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 34
< Previous WW         Next WW >
  | | | | | |  
WW0034 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
High Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 34
   NWS STORM PREDICTION CENTER NORMAN OK
   105 PM CDT WED APR 8 2015

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND SOUTHERN ILLINOIS
     CENTRAL AND SOUTHERN INDIANA
     EASTERN MISSOURI

   * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 105 PM
     UNTIL 600 PM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS
       TO 2.5 INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 160
   STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST
   NORTHWEST OF DANVILLE ILLINOIS TO 25 MILES SOUTH SOUTHWEST OF
   MOUNT VERNON ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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 32...WW 33...

   DISCUSSION...WAA/MOISTURE TRANSPORT EXPECTED TO CONTINUE BETWEEN SFC
   STNRY/WARM FRONT EXTENDING ROUGHLY W-E ALONG SRN PART OF WW...AND
   850 MB BOUNDARY ALONG APPROXIMATELY THE SAME ORIENTATION NEAR THE
   NRN PART OF WW. COMBINATION OF SFC HEATING WITH EXISTING EML IN THIS
   ENVIRONMENT COULD SUPPORT SCTD CLUSTERS OF STORMS WITH A RISK FOR
   LARGE HAIL/LOCALLY DMGG WIND GIVEN 35-40 WLY DEEP SHEAR.
   A NON-ZERO THREAT ALSO WILL EXIST FOR A TORNADO OR TWO...MOST LIKELY
   IN SRN AND WRN PART OF WW. THIS THREAT LARGELY WILL BE DEPENDENT
   UPON THE PRESENCE OF SUSTAINED SUPERCELL UPDRAFTS MOVING PARALLEL TO
   SFC FRONT/OUTFLOW BOUNDARY SEGMENTS. IF IT BECOME MORE APPARENT THAT
   THIS SCENARIO WILL INDEED EVOLVE...PARTS OF THE WW COULD REQUIRE
   UPGRADE TO TORNADO LATER THIS AFTN.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 25035.


   ...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: April 08, 2015
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities