Tornado Watch 250

Issued

May 6, 2007, 9:07 PM CDT (02:07 UTC)

Expired

May 7, 2007, 3:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Tulsa radar (KINX), 113 km from the middle of the area, began a volume at 02:10 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

10%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

5%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

20%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 729May 6, 5:38 PM CDT
• Mesoscale Discussion 733May 6, 8:26 PM CDT
• Mesoscale Discussion 734May 6, 8:55 PM CDT
• Mesoscale Discussion 738May 6, 11:34 PM CDT
• Mesoscale Discussion 739May 7, 1:59 AM CDT

000
WWUS20 KWNS 070209
SEL0  
SPC WW 070209
KSZ000-MOZ000-OKZ000-070800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 250
NWS STORM PREDICTION CENTER NORMAN OK
910 PM CDT SUN MAY 6 2007

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

       SOUTHERN AND EASTERN KANSAS
       WESTERN MISSOURI
       CENTRAL AND EASTERN OKLAHOMA

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 910 PM UNTIL
300 AM CDT.

TORNADOES...HAIL TO 1.5 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 70 MILES EAST NORTHEAST OF
EMPORIA KANSAS TO 30 MILES WEST OF MCALESTER OKLAHOMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).

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 246...WW 247...WW
248...WW 249...

DISCUSSION...SCTD SHOWERS/STORMS HAVE DEVELOPED IN THE LAST HOUR
OVER CNTRL/ERN OK...POSSIBLY IN RESPONSE TO ASCENT PHASE OF A
GRAVITY WAVE EMANATING FROM WRN OK MCS.  GIVEN DISCRETE NATURE OF
UPDRAFTS...VERY MOIST LOW LEVEL ENVIRONMENT AND LENGTHENING OF LOW
LEVEL HODOGRAPHS IN RESPONSE TO NOCTURNAL STRENGTHENING OF
LLJ...POTENTIAL WILL EXIST FOR LOW LEVEL STORM ROTATION/POSSIBLE
TORNADOES.

AVIATION...TORNADOES AND 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
500. MEAN STORM MOTION VECTOR 21030.


...CORFIDI

Tornado Watches in Oklahoma, 2007Tornado Watches in Kansas, 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.