Tuesday, December 22, 2009

11:00pm Tuesday Weather Update

New data is just in from the 0z NAM forecast model. Below is a graphical look at the forecast over the next 84 hours for a few select locations across the Midwest. (Green bars indicate rain. Blue bars indicate snow. Red bars indicate freezing rain. Red line indicates surface air temperature.)

Cape Girardeau, Missouri:


The model is putting out 3.3" of rain through the period.

Cedar Rapids, Iowa:


The model is putting out 0.05" of freezing rain (ice) for Wednesday. It then changes back over to all rain Thursday. Two inches of rain possible. Then 4" of snow Friday in to the weekend.


Indianapolis, Indiana:


It should be mainly rain for the folks in Indianapolis. The model is not putting out as much rain as it has in earlier runs. Total rainfall through the period is 0.83".

A few other locations not shown above:

  • Chicago, Illinois: 0.4" of freezing rain/ice possible Wednesday. It then changes back over to 1" of rain. Roads could be slick if you are heading to extreme northern Illinois (near the Wisconsin line) Wednesday.
  • Little Rock, Arkansas: All rain. The model is putting out 4.5" of rain. According to the Storm Prediction Center a "Slight Risk" of severe weather exists over the western part of the state Wednesday.

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