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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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Sun, 25 Jan 2009
Philadelphia Winter Weather Update- Sun PM
Well, the later runs of the NAM and GFS are less in agreement, with the GFS warmer than the NAM. The NAM has precip coming in sooner (early Tues) while the GFS holds it off. This is beginning to remind me of the storm several weeks ago that fell apart.
I'll keep an eye on this one.

posted: Jan 25 2009 at 7:17 pm

[/weather/jan09] permanent link

Philadelphia Winter Weather Update- Sun AM
Our first likely significant snow is showing on the latest models for Tuesday into Wednesday. That said, the models have been wrong several times this season, but this is the first time the NAM and GFS have had some agreement in advance this winter.
A stalled frontal boundary to our south will allow a wave to develop and intensify as it moves east. The latest NAM has snow starting as early as Tuesday morning and increasing during the day. Several inches are possible by evening. There is the possibility that warm air will mix in changing to sleet and rain Tuesday night into Wednesday. The exact track and the degree of warming needs to be evaluated with future model runs. Updates as needed.
A deep trough follows this storm with return to very cold weather. The position of this deep upper trough may allow another storm to affect us in the Friday time period.
Sun 1/25: Partly sunny and cold. High 33.

posted: Jan 25 2009 at 11:49 am

[/weather/jan09] permanent link

Philadelphia Weekend Weather Forecast- Sat PM
The cold front passed through and cold temperatures have returned.
The upper air pattern is less amplified and the frontal boundary will be stalling to our south eventually allowing disturbances to develop and ride across the boundary causing snow or ice or rain. This is forecast for late Tuesday as light snow will transition to sleet and freezing rain and then back to snow. Difficult driving is possible Wed morning. lastest GFS has a potential snowstorm for Philadelphia on Wed. Very cold weather returns next weekend.
Sun 1/25: Partly sunny and cold. High 28.

posted: Jan 25 2009 at 3:28 am

[/weather/jan09] 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	Sun, 25 Jan 2009 Philadelphia Winter Weather Update- Sun PM Well, the later runs of the NAM and GFS are less in agreement, with the GFS warmer than the NAM. The NAM has precip coming in sooner (early Tues) while the GFS holds it off. This is beginning to remind me of the storm several weeks ago that fell apart. I'll keep an eye on this one. posted: Jan 25 2009 at 7:17 pm [/weather/jan09] permanent link Philadelphia Winter Weather Update- Sun AM Our first likely significant snow is showing on the latest models for Tuesday into Wednesday. That said, the models have been wrong several times this season, but this is the first time the NAM and GFS have had some agreement in advance this winter. A stalled frontal boundary to our south will allow a wave to develop and intensify as it moves east. The latest NAM has snow starting as early as Tuesday morning and increasing during the day. Several inches are possible by evening. There is the possibility that warm air will mix in changing to sleet and rain Tuesday night into Wednesday. The exact track and the degree of warming needs to be evaluated with future model runs. Updates as needed. A deep trough follows this storm with return to very cold weather. The position of this deep upper trough may allow another storm to affect us in the Friday time period. Sun 1/25: Partly sunny and cold. High 33. posted: Jan 25 2009 at 11:49 am [/weather/jan09] permanent link Philadelphia Weekend Weather Forecast- Sat PM The cold front passed through and cold temperatures have returned. The upper air pattern is less amplified and the frontal boundary will be stalling to our south eventually allowing disturbances to develop and ride across the boundary causing snow or ice or rain. This is forecast for late Tuesday as light snow will transition to sleet and freezing rain and then back to snow. Difficult driving is possible Wed morning. lastest GFS has a potential snowstorm for Philadelphia on Wed. Very cold weather returns next weekend. Sun 1/25: Partly sunny and cold. High 28. posted: Jan 25 2009 at 3:28 am [/weather/jan09] 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.