Severe Thunderstorm Watch 375

Issued

Jun 11, 2012, 5:17 PM CDT (22:17 UTC)

Expired

Jun 11, 2012, 11:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Jackson/Brandon,MS radar (KDGX), 111 km from the middle of the area, began a volume at 22:21 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

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1127Jun 11, 5:05 PM CDT
• Mesoscale Discussion 1129Jun 11, 7:33 PM CDT
• Mesoscale Discussion 1132Jun 11, 10:51 PM CDT

767 
WWUS20 KWNS 112217
SEL5
SPC WW 112217
ALZ000-ARZ000-LAZ000-MSZ000-120300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 375
NWS STORM PREDICTION CENTER NORMAN OK
520 PM CDT MON JUN 11 2012

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

       PARTS OF NORTHWEST AND WEST CENTRAL ALABAMA
       EXTREME SOUTHEAST ARKANSAS
       NORTHEAST LOUISIANA
       CENTRAL MISSISSIPPI

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 520 PM UNTIL
1000 PM CDT.

HAIL TO 1.5 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 60
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES SOUTHWEST
OF GREENVILLE MISSISSIPPI TO 40 MILES NORTHEAST OF TUSCALOOSA
ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 373...WW 374...

DISCUSSION...MCS WILL CONTINUE TO MOVE SEWD FROM AR/NRN MS TOWARD NW
AL AND CENTRAL MS/NE LA.  SURFACE TEMPERATURES NEAR 90 F AND
DEWPOINTS AOA 70 F WILL MAINTAIN STRONG INSTABILITY AND CONTINUED
DOWNSTREAM PROPAGATION OF THE STORMS ON A WELL-DEVELOPED COLD POOL.
SCATTERED DAMAGING WINDS AND MARGINALLY SEVERE HAIL WILL BE THE MAIN
THREATS THROUGH LATE EVENING.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 33030.


...THOMPSON

Severe Thunderstorm Watches in Alabama, 2012Severe Thunderstorm Watches in Mississippi, 2012Severe Thunderstorm Watches in Louisiana, 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.