Oct 6, 2010

Subtropical Storm Otto and Midwest Freeze

Subtropical Storm Otto was named in the Atlantic today at 21Z (4PM CDT). Otto, seen here just east of the Bahamas, clearly has non-tropical characteristics especially in water vapor imagery:
Freezing temperatures have already been observed near the Ohio River:
Although not shown on the above chart, even Carbondale, IL had a low of 30F on the morning of October 4th (Monday), and 32F on the 5th. Mount Vernon, IL had a low of 28F on October 5th. Frost advisories for tonight include Cattanooga, TN and Knoxville, TN.A severe thunderstorm watch is active for western Colorado and a hurricane warning east of Florida.

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