

476 

WWUS20 KWNS 040648

SEL2

SPC WW 040648

MNZ000-NDZ000-041200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 492

NWS STORM PREDICTION CENTER NORMAN OK

150 AM CDT THU SEP 4 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  PART OF WEST CENTRAL AND NORTHWEST MINNESOTA

  SOUTH CENTRAL AND SOUTHEAST NORTH DAKOTA



* EFFECTIVE THIS THURSDAY MORNING FROM 150 AM UNTIL 700 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    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 65 MILES WEST OF

JAMESTOWN NORTH DAKOTA TO 40 MILES EAST SOUTHEAST OF DETROIT

LAKES MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 490. WATCH NUMBER 490 WILL NOT

BE IN EFFECT AFTER 150 AM CDT.



DISCUSSION...DISCRETE SUPERCELLS IN CENTRAL ND MAY PERSIST FOR

ANOTHER 2-3 HOURS...WHILE NEW STORMS DEVELOP IN A ZONE OF FOCUSED

WARM ADVECTION/ASCENT ACROSS SE ND.  THESE ONGOING STORMS WILL BE

CAPABLE OF PRODUCING ISOLATED VERY LARGE HAIL AND DAMAGING

WINDS...DESPITE BEING SLIGHT ELEVATED.  SOME UPSCALE GROWTH IS

LIKELY THROUGH THE EARLY MORNING HOURS FROM ND INTO MN...WITH THE

POTENTIAL FOR A SMALL BOWING MCS CAPABLE OF PRODUCING DAMAGING WINDS

AND LARGE HAIL.



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 28030.





...THOMPSON



439 

WWUS20 KWNS 040648

SEL2

SPC WW 040648

MNZ000-NDZ000-041200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 492

NWS STORM PREDICTION CENTER NORMAN OK

150 AM CDT THU SEP 4 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  PART OF WEST CENTRAL AND NORTHWEST MINNESOTA

  SOUTH CENTRAL AND SOUTHEAST NORTH DAKOTA



* EFFECTIVE THIS THURSDAY MORNING FROM 150 AM UNTIL 700 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    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 65 MILES WEST OF

JAMESTOWN NORTH DAKOTA TO 40 MILES EAST SOUTHEAST OF DETROIT

LAKES MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 490. WATCH NUMBER 490 WILL NOT

BE IN EFFECT AFTER 150 AM CDT.



DISCUSSION...DISCRETE SUPERCELLS IN CENTRAL ND MAY PERSIST FOR

ANOTHER 2-3 HOURS...WHILE NEW STORMS DEVELOP IN A ZONE OF FOCUSED

WARM ADVECTION/ASCENT ACROSS SE ND.  THESE ONGOING STORMS WILL BE

CAPABLE OF PRODUCING ISOLATED VERY LARGE HAIL AND DAMAGING

WINDS...DESPITE BEING SLIGHT ELEVATED.  SOME UPSCALE GROWTH IS

LIKELY THROUGH THE EARLY MORNING HOURS FROM ND INTO MN...WITH THE

POTENTIAL FOR A SMALL BOWING MCS CAPABLE OF PRODUCING DAMAGING WINDS

AND LARGE HAIL.



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 28030.





...THOMPSON

