Severe Thunderstorm Watch 739

Issued

Jul 13, 2003, 2:40 PM MDT (20:40 UTC)

Expired

Jul 13, 2003, 9:00 PM MDT

In force

6 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 1812Jul 13, 2:13 PM MDT
• Mesoscale Discussion 1821Jul 13, 5:53 PM MDT
• Mesoscale Discussion 1826Jul 13, 7:44 PM MDT

000 
WWUS20 KWNS 132039
SEL9  
SPC WW 132040
NDZ000-140300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 739 
NWS STORM PREDICTION CENTER NORMAN OK 
340 PM CDT SUN JUL 13 2003

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 

       NORTH DAKOTA

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 340 PM UNTIL 1000
PM CDT.

HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 105 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 45 MILES WEST SOUTHWEST OF ROSEGLEN
NORTH DAKOTA TO 40 MILES SOUTH OF GRAND FORKS NORTH DAKOTA.

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 736...WW 737...WW 738...


DISCUSSION...VERY UNSTABLE AIR MASS HAS DEVELOPED ACROSS MUCH OF ND
AS SLY LOW LEVEL JET INCREASED AHEAD OF COLD FRONT MOVING THRU MT.
SEVERE THUNDERSTORMS WILL DEVELOP RAPIDLY ACROSS WRN ND WHERE AIR
MASS IS VERY WARM AND UNCAPPED.  STORMS THEN WILL MOVE/DEVELOP EWD
WITH INCREASING POTENTIAL FOR SUPERCELLS AS LOW LEVEL JET INCREASES.
 THIS WILL ENHANCE DAMAGING WIND AND LARGE HAIL THREAT.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 25035.


...HALES

490,1024 485,0971 455,0971 455,1024

Severe Thunderstorm Watches in North Dakota, 2003Every severe thunderstorm watch in 2003

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.