TORNADO WATCH FOR PORTIONS OF
WESTERN NORTH DAKOTA
NORTHWEST AND NORTH CENTRAL SOUTH DAKOTA
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1100 PM MDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 65 MILES WEST NORTHWEST OF
DICKINSON NORTH DAKOTA TO 40 MILES SOUTH OF BISMARCK NORTH
DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 650...
DISCUSSION...AREA OF BACKED/MODERATELY STRONG LOW LVL FLOW EXPECTED
TO PERSIST INVOF NW-SE ORIENTED WARM FRONT FROM W CNTRL ND INTO N
CNTRL SD THIS EVE. CONTINUED EWD ADVANCE OF WRN STATES UPR TROUGH
AND SFC HEATING SHOULD SUPPORT ADDITIONAL SFC-BASED STORM
DEVELOPMENT IN PLUME OF DEEPLY-MIXED AIR EXTENDING FROM ERN WY/WRN
SD NNE INTO SW ND. AS THE STORMS MOVE NNE WITHIN STRENGTHENING
MID/UPR LVL FLOW...POTENTIAL MAY INCREASE FOR LOW LVL STORM ROTATION
AS POSSIBLE TORNADOES AS THE UPDRAFTS ENCOUNTER AND/OR MOVE IN
TANDEM WITH WARM FRONT.
AVIATION...TORNADOES AND 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.
...CORFIDI
**This information should not be used to make life or death decisions.
For official warnings and statements tune to your local broadcast stations
or visit http://weather.gov
