Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 241
NWS STORM PREDICTION CENTER NORMAN OK
435 AM CDT SUN APR 27 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND SOUTHERN TEXAS
EFFECTIVE THIS SUNDAY MORNING FROM 435 AM UNTIL NOON CDT.
HAIL TO 2 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 75
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 80 MILES NORTH
NORTHWEST OF DEL RIO TEXAS TO 65 MILES NORTH OF PALACIOS TEXAS.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).
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...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 240. WATCH NUMBER 240 WILL NOT
BE IN EFFECT AFTER 435 AM CDT.
DISCUSSION...SCTD SMALL CLUSTERS OF STRONG TO SVR STORMS...INCLUDING
POSSIBLE SUPERCELLS...EXPECTED TO CONTINUE FORMING IN ZONE OF
LOW-LVL WAA AND MOISTENING OVER THE TX HILL COUNTRY. THE
STRONGEST/MOST SUSTAINED STORMS SHOULD MOVE/DEVELOP SE ALONG
MOISTURE GRADIENT NEAR SAT TO THE MIDDLE TX GULF CST NEAR VCT.
OTHER STORMS MAY FORM ATOP SHALLOW COLD FRONT SURGING S TOWARD THE
BIG BEND REGION...AND POSSIBLY E ALONG WEAK FRONT FROM W OF TPL TO
NEAR CLL. BOWING STRUCTURES MAY YIELD HIGH WIND AND POSSIBLY A
BRIEF TORNADO IN ADDITION TO SVR HAIL.
AVIATION...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 30030.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 241 SEVERE TSTM TX 270935Z - 271700Z
AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
80NNW DRT/DEL RIO TX/ - 65N PSX/PALACIOS TX/
..AVIATION COORDS.. 65NM N/S /73NNW DLF - 50WSW IAH/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 30030.
REPLACES WW 240..TX
LAT...LON 31520143 30769625 28599625 29350143
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 241 Status Report Messages:
STATUS REPORT #5 ON WW 241
VALID 271530Z - 271640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW NIR
TO 35 SE AUS TO 45 S CLL.
..SPC..04/27/08
ATTN...WFO...EWX...HGX...FWD...SJT...CRP...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-089-123-149-175-177-239-285-321-469-481-271640-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN COLORADO DEWITT
FAYETTE GOLIAD GONZALES
JACKSON LAVACA MATAGORDA
VICTORIA WHARTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 241
VALID 271400Z - 271540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NW NIR TO
25 NNW BAZ TO 30 ENE AUS TO 15 NNE CLL.
..SPC..04/27/08
ATTN...WFO...EWX...HGX...FWD...SJT...CRP...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-021-041-051-055-089-123-149-175-177-187-209-239-255-285-
287-321-469-477-481-493-271540-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BASTROP BRAZOS
BURLESON CALDWELL COLORADO
DEWITT FAYETTE GOLIAD
GONZALES GUADALUPE HAYS
JACKSON KARNES LAVACA
LEE MATAGORDA VICTORIA
WASHINGTON WHARTON 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 #3 ON WW 241
VALID 271245Z - 271340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 SSE BWD
TO 25 S TPL TO 25 SE TPL.
..PETERS..04/27/08
ATTN...WFO...EWX...HGX...FWD...SJT...CRP...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC013-015-019-021-029-031-041-051-053-055-089-091-095-105-123-
127-137-149-163-171-175-177-187-209-235-239-255-259-265-267-271-
285-287-299-307-319-321-323-325-327-331-385-395-411-413-435-451-
453-463-465-469-477-481-491-493-507-271340-
TX
. TEXAS COUNTIES INCLUDED ARE
ATASCOSA AUSTIN BANDERA
BASTROP BEXAR BLANCO
BRAZOS BURLESON BURNET
CALDWELL COLORADO COMAL
CONCHO CROCKETT DEWITT
DIMMIT EDWARDS FAYETTE
FRIO GILLESPIE GOLIAD
GONZALES GUADALUPE HAYS
IRION JACKSON KARNES
KENDALL KERR KIMBLE
KINNEY LAVACA LEE
LLANO MCCULLOCH MASON
MATAGORDA MAVERICK MEDINA
MENARD MILAM REAL
ROBERTSON SAN SABA SCHLEICHER
SUTTON TOM GREEN TRAVIS
UVALDE VAL VERDE VICTORIA
WASHINGTON WHARTON WILLIAMSON
WILSON ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 241
VALID 271140Z - 271240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..PETERS..04/27/08
ATTN...WFO...EWX...HGX...FWD...SJT...CRP...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC013-015-019-021-027-029-031-041-051-053-055-089-091-095-099-
105-123-127-137-145-149-163-171-175-177-187-209-235-239-255-259-
265-267-271-281-285-287-299-307-319-321-323-325-327-331-385-395-
411-413-435-451-453-463-465-469-477-481-491-493-507-271240-
TX
. TEXAS COUNTIES INCLUDED ARE
ATASCOSA AUSTIN BANDERA
BASTROP BELL BEXAR
BLANCO BRAZOS BURLESON
BURNET CALDWELL COLORADO
COMAL CONCHO CORYELL
CROCKETT DEWITT DIMMIT
EDWARDS FALLS FAYETTE
FRIO GILLESPIE GOLIAD
GONZALES GUADALUPE HAYS
IRION JACKSON KARNES
KENDALL KERR KIMBLE
KINNEY LAMPASAS LAVACA
LEE LLANO MCCULLOCH
MASON MATAGORDA MAVERICK
MEDINA MENARD MILAM
REAL ROBERTSON SAN SABA
SCHLEICHER SUTTON TOM GREEN
TRAVIS UVALDE VAL VERDE
VICTORIA WASHINGTON WHARTON
WILLIAMSON WILSON ZAVALA
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 241
VALID 271040Z - 271140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..PETERS..04/27/08
ATTN...WFO...EWX...HGX...FWD...SJT...CRP...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC013-015-019-021-027-029-031-041-051-053-055-089-091-095-099-
105-123-127-137-145-149-163-171-175-177-187-209-235-239-255-259-
265-267-271-281-285-287-299-307-319-321-323-325-327-331-385-395-
411-413-435-451-453-463-465-469-477-481-491-493-507-271140-
TX
. TEXAS COUNTIES INCLUDED ARE
ATASCOSA AUSTIN BANDERA
BASTROP BELL BEXAR
BLANCO BRAZOS BURLESON
BURNET CALDWELL COLORADO
COMAL CONCHO CORYELL
CROCKETT DEWITT DIMMIT
EDWARDS FALLS FAYETTE
FRIO GILLESPIE GOLIAD
GONZALES GUADALUPE HAYS
IRION JACKSON KARNES
KENDALL KERR KIMBLE
KINNEY LAMPASAS LAVACA
LEE LLANO MCCULLOCH
MASON MATAGORDA MAVERICK
MEDINA MENARD MILAM
REAL ROBERTSON SAN SABA
SCHLEICHER SUTTON TOM GREEN
TRAVIS UVALDE VAL VERDE
VICTORIA WASHINGTON WHARTON
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 (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
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.