Images of the Harrisburg tornado

February 21, 2017 By Jim Muir Leave a Comment

NWS Paducah image

NWS Paducah image

PADUCAH, KY – Here are some graphs, radar images, and some pictures from the devastating tornado that hit Harrisburg on February 29, 2012. Please click on the link to view. Here is an introduction from the website. A squall line with embedded sustained supercells crossed into portions of southeast Missouri and southern Illinois during the early morning hours on February 29, 2012. The embedded supercells raced east-northeast at 60 to 70 mph, while the line moved southeast at a slower rate. The storms strengthened as they encountered richer low-level moisture, with surface dew points around 60 degrees spreading rapidly north-northeastward up the Mississippi Valley. Intense low to mid-level wind fields maintained the intensity of tornadic storms despite weak instability due to lack of solar heating. A south-southwesterly low level jet from 60 to 70 knots veered to west-southwest around 75 knots at 500 mb. Out of the 13 tornadoes that occurred that day, the most intense tornado was an EF4, which produced substantial damage to parts of Harrisburg and Ridgway Illinois.

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