PM Update: Clouds break, unsettled trend continues

Mostly cloudy skies, including the presence of drizzle and some fog, hampered the forecast for the majority of Thursday. Although temperatures still reached into the 70’s and near 80 with humidity on the rise, the sun was absent — a poor beach day for those who are still clinging to the last few available this summer. The humidity and mugginess in the air may have left Thursday feeling somewhat uncomfortable. A weak disturbance will pass through the area overnight tonight, and with a backdoor cold front in the area a few storms are possible over the far interior suburbs and Northwest PA. Generally, however, dry conditions are expected through the majority of the area this evening. Low temperatures are expected to fall into the 60’s throughout most of the area tonight.

Water Vapor satellite imagery and observations from 6pm on 8/29/13

The backdoor front will wash out a bit by Friday, and with the easterly flow (which caused the clouds/fog on Thursday) weakening and backing to a south-westerly flow, we are expecting a warmer day with more sun. Highs should top out in the lower 80’s in most areas. The weekend looks to remain unsettled, with a chance of storms each day — fairly difficult to pinpoint, but no threats of widespread heavy rain. Saturday looks like the winner of the weekend, with highs in the 80’s and a chance of storms mainly relegated to the western suburbs. Storm chances increase both Sunday and Monday before a cold front crosses the area.

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