Severe Thunderstorm Watch 372

Issued

Jun 11, 2012, 9:45 AM CDT (14:45 UTC)

Expired

Jun 11, 2012, 4:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Springfield radar (KSGF), 111 km from the middle of the area, began a volume at 14:44 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

90%

One or more gusts of 65 knots or more

40%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

90%

• Mesoscale Discussion 1119Jun 11, 9:31 AM CDT
• Mesoscale Discussion 1122Jun 11, 1:12 PM CDT
• Mesoscale Discussion 1126Jun 11, 3:59 PM CDT

010 
WWUS20 KWNS 111448
SEL2
SPC WW 111448
ARZ000-MOZ000-TNZ000-112100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 372
NWS STORM PREDICTION CENTER NORMAN OK
950 AM CDT MON JUN 11 2012

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

       NORTHERN ARKANSAS
       SOUTHERN MISSOURI
       EXTREME NORTHWEST TENNESSEE

EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 950 AM UNTIL 400
PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 5 MILES WEST
NORTHWEST OF FAYETTEVILLE ARKANSAS TO 50 MILES EAST NORTHEAST OF
POPLAR BLUFF MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

DISCUSSION...VERY UNSTABLE CONDITIONS ARE EXPECTED TO DEVELOP AHEAD
OF A MATURE MCS CURRENTLY ACROSS SWRN AND SCNTRL MO. LIFT ALONG THE
MCS COLD POOL WILL DEVELOP SOUTH INTO THIS AIR MASS OVER THE NEXT
FEW HOURS AND SHOULD SUPPORT A CONTINUING THREAT OF SEVERE STORMS
WITH HAIL AND HIGH WINDS. SOME UNCERTAINTY EXISTS ACROSS THE WRN
EDGE OF THE WATCH AREA WHERE MID LEVEL CAPPING MAY REMAIN TOO STRONG
FOR STORMS TO FORM. HOWEVER...LATEST TRENDS IN RADAR AND SATELLITE
IMAGERY SUGGEST THAT A WATCH IS WARRANTED ACROSS THESE AREAS FOR THE
TIME BEING WITH AN INCREASING POTENTIAL FOR A FORWARD PROPAGATING
MCS TO DEVELOP ACROSS CNTRL AND ERN PORTIONS OF THE WATCH...FROM
SERN MO INTO THE LOWER MS RIVER VALLEY...LATER TODAY.

AVIATION...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 31030.


...CARBIN

Severe Thunderstorm Watches in Missouri, 2012Severe Thunderstorm Watches in Arkansas, 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.