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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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"Thoughts and comments on Philadelphia Weather and Daily Life."

Glenn F Schreiber
aka "theweatherguy"

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Sat, 23 Jan 2010
Philly Weather Forecast Change- Sat Eve [2]
Yet another change in the forecast for Sunday. The latest NAM data just became available and it shows the rain holding off until Sunday evening again. Additionally, it holds off the heavier rain until the early hours of Monday and Monday morning.
Unfortunately, my source of GFS Grib2 live data hasn't been available over the past week, so will have to wait for the end of the model run to get the update. This won't be available until after midnight.
The bottom line is that the weather during the day Sunday may be drier than previously predicted.
Sun 1/24: Partial sun very early, then thickening clouds. Rain develops very late in the afternoon. Mild. High 51.
With the slowing of this system, the January Thaw may be with us through Wednesday. Temps are expected to go below normal for next weekend.
Solar Climate Discussion: This past summer (see post), I suggested that this upcoming winter would be unusually cold due to a lull in solar activity. The sun remains at a prolonged minimum sunspot activity, although there has finally been a long expected uptick in activity over the past two months indicating the beginning of Solar Cycle 24. Total Solar Irradiance is about 1 watt/m2 lower than it was during the peak of the last solar cycle in April 2000. Continue to expect below normal temperatures on average for this winter and early spring.

posted: Jan 23 2010 at 10:28 pm

[/weather/jan10] permanent link

Weather Update- Sat Eve
The latest in NAM model has rain starting about 1 PM on Sunday. Rain is expected to become very heavy at night.

posted: Jan 23 2010 at 8:28 pm

[/weather/jan10] 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	Sat, 23 Jan 2010 Philly Weather Forecast Change- Sat Eve [2] Yet another change in the forecast for Sunday. The latest NAM data just became available and it shows the rain holding off until Sunday evening again. Additionally, it holds off the heavier rain until the early hours of Monday and Monday morning. Unfortunately, my source of GFS Grib2 live data hasn't been available over the past week, so will have to wait for the end of the model run to get the update. This won't be available until after midnight. The bottom line is that the weather during the day Sunday may be drier than previously predicted. Sun 1/24: Partial sun very early, then thickening clouds. Rain develops very late in the afternoon. Mild. High 51. With the slowing of this system, the January Thaw may be with us through Wednesday. Temps are expected to go below normal for next weekend. Solar Climate Discussion: This past summer (see post), I suggested that this upcoming winter would be unusually cold due to a lull in solar activity. The sun remains at a prolonged minimum sunspot activity, although there has finally been a long expected uptick in activity over the past two months indicating the beginning of Solar Cycle 24. Total Solar Irradiance is about 1 watt/m2 lower than it was during the peak of the last solar cycle in April 2000. Continue to expect below normal temperatures on average for this winter and early spring. posted: Jan 23 2010 at 10:28 pm [/weather/jan10] permanent link Weather Update- Sat Eve The latest in NAM model has rain starting about 1 PM on Sunday. Rain is expected to become very heavy at night. posted: Jan 23 2010 at 8:28 pm [/weather/jan10] 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.