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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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Mon, 22 Feb 2010
Philadelphia Weather Outlook- Mon PM
The GFS model is showing snow for late Thursday into Friday morning. This is an unusual system and exact amounts are very uncertain. See my earlier note below:
A very interesting weather week, as a deep low pressure system is expected to develop over New England on Thursday through Saturday. An interaction between an upper low and a surface low will cause this system to undergo explosive cyclogenesis and retrograde from east to west as the two lows become vertically stacked and the upper trough becomes negatively tilted. The models have been consistent with this developing feature but exact location remains unclear.
As a result, very cold temperatures will return to our area. Very windy conditions will also develop during the same period. Depending on how far south and west this storm retrogrades and how large it becomes, we will either have snow showers or accumulating snow. Stay tuned.

Solar Climate Discussion (Updated 2/6): This past July and August (see post here) (and here), I suggested that this winter would be unusually cold due to a prolonged lull in solar activity. The sun is beginning to come out of a solar minimum, and there has finally been the long expected increase in solar activity signaling the real beginning of Solar Cycle 24. There are several sunspot areas, but the solar flux still hasn't taken off. It's still early in the cycle. Total Solar Irradiance continues to be about 1 watt/m2 lower than it was during the peak of the last solar cycle, Solar Cycle 23, in April 2000.
As of early February, it looks like the solar cycle is providing the predicted colder than normal temperatures and the El Nino is providing the potent moisture rich southern jet stream. Continue to expect colder than normal temperatures into the spring.

posted: Feb 22 2010 at 7:30 pm

[/weather/feb10] permanent link

Philadelphia Weather Outlook- Mon AM
A very interesting weather week, as a deep low pressure system is expected to develop over New England on Thursday through Saturday. An interaction between an upper low and a surface low will cause this system to undergo explosive cyclogenesis and retrograde from east to west as the two lows become vertically stacked and the upper trough becomes negatively tilted. The models have been consistent with this developing feature but exact location remains unclear.
As a result, very cold temperatures will return to our area. Very windy conditions will also develop during the same period. Depending on how far south and west this storm retrogrades and how large it becomes, we will either have snow showers or accumulating snow. Stay tuned.

Solar Climate Discussion (Updated 2/6): This past July and August (see post here) (and here), I suggested that this winter would be unusually cold due to a prolonged lull in solar activity. The sun is beginning to come out of a solar minimum, and there has finally been the long expected increase in solar activity signaling the real beginning of Solar Cycle 24. There are several sunspot areas, but the solar flux still hasn't taken off. It's still early in the cycle. Total Solar Irradiance continues to be about 1 watt/m2 lower than it was during the peak of the last solar cycle, Solar Cycle 23, in April 2000.
As of early February, it looks like the solar cycle is providing the predicted colder than normal temperatures and the El Nino is providing the potent moisture rich southern jet stream. Continue to expect colder than normal temperatures into the spring.

posted: Feb 22 2010 at 7:45 am

[/weather/feb10] 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	Mon, 22 Feb 2010 Philadelphia Weather Outlook- Mon PM The GFS model is showing snow for late Thursday into Friday morning. This is an unusual system and exact amounts are very uncertain. See my earlier note below: A very interesting weather week, as a deep low pressure system is expected to develop over New England on Thursday through Saturday. An interaction between an upper low and a surface low will cause this system to undergo explosive cyclogenesis and retrograde from east to west as the two lows become vertically stacked and the upper trough becomes negatively tilted. The models have been consistent with this developing feature but exact location remains unclear. As a result, very cold temperatures will return to our area. Very windy conditions will also develop during the same period. Depending on how far south and west this storm retrogrades and how large it becomes, we will either have snow showers or accumulating snow. Stay tuned. Solar Climate Discussion (Updated 2/6): This past July and August (see post here) (and here), I suggested that this winter would be unusually cold due to a prolonged lull in solar activity. The sun is beginning to come out of a solar minimum, and there has finally been the long expected increase in solar activity signaling the real beginning of Solar Cycle 24. There are several sunspot areas, but the solar flux still hasn't taken off. It's still early in the cycle. Total Solar Irradiance continues to be about 1 watt/m2 lower than it was during the peak of the last solar cycle, Solar Cycle 23, in April 2000. As of early February, it looks like the solar cycle is providing the predicted colder than normal temperatures and the El Nino is providing the potent moisture rich southern jet stream. Continue to expect colder than normal temperatures into the spring. posted: Feb 22 2010 at 7:30 pm [/weather/feb10] permanent link Philadelphia Weather Outlook- Mon AM A very interesting weather week, as a deep low pressure system is expected to develop over New England on Thursday through Saturday. An interaction between an upper low and a surface low will cause this system to undergo explosive cyclogenesis and retrograde from east to west as the two lows become vertically stacked and the upper trough becomes negatively tilted. The models have been consistent with this developing feature but exact location remains unclear. As a result, very cold temperatures will return to our area. Very windy conditions will also develop during the same period. Depending on how far south and west this storm retrogrades and how large it becomes, we will either have snow showers or accumulating snow. Stay tuned. Solar Climate Discussion (Updated 2/6): This past July and August (see post here) (and here), I suggested that this winter would be unusually cold due to a prolonged lull in solar activity. The sun is beginning to come out of a solar minimum, and there has finally been the long expected increase in solar activity signaling the real beginning of Solar Cycle 24. There are several sunspot areas, but the solar flux still hasn't taken off. It's still early in the cycle. Total Solar Irradiance continues to be about 1 watt/m2 lower than it was during the peak of the last solar cycle, Solar Cycle 23, in April 2000. As of early February, it looks like the solar cycle is providing the predicted colder than normal temperatures and the El Nino is providing the potent moisture rich southern jet stream. Continue to expect colder than normal temperatures into the spring. posted: Feb 22 2010 at 7:45 am [/weather/feb10] 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.