By Dan (
June 12, 2008 at 8:00 pm)
· Filed under Severe
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 516
NWS STORM PREDICTION CENTER NORMAN OK
750 PM CDT THU JUN 12 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST AND EAST CENTRAL IOWA
NORTHERN ILLINOIS
EXTREME NORTHEAST MISSOURI
SOUTHERN WISCONSIN
LAKE MICHIGAN
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 750 PM
UNTIL 200 AM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 30 MILES EAST NORTHEAST OF
RACINE WISCONSIN TO 55 MILES WEST SOUTHWEST OF BURLINGTON IOWA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 513. WATCH NUMBER 513 WILL NOT BE IN EFFECT AFTER
750 PM CDT. CONTINUE...WW 514...WW 515...
DISCUSSION...BAND OF STRONG/SEVERE STORMS IS LOCATED FROM SRN WI
SWWD INTO SERN IA...WITH ISOLATED SUPERCELLS EVIDENT IN RADAR
IMAGERY. AIR MASS TO THE SOUTH OF THE CONVECTION REMAINS WARM AND
MOIST WITH SURFACE TEMPERATURES IN THE UPPER 80S AND DEW POINTS IN
THE 65-70 RANGE. THIS IS CONTRIBUTING TO AN UNSTABLE ENVIRONMENT
WITH MLCAPE OF 1000-1500 J/KG. WINDS VEER AND INCREASE WITH HEIGHT
ACROSS THE REGION ALONG THE SERN PERIPHERY OF PRIMARY MID/UPPER
LEVEL JET STREAK LIFTING NEWD ACROSS IA AND MN...RESULTING IN STRONG
DEEP LAYER SHEAR AND SUFFICIENT LOW LEVEL SHEAR TO SUPPORT SEVERE
STORMS INCLUDING A FEW SUPERCELLS. DAMAGING WIND GUSTS AND LARGE
HAIL...ALONG WITH ISOLATED TORNADOES...WILL BE POSSIBLE WITH
STRONGEST CELLS. ACTIVITY IS EXPECTED TO CONTINUE SPREADING
NEWD/ENEWD TONIGHT...WITH POSSIBILITY OF ADDITIONAL SEVERE STORMS
DEVELOPING OVER NRN MO AND SPREADING INTO SWRN PART OF THE WW LATER
THIS EVENING.
Permalink
