Decided against TOR in OAX Charley

Had an earlier signal on a rotating cell that lasted only one frame in our southeast and did not receive reports from it.  Had another signal in Gage county, also did not last too long.  Area already under a SVR warning.

NoTOR_OAX_2 NoTOR_OAX_1

 

Here’s an earlier snapshot when rotation was stronger, but not in an area where reflectivity was high, especially given how high up we were in the storm.

NoTOR_OAX_4

Also, we have some local office research using RAP parameters for when we issued TOR warnings.  They looked at warnings that verified and those that didn’t and what the parameters were.  In this case, the 0-1 km shear was low, 10-15 knots, where the storm was, so it likely was just a rotating cell.

0_1km_Shear

 

 

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