Tornado Watch 660

Issued

Oct 12, 2012, 5:22 PM MDT (23:22 UTC)

Expired

Oct 13, 2012, 1:00 AM MDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

60 kt

The Lubbock radar (KLBB), 119 km from the middle of the area, began a volume at 23:24 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

20%

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 2039Oct 12, 4:50 PM MDT
• Mesoscale Discussion 2040Oct 12, 8:19 PM MDT
• Mesoscale Discussion 2042Oct 12, 10:34 PM MDT
• Mesoscale Discussion 2043Oct 12, 10:52 PM MDT

369 
WWUS20 KWNS 122325
SEL0  
SPC WW 122325
NMZ000-TXZ000-130700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 660
NWS STORM PREDICTION CENTER NORMAN OK
625 PM CDT FRI OCT 12 2012

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

       EASTERN NM NEW MEXICO
       MUCH OF WEST TEXAS

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 625 PM
UNTIL 200 AM CDT.

TORNADOES...HAIL TO 2 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 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES EAST SOUTHEAST OF
CARLSBAD NEW MEXICO TO 25 MILES NORTH OF AMARILLO TEXAS.  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.

DISCUSSION...ISOLATED/WIDELY SCATTERED SEVERE TSTMS ARE EXPECTED TO
INCREASE THIS EVENING ACROSS EASTERN NM AND MUCH OF WEST/NORTHWEST
TX. A SEASONALLY MOIST AND MODERATELY UNSTABLE BOUNDARY LAYER...IN
THE PRESENCE OF STRENGTHENING VERTICAL SHEAR...WILL SUPPORT
SUPERCELLS CAPABLE OF LARGE HAIL. A TORNADO THREAT WILL EXIST AS
WELL THROUGH AT LEAST EARLY/MID EVENING ALONG AND SOUTH OF A FRONTAL
BOUNDARY ACROSS NORTHEAST NM/TX PANHANDLE...ESPECIALLY GIVEN THE
LOW-LEVEL SHEAR WILL STRENGTHEN AFTER DARK.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.


...GUYER

Tornado Watches in Texas, 2012Tornado Watches in New Mexico, 2012Every tornado watch in 2012

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.