By Steven Strouss

PHILADELPHIA (CBS) — Flood Warnings remain in effect for most of the area as heavy rain pounds the region. As much as 4″ of rain has already fallen and an additional 1″ is expected before the heaviest rain tapers to showers overnight. Numerous creeks and streams have exceeded their banks and flooding is occurring along many low lying roads and in poor drainage areas. As a reminder, do not walk or drive through flooded roadways and evacuate if you are instructed. It only takes two feet of water to float a car and six inches of fast moving water to knock down an adult. Many roads are closed so give yourself plenty of extra time as you head out Thursday morning.

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The area of low pressure responsible for the flooding in our region has also caused record flooding in parts of the south and spawned fatal tornadoes earlier this week across the Mississippi Valley. The potent system will finally lift north tomorrow evening as most of the streams and creeks begin to recede. Prior to that, major flooding will occur along the Neshaminy creek at Langhorne and the Brandywine creek below Downingtown. The Perkiomen creek at Graterford and the Chester creek in Chester will also approach major flood stage.

As the rain tapers, temperatures will rise through the 60s overnight as a warm front moves north. Thursday will be a much warmer day, with highs in the mid 70s and at least a little sunshine. There will still be a few showers during the day.  Then a quiet stretch of weather is forecasted for Friday and the weekend with highs in the upper 60s and some sunshine each day (but also the chance for spotty showers).