

130 

WWUS20 KWNS 230251

SEL0

SPC WW 230251

NDZ000-230900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 350

NWS STORM PREDICTION CENTER NORMAN OK

950 PM CDT SAT JUN 22 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND EASTERN NORTH DAKOTA



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 950 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75

    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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH

NORTHWEST OF DEVILS LAKE NORTH DAKOTA TO 65 MILES SOUTH SOUTHEAST

OF BISMARCK NORTH DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 345. WATCH NUMBER 345 WILL NOT

BE IN EFFECT AFTER 950 PM CDT. CONTINUE...WW 346...WW 347...WW

348...WW 349...



DISCUSSION...WELL-DEVELOPED MCS WITH EMBEDDED BOWING STRUCTURES NOW

OVER S CNTRL ND /REF. MCD 1181/ SHOULD CONTINUE GENERALLY NEWD. BOTH

LOW-LVL UPLIFT ALONG EXISTING STORM OUTFLOW BOUNDARY...AND

LARGE-SCALE ASCENT PROVIDED BY APPROACHING UPR-LVL DISTURBANCES...

SHOULD MAINTAIN ENVIRONMENT FAVORABLE FOR STORM DEVELOPMENT DESPITE

TIME OF DAY...ESPECIALLY GIVEN RATHER RICH MOISTURE INFLOW.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 23035.





...CORFIDI

