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The expiration time in the watch graphic is amended if the watch is
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Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 101
NWS STORM PREDICTION CENTER NORMAN OK
150 AM CDT THU APR 2 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL INTO PART OF EASTERN TEXAS
EFFECTIVE THIS THURSDAY MORNING FROM 150 AM UNTIL 800 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 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH
SOUTHEAST OF TYLER TEXAS TO 10 MILES WEST OF JUNCTION 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.
DISCUSSION...ELEVATED STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE
TO DEVELOP/INCREASE FROM W-E ACROSS CENTRAL TX OVERNIGHT AHEAD OF
STRONG MID/UPPER LEVEL LOW. AIR MASS WILL CONTINUE TO MOISTEN OVER
CENTRAL/ERN TX THROUGH THE EARLY MORNING AND ALLOW AREAS OF MODERATE
...ELEVATED INSTABILITY GIVEN VERY STEEP MID LEVEL LAPSE RATES. IN
ADDITION...DEEP LAYER SHEAR WILL REMAIN SUPPORTIVE OF ROTATION IN
THE STRONGER CORES. LARGE HAIL WILL BE PRIMARY SEVERE
THREAT...ALTHOUGH ISOLATED DAMAGING WINDS CAN ALSO BE EXPECTED.
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 400. MEAN STORM
MOTION VECTOR 25035.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 101 SEVERE TSTM TX 020650Z - 021300Z
AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE..
35SSE TYR/TYLER TX/ - 10W JCT/JUNCTION TX/
..AVIATION COORDS.. 55NM N/S /39SSW GGG - 8SW JCT/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 25035.
LAT...LON 30949516 29579994 31459994 32819516
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 101 Status Report Messages:
STATUS REPORT #4 ON WW 101
VALID 021140Z - 021300Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E AUS TO
10 NE CLL TO 15 N UTS TO 25 WSW LFK.
WW 101 WILL BE ALLOWED TO EITHER EXPIRE AT 021300Z...OR IT MAY BE
CANCELLED EARLY BY THE LOCAL WFO/S AS TSTMS MOVE EAST OF WW 101.
..PETERS..04/02/09
ATTN...WFO...FWD...EWX...HGX...SJT...
&&
STATUS REPORT FOR WS 101
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC021-149-185-287-339-373-407-477-021300-
TX
. TEXAS COUNTIES INCLUDED ARE
BASTROP FAYETTE GRIMES
LEE MONTGOMERY POLK
SAN JACINTO 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 101
VALID 021040Z - 021140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNW BAZ
TO 20 N AUS TO 35 NW CLL TO 30 SW TYR TO 30 NW TYR.
..PETERS..04/02/09
ATTN...WFO...FWD...EWX...HGX...SJT...
&&
STATUS REPORT FOR WS 101
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-021-041-051-055-149-161-185-209-213-225-287-289-313-331-
339-373-395-407-453-455-467-471-477-491-021140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BASTROP BRAZOS
BURLESON CALDWELL FAYETTE
FREESTONE GRIMES HAYS
HENDERSON HOUSTON LEE
LEON MADISON MILAM
MONTGOMERY POLK ROBERTSON
SAN JACINTO TRAVIS TRINITY
VAN ZANDT WALKER 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 101
VALID 020945Z - 021040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW HDO TO
50 E JCT TO 25 NNW AUS TO 15 S TPL TO 30 N CRS.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 362.
..PETERS..04/02/09
ATTN...WFO...FWD...EWX...HGX...SJT...
&&
STATUS REPORT FOR WS 101
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-021-027-031-041-051-053-145-161-171-185-209-213-225-257-
287-289-293-309-313-331-339-349-373-395-407-453-455-467-471-477-
491-021040-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BASTROP BELL
BLANCO BRAZOS BURLESON
BURNET FALLS FREESTONE
GILLESPIE GRIMES HAYS
HENDERSON HOUSTON KAUFMAN
LEE LEON LIMESTONE
MCLENNAN MADISON MILAM
MONTGOMERY NAVARRO POLK
ROBERTSON SAN JACINTO TRAVIS
TRINITY VAN ZANDT WALKER
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 101
VALID 020835Z - 020940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 WNW JCT
TO 55 SE BWD TO 40 WNW TPL TO 20 SE SEP.
..PETERS..04/02/09
ATTN...WFO...FWD...EWX...HGX...SJT...
&&
STATUS REPORT FOR WS 101
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-021-027-031-035-041-051-053-099-139-145-161-171-185-209-
213-217-225-257-267-281-287-289-293-299-309-313-319-331-339-349-
373-395-407-453-455-467-471-477-491-020940-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BASTROP BELL
BLANCO BOSQUE BRAZOS
BURLESON BURNET CORYELL
ELLIS FALLS FREESTONE
GILLESPIE GRIMES HAYS
HENDERSON HILL HOUSTON
KAUFMAN KIMBLE LAMPASAS
LEE LEON LIMESTONE
LLANO MCLENNAN MADISON
MASON MILAM MONTGOMERY
NAVARRO POLK ROBERTSON
SAN JACINTO TRAVIS TRINITY
VAN ZANDT WALKER 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 (<5%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Low (20%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (40%)
|
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.
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