

632 

WWUS20 KWNS 252241

SEL6

SPC WW 252241

MIZ000-LEZ000-260400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 366

NWS STORM PREDICTION CENTER NORMAN OK

640 PM EDT TUE JUN 25 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHERN LOWER MICHIGAN

  LAKE ERIE



* EFFECTIVE THIS TUESDAY NIGHT FROM 640 PM UNTIL MIDNIGHT EDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF ANN

ARBOR MICHIGAN TO 40 MILES SOUTH SOUTHWEST OF JACKSON MICHIGAN.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 361...WW 362...WW

363...WW 364...WW 365...



DISCUSSION...TSTMS NOW FORMING IN SW LWR MI...ALONG INTERSECTION OF

LAKE BREEZE BOUNDARY AND W-E OUTFLOW BOUNDARY FROM EARLIER

STORMS...EXPECTED TO PERSIST AND POSSIBLY STRENGTHEN AS LOW-LVL

CONVERGENCE/HEATING CONTINUE ACROSS REGION. AREA VWP DATA WITH

MODERATE...UNIDIRECTIONAL DEEP WLY WINDS SUGGEST POTENTIAL FOR A FEW

SUSTAINED STORMS/BOWING SEGMENTS CAPABLE OF DMGG WIND...MARGINALLY

SVR HAIL...AND PERHAPS A TORNADO THROUGH MID TO LATE EVE AS THE

ACTIVITY MOVES/PROPAGATES MAINLY EWD.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 27035.





...CORFIDI

