Posted by: pyeager | March 4, 2011

Flooding Threat This Weekend, Next Week, and Beyond

By Paul Yeager, author of Weather Whys: Facts, Myths, and Oddities

The combination of a stormy weather pattern, heavy rain that’s already fallen, and melting snow will result in the threat of flood for a large portion of the country from the Missouri and Tennessee Valleys through the Ohio Valley and into the Northeast in the coming weeks.

For more on the overall pattern, see my AOL News story (Flood Threat Growing from Missouri Valley to Northeast).

As far as the overall weather pattern, here is the cumulative precipitation for the next couple of weeks (or so) from the 12z run of the GFS, the U.S. computer forecast model. I wouldn’t focus on the amount of rain on the map as much as the areas where rain is forecast, which includes the region where flooding is currently a risk.

Accumulated precipitation map from GFS

Accumulated precipitation map from GFS

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