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.

Severe Thunderstorm Watch 746
< Previous WW          Next WW >
  | | | | | |  
WW0746 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
High Moderate
Severe Hail 2"+ Hail
Low Very Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 746
   NWS STORM PREDICTION CENTER NORMAN OK
   1045 PM EDT SUN SEP 27 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN INDIANA
          SOUTHERN AND CENTRAL MICHIGAN
          NORTHWEST OHIO
          LAKE ERIE
          LAKE HURON
          LAKE MICHIGAN
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1045 PM UNTIL
   600 AM EDT.
   
   HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
   STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTHWEST OF
   FORT WAYNE INDIANA TO 35 MILES WEST NORTHWEST OF SAGINAW
   MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 745...
   
   DISCUSSION...TSTMS NOW FORMING ALONG STRENGTHENING COLD FRONT OVER
   ERN WI/NRN IL EXPECTED TO FUSE INTO A NEARLY SOLID LINE AS UPR VORT
   NOW NEAR MSP AMPLIFIES SEWD.  ALTHOUGH SFC-BASED INSTABILITY WILL
   REMAIN LIMITED GIVEN TIME OF DAY AND UPSTREAM MOISTURE ENVIRONMENT
   ...STRENGTH OF DEEP WIND FIELD...INCREASING LARGE SCALE ASCENT...AND
   FRONTAL UPLIFT TOGETHER EXPECTED TO SUPPORT A LINE OF STG TO SVR
   CONVECTION/STORMS.  EMBEDDED SUPERCELLS/BOWING STRUCTURES COULD
   YIELD DMGG WIND...MARGINALLY SVR HAIL...AND PERHAPS A TORNADO IN
   LEFT EXIT REGION OF 100+ KT 500 MB JET STREAK.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM
   MOTION VECTOR 26050.
   
   
   ...CORFIDI
Top of Page/Status Messages for this watch/All Current Watches/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 28, 2009
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities