Tornado Watch 708

Issued

Sep 30, 2002, 3:05 PM CDT (20:05 UTC)

Expired

Sep 30, 2002, 8:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Minneapolis radar (KMPX), 121 km from the middle of the area, began a volume at 20:06 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
WWUS20 KWNS 302005
SEL8  
SPC WW 302005
MNZ000-WIZ000-LSZ000-010100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 708
STORM PREDICTION CENTER NORMAN OK
305 PM CDT MON SEP 30 2002

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

   EASTERN MINNESOTA                          
   NORTHWEST WISCONSIN                          
   SOUTHWEST LAKE SUPERIOR                      

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 305 PM UNTIL 800
PM CDT.

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 ALONG AND 90 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF EAU CLAIRE WISCONSIN TO
25 MILES EAST NORTHEAST OF DULUTH 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.

DISCUSSION...CU FIELD IS INCREASING ALONG WEAK SURFACE CONFLUENCE
LINE NEAR MSP.  THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THIS AREA
DURING THE NEXT 1-2 HOURS...SPREADING EASTWARD INTO WI DURING THE
EVENING.  DEEP LAYER VERTICAL SHEAR IS FAVORABLE FOR
SUPERCELLS...AND LOW LEVEL SHEAR SUPPORTS THE THREAT OF A FEW
TORNADOES.  OTHERWISE...COLD AIR ALOFT AND ROTATING UPDRAFTS
SUGGEST THE THREAT OF LARGE HAIL IN STRONGER CELLS.

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 26030.

...HART

465,0894 441,0900 441,0934 465,0933

Tornado Watches in Wisconsin, 2002Tornado Watches in Minnesota, 2002Every tornado watch in 2002

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.