Tuesday, May 10, 2011

May 10: Tornado Watch

At this time, a tornado watch is in effect until 12 am.
The threats at this time are Tornadoes, Hail to 2 inches and Thunderstorm Wind Gusts to 70 mph.
Areas in this watch are in Central Minnesota.

DISCUSSION
Storms are currently developing in Central Minnesota. Although the potential threats include tornadoes, I am losing confidence in this threat as these storms go linear. This will produce more of a damaging wind threat.
Why is the tornado threat decreasing? It is much harder for anything to spin while aligned in a line. That's just the logic of it.
These storms are developing along a frontal boundary associated with low pressure systems pushing into Minnesota. Large hail is possible with the lift and instability that is occurring in the dynamic atmosphere.

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