Tornado Watch 166

Issued

Apr 23, 2007, 3:44 PM CDT (20:44 UTC)

Expired

Apr 23, 2007, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Dodge City radar (KDDC), 147 km from the middle of the area, began a volume at 20:47 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

40%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

90%

One or more hailstones of 2 inches or more

70%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 543 Severe potential...tornado watch likelyApr 23, 2:02 PM CDT
• Mesoscale Discussion 548Apr 23, 6:15 PM CDT
• Mesoscale Discussion 549Apr 23, 7:05 PM CDT
• Mesoscale Discussion 552Apr 23, 8:54 PM CDT

000
WWUS20 KWNS 232051
SEL6  
SPC WW 232051
KSZ000-OKZ000-TXZ000-240300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 166
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT MON APR 23 2007

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

       SOUTHWEST KANSAS
       WESTERN OKLAHOMA AND THE OKLAHOMA PANHANDLE
       WEST TEXAS AND THE TEXAS PANHANDLE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 3 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 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHEAST OF GARDEN
CITY KANSAS TO 15 MILES WEST SOUTHWEST OF CHILDRESS TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).

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 165...

DISCUSSION...TSTMS EXPECTED TO FORM IN THE NEXT HOUR OR TWO INVOF
CAPROCK AND/OR DIFFUSE DRY LINE OVER CNTRL AND ERN PARTS OF THE TX
PANHANDLE.  ADDITIONAL STORMS MAY ALSO FORM A BIT LATER IN UPSLOPE
FLOW/WARM ADVECTION AREA EXTENDING N INTO SRN/WRN KS.  WEAK
CONVERGENCE SHOULD LIMIT STORM COVERAGE.  BUT PRESENCE OF
INCREASINGLY MOIST BOUNDARY LAYER /DEWPOINTS RISING INTO THE UPPER
50S AND LOW 60S/ BENEATH STEEP MID LEVEL LAPSE RATES...AND MODERATE
TO STRONG SPEED/ DIRECTIONAL SHEAR...SUGGEST RAPID EVOLUTION TO
SUPERCELL MODE WITH AN ATTENDANT THREAT FOR TORNADOES/LARGE HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.


...CORFIDI

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