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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, 04 Jul 2010
Philadelphia Weather Outlook -Sun PM
Well, things have warmed up, as have the latest MOS forecasts. Things get pretty bad here on Tuesday and Wednesday, as temps approach 98-100 and dewpoints move into the mid 60s
Mon 7/5: Sunny, hot and increasingly humid. High 98.

Solar Discussion July- The Solar Cycle 24 is underway, although the increase in sunspot activity has fallen below predicted values at this stage of the cycle. Solar flux remains low, as does sunspot number. What has changed is the velocity of the solar wind. The solar wind was very quiet last summer, with speeds around 300 Km/sec. This year, solar wind values are much higher, in the 400-700 km/sec range. While solar wind is associated with coronal holes, not only flares and sunspots, this appears to be measureably increased this year. Are increases in solar wind associated with less cloud cover, less rain, droughts and heat waves? It's not clear, although there are theories making this association, specifically that the higher solar wind reduces high energy cosmic ray seeding of clouds. When was the last heat wave on July 4th? 11 years ago. What's the average solar cycle length? 11 years. Not scientific, but these drought and heat cycles seem to go in cycles of this length.
Back in April I took a temperature-neutral approach to this summer's climate. I'm still there. What I do think we might begin to see is a continuing decrease in precipitation, both with the end of the El Nino and the increase in solar activity. Perhaps we're seeing the beginning of a drought pattern? Stay tuned.

posted: Jul 04 2010 at 7:20 pm

[/weather/jul10] permanent link

Philadelphia Weekend Weather Forecast -Sun AM

The latest models have lowered the high temps a bit.
A Bermuda high will set up a southwesterly surface flow of increasingly warm, then increasingly hot air for the weekend and into next week. There are differences in the models regarding high temperatures and the amount of moisture (dew points), but the general range will be 93-98. As hot as the temps will be, the dew point may not get past the mid 60s, sparing us from an extreme heat experience.

Sun 7/4: Sunny, hot and more humid. High 93.
Mon 7/5: Sunny, hot and increasingly humid. High 96.

posted: Jul 04 2010 at 8:35 am

[/weather/jul10] 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, 04 Jul 2010 Philadelphia Weather Outlook -Sun PM Well, things have warmed up, as have the latest MOS forecasts. Things get pretty bad here on Tuesday and Wednesday, as temps approach 98-100 and dewpoints move into the mid 60s Mon 7/5: Sunny, hot and increasingly humid. High 98. Solar Discussion July- The Solar Cycle 24 is underway, although the increase in sunspot activity has fallen below predicted values at this stage of the cycle. Solar flux remains low, as does sunspot number. What has changed is the velocity of the solar wind. The solar wind was very quiet last summer, with speeds around 300 Km/sec. This year, solar wind values are much higher, in the 400-700 km/sec range. While solar wind is associated with coronal holes, not only flares and sunspots, this appears to be measureably increased this year. Are increases in solar wind associated with less cloud cover, less rain, droughts and heat waves? It's not clear, although there are theories making this association, specifically that the higher solar wind reduces high energy cosmic ray seeding of clouds. When was the last heat wave on July 4th? 11 years ago. What's the average solar cycle length? 11 years. Not scientific, but these drought and heat cycles seem to go in cycles of this length. Back in April I took a temperature-neutral approach to this summer's climate. I'm still there. What I do think we might begin to see is a continuing decrease in precipitation, both with the end of the El Nino and the increase in solar activity. Perhaps we're seeing the beginning of a drought pattern? Stay tuned. posted: Jul 04 2010 at 7:20 pm [/weather/jul10] permanent link Philadelphia Weekend Weather Forecast -Sun AM The latest models have lowered the high temps a bit. A Bermuda high will set up a southwesterly surface flow of increasingly warm, then increasingly hot air for the weekend and into next week. There are differences in the models regarding high temperatures and the amount of moisture (dew points), but the general range will be 93-98. As hot as the temps will be, the dew point may not get past the mid 60s, sparing us from an extreme heat experience. Sun 7/4: Sunny, hot and more humid. High 93. Mon 7/5: Sunny, hot and increasingly humid. High 96. posted: Jul 04 2010 at 8:35 am [/weather/jul10] 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.