Tornado Watch 177

Issued

Apr 24, 2007, 3:01 PM CDT (20:01 UTC)

Expired

Apr 24, 2007, 10:03 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

50 kt

The Tulsa radar (KINX), 68 km from the middle of the area, began a volume at 20:02 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

50%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 560Apr 24, 12:40 PM CDT
• Mesoscale Discussion 563Apr 24, 2:03 PM CDT
• Mesoscale Discussion 565Apr 24, 3:10 PM CDT
• Mesoscale Discussion 570Apr 24, 7:33 PM CDT
• Mesoscale Discussion 571Apr 24, 7:53 PM CDT

000
WWUS20 KWNS 242002
SEL7  
SPC WW 242002
ARZ000-MOZ000-OKZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 177
NWS STORM PREDICTION CENTER NORMAN OK
300 PM CDT TUE APR 24 2007

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

       WESTERN ARKANSAS
       SOUTHWEST MISSOURI
       EASTERN OKLAHOMA

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF GROVE
OKLAHOMA TO 20 MILES WEST SOUTHWEST OF DE QUEEN ARKANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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 172...WW 173...WW
174...WW 175...WW 176...

DISCUSSION...SUSTAINED STORMS/POSSIBLE SUPERCELLS EXPECTED TO SPREAD
NEWD INTO WW THROUGH THIS EVENING...WHERE INCREASINGLY SHEARED
ENVIRONMENT AND RICH LOW LEVEL MOISTURE RETURN SUGGEST THREAT FOR
HAIL AND POSSIBLE TORNADOES...DESPITE COMPLEX AND LIKELY
SLIGHTLY-ELEVATED STORM MODES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23040.


...CORFIDI

Tornado Watches in Arkansas, 2007Tornado Watches in Oklahoma, 2007Tornado Watches in Missouri, 2007Every tornado watch in 2007

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.