Tornado Watch 522

Issued

Jun 26, 2009, 6:43 PM CDT (23:43 UTC)

Expired

Jun 26, 2009, 10:45 PM CDT

In force

4 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 1342Jun 26, 5:45 PM CDT
• Mesoscale Discussion 1349Jun 26, 9:19 PM CDT

202 
WWUS20 KWNS 262340
SEL2  
SPC WW 262340
MNZ000-NDZ000-270500-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 522
NWS STORM PREDICTION CENTER NORMAN OK
640 PM CDT FRI JUN 26 2009

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

       NORTHWESTERN MINNESOTA
       PORTIONS OF CENTRAL AND EASTERN NORTH DAKOTA

EFFECTIVE THIS FRIDAY NIGHT FROM 640 PM UNTIL MIDNIGHT 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 APPROXIMATELY ALONG AND 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTHWEST OF
GARRISON NORTH DAKOTA TO 40 MILES EAST SOUTHEAST OF THIEF RIVER
FALLS MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 517...WW 518...WW
519...WW 520...WW 521...

DISCUSSION...SUPERCELLS HAVE DEVELOPED THIS EVENING ALONG COMPOSITE
WARM FRONT/OUTFLOW BOUNDARY FROM VICINITY OF SURFACE LOW NW OF BIS
TO NEAR GFK.  SLY LLJ SHOULD INTENSIFY THROUGH THE EVENING OVER THE
ERN DAKOTAS ENHANCING ASCENT AND LOW-LEVEL SHEAR ALONG FRONTAL
BOUNDARY WITH A CONTINUED THREAT OF SUPERCELLS CAPABLE OF TORNADOES.

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 25030.


...MEAD/HALES

Tornado Watches in North Dakota, 2009Tornado Watches in Minnesota, 2009Every tornado watch in 2009

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.