Thursday, June 11, 2015

Thursday Severe Potential

Scattered thunderstorms moved across the Stateline through the morning, bringing pea to dime sized hail, but all remained non-severe. However, there is severe potential for any storms that develop later today. The surface front that brought storms just south of the Stateline yesterday is forecasted to lift to the north through the afternoon. A short wave of energy ejecting from the low pressure system that is currently in Iowa will help to develop more storms to the west, this development will help lift the warm front later this afternoon. Dew points will increase into the upper 60's and low 70's making heavy rain possible with any thunderstorms that develop. There should be enough energy in the atmosphere (we call it CAPE - Convective Available Potential Energy) which is an ingredient needed for thunderstorms, to allow storms to develop this afternoon with the help of a lifting warm front. However, the low pressure is still a little farther to the east, which could limit some of the coverage of storms today.  We will watch the placement of the warm front and the low pressure system, because they will dictate thunderstorm development. The biggest threat would be hail and strong wind gusts. The tornado threat is not zero, but it is low. The threat is there because winds along the boundary will start to shift as they rise through the levels of the atmosphere allowing cells to potentially rotate. 

We will continue to keep you updated as the system develops.



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