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
SEVERE THUNDERSTORM WATCH NUMBER 284
NWS STORM PREDICTION CENTER NORMAN OK
230 PM CDT THU JUN 6 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EAST CENTRAL AND SOUTHEAST TEXAS
COASTAL WATERS
* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 230 PM UNTIL
1000 PM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
INCHES IN DIAMETER POSSIBLE
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EITHER SIDE OF A LINE FROM 45 MILES NORTHWEST OF
HUNTSVILLE TEXAS TO 20 MILES SOUTHEAST OF GALVESTON TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU4).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 283...
DISCUSSION...STORMS ARE INCREASING OVER EAST CENTRAL TX NEAR THE
INTERSECTION OF AN OUTFLOW BOUNDARY ARCING NW/SE ACROSS ERN TX AND A
WEAK COLD FRONT MOVING EWD. ACTIVITY IS IN THE SRN PORTION OF A
VORTICITY MAX MOVING EWD TOWARD NERN TX. STRONGER WNWLY WINDS ALOFT
TO THE SOUTH OF THE VORTICITY MAX ARE CONTRIBUTING TO 30-40 KT DEEP
LAYER SHEAR SUPPORTIVE OF ORGANIZED STORM STRUCTURES WITHIN AN
UNSTABLE AIR MASS /MLCAPE TO 2500 J PER KG/. ACTIVITY IS EXPECTED
TO CONTINUE DEVELOPING SEWD WITH STRONGER CELLS CAPABLE OF PRODUCING
LARGE HAIL AND DAMAGING WIND GUSTS.
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 550. MEAN STORM
MOTION VECTOR 28025.
...WEISS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW4
WW 284 SEVERE TSTM TX CW 061930Z - 070300Z
AXIS..70 STATUTE MILES EITHER SIDE OF LINE..
45NW UTS/HUNTSVILLE TX/ - 20SE GLS/GALVESTON TX/
..AVIATION COORDS.. 60NM EITHER SIDE /66W LFK - 66SE IAH/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 28025.
LAT...LON 31789504 29719356 28539544 30599695
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU4.
Watch 284 Status Report Messages:
STATUS REPORT #4 ON WW 284
VALID 070205Z - 070340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 N PSX TO
25 NW LBX TO 20 NE LBX TO 40 E GLS.
..JEWELL..06/07/13
ATTN...WFO...SHV...HGX...LCH...
&&
STATUS REPORT FOR WS 284
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC039-157-070340-
TX
. TEXAS COUNTIES INCLUDED ARE
BRAZORIA FORT BEND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 284
VALID 070030Z - 070140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SSW CLL
TO 25 WNW HOU TO 20 NE HOU TO 35 W BPT TO 5 NNW BPT TO 25 NW LCH.
..JEWELL..06/07/13
ATTN...WFO...SHV...HGX...LCH...
&&
STATUS REPORT FOR WS 284
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-071-157-167-201-245-361-473-070140-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA CHAMBERS
FORT BEND GALVESTON HARRIS
JEFFERSON ORANGE WALLER
$$
GMZ335-430-070140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
GALVESTON BAY
SABINE LAKE
$$
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.
$$
STATUS REPORT #2 ON WW 284
VALID 062330Z - 070040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW CLL TO
35 SSE CLL TO 30 S UTS TO 50 S LFK TO 45 SE LFK TO 35 WNW POE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 983
..JEWELL..06/06/13
ATTN...WFO...SHV...HGX...LCH...
&&
STATUS REPORT FOR WS 284
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC015-039-041-051-071-157-167-199-201-241-245-291-339-351-361-
457-473-477-070040-
TX
. TEXAS COUNTIES INCLUDED ARE
AUSTIN BRAZORIA BRAZOS
BURLESON CHAMBERS FORT BEND
GALVESTON HARDIN HARRIS
JASPER JEFFERSON LIBERTY
MONTGOMERY NEWTON ORANGE
TYLER WALLER WASHINGTON
$$
GMZ335-430-070040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
GALVESTON BAY
SABINE LAKE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 284
VALID 062200Z - 062340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 WNW CLL
TO 20 NE CLL TO 5 NE UTS TO 20 SW LFK TO 20 NNW LFK TO 25 S GGG.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 983
..JEWELL..06/06/13
ATTN...WFO...SHV...HGX...LCH...
&&
STATUS REPORT FOR WS 284
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC005-015-039-041-051-071-157-167-185-199-201-241-245-291-339-
347-351-361-373-407-455-457-471-473-477-062340-
TX
. TEXAS COUNTIES INCLUDED ARE
ANGELINA AUSTIN BRAZORIA
BRAZOS BURLESON CHAMBERS
FORT BEND GALVESTON GRIMES
HARDIN HARRIS JASPER
JEFFERSON LIBERTY MONTGOMERY
NACOGDOCHES NEWTON ORANGE
POLK SAN JACINTO TRINITY
TYLER WALKER WALLER
WASHINGTON
$$
GMZ335-430-062340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
GALVESTON BAY
SABINE LAKE
$$
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 (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
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
|
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.