Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 163
NWS STORM PREDICTION CENTER NORMAN OK
535 AM CDT FRI APR 4 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
WESTERN LOUISIANA
CENTRAL AND EAST TEXAS
EFFECTIVE THIS FRIDAY MORNING FROM 535 AM UNTIL 1100 AM 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 105
STATUTE MILES EAST AND WEST OF A LINE FROM 75 MILES NORTH
NORTHEAST OF LUFKIN TEXAS TO 35 MILES EAST OF NEW BRAUNFELS
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
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 160...WW 161...WW 162...
DISCUSSION...SCTD TSTMS/POSSIBLE SUPERCELLS EXPECTED TO MOVE/DEVELOP
INTO WW OVER THE NEXT FEW HOURS AS UVV INCREASES DOWNSTREAM FROM W
CNTRL TX SHORTWAVE IMPULSE. STORMS LIKELY WILL PERSIST BOTH ALONG
AND N OF COLD FRONT MOVING SSE INTO WW...AND POSSIBLY IN CONFLUENT
SSWLY LOW LEVEL FLOW JUST AHEAD OF FRONT N OF I-10. WIND PROFILES
AND RICH MOISTURE INFLOW SUGGEST THREAT FOR LARGE HAIL/HIGH WIND AND
SMALL BOWS.
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 26035.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 163 SEVERE TSTM LA TX 041035Z - 041600Z
AXIS..105 STATUTE MILES EAST AND WEST OF LINE..
75NNE LFK/LUFKIN TX/ - 35E BAZ/NEW BRAUNFELS TX/
..AVIATION COORDS.. 90NM E/W /27ESE GGG - 37SSE AUS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26035.
LAT...LON 32229245 29709569 29709919 32229605
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 163 Status Report Messages:
STATUS REPORT #4 ON WW 163
VALID 041440Z - 041540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E BAZ TO
30 ENE AUS TO TPL.
..DIAL..04/04/08
ATTN...WFO...SHV...FWD...HGX...EWX...LCH...
&&
STATUS REPORT FOR WS 163
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC069-085-041540-
LA
. LOUISIANA PARISHES INCLUDED ARE
NATCHITOCHES SABINE
$$
TXC001-005-015-021-041-051-055-073-145-149-161-185-225-241-287-
289-293-313-331-339-347-351-373-395-403-405-407-419-455-457-471-
473-477-041540-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON ANGELINA AUSTIN
BASTROP BRAZOS BURLESON
CALDWELL CHEROKEE FALLS
FAYETTE FREESTONE GRIMES
HOUSTON JASPER LEE
LEON LIMESTONE MADISON
MILAM MONTGOMERY NACOGDOCHES
NEWTON POLK ROBERTSON
SABINE SAN AUGUSTINE SAN JACINTO
SHELBY TRINITY TYLER
WALKER WALLER WASHINGTON
$$
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.
$$
STATUS REPORT #3 ON WW 163
VALID 041340Z - 041440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E BAZ TO
30 NW AUS.
..DIAL..04/04/08
ATTN...WFO...SHV...FWD...HGX...EWX...LCH...
&&
STATUS REPORT FOR WS 163
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC069-085-041440-
LA
. LOUISIANA PARISHES INCLUDED ARE
NATCHITOCHES SABINE
$$
TXC001-005-015-021-041-051-055-073-145-149-161-185-225-241-287-
289-293-313-331-339-347-351-373-395-403-405-407-419-453-455-457-
471-473-477-491-041440-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON ANGELINA AUSTIN
BASTROP BRAZOS BURLESON
CALDWELL CHEROKEE FALLS
FAYETTE FREESTONE GRIMES
HOUSTON JASPER LEE
LEON LIMESTONE MADISON
MILAM MONTGOMERY NACOGDOCHES
NEWTON POLK ROBERTSON
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 163
VALID 041245Z - 041340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GUYER..04/04/08
ATTN...WFO...SHV...FWD...HGX...EWX...LCH...
&&
STATUS REPORT FOR WS 163
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC069-085-041340-
LA
. LOUISIANA PARISHES INCLUDED ARE
NATCHITOCHES SABINE
$$
TXC001-005-015-021-041-051-055-073-145-149-161-185-209-225-241-
287-289-293-313-331-339-347-351-373-395-403-405-407-419-453-455-
457-471-473-477-491-041340-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON ANGELINA AUSTIN
BASTROP BRAZOS BURLESON
CALDWELL CHEROKEE FALLS
FAYETTE FREESTONE GRIMES
HAYS HOUSTON JASPER
LEE LEON LIMESTONE
MADISON MILAM MONTGOMERY
NACOGDOCHES NEWTON POLK
ROBERTSON SABINE SAN AUGUSTINE
SAN JACINTO SHELBY TRAVIS
TRINITY TYLER WALKER
WALLER WASHINGTON WILLIAMSON
$$
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.
$$
STATUS REPORT #1 ON WW 163
VALID 041135Z - 041240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GUYER..04/04/08
ATTN...WFO...SHV...FWD...HGX...EWX...LCH...
&&
STATUS REPORT FOR WS 163
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC069-085-041240-
LA
. LOUISIANA PARISHES INCLUDED ARE
NATCHITOCHES SABINE
$$
TXC001-005-015-021-041-051-055-073-145-149-161-185-209-225-241-
287-289-293-313-331-339-347-351-373-395-403-405-407-419-453-455-
457-471-473-477-491-041240-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON ANGELINA AUSTIN
BASTROP BRAZOS BURLESON
CALDWELL CHEROKEE FALLS
FAYETTE FREESTONE GRIMES
HAYS HOUSTON JASPER
LEE LEON LIMESTONE
MADISON MILAM MONTGOMERY
NACOGDOCHES NEWTON POLK
ROBERTSON 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
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
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.
weather.gov 
