Tornado Watch 322

Issued

Jun 1, 2007, 2:03 PM CDT (19:03 UTC)

Expired

Jun 1, 2007, 9:00 PM CDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

3 in

Strongest gust expected

60 kt

The Lubbock radar (KLBB), 87 km from the middle of the area, began a volume at 19:05 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

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

80%

One or more hailstones of 2 inches or more

60%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 950Jun 1, 1:45 PM CDT
• Mesoscale Discussion 954Jun 1, 5:30 PM CDT
• Mesoscale Discussion 955Jun 1, 7:27 PM CDT
• Mesoscale Discussion 956Jun 1, 7:30 PM CDT

000
WWUS20 KWNS 011904
SEL2  
SPC WW 011904
OKZ000-TXZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 322
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT FRI JUN 1 2007

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

       SOUTHWEST OKLAHOMA
       NORTHWEST TEXAS AND THE TEXAS SOUTH PLAINS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 205 PM UNTIL 900
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 45 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 75 MILES WEST OF PLAINVIEW
TEXAS TO 5 MILES NORTHEAST OF WICHITA FALLS TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU2).

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 321...

DISCUSSION...SURFACE-BASED CONVECTION WILL INCREASE IN
COVERAGE/INTENSITY ALONG A N E-W OUTFLOW BOUNDARY FROM THE SRN TX
PANHANDLE INTO SW OK.  MID LEVEL FLOW IS A LITTLE WEAK FOR
LONG-LIVED TORNADIC SUPERCELLS...BUT ENHANCED LOW-LEVEL
SHEAR/MOISTURE ALONG THE BOUNDARY MAY SUPPORT A COUPLE OF TORNADOES
WITH HEAVY PRECIPITATION TYPE SUPERCELLS THIS AFTERNOON. 
OTHERWISE...VERY STEEP MID LEVEL LAPSE RATES AND MLCAPE NEAR 3000
J/KG WILL SUPPORT A THREAT FOR VERY LARGE HAIL WITH THE MORE INTENSE
STORMS...AND DAMAGING WINDS AS STORM MERGERS RESULT IN SOME UPSCALE
GROWTH INTO LARGER CONVECTIVE CLUSTERS LATER THIS AFTERNOON/EVENING.

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
600. MEAN STORM MOTION VECTOR 28015.


...THOMPSON

Tornado Watches in Texas, 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.