Severe Wx and Chaser Update

Our chasers are getting into position for severe storms including the potential formation of supercells.  I know that John and Brantley are headed toward the general area of McComb, MS along I-55.  Nick is further north and just ahead of a severe line of storms that is impacting the Yazoo City area.  Some rotation has been noted in those cells.  We will keep you up to date on what is happening, but you can watch each of them LIVE by clicking their tabs at the top of the page! 

Severe Potential: East and Front Range

A freshly issued mesoscale discussion from the SPC mentions that a weather watch isn’t likely for portions of GA/AL, but some wet microbursts will be possible…

   SCATTERED THUNDERSTORMS ARE DEVELOPING ACROSS WRN SC SWWD ACROSS
   CNTRL GA INTO SE AL AND THE WRN FL PANHANDLE THIS AFTERNOON ALONG AN
   AXIS OF MODERATE TO STRONG INSTABILITY. AS SFC TEMPS CONTINUE TO
   WARM....NEW CELLS WILL INITIATE WITH CONVECTIVE COVERAGE BECOMING
   NUMEROUS OVER THE NEXT FEW HOURS. MESOANALYSIS CURRENTLY ESTIMATES
   MLCAPE VALUES ACROSS THE MCD AREA FROM 2000 TO 3000 J/KG WITH SFC
   DEWPOINTS IN THE LOWER 70S F AND 0-3 KM LAPSE RATES OF 7.5 TO 8.5
   C/KM. THIS ENVIRONMENT COMBINED WITH WEAK DEEP LAYER SHEAR SHOULD BE
   FAVORABLE FOR MARGINALLY SEVERE PULSE STORMS. AS THE STRONGER CELLS
   BRIEFLY PULSE UP AND DOWN...ISOLATED WET DOWNBURSTS WILL BE
   POSSIBLE.

A Severe Thunderstorm watch has already been issued for the Baltimore, DC, Philly, New York, Boston metro areas until 8PM EDT this evening.  Storms are already growing upscale ahead of a lead impulse.  Given moderate instability, damaging winds and large hail will be likely with the developing multicells and line segments. 

Additional action is likely later today in the western high plains and the front range of the Rockies where wind and hail will be possible.  Also, the potential is a little greater for a few isolated supercells with isolated tornadoes over portions of NE Colorado, Wyoming, western Nebraska, and the Dakotas this afternoon.