Severe Thunderstorm Watch 751

Issued

Aug 8, 2011, 7:53 PM CDT (00:53 UTC)

Expired

Aug 9, 2011, 3:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

70 kt

The Tulsa radar (KINX), 8 km from the middle of the area, began a volume at 00:53 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

10%

One or more EF2 to EF5 tornadoes

2%

Ten or more severe wind reports

80%

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

95%

• Mesoscale Discussion 1905Aug 8, 5:30 PM CDT
• Mesoscale Discussion 1908Aug 8, 7:34 PM CDT
• Mesoscale Discussion 1909Aug 8, 11:00 PM CDT
• Mesoscale Discussion 1911Aug 9, 2:21 AM CDT

976 
WWUS20 KWNS 090059
SEL1
SPC WW 090059
ARZ000-KSZ000-MOZ000-OKZ000-090800-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 751
NWS STORM PREDICTION CENTER NORMAN OK
755 PM CDT MON AUG 8 2011

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

       WESTERN AND NORTHERN ARKANSAS
       FAR SOUTHEAST KANSAS
       FAR SOUTHWEST MISSOURI
       CENTRAL AND EASTERN OKLAHOMA

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 755 PM UNTIL
300 AM CDT.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 125
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF
SPRINGFIELD MISSOURI TO 60 MILES SOUTHEAST OF CHICKASHA OKLAHOMA.
 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 746...WW 747...WW
748...WW 750...

DISCUSSION...TSTMS EXPECTED TO CONTINUE FORMING ALONG SLOWLY
PROGRESSIVE SW-NE COLD FRONT THROUGH SW/CNTRL/N CNTRL OK THROUGH
LATE THIS EVE.  AS SWLY LLJ NOCTURNALLY STRENGTHENS...OTHER STORMS
EXPECTED TO INCREASE/DEVELOP ALONG AND N OF STALLED WNW-ESE OUTFLOW
BOUNDARY IN NE OK/WRN AR...AND ALONG DEEPER OUTFLOW BOUNDARY
EXTENDING WNW/ESE ACROSS SE KS AND SW MO.  DEEP WNWLY SHEAR...AND
ASCENT WITH SRN FRINGE OF UPR IMPULSE CROSSING THE CNTRL
PLNS...APPEAR AMPLE FOR AMALGAMATION OF STORMS INTO CLUSTERS WITH
EMBEDDED BOWING SEGMENTS.  THESE MAY YIELD A FEW SWATHS OF DMGG WIND
IN ADDITION TO MARGINALLY SVR HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 32030.


...CORFIDI

Severe Thunderstorm Watches in Oklahoma, 2011Severe Thunderstorm Watches in Arkansas, 2011Severe Thunderstorm Watches in Missouri, 2011Every severe thunderstorm 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.