28 November 2012

Midwest Style Tornado Hits Southern Italy

Posted by Dan Satterfield

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The storm that flooded St. Mark’s Square in Venice with a meter of water today also produced a tornado. A real Great Plains style tornado at that.

Here is an image from the Meteosat showing the storm. If the budget cuts do not get it, the U.S. will have an ultra modern weather satellite like this in a few years.

Image courtesy Meteosat and PSU E-Wall.

The upper level charts show a negative tilted deep trough to the west, a classic super-cell set-up.  A strong surface low and warm front were moving across the southern parts of Italy as well today.

Click for higher resolution. From Penn State's Weather E-Wall. A negative tilt trough is one in which a line drawn through the base is slanted backwards. This maximizes the low level wind shear.