Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 220
NWS STORM PREDICTION CENTER NORMAN OK
455 PM CDT TUE APR 26 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND WESTERN LOUISIANA
SOUTH-CENTRAL AND SOUTHEAST TEXAS
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 455 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 4 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 10 MILES SOUTHWEST OF AUSTIN
TEXAS TO 30 MILES NORTHEAST OF ALEXANDRIA LOUISIANA. 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 213...WW 214...WW
215...WW 216...WW 217...WW 218...WW 219...
DISCUSSION...DEEP-LAYER WIND PROFILES AND FAVORABLY LARGE BUOYANCY
SUPPORT POTENTIAL FOR SVR TSTMS -- INCLUDING SUPERCELLS ALREADY
OCCURRING OVER SRN PORTIONS WW 215 BETWEEN ACT-LFK AND POTENTIAL
DEVELOPMENT FARTHER W ALONG DRYLINE -- TO AFFECT WW AREA LATE
AFTERNOON THROUGH EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
650. MEAN STORM MOTION VECTOR 26030.
...EDWARDS/HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 220 TORNADO LA TX 262155Z - 270300Z
AXIS..50 STATUTE MILES NORTH AND SOUTH OF LINE..
10SW AUS/AUSTIN TX/ - 30NE ESF/ALEXANDRIA LA/
..AVIATION COORDS.. 45NM N/S /9SW AUS - 39NE AEX/
HAIL SURFACE AND ALOFT..4 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 650. MEAN STORM MOTION VECTOR 26030.
LAT...LON 30929781 32439194 30979194 29469781
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 220 Status Report Messages:
STATUS REPORT #4 ON WW 220
VALID 270145Z - 270240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 602
..DEAN..04/27/11
ATTN...WFO...LCH...SHV...HGX...EWX...
&&
STATUS REPORT FOR WT 220
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC011-013-021-031-043-049-059-061-069-073-079-081-085-115-127-
270240-
LA
. LOUISIANA PARISHES INCLUDED ARE
BEAUREGARD BIENVILLE CALDWELL
DE SOTO GRANT JACKSON
LA SALLE LINCOLN NATCHITOCHES
OUACHITA RAPIDES RED RIVER
SABINE VERNON WINN
$$
TXC005-015-021-041-051-149-185-199-225-241-287-291-313-339-347-
351-373-403-405-407-419-455-457-471-473-477-270240-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA AUSTIN BASTROP
BRAZOS BURLESON FAYETTE
GRIMES HARDIN HOUSTON
JASPER LEE LIBERTY
MADISON MONTGOMERY NACOGDOCHES
NEWTON POLK SABINE
SAN AUGUSTINE SAN JACINTO SHELBY
TRINITY TYLER WALKER
WALLER WASHINGTON
$$
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.
$$
STATUS REPORT #3 ON WW 220
VALID 270040Z - 270140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 602
..DEAN..04/27/11
ATTN...WFO...LCH...SHV...HGX...EWX...
&&
STATUS REPORT FOR WT 220
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC011-013-021-031-043-049-059-061-069-073-079-081-085-115-127-
270140-
LA
. LOUISIANA PARISHES INCLUDED ARE
BEAUREGARD BIENVILLE CALDWELL
DE SOTO GRANT JACKSON
LA SALLE LINCOLN NATCHITOCHES
OUACHITA RAPIDES RED RIVER
SABINE VERNON WINN
$$
TXC005-015-021-041-051-149-185-199-209-225-241-287-291-313-339-
347-351-373-403-405-407-419-453-455-457-471-473-477-491-
270140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA AUSTIN BASTROP
BRAZOS BURLESON FAYETTE
GRIMES HARDIN HAYS
HOUSTON JASPER LEE
LIBERTY MADISON MONTGOMERY
NACOGDOCHES NEWTON POLK
SABINE SAN AUGUSTINE SAN JACINTO
SHELBY TRAVIS TRINITY
TYLER WALKER WALLER
WASHINGTON WILLIAMSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 220
VALID 262350Z - 270040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 602
..DEAN..04/26/11
ATTN...WFO...LCH...SHV...HGX...EWX...
&&
STATUS REPORT FOR WT 220
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC011-013-021-031-043-049-059-061-069-073-079-081-085-115-127-
270040-
LA
. LOUISIANA PARISHES INCLUDED ARE
BEAUREGARD BIENVILLE CALDWELL
DE SOTO GRANT JACKSON
LA SALLE LINCOLN NATCHITOCHES
OUACHITA RAPIDES RED RIVER
SABINE VERNON WINN
$$
TXC005-015-021-041-051-149-185-199-209-225-241-287-291-313-339-
347-351-373-403-405-407-419-453-455-457-471-473-477-491-
270040-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA AUSTIN BASTROP
BRAZOS BURLESON FAYETTE
GRIMES HARDIN HAYS
HOUSTON JASPER LEE
LIBERTY MADISON MONTGOMERY
NACOGDOCHES NEWTON POLK
SABINE SAN AUGUSTINE SAN JACINTO
SHELBY TRAVIS TRINITY
TYLER WALKER WALLER
WASHINGTON WILLIAMSON
$$
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.
$$
STATUS REPORT #1 ON WW 220
VALID 262240Z - 262340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EDWARDS..04/26/11
ATTN...WFO...LCH...SHV...HGX...EWX...
&&
STATUS REPORT FOR WT 220
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC011-013-021-031-043-049-059-061-069-073-079-081-085-115-127-
262340-
LA
. LOUISIANA PARISHES INCLUDED ARE
BEAUREGARD BIENVILLE CALDWELL
DE SOTO GRANT JACKSON
LA SALLE LINCOLN NATCHITOCHES
OUACHITA RAPIDES RED RIVER
SABINE VERNON WINN
$$
TXC005-015-021-041-051-149-185-199-209-225-241-287-291-313-339-
347-351-373-403-405-407-419-453-455-457-471-473-477-491-
262340-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA AUSTIN BASTROP
BRAZOS BURLESON FAYETTE
GRIMES HARDIN HAYS
HOUSTON JASPER LEE
LIBERTY MADISON MONTGOMERY
NACOGDOCHES NEWTON POLK
SABINE SAN AUGUSTINE SAN JACINTO
SHELBY TRAVIS TRINITY
TYLER WALKER WALLER
WASHINGTON WILLIAMSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (50%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (30%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
High (70%)
|
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.