Severe Thunderstorm Watch 430

Issued

Jun 9, 1999, 3:15 PM CDT (20:15 UTC)

Expired

Jun 9, 1999, 9:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

The Fargo/Grand Forks radar (KMVX), 198 km from the middle of the area, began a volume at 20:16 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
WWUS9 KMKC 091945
MKC WW 091945
MNZ000-100200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 430
STORM PREDICTION CENTER NORMAN OK
245 PM CDT WED JUN 9 1999

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

   CENTRAL AND NORTHERN MINNESOTA                          

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
900 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES SOUTH OF ALEXANDRIA MINNESOTA
TO 15 MILES WEST NORTHWEST OF INTERNATIONAL FALLS MINNESOTA.

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.

OTHER WATCH INFORMATION...  CONTINUE...WW 429...

DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INCREASE AHEAD OF COLD
FRONT AS CAP WEAKENS AND LOW LEVEL CONVERGENCE INCREASES AHEAD OF
WEAK SURFACE LOW NEAR FARGO. DEEP LAYER SHEAR WILL SUPPORT
ORGANIZED SEVERE THUNDERSTORMS...AND POSSIBLY A COUPLE OF
SUPERCELLS. MAIN THREAT APPEARS TO BE LARGE HAIL AND A FEW DAMAGING
WIND GUSTS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITjH 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 23030.


...VESCIO

;452,0965 483,0952 483,0920 452,0935;

Severe Thunderstorm Watches in Minnesota, 1999Every severe thunderstorm watch in 1999

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; radar from the NEXRAD Level II archive.