFS is again an outlier. We'll see which model verifies.
Sat 12/19: Becoming cloudy by afternoon. Cold. High 35. Possible snow at night if the GFS is correct; the snow misses us if the DGEX and NOGAPS are correct.
Sun 12/20 (tentative) Clearing windy and cold. High 34.

Since this past summer (see post), I've postulated that this upcoming winter would be unusually cold due to a lull in solar activity. The sun remains at a prolonged minimum sunspot activity. Total solar irradiance is about 1 watt/m2 lower than it was during the peak of the last solar cycle in April 2000. Read my most recent Fall-Winter Climate prediction here.

posted: Dec 16 2009 at 8:11 pm

[/weather/dec09] 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	Wed, 16 Dec 2009 Philadelphia Weekend Weather Outlook- Wed PM Cold air and an upper trough will be with us through the weekend. This afternoon's GFS model has low pressure staying close to the coast, giving us snow late Saturday night and Sunday morning. HOWEVER, the NOGAPS model and the DGEX model (an extended version of the NAM) keeps the precip to our south and east. (During the last snowy event two weekends ago, the NOGAPS and DGEX/NAM were also together, while the GFS had the snow missing us. The DGEX turned out to be correct last time around. So the GFS is again an outlier. We'll see which model verifies. Sat 12/19: Becoming cloudy by afternoon. Cold. High 35. Possible snow at night if the GFS is correct; the snow misses us if the DGEX and NOGAPS are correct. Sun 12/20 (tentative) Clearing windy and cold. High 34. Since this past summer (see post), I've postulated that this upcoming winter would be unusually cold due to a lull in solar activity. The sun remains at a prolonged minimum sunspot activity. Total solar irradiance is about 1 watt/m2 lower than it was during the peak of the last solar cycle in April 2000. Read my most recent Fall-Winter Climate prediction here. posted: Dec 16 2009 at 8:11 pm [/weather/dec09] 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.