Tornado Watch 403

Issued

May 30, 2011, 3:52 PM CDT (20:52 UTC)

Expired

May 30, 2011, 10:44 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

65 kt

The Aberdeen radar (KABR), 168 km from the middle of the area, began a volume at 20:53 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

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

40%

Ten or more severe hail reports

70%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 1029May 30, 1:40 PM CDT
• Mesoscale Discussion 1034May 30, 6:17 PM CDT
• Mesoscale Discussion 1036May 30, 10:09 PM CDT

704 
WWUS20 KWNS 302055
SEL3  
SPC WW 302055
MNZ000-NDZ000-SDZ000-310400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 403
NWS STORM PREDICTION CENTER NORMAN OK
355 PM CDT MON MAY 30 2011

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

       WESTERN AND CENTRAL MINNESOTA
       SOUTHEAST NORTH DAKOTA
       NORTHEAST SOUTH DAKOTA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES EAST SOUTHEAST OF
WATERTOWN SOUTH DAKOTA TO 20 MILES WEST NORTHWEST OF BEMIDJI
MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 402...

DISCUSSION...SEVERE TSTMS ARE EXPECTED TO RAPIDLY DEVELOP LATE THIS
AFTERNOON/EARLY EVENING ACROSS EASTERN PORTIONS OF THE DAKOTAS INTO
WESTERN MN. IN THE WAKE OF A NORTHWARD MOVING WARM
FRONT...ADDITIONAL DESTABILIZATION WILL OCCUR OVER THE NEXT SEVERAL
HOURS...WITH A HIGHLY SHEARED ENVIRONMENT FAVORABLE FOR SUSTAINED
SEVERE TSTMS. INITIAL MODE SUPERCELLS CAPABLE OF LARGE
HAIL/TORNADOES CAN BE EXPECTED...WITH A QUASI-LINEAR EVOLUTION
LIKELY TO OCCUR LATER THIS EVENING INCLUDING A POTENTIALLY MORE
WIDESPREAD DAMAGING WIND AND ISOLATED TORNADO THREAT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 22040.


...GUYER/HART

Tornado Watches in Minnesota, 2011Tornado Watches in South Dakota, 2011Tornado Watches in North Dakota, 2011Every tornado watch in 2011

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.