PA Ozone/PM2.5 Forecast
December 1, 2015
Date: Tuesday, December 1, 2015
Tuesday will be rainy and overcast but mild. A frontal boundary draped across the Southeastern U.S. will move back northward as a warm front, lifting over the Delaware Valley in the late afternoon. Rain associated with the boundary will begin overnight and continue through the day on Tuesday. This precipitation combined with onshore transport will keep particle concentrations in the Good range.
A cold front will approach from the west on Wednesday and move through the Philadelphia metropolitan area in the late evening. Unseasonably warm but rainy and overcast weather will continue. Particles will increase slightly due to subsiding winds but will remain in the Good range. Behind the front on Thursday, a seasonably cool and dry air mass will arrive on breezy northwesterly winds. Particles will drop lower into the Good range.
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