

926 

WWUS20 KWNS 041240

SEL4

SPC WW 041240

MIZ000-WIZ000-LSZ000-041700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 494

NWS STORM PREDICTION CENTER NORMAN OK

745 AM CDT THU SEP 4 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  PART OF WESTERN UPPER MICHIGAN

  NORTHERN WISCONSIN

  LAKE SUPERIOR



* EFFECTIVE THIS THURSDAY MORNING FROM 745 AM UNTIL NOON CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST

OF KENNEDY WISCONSIN TO 25 MILES EAST SOUTHEAST OF IRON MOUNTAIN

MICHIGAN.  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 493...



DISCUSSION...CLUSTER OF SUPERCELLS WILL LIKELY PERSIST FOR SEVERAL

MORE HOURS WHILE MOVING GENERALLY EWD TO THE IMMEDIATE N OF THE

SURFACE WARM FRONT.  MODERATE INSTABILITY AND STRONG VERTICAL SHEAR

N OF THE BOUNDARY WILL MAINTAIN A RISK FOR LARGE HAIL AND DAMAGING

WINDS...WHILE THE INCREASING CAP NOTED IN THE 12Z MPX SOUNDING

LIMITS THE SRN EXTENT OF THE THREAT.



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 550. MEAN STORM

MOTION VECTOR 28035.





...THOMPSON



934 

WWUS20 KWNS 041240

SEL4

SPC WW 041240

MIZ000-WIZ000-LSZ000-041700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 494

NWS STORM PREDICTION CENTER NORMAN OK

745 AM CDT THU SEP 4 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  PART OF WESTERN UPPER MICHIGAN

  NORTHERN WISCONSIN

  LAKE SUPERIOR



* EFFECTIVE THIS THURSDAY MORNING FROM 745 AM UNTIL NOON CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST

OF KENNEDY WISCONSIN TO 25 MILES EAST SOUTHEAST OF IRON MOUNTAIN

MICHIGAN.  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 493...



DISCUSSION...CLUSTER OF SUPERCELLS WILL LIKELY PERSIST FOR SEVERAL

MORE HOURS WHILE MOVING GENERALLY EWD TO THE IMMEDIATE N OF THE

SURFACE WARM FRONT.  MODERATE INSTABILITY AND STRONG VERTICAL SHEAR

N OF THE BOUNDARY WILL MAINTAIN A RISK FOR LARGE HAIL AND DAMAGING

WINDS...WHILE THE INCREASING CAP NOTED IN THE 12Z MPX SOUNDING

LIMITS THE SRN EXTENT OF THE THREAT.



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 550. MEAN STORM

MOTION VECTOR 28035.





...THOMPSON

