Tornado Watch 664

Issued

Aug 8, 2001, 6:00 PM CDT (23:00 UTC)

Expired

Aug 8, 2001, 11:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Fargo/Grand Forks radar (KMVX), 83 km from the middle of the area, began a volume at 23:01 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.

787 
WWUS9 KMKC 082249
SEL4  
MKC WW 082244
MNZ000-NDZ000-090400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 664
STORM PREDICTION CENTER NORMAN OK
544 PM CDT WED AUG 8 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

NORTHWEST MINNESOTA                          
EASTERN NORTH DAKOTA                       

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 600 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 45 MILES WEST SOUTHWEST OF DEVILS LAKE NORTH
DAKOTA TO 35 MILES SOUTHEAST OF THIEF RIVER FALLS MINNESOTA.

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 663...

DISCUSSION...SEVERE STORMS ARE DEVELOPING IN THE AREA W OF
DVL...AND ARE EXPECTED TO INCREASE IN COVERAGE/INTENSITY THROUGH
THE EVENING ACROSS ERN ND/NW MN.  DEEP LAYER SHEAR AND INSTABILITY
ARE FAVORABLE FOR SUPERCELLS...BUT LOW-LEVEL WINDS ARE WEAK. 
HOWEVER...RELATIVELY LOW LCL HEIGHTS AND LOCALLY ENHANCED SHEAR
ALONG NUMEROUS E-W BOUNDARIES WILL SUPPORT THE THREAT OF A FEW
TORNADOES.  LATER THIS EVENING...STORMS MAY EVOLVE INTO AN MCS WITH
DAMAGING WINDS BECOMING THE MAIN THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 28035.


...THOMPSON

485,0994 484,0953 463,0953 464,0994

Tornado Watches in North Dakota, 2001Tornado Watches in Minnesota, 2001Every tornado watch in 2001

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.