May 1st, 2008 Forecast |
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 April 30, 2008 |
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Now: Temperatures in the Delaware Valley are running in the 50’s to around 60 degrees, with 60 at Atlantic City being the warm spot in the region. Temperatures are a couple of degrees cooler and we have slightly less sunshine this afternoon than yesterday but it’s not a terrible Spring afternoon by any stretch as winds are lighter than yesterday.
Tonight: We’ll see another cool night but with variably cloudy skies we should not see as much frost as we saw this morning in the region. Clouds will tend to increase as the night wears on and we should be mostly cloudy by morning. Low temperatures tonight should range from the mid 30’s in those cool enclaves outside of the city to 42 in Center City.
Thursday: The first signs of a warm front will be evident as clouds increase and showers break out across the region, most numerous in the afternoon and into the evening hours. East winds at the surface will keep us somewhat cool so we will not be much warmer tomorrow and the front will have problems making too much progress northward. Temperatures will end up between 58 and 61 for much of the region. If clouds are slow to increase in the morning hours we could see more widespread low 60’s.
Light rain and occasional showers will persist through Thursday night with more occasional showers possible Friday north of the city.
As of right now, model guidance is suggesting that the warm front will not get past Philadelphia so we will see temperatures stay mild but not get excessive warm. However, Delaware and Maryland will be warmer and low 80’s will be as close to us as suburban DC. A relatively slow-moving cold front will move east as low pressure pushes northeast from the Midwest into Canada over the next four days. This front will bring us the second chance of showers and thunderstorms for Saturday night and Sunday, with the bulk of precipitation falling on Sunday afternoon.
CO2 increases again: NOAA reported last week that carbon dioxide emissions increased by six tenths of a percent during 2007. Carbon dioxide is linked as the primary driver of global climate change.
Air Quality Awareness Week: Philadelphia deals with the occasional “Ozone Action Days”
during the summertime. NOAA announced this week as “Air Quality Awareness Week” to help raise awareness of what ozone, air pollution, and the air quality index is all about.
More Tidewater Twister Talk: Video and more information from the National Weather Service is available for viewing. The Suffolk Tornado was rated as EF-3 on the Enhanced Fujita scale.
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