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 1467
< Previous MD         Next MD >
MD 1467 graphic

   MESOSCALE DISCUSSION 1467
   NWS STORM PREDICTION CENTER NORMAN OK
   0321 PM CDT SAT JUL 18 2015

   AREAS AFFECTED...WRN AND CENTRAL LOWER MI/NRN INDIANA

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 182021Z - 182145Z

   PROBABILITY OF WATCH ISSUANCE...60 PERCENT

   SUMMARY...STORMS SPREADING EWD TOWARD LK MI MAY EVENTUALLY POSE A
   SEVERE/TORNADO RISK ACROSS PORTIONS OF LOWER MI AND NRN INDIANA.  WW
   MAY BE NEEDED IN THE NEXT HOUR OR SO.

   DISCUSSION...LATEST RADAR LOOP SHOWS A DEVELOPING BAND OF CONVECTION
   APPROACHING WRN LK MI ATTM...WITH SEVERAL CELLS SHOWING SOME
   ROTATION OVER THE PAST HOUR -- INCLUDING ONE TORNADO REPORT.  THE
   STORMS ARE OCCURRING ON THE SRN FRINGE OF A WEAK VORT MAX -- SE OF
   THE MAIN SRN MANITOBA/WRN ONTARIO FEATURE -- NOW MOVING ACROSS UPPER
   MI/LK SUPERIOR.  

   AS AN EARLIER OUTFLOW BOUNDARY RETREATS NWD ACROSS NWRN INDIANA INTO
   SWRN LOWER MI...DIURNAL HEATING HAS ALLOWED DESTABILIZATION TO OCCUR
   NWD TOWARD GRR/MKG...WHICH SHOULD ALLOW STORMS CROSSING THE LAKE TO
   PERSIST/RE-INTENSIFY ACROSS THE MD AREA.  WITH THE LATEST GRR VWP
   SHOWING SUBSTANTIAL VEERING/INCREASING SPEED OF THE FLOW FIELD WITH
   HEIGHT...RISK FOR SEVERE/ROTATING STORMS SHOULD LIKEWISE INCREASE --
   POSSIBLY REQUIRING WW ISSUANCE OVER THE NEXT HOUR OR SO.

   ..GOSS/CORFIDI.. 07/18/2015


   ATTN...WFO...DTX...IWX...GRR...IND...LOT...

   LAT...LON   43918619 43918538 43158422 41168503 40358551 40558706
               43918619 

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 18, 2015
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities