Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL4
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 64
NWS STORM PREDICTION CENTER NORMAN OK
540 PM CDT WED MAR 25 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN AND CENTRAL LOUISIANA
EASTERN TEXAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND THURSDAY MORNING FROM 540
PM UNTIL 100 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 70 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST OF LUFKIN
TEXAS TO 60 MILES NORTH NORTHEAST OF ALEXANDRIA LOUISIANA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU4).
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 62...WW 63...
DISCUSSION...THREAT FOR SEVERE THUNDERSTORMS...INCLUDING LONG-LIVED
SUPERCELLS/BOW ECHOES...WILL INCREASE ACROSS WW THROUGH THE EVENING.
SURFACE FRONT WILL LIKELY SHIFT SLOWLY NWD INTO NRN LA AS STRONG
SSWLY LLJ DEVELOPS AND SHIFTS TOWARDS THE LOWER MS RIVER VALLEY...
ALLOWING SUFFICIENT SURFACE-BASED INSTABILITY TO OVERSPREAD MUCH OF
THE WATCH. VERY STRONG LOW LEVEL SHEAR WILL REMAIN SUPPORTIVE OF
TORNADOES...ALTHOUGH DAMAGING WINDS AND LARGE HAIL ARE ALSO LIKELY
WITH THE STRONGER CORES.
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 27035.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 64 TORNADO LA TX 252240Z - 260600Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
35W LFK/LUFKIN TX/ - 60NNE ESF/ALEXANDRIA LA/
..AVIATION COORDS.. 60NM N/S /32W LFK - 20SSE MLU/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
LAT...LON 32249533 33209191 31199191 30219533
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 64 Status Report Messages:
STATUS REPORT #4 ON WW 64
VALID 260335Z - 260440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 SW POE TO
20 N ESF TO 10 SE MLU.
..BROYLES..03/26/09
ATTN...WFO...SHV...LCH...
&&
STATUS REPORT FOR WT 64
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC021-059-079-260440-
LA
. LOUISIANA PARISHES INCLUDED ARE
CALDWELL LA SALLE RAPIDES
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 64
VALID 260230Z - 260340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 S UTS TO
45 SE LFK TO 5 SSW IER TO 40 S LLQ.
..HURLBUT..03/26/09
ATTN...WFO...SHV...LCH...
&&
STATUS REPORT FOR WT 64
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC021-043-059-069-073-079-115-127-260340-
LA
. LOUISIANA PARISHES INCLUDED ARE
CALDWELL GRANT LA SALLE
NATCHITOCHES OUACHITA RAPIDES
VERNON WINN
$$
TXC241-351-457-260340-
TX
. TEXAS COUNTIES INCLUDED ARE
JASPER NEWTON TYLER
$$
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.
$$
STATUS REPORT #2 ON WW 64
VALID 260135Z - 260240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 N UTS TO
40 ENE LFK TO 15 ESE ELD.
..HURLBUT..03/26/09
ATTN...WFO...SHV...LCH...
&&
STATUS REPORT FOR WT 64
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC013-021-043-049-059-061-069-073-079-081-085-111-115-127-
260240-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE CALDWELL GRANT
JACKSON LA SALLE LINCOLN
NATCHITOCHES OUACHITA RAPIDES
RED RIVER SABINE UNION
VERNON WINN
$$
TXC005-241-351-403-405-457-260240-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA JASPER NEWTON
SABINE SAN AUGUSTINE TYLER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 64
VALID 260040Z - 260140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 N UTS TO
35 N LFK TO 25 NNE SHV.
..BROYLES..03/26/09
ATTN...WFO...SHV...LCH...
&&
STATUS REPORT FOR WT 64
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC013-015-017-021-027-031-043-049-059-061-069-073-079-081-085-
111-115-119-127-260140-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE BOSSIER CADDO
CALDWELL CLAIBORNE DE SOTO
GRANT JACKSON LA SALLE
LINCOLN NATCHITOCHES OUACHITA
RAPIDES RED RIVER SABINE
UNION VERNON WEBSTER
WINN
$$
TXC005-241-347-351-403-405-419-457-260140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA JASPER NACOGDOCHES
NEWTON SABINE SAN AUGUSTINE
SHELBY TYLER
$$
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 (40%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (40%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
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.