Weather Underground midday recap for Sunday,August 18,2013.
Heavy rainfall continued across the Southeast on Sunday. An area of low
pressure located near the Central Gulf Coast, along a frontal boundary
extending from the Central Gulf Coast through the southeastern corner of
the nation ushered ample moisture northward. Heavy rainfall developed
near the Mississippi coast into Alabama, while a few rotating
thunderstorms were observed near the coast and offshore though the
morning. Strong thunderstorm activity weakened by the afternoon, and
left only isolated chances of marginally damaging wind gusts across
southern Alabama and the Florida Panhandle/southwestern Georgia. Rain
totals along the Central Gulf Coast have ranged up to 3 to 4 inches
during the afternoon, maintaining dangerous flood conditions. Flood and
flash flood advisories and warnings continued for panhandle of Florida
through Alabama coastal areas. Outside of this area, scattered showers
and chances of thunderstorms continued through the Tennessee Valley into
the southeastern Ohio Valley and Mid-Atlantic.
Meanwhile in the North, a cold front moved eastward across the
north-central U.S. on Sunday and brought chances of showers and
thunderstorms to the Northern Plains. Parts of the Northern Plains were
at slight risk of severe thunderstorm development through the afternoon
and evening with chances of damaging wind and hail.
Out West, monsoonal moisture lingering over the Four Corners maintained
chances of afternoon and evening shower and thunderstorm activity.
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