Monster Storm Will Bring Flooding to the Area | NBC 10 Philadelphia

Monster Storm Will Bring Flooding to the Area

An average of 3 to 6 inches of rain is expected to fall across the area

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    NEWSLETTERS

    NBCPhiladelphia.com

    Yet another monster storm is affecting the area during this record winter. This time, though, it's too warm for snow -- but the snow we had is part of the problem.

    The 55-inches of snow we got in February had to go somewhere, and when it melted, left the ground very moist and the creeks and rivers very high.

    Now, when we add another few inches of rain to the mix, it leads to a significant flood threat over much of the area.

    First, the rain. The area should average about 3 inches, with up to 6 inches in some spots. The National Weather Service issued a Flood Watch for most of the area from 7 p.m. Friday through Sunday morning.

    Inside Weather: Flood Watches, Wind

    [PHI] Inside Weather: Flood Watches, Wind
    Glenn tells us what to expect this weekend. (Published Friday, March 12, 2010)

    Most of the rain will fall between midnight and 7 p.m. Saturday. That would be more than enough rain to cause at least some flooding on virtually all area creeks.

    Some creeks, such as Neshaminy, Brandywine, and Assumpink are already predicted to get close to major flooding levels.

    And the Schuylkill and Delaware could see some flooding once the creeks empty into the main rivers.

    Second, the wind. The easterly wind will increase tonight to 20-30 m.p.h., and then escalate to 30-40 m.p.h. with gusts blowing over 50 m.p.h. -- even in inland areas Saturday.

    At the shore, winds could reach 40-50 m.p.h. at the peak of the storm, with gusts possibly as high as 75 m.p.h.

    The wind will be gusting that strong only a couple of thousand feet above the ground, and it's just a question as to whether will work down to the surface.

    Coastal flooding is expected, and a coastal flood warning is in effect. Moderate tidal flooding is possible Saturday morning and evening during the times of high tide. Beach erosion will be a problem as well.

    The shore areas will be especially vulnerable to flooding, since there has already been street flooding well before the worst of the storm moves in.

    The storm will move over the area Sunday, leading to less rain and wind, but as it moves out Monday, the wind will increase again and showers will move in.

    Once the storm moves away, it looks like an extended period of dry and warm weather!

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