Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 426
NWS STORM PREDICTION CENTER NORMAN OK
115 AM CDT WED JUN 20 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN AND CENTRAL TEXAS
EFFECTIVE THIS WEDNESDAY MORNING FROM 115 AM UNTIL 900 AM CDT.
HAIL TO 1.5 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 55 MILES NORTHWEST
OF BIG SPRING TEXAS TO 20 MILES EAST OF DALLAS TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).
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 424...WW 425...
DISCUSSION...STRONG FORWARD-PROPAGATING MCS EXPECTED TO CONTINUE
GENERALLY SSE...FOSTERED PRIMARILY BY PROPAGATION OF NEW CELLS INTO
30+ KT SSELY LLJ. DEGREE OF SFC-BASED INSTABILITY /STEEP LOW TO MID
LEVEL LAPSE RATES/ AND QUALITY OF MOISTURE INFLOW /DEWPOINTS IN THE
70S/ SUGGEST CONTINUED POTENTIAL FOR DAMAGING WIND GUSTS DRIVEN BY
MAINLY BY PRECIPITATION LOADING...ALONG WITH OCCASIONAL SVR HAIL
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 35035.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 426 SEVERE TSTM TX 200615Z - 201400Z
AXIS..65 STATUTE MILES NORTH AND SOUTH OF LINE..
55NW BGS/BIG SPRING TX/ - 20E DAL/DALLAS TX/
..AVIATION COORDS.. 55NM N/S /46N MAF - 26E DFW/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 35035.
LAT...LON 33720216 33799651 31909651 31840216
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 426 Status Report Messages:
STATUS REPORT #6 ON WW 426
VALID 201330Z - 201400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 WSW CRS
TO 15 NNW CRS.
WW 426 WILL BE ALLOWED TO EXPIRE AT 201400Z.
..PETERS..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC147-231-257-349-201400-
TX
. TEXAS COUNTIES INCLUDED ARE
FANNIN HUNT KAUFMAN
NAVARRO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 426
VALID 201225Z - 201340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 N ACT TO
25 ENE DAL.
..KERR..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC085-139-147-217-231-257-349-397-201340-
TX
. TEXAS COUNTIES INCLUDED ARE
COLLIN ELLIS FANNIN
HILL HUNT KAUFMAN
NAVARRO ROCKWALL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 426
VALID 201145Z - 201240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNW ACT
TO 10 ENE GYI.
..KERR..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC085-139-147-181-217-231-257-349-397-201240-
TX
. TEXAS COUNTIES INCLUDED ARE
COLLIN ELLIS FANNIN
GRAYSON HILL HUNT
KAUFMAN NAVARRO ROCKWALL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 426
VALID 201035Z - 201140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 WNW BWD
TO 10 ENE GYI.
..KERR..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC035-049-085-093-113-121-139-143-147-181-217-221-231-251-257-
349-367-397-425-439-201140-
TX
. TEXAS COUNTIES INCLUDED ARE
BOSQUE BROWN COLLIN
COMANCHE DALLAS DENTON
ELLIS ERATH FANNIN
GRAYSON HILL HOOD
HUNT JOHNSON KAUFMAN
NAVARRO PARKER ROCKWALL
SOMERVELL TARRANT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 426
VALID 200830Z - 200940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC033-035-049-059-081-083-085-093-097-113-115-121-133-139-143-
147-151-169-173-181-207-217-221-227-231-237-251-253-257-263-305-
317-329-335-337-349-353-363-367-397-399-415-417-425-429-431-433-
439-441-445-447-497-503-200940-
TX
. TEXAS COUNTIES INCLUDED ARE
BORDEN BOSQUE BROWN
CALLAHAN COKE COLEMAN
COLLIN COMANCHE COOKE
DALLAS DAWSON DENTON
EASTLAND ELLIS ERATH
FANNIN FISHER GARZA
GLASSCOCK GRAYSON HASKELL
HILL HOOD HOWARD
HUNT JACK JOHNSON
JONES KAUFMAN KENT
LYNN MARTIN MIDLAND
MITCHELL MONTAGUE NAVARRO
NOLAN PALO PINTO PARKER
ROCKWALL RUNNELS SCURRY
SHACKELFORD SOMERVELL STEPHENS
STERLING STONEWALL TARRANT
TAYLOR TERRY THROCKMORTON
WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 426
VALID 200735Z - 200840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..06/20/07
ATTN...WFO...MAF...FWD...SJT...LUB...
&&
STATUS REPORT FOR WS 426
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC033-035-049-059-081-083-085-093-097-113-115-121-133-139-143-
147-151-169-173-181-207-217-221-227-231-237-251-253-257-263-305-
317-329-335-337-349-353-363-367-397-399-415-417-425-429-431-433-
439-441-445-447-497-503-200840-
TX
. TEXAS COUNTIES INCLUDED ARE
BORDEN BOSQUE BROWN
CALLAHAN COKE COLEMAN
COLLIN COMANCHE COOKE
DALLAS DAWSON DENTON
EASTLAND ELLIS ERATH
FANNIN FISHER GARZA
GLASSCOCK GRAYSON HASKELL
HILL HOOD HOWARD
HUNT JACK JOHNSON
JONES KAUFMAN KENT
LYNN MARTIN MIDLAND
MITCHELL MONTAGUE NAVARRO
NOLAN PALO PINTO PARKER
ROCKWALL RUNNELS SCURRY
SHACKELFORD SOMERVELL STEPHENS
STERLING STONEWALL TARRANT
TAYLOR TERRY THROCKMORTON
WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (<2%)
|
Wind
Probability of 10 or more severe wind events
|
High (>95%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (10%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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 
@NWSSPC
