Tornado Watch 70

Issued

Mar 23, 2007, 2:19 PM MDT (20:19 UTC)

Expired

Mar 23, 2007, 10:00 PM MDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Midland/Odessa radar (KMAF), 147 km from the middle of the area, began a volume at 20:20 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

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

60%

One or more hailstones of 2 inches or more

40%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 325Mar 23, 12:20 PM MDT
• Mesoscale Discussion 330Mar 23, 5:34 PM MDT

000
WWUS20 KWNS 232022
SEL0  
SPC WW 232022
NMZ000-TXZ000-240400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 70
NWS STORM PREDICTION CENTER NORMAN OK
320 PM CDT FRI MAR 23 2007

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

       EXTREME EASTERN NEW MEXICO
       FAR WEST AND SOUTHWEST TEXAS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 320 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2.5 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 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 5 MILES SOUTH SOUTHEAST OF
MARFA TEXAS TO 40 MILES NORTHEAST OF CANNON AFB NEW MEXICO.  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 69...

DISCUSSION...STORMS ARE INCREASING OVER ERN NM WITHIN WW 63 AND OVER
SERN NM/SWRN TX IN ADVANCE OF VIGOROUS UPPER SYSTEM BEGINNING TO
TURN NEWD TOWARD SWRN NM.  LOW LEVEL SELY WINDS HAVE MAINTAINED
MOISTURE FIELD INTO ERN NM/WRN TX WHERE SURFACE DEW POINTS ARE IN
THE 50S TO LOWER 60S...AND STEEP LAPSE RATES HAVE CONTRIBUTED TO
MLCAPE OF 1000-2000 J/KG. STRONG SSWLY FLOW ALOFT IS RESULTING IN
SUFFICIENT DEEP LAYER SHEAR TO SUPPORT SUPERCELL STORMS...AND
DEVELOPING LLJ BY LATE THIS AFTERNOON/EVENING OVER FAR WRN TX WILL
ENHANCE POTENTIAL FOR A FEW TORNADOES TO DEVELOP. ACTIVITY WILL
GRADUALLY DEVELOP EWD/NEWD WITH TIME AS THE UPPER LOW ACCELERATES
NEWD THIS EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 21040.


...WEISS

Tornado Watches in Texas, 2007Tornado Watches in New Mexico, 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.