Tornado Watch 438

Issued

Jun 11, 2004, 5:00 PM CDT (22:00 UTC)

Expired

Jun 11, 2004, 11:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 22:01 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.

• Mesoscale Discussion 1191Jun 11, 3:03 PM CDT
• Mesoscale Discussion 1200Jun 11, 7:57 PM CDT

000 
WWUS20 KWNS 112158
SEL8  
SPC WW 112200
IAZ000-MNZ000-WIZ000-120400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 438
NWS STORM PREDICTION CENTER NORMAN OK
500 PM CDT FRI JUN 11 2004

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

       NORTHERN IOWA
       SOUTHERN AND CENTRAL MINNESOTA
       WESTERN WISCONSIN

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1100
PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS ALONG AND 110 STATUTE MILES EAST AND
WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF SAINT CLOUD
MINNESOTA TO 25 MILES SOUTHWEST OF WATERLOO IOWA.

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 436. WATCH NUMBER 436 WILL NOT BE IN EFFECT AFTER 500
PM CDT. CONTINUE...WW 435...WW 437...

DISCUSSION...SUPERCELLS/SUPERCELLS CLUSTERS EXPECTED TO PERSIST
INVOF WARM FRONT/DRY LINE INTERSECTION IN THE SRN MN/NRN IA
AREA...WHERE LOW LEVEL CONVERGENCE/MOISTURE INFLOW WILL CONTINUE
DOWNSTREAM FROM SD NEG TILT UPPER IMPULSE.  OTHER STORMS MAY FORM
ALONG/ABOVE COLD POOL LEFT BY PRESENT STORMS AS INFLOW OF UNSTABLE
SWLY FLOW LINGERS IN WAKE OF CURRENT ACTIVITY.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 23030.


...CORFIDI

454,0915 421,0903 421,0945 454,0962

Tornado Watches in Minnesota, 2004Tornado Watches in Iowa, 2004Tornado Watches in Wisconsin, 2004Every tornado watch in 2004

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.