Tornado Watch 348

Issued

May 24, 2008, 2:39 PM CDT (19:39 UTC)

Expired

May 24, 2008, 9:14 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Aberdeen radar (KABR), 182 km from the middle of the area, began a volume at 19:41 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

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1001May 24, 1:18 PM CDT
• Mesoscale Discussion 1003May 24, 2:17 PM CDT
• Mesoscale Discussion 1009May 24, 6:07 PM CDT
• Mesoscale Discussion 1014May 24, 9:01 PM CDT

000
WWUS20 KWNS 241938
SEL8  
SPC WW 241938
SDZ000-250300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 348
NWS STORM PREDICTION CENTER NORMAN OK
240 PM CDT SAT MAY 24 2008

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

       LARGE PART OF CENTRAL AND EASTERN SOUTH DAKOTA

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 240 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2.5 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHWEST OF
MOBRIDGE SOUTH DAKOTA TO 55 MILES SOUTH OF CHAMBERLAIN SOUTH
DAKOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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 346...WW 347...

DISCUSSION...STRONG TROUGH/MID LEVEL JET MAX ROTATING NEWD ACROSS
SD.  AIR MASS IS RAPIDLY DESTABILIZING NWD AHEAD OF COLD FRONT WRN
SD.  THUNDERSTORMS WILL INCREASE IN NUMBER/INTENSITY WITH POTENTIAL
FOR SUPERCELLS.  LARGE HAIL AND POSSIBLE TORNADOS PARTICULARLY
ASSOCIATED WITH ANY SUPERCELL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23040.


...HALES

Tornado Watches in South Dakota, 2008Every tornado watch in 2008

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.