Severe Thunderstorm Watch 307

Issued

May 27, 2012, 6:08 PM CDT (23:08 UTC)

Expired

May 28, 2012, 1:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

65 kt

The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 23:09 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.

Two or more tornadoes

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

50%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 923May 27, 2:58 PM CDT
• Mesoscale Discussion 926May 27, 3:49 PM CDT
• Mesoscale Discussion 929May 27, 6:55 PM CDT
• Mesoscale Discussion 931May 27, 7:47 PM CDT
• Mesoscale Discussion 933May 27, 9:51 PM CDT
• Mesoscale Discussion 934May 27, 10:11 PM CDT

975 
WWUS20 KWNS 272307
SEL7
SPC WW 272307
MNZ000-WIZ000-280600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 307
NWS STORM PREDICTION CENTER NORMAN OK
610 PM CDT SUN MAY 27 2012

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

       CENTRAL AND SOUTHERN MINNESOTA
       WESTERN WISCONSIN

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 610 PM UNTIL
100 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES SOUTHWEST OF
MANKATO MINNESOTA TO 45 MILES NORTHEAST OF BRAINERD MINNESOTA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

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 304...WW 305...WW 306...

DISCUSSION...SCATTERED THUNDERSTORMS ARE BEGINNING TO INCREASE IN
COVERAGE ACROSS PARTS OF SOUTHERN MN...WHILE SEVERAL INTENSE STORMS
APPROACH THE REGION FROM THE SOUTHWEST.  STRONG TO SEVERE STORMS ARE
EXPECTED TO AFFECT THE WATCH AREA THROUGH THE EVENING.  AN ISOLATED
TORNADO CANNOT BE RULED OUT...BUT THE MAIN THREAT SHOULD BE LARGE
HAIL AND DAMAGING WINDS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24035.


...HART

Severe Thunderstorm Watches in Minnesota, 2012Severe Thunderstorm Watches in Wisconsin, 2012Every severe thunderstorm watch in 2012

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.