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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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Sat, 24 Oct 2009
Philadelphia Weekend Weather Update- Sat AM
Some differences in last night's models, as the NAM delays the bulk of the heavy rain until this evening here in Philadelphia; the GFS continues its forecast of heavy rain by late morning and early afternoon through early evening.
As suggested in my earlier forecast (based on the NAM), the morning hours may have a break in the action with even some bright spots, but showers should return to the area by afternoon as an upper air area of spin/vorticity (vort max) moves over us from the southwest.
Increasingly heavy showers, thundershowers and rain will develop ahead of the cold front today, especially by afternoon and continue into early evening. Rainfall amounts may approach 2 inches. (The GFS continues not to show any true dry periods for Sat morning, although precip will likely be very light and intermittent this morning, according to the NAM model. It's not clear whether the NAM is correct with the bulk of the rain waiting until the evening. I guess we'll see.)
Sunday will be partly cloudy and windy and cooler.
Sat 10/24: Cloudy with showers and thunderstorms, increasingly likely and heavy by afternoon, (although the NAM model delays the heaviest rain until the evening). Breezy, mild. High 70
Sun 10/25: Partly sunny, breezy and cooler. High 61
Read my most recent Fall-Winter Climate prediction here.
Follow me on Twitter as theweatherguy for on-the-fly weather updates and observations.

posted: Oct 24 2009 at 8:33 am

[/weather/oct09] 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, 24 Oct 2009 Philadelphia Weekend Weather Update- Sat AM Some differences in last night's models, as the NAM delays the bulk of the heavy rain until this evening here in Philadelphia; the GFS continues its forecast of heavy rain by late morning and early afternoon through early evening. As suggested in my earlier forecast (based on the NAM), the morning hours may have a break in the action with even some bright spots, but showers should return to the area by afternoon as an upper air area of spin/vorticity (vort max) moves over us from the southwest. Increasingly heavy showers, thundershowers and rain will develop ahead of the cold front today, especially by afternoon and continue into early evening. Rainfall amounts may approach 2 inches. (The GFS continues not to show any true dry periods for Sat morning, although precip will likely be very light and intermittent this morning, according to the NAM model. It's not clear whether the NAM is correct with the bulk of the rain waiting until the evening. I guess we'll see.) Sunday will be partly cloudy and windy and cooler. Sat 10/24: Cloudy with showers and thunderstorms, increasingly likely and heavy by afternoon, (although the NAM model delays the heaviest rain until the evening). Breezy, mild. High 70 Sun 10/25: Partly sunny, breezy and cooler. High 61 Read my most recent Fall-Winter Climate prediction here. Follow me on Twitter as theweatherguy for on-the-fly weather updates and observations. posted: Oct 24 2009 at 8:33 am [/weather/oct09] 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.