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.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 160
NWS STORM PREDICTION CENTER NORMAN OK
1025 AM CDT FRI APR 17 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST TEXAS
COASTAL WATERS
EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 1025 AM UNTIL
500 PM 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 75 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTH SOUTHEAST OF
PORT ARTHUR TEXAS TO 50 MILES SOUTH SOUTHWEST OF COLLEGE STATION
TEXAS. 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 159...
DISCUSSION...MCS CURRENTLY OVER SCNTRL TEXAS WILL CONTINUE EWD ALONG
A GRADIENT OF MODERATE INSTABILITY. A 45 TO 55 KT LOW-LEVEL JET WILL
CREATE A LOW-LEVEL SHEAR ENVIRONMENT FAVORABLE FOR A FEW TORNADOES.
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 24020.
...BROYLES/HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 160 TORNADO TX CW 171525Z - 172200Z
AXIS..75 STATUTE MILES NORTH AND SOUTH OF LINE..
55SSE BPT/PORT ARTHUR TX/ - 50SSW CLL/COLLEGE STATION TX/
..AVIATION COORDS.. 65NM N/S /63SSW LCH - 57ESE AUS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24020.
LAT...LON 28129366 28829669 31009669 30299366
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 160 Status Report Messages:
STATUS REPORT #5 ON WW 160
VALID 172030Z - 172140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 SSW CLL
TO 10 SSE UTS TO 5 ENE UTS.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 501
..GARNER..04/17/09
ATTN...WFO...HGX...LCH...
&&
STATUS REPORT FOR WT 160
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-071-089-157-167-199-201-239-245-291-321-339-361-407-
473-481-172140-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA CHAMBERS
COLORADO FORT BEND GALVESTON
HARDIN HARRIS JACKSON
JEFFERSON LIBERTY MATAGORDA
MONTGOMERY ORANGE SAN JACINTO
WALLER WHARTON
$$
GMZ330-335-350-355-430-450-172140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MATAGORDA BAY
GALVESTON BAY
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT 20
NM
COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM
SABINE LAKE
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM
$$
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.
$$
STATUS REPORT #4 ON WW 160
VALID 171925Z - 172040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 SSW CLL
TO 30 ESE CLL TO 20 WNW UTS.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 501
..GARNER..04/17/09
ATTN...WFO...HGX...LCH...
&&
STATUS REPORT FOR WT 160
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-071-089-157-167-199-201-239-245-291-321-339-361-407-
471-473-481-172040-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA CHAMBERS
COLORADO FORT BEND GALVESTON
HARDIN HARRIS JACKSON
JEFFERSON LIBERTY MATAGORDA
MONTGOMERY ORANGE SAN JACINTO
WALKER WALLER WHARTON
$$
GMZ330-335-350-355-430-450-172040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MATAGORDA BAY
GALVESTON BAY
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT 20
NM
COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM
SABINE LAKE
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 160
VALID 171830Z - 171940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SSW CLL
TO 15 SSE CLL TO 25 NNE CLL.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 498
..GARNER..04/17/09
ATTN...WFO...HGX...LCH...
&&
STATUS REPORT FOR WT 160
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-071-089-157-167-185-199-201-239-245-291-313-321-339-
361-407-471-473-481-171940-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA CHAMBERS
COLORADO FORT BEND GALVESTON
GRIMES HARDIN HARRIS
JACKSON JEFFERSON LIBERTY
MADISON MATAGORDA MONTGOMERY
ORANGE SAN JACINTO WALKER
WALLER WHARTON
$$
GMZ330-335-350-355-430-450-171940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MATAGORDA BAY
GALVESTON BAY
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT 20
NM
COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM
SABINE LAKE
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM
$$
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.
$$
STATUS REPORT #2 ON WW 160
VALID 171745Z - 171840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SSW CLL
TO 15 SSW CLL TO 25 N CLL.
..EDWARDS..04/17/09
ATTN...WFO...HGX...LCH...
&&
STATUS REPORT FOR WT 160
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-041-051-071-089-157-167-185-199-201-239-245-291-313-
321-339-361-407-471-473-477-481-171840-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA BRAZOS
BURLESON CHAMBERS COLORADO
FORT BEND GALVESTON GRIMES
HARDIN HARRIS JACKSON
JEFFERSON LIBERTY MADISON
MATAGORDA MONTGOMERY ORANGE
SAN JACINTO WALKER WALLER
WASHINGTON WHARTON
$$
GMZ330-335-350-355-430-450-171840-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MATAGORDA BAY
GALVESTON BAY
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT 20
NM
COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM
SABINE LAKE
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 160
VALID 171640Z - 171740Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EDWARDS..04/17/09
ATTN...WFO...HGX...LCH...
&&
STATUS REPORT FOR WT 160
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-041-051-071-089-157-167-185-199-201-239-245-291-313-
321-339-361-407-471-473-477-481-171740-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA BRAZOS
BURLESON CHAMBERS COLORADO
FORT BEND GALVESTON GRIMES
HARDIN HARRIS JACKSON
JEFFERSON LIBERTY MADISON
MATAGORDA MONTGOMERY ORANGE
SAN JACINTO WALKER WALLER
WASHINGTON WHARTON
$$
GMZ330-335-350-355-430-450-171740-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MATAGORDA BAY
GALVESTON BAY
COASTAL WATERS FROM FREEPORT TO MATAGORDA SHIP CHANNEL TX OUT 20
NM
COASTAL WATERS FROM HIGH ISLAND TO FREEPORT TX OUT 20 NM
SABINE LAKE
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM
$$
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 (30%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (10%)
|
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
|
Mod (30%)
|
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 
