Saturday, June 1, 2013

June 1st the Severe Weather Continues

This is what the evening time is suppose to look like by later this evening with a low pressure over south central TX and a cold front stretching northwards to a low pressure over the Lakes region. It will be this cold front that will serve as the trigger once again for severe weather with all facets of severe weather expected to occur and we will break down where we think has the best chance for tornado's.
First off the weather will continue to be hot out ahead of the front with temperatures into the 90s and elsewhere in the 70s to 80 range..
Dew points will once again be in the 60s to around 70 degrees allowing the atmosphere to be quite muggy and moist.
Shear is the next factor in play and that will be between 40 and 60 knots...

Instability or Convective Available Potential Energy is sufficient for severe weather from 1000 to as much as 3500
Lift Index will be from about negative 2 to negative 8 depending on where you reside..

Now to get into the tornado parameters ...Which would be the EHI and Helicity and the SWEAT index..
EHI is at or above 1 over a large area of real estate . But as you can see the worst is in SE TX to Southern ARK .. This is where we think the greatest chance of tornados will be . However anywhere with an 1 or above has the chance to see an isolated tornado from any supercells that do form.
You can see that the SWEAT index is also showing the same favored locations but would add Louisiana to the list where tornados are possible. 

Helicity is more of a non factor today compared to other days with the highest over western OH and west.

So with all the parameters in place we have put together this outlook for June 1st..
Once again if you are in the path of a storm that contains a tornado seek shelter immediately. Listen to your NWS for any latest watches warnings or special weather statements...

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