

395 

WWUS20 KWNS 100155

SEL1

SPC WW 100155

INZ000-MIZ000-LMZ000-100700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 51

NWS STORM PREDICTION CENTER NORMAN OK

955 PM EDT THU APR 9 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHERN INDIANA

  CENTRAL AND SOUTHERN LOWER MICHIGAN

  LAKE MICHIGAN



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 955 PM

  UNTIL 300 AM EDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH

NORTHEAST OF MUSKEGON MICHIGAN TO 60 MILES WEST SOUTHWEST OF FORT

WAYNE INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 40...WW 41...WW 42...WW

43...WW 44...WW 45...WW 46...WW 49...WW 50...



DISCUSSION...SCATTERED STRONG TO SEVERE THUNDERSTORMS WILL TRACK

EASTWARD INTO PARTS OF LOWER MI AND NORTHERN IND THIS EVENING.

DESPITE WEAKENING INSTABILITY...STRENGTHENING WINDS ALOFT WILL

SUPPORT SOME RISK OF CONTINUED ORGANIZED STORMS AND DAMAGING

WINDS/HAIL FOR A FEW MORE HOURS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 24035.





...HART



067 

WWUS20 KWNS 100155

SEL1

SPC WW 100155

INZ000-MIZ000-LMZ000-100700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 51

NWS STORM PREDICTION CENTER NORMAN OK

955 PM EDT THU APR 9 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHERN INDIANA

  CENTRAL AND SOUTHERN LOWER MICHIGAN

  LAKE MICHIGAN



* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 955 PM

  UNTIL 300 AM EDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH

NORTHEAST OF MUSKEGON MICHIGAN TO 60 MILES WEST SOUTHWEST OF FORT

WAYNE INDIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 40...WW 41...WW 42...WW

43...WW 44...WW 45...WW 46...WW 49...WW 50...



DISCUSSION...SCATTERED STRONG TO SEVERE THUNDERSTORMS WILL TRACK

EASTWARD INTO PARTS OF LOWER MI AND NORTHERN IND THIS EVENING.

DESPITE WEAKENING INSTABILITY...STRENGTHENING WINDS ALOFT WILL

SUPPORT SOME RISK OF CONTINUED ORGANIZED STORMS AND DAMAGING

WINDS/HAIL FOR A FEW MORE HOURS.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 24035.





...HART

