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 1684
< Previous MD         Next MD >
MD 1684 graphic

   MESOSCALE DISCUSSION 1684
   NWS STORM PREDICTION CENTER NORMAN OK
   0536 PM CDT FRI SEP 05 2014

   AREAS AFFECTED...NERN IL...NRN IND...SRN MI...NWRN OH...SRN LK
   MI...WRN LK ERIE

   CONCERNING...SEVERE THUNDERSTORM WATCH 495...

   VALID 052236Z - 060000Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 495
   CONTINUES.

   SUMMARY...THE THREAT FOR DAMAGING WIND AND ISOLATED LARGE HAIL
   CONTINUES ACROSS SVR TSTM WATCH 495 AND SURROUNDING AREAS. A LOCALLY
   ENHANCED DAMAGING WIND THREAT WILL CONTINUE ACROSS SRN MI FOR THE
   NEXT 1-2 HRS.

   DISCUSSION...AT 2230Z...SCATTERED STRONG TO SEVERE TSTMS ARE ONGOING
   IN AND NEAR WW 495. THE MOST ORGANIZED STORM STRUCTURE HAS BEEN
   OBSERVED WITH THE ONGOING SMALL BOW ECHO NOW MOVING ACROSS SWRN MI.
   CONVECTION ALONG THE SRN FLANK HAD WEAKENED EARLIER...BUT HAS
   RECENTLY INTENSIFIED AS IT BEGINS TO OVERTAKE A PREFRONTAL WIND
   SHIFT WHERE SFC CONVERGENCE AND INSTABILITY ARE SOMEWHAT STRONGER.
   AS THIS SYSTEM MERGES INTO MORE SCATTERED CONVECTION DEVELOPING
   ALONG AND AHEAD THE WIND SHIFT...A LOCALLY ENHANCED SEVERE WIND RISK
   WILL BE PROGRESS RAPIDLY EWD ACROSS SRN MI OVER THE NEXT 1-2
   HRS...POTENTIALLY AFFECTING THE DETROIT AREA BY 00Z.

   FURTHER TO THE SOUTHWEST...STRONG TO LOCALLY SEVERE TSTMS CONTINUE
   ACROSS NRN INDIANA AND ALONG THE COLD FRONT IN NRN IL. SUFFICIENT
   INSTABILITY/SHEAR WILL CONTINUE TO SUPPORT A SEVERE THREAT WITH THIS
   ACTIVITY FOR THE NEXT SEVERAL HOURS. SOME UPTICK IN THE DAMAGING
   WIND THREAT IS POSSIBLE AS THE FRONTAL CONVECTION CONSOLIDATES OVER
   NRN IL AND PROPAGATES INTO ONGOING CONVECTION ACROSS NRN IND INTO
   THE EVENING.

   ..DEAN.. 09/05/2014


   ATTN...WFO...CLE...ILN...DTX...IWX...GRR...IND...LOT...ILX...

   LAT...LON   40458713 40388824 40808888 41128902 42138778 42808656
               43188506 43648257 43328235 43048224 42598225 42238197
               41818192 41488194 40948197 40788301 40638415 40528485
               40458713 

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: September 06, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities