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The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 69
NWS STORM PREDICTION CENTER NORMAN OK
940 AM CDT THU MAR 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND SOUTH CENTRAL TEXAS
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 940 AM UNTIL
400 PM CDT.
HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EITHER SIDE OF A LINE FROM 15 MILES SOUTH OF DEL
RIO TEXAS TO 60 MILES SOUTHEAST OF AUSTIN TEXAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU9).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 68...
DISCUSSION...ELEVATED STORMS HAVE DEVELOPED RAPIDLY OVER PARTS OF
SOUTH CENTRAL TEXAS WITH LEFT EXIT REGION OF STRONG SUBS TROPICAL
JET EXTENDING FROM NRN MEXICAN INTO THE NWRN GULF. AIR MASS IS VERY
UNSTABLE WITH MUCAPE TO 3000 J/KG...AND CLOUD LAYER SHEAR IS
SUFFICIENT TO SUPPORT SUPERCELL CHARACTERISTICS. VERY LARGE HAIL
WITH POSSIBLE WITH MOST INTENSE STORMS...AND DAMAGING WIND GUSTS
WILL ALSO BE POSSIBLE IF STORMS BECOME NEAR-SURFACE BASED DURING THE
AFTERNOON. ACTIVITY IS EXPECTED TO SPREAD ENEWD THROUGH THE EARLY
AFTERNOON HOURS.
AVIATION...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 550. MEAN STORM
MOTION VECTOR 25030.
...WEISS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 69 SEVERE TSTM TX 261440Z - 262100Z
AXIS..60 STATUTE MILES EITHER SIDE OF LINE..
15S DRT/DEL RIO TX/ - 60SE AUS/AUSTIN TX/
..AVIATION COORDS.. 50NM EITHER SIDE /15SSW DLF - 52SE AUS/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 25030.
LAT...LON 30010105 30549712 28819684 28290077
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 69 Status Report Messages:
STATUS REPORT #2 ON WW 69
VALID 261840Z - 261940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ENE COT
TO 15 SE SAT TO 50 N VCT.
..SPC..03/26/09
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 69
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC013-123-177-255-285-493-261940-
TX
. TEXAS COUNTIES INCLUDED ARE
ATASCOSA DEWITT GONZALES
KARNES LAVACA WILSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 69
VALID 261655Z - 261740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 70 W COT TO
25 S JCT.
..SPC..03/26/09
ATTN...WFO...EWX...
&&
STATUS REPORT FOR WS 69
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC013-019-021-029-031-053-055-091-123-127-149-163-171-177-187-
209-255-259-265-285-287-325-385-453-463-491-493-507-261740-
TX
. TEXAS COUNTIES INCLUDED ARE
ATASCOSA BANDERA BASTROP
BEXAR BLANCO BURNET
CALDWELL COMAL DEWITT
DIMMIT FAYETTE FRIO
GILLESPIE GONZALES GUADALUPE
HAYS KARNES KENDALL
KERR LAVACA LEE
MEDINA REAL TRAVIS
UVALDE WILLIAMSON WILSON
ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Low (10%)
|
Probability of 1 or more wind events > 65 knots
|
Low (<5%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (40%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
