Tornado Watch 87

Issued

Mar 28, 2007, 11:22 PM CDT (04:22 UTC)

Expired

Mar 29, 2007, 5:04 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Amarillo radar (KAMA), 110 km from the middle of the area, began a volume at 04:23 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

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 365Mar 28, 8:52 PM CDT
• Mesoscale Discussion 367Mar 28, 10:58 PM CDT
• Mesoscale Discussion 369Mar 29, 2:03 AM CDT

000
WWUS20 KWNS 290420
SEL7  
SPC WW 290420
OKZ000-TXZ000-291100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 87
NWS STORM PREDICTION CENTER NORMAN OK
1120 PM CDT WED MAR 28 2007

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

       PARTS OF WESTERN OKLAHOMA
       MUCH OF EASTERN TEXAS PANHANDLE

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1120 PM
UNTIL 600 AM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF GAGE
OKLAHOMA TO 70 MILES SOUTHEAST OF LUBBOCK TEXAS.  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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 82...TORNADO WATCH NUMBER 84. WATCH NUMBER 82 84
WILL NOT BE IN EFFECT AFTER 1120 PM CDT. CONTINUE...WW 83...WW
85...WW 86...

DISCUSSION...SEVERE THUNDERSTORMS HAVE EVOLVED INTO A MORE LINEAR
MODE.  HOWEVER WITH STRONG SHEAR AND INSTABILITY...POTENTIAL
CONTINUES FOR ISOLATED TORNADOES ALONG WITH THE VERY LARGE HAIL AND
DAMAGING WINDS WITH ANY SUPERCELL EMBEDDED OR AHEAD OF LINE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 24035.


...HALES

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.