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Jun 27, 2016 0730 UTC Day 3 Severe Thunderstorm Outlook
Updated: Mon Jun 27 07:24:05 UTC 2016 (Print Version | 20160627 0730Z Day 3 shapefile | 20160627 0730Z Day 3 KML)
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 Forecast Discussion
   SPC AC 270724

   DAY 3 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0224 AM CDT MON JUN 27 2016

   VALID 291200Z - 301200Z

   ...THERE IS A MRGL RISK OF SVR TSTMS ACROSS PARTS OF THE NRN AND
   CNTRL PLAINS...

   ...THERE IS A MRGL RISK OF SVR TSTMS ACROSS PARTS OF NEW ENGLAND...

   ...SUMMARY...
   MARGINALLY SEVERE THUNDERSTORMS WITH HAIL AND STRONG WIND GUSTS WILL
   BE POSSIBLE WEDNESDAY AFTERNOON AND EVENING ACROSS PARTS OF THE
   NORTH-CENTRAL STATES AND IN NEW ENGLAND.

   ...CNTRL AND NRN PLAINS...
   NORTHWEST MID-LEVEL FLOW WILL REMAIN OVER THE CNTRL AND NRN PLAINS
   ON WEDNESDAY. AT THE SFC... A COLD FRONT IS FORECAST TO MOVE SWD
   ACROSS THE NRN PLAINS WITH A MOIST AND UNSTABLE AIRMASS LOCATED
   SOUTH OF THE FRONT. THUNDERSTORMS APPEAR LIKELY TO DEVELOP ALONG THE
   FRONT AND IN THE POST-FRONTAL AIRMASS BEHIND THE FRONT. SFC
   DEWPOINTS ACROSS MUCH OF THE CNTRL AND NRN PLAINS ON WEDNESDAY ARE
   FORECAST TO BE IN THE LOWER TO MID 60S F WHICH SHOULD RESULT IN
   POCKETS OF MODERATE INSTABILITY BY AFTERNOON. THIS COMBINED WITH 0-6
   KM SHEAR VALUES IN THE 30 TO 40 KT RANGE SHOULD BE ENOUGH FOR STORM
   ROTATION AND HAIL WITH THE STRONGER UPDRAFTS. A FEW MARGINALLY
   SEVERE WIND GUSTS WILL ALSO BE POSSIBLE WITH MULTICELLS THAT DEVELOP
   ALONG THE FRONT.

   ...NEW ENGLAND...
   AN UPPER-LEVEL TROUGH IS FORECAST TO MOVE EWD INTO THE CNTRL AND NRN
   APPALACHIAN MTNS ON WEDNESDAY AS A COLD FRONT ADVANCES EWD INTO WRN
   NEW ENGLAND. AHEAD OF THE FRONT...SFC DEWPOINTS SHOULD BE IN THE
   LOWER 60S F WITH SOME DESTABILIZATION TAKING PLACE BY EARLY
   AFTERNOON. FORECAST SOUNDINGS IN NEW HAMPSHIRE AND WRN MAINE ALONG
   THE MOIST AXIS AT 21Z/WED SHOW A SUBSTANTIAL AMOUNT OF SPEED SHEAR
   IN THE MID-LEVELS SUGGESTING THAT STORM ROTATION WILL BE POSSIBLE.
   HOWEVER...INSTABILITY IS FORECAST TO REMAIN WEAK SUGGESTING THAT ANY
   THREAT FOR STRONG WIND GUSTS AND HAIL SHOULD REMAIN MARGINAL.

   ..BROYLES.. 06/27/2016

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0730Z

        
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Page last modified: June 27, 2016
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