Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 1557
< Previous MD         Next MD >
MD 1557 graphic

   MESOSCALE DISCUSSION 1557
   NWS STORM PREDICTION CENTER NORMAN OK
   0651 PM CDT MON JUL 27 2015

   AREAS AFFECTED...PORTIONS OF NERN MT...WRN/CNTRL ND...CNTRL/N-CNTRL
   SD

   CONCERNING...SEVERE POTENTIAL...SEVERE THUNDERSTORM WATCH LIKELY 

   VALID 272351Z - 280215Z

   PROBABILITY OF WATCH ISSUANCE...95 PERCENT

   SUMMARY...SEVERE THUNDERSTORM WATCH ISSUANCE REMAINS LIKELY THIS
   EVENING...MOST LIKELY BEFORE 01Z...ACROSS PARTS OF NERN MT INTO
   WRN/CNTRL ND...AND WILL LIKELY EXTEND INTO CNTRL SD.

   DISCUSSION...AS ADDRESSED IN PREVIOUSLY ISSUED MCD 1554 FOR PARTS OF
   THE AREA...A SEVERE THUNDERSTORM WATCH WILL LIKELY BE ISSUED IN
   PARTS OF NERN MT AND WRN/CNTRL ND. CONVECTION HAS BEEN SOMEWHAT SLOW
   TO ENTER THESE AREAS OUT OF UPSTREAM WW 456. HOWEVER...WITH WATER
   VAPOR LOOPS SUGGESTING FORCING FOR ASCENT CONTINUING TO OVERTAKE THE
   ANTECEDENTLY CAPPED...BUT STRONGLY UNSTABLE...BOUNDARY-LAYER
   AIR...THE SVR WIND/HAIL RISK WILL LIKELY INCREASE GOING INTO THE
   NEXT FEW HOURS. FURTHERMORE...MULTICELL CLUSTERS AND A SUPERCELL
   EVOLVING OVER WRN SD WILL LIKELY SPREAD INTO CNTRL SD INTO THE
   EVENING HOURS AS LARGE-SCALE ASCENT INCREASES. THE NEW WW WOULD
   LIKELY EXTEND SWD INTO CNTRL SD...AS WELL.

   ..COHEN/DIAL.. 07/27/2015


   ATTN...WFO...ABR...BIS...GGW...

   LAT...LON   44100064 45890145 46430350 47960493 48700538 48940380
               48740146 47730034 45419916 44129963 44100064 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: July 28, 2015
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities