Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 9
NWS Storm Prediction Center Norman OK
220 PM CDT Sat Mar 17 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
North-central and Northeast Texas
* Effective this Saturday afternoon and evening from 220 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 3 inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Strong to severe thunderstorms will continue to increase
this afternoon, initially across the North-central Texas Big Country
and then spreading generally eastward toward parts of east/northeast
Texas through early evening. Large hail will be the most common
hazard. Damaging wind potential could somewhat increase later this
afternoon into evening if a semi-organized storm cluster evolves.
The severe thunderstorm watch area is approximately along and 70
statute miles north and south of a line from 30 miles south of
Abilene TX to 30 miles south of Tyler TX. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
24025.
...Guyer
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 9
NWS Storm Prediction Center Norman OK
220 PM CDT Sat Mar 17 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
North-central and Northeast Texas
* Effective this Saturday afternoon and evening from 220 PM until
1100 PM CDT.
* Primary threats include...
Scattered large hail likely with isolated very large hail events
to 3 inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Strong to severe thunderstorms will continue to increase
this afternoon, initially across the North-central Texas Big Country
and then spreading generally eastward toward parts of east/northeast
Texas through early evening. Large hail will be the most common
hazard. Damaging wind potential could somewhat increase later this
afternoon into evening if a semi-organized storm cluster evolves.
The severe thunderstorm watch area is approximately along and 70
statute miles north and south of a line from 30 miles south of
Abilene TX to 30 miles south of Tyler TX. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
3 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
24025.
...Guyer
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 9 SEVERE TSTM TX 171920Z - 180400Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
30S ABI/ABILENE TX/ - 30S TYR/TYLER TX/
..AVIATION COORDS.. 60NM N/S /31SSE ABI - 45SW GGG/
HAIL SURFACE AND ALOFT..3 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 24025.
LAT...LON 33009968 32939540 30899540 30969968
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 9 Status Report Messages:
STATUS REPORT #7 ON WW 9
VALID 180340Z - 180400Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNE CLL
TO 30 NW UTS TO 15 N UTS.
WW 9 WILL BE ALLOWED TO EXPIRE AT 180400Z AS STORMS CONTINUE TO
WEAKEN.
..DIAL..03/18/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC313-180400-
TX
. TEXAS COUNTIES INCLUDED ARE
MADISON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #6 ON WW 9
VALID 180230Z - 180340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE TPL
TO 20 SE ACT TO 45 WNW LFK.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 132
..DIAL..03/18/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC145-225-289-293-313-331-395-180340-
TX
. TEXAS COUNTIES INCLUDED ARE
FALLS HOUSTON LEON
LIMESTONE MADISON MILAM
ROBERTSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 9
VALID 180140Z - 180240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 WSW TPL
TO 5 SSW ACT TO 35 SSE CRS TO 45 NW LFK.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 132
..DIAL..03/18/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC027-145-161-225-289-293-309-313-331-395-180240-
TX
. TEXAS COUNTIES INCLUDED ARE
BELL FALLS FREESTONE
HOUSTON LEON LIMESTONE
MCLENNAN MADISON MILAM
ROBERTSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 9
VALID 180040Z - 180140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 W TPL TO
40 SSE SEP TO 20 NE ACT TO 35 ESE ACT TO 35 S TYR.
..DIAL..03/18/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-027-099-145-161-225-281-289-293-309-313-331-395-180140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BELL CORYELL
FALLS FREESTONE HOUSTON
LAMPASAS LEON LIMESTONE
MCLENNAN MADISON MILAM
ROBERTSON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 9
VALID 172340Z - 180040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE JCT
TO 30 SW BWD TO 30 NW ACT TO 25 S DAL TO 40 NNE CRS TO 15 N TYR.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 129
..DIAL..03/17/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-027-035-099-139-145-161-193-213-217-225-257-281-289-293-
307-309-313-331-333-349-395-411-467-180040-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BELL BOSQUE
CORYELL ELLIS FALLS
FREESTONE HAMILTON HENDERSON
HILL HOUSTON KAUFMAN
LAMPASAS LEON LIMESTONE
MCCULLOCH MCLENNAN MADISON
MILAM MILLS NAVARRO
ROBERTSON SAN SABA VAN ZANDT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 9
VALID 172230Z - 172340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 WSW BWD
TO 15 WNW BWD TO 15 SSW SEP TO 25 E SEP TO 10 NW DAL.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 129
..DIAL..03/17/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-027-035-049-083-093-099-113-139-145-161-193-213-217-221-
225-251-257-281-289-293-307-309-313-331-333-349-379-395-397-411-
425-439-467-172340-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BELL BOSQUE
BROWN COLEMAN COMANCHE
CORYELL DALLAS ELLIS
FALLS FREESTONE HAMILTON
HENDERSON HILL HOOD
HOUSTON JOHNSON KAUFMAN
LAMPASAS LEON LIMESTONE
MCCULLOCH MCLENNAN MADISON
MILAM MILLS NAVARRO
RAINS ROBERTSON ROCKWALL
SAN SABA SOMERVELL TARRANT
VAN ZANDT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 9
VALID 172025Z - 172140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..03/17/18
ATTN...WFO...FWD...SJT...HGX...
&&
STATUS REPORT FOR WS 9
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC001-027-035-049-059-083-093-099-113-133-139-143-145-161-193-
213-217-221-225-251-257-281-289-293-307-309-313-331-333-349-363-
367-379-395-397-399-411-417-425-429-439-441-467-172140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON BELL BOSQUE
BROWN CALLAHAN COLEMAN
COMANCHE CORYELL DALLAS
EASTLAND ELLIS ERATH
FALLS FREESTONE HAMILTON
HENDERSON HILL HOOD
HOUSTON JOHNSON KAUFMAN
LAMPASAS LEON LIMESTONE
MCCULLOCH MCLENNAN MADISON
MILAM MILLS NAVARRO
PALO PINTO PARKER RAINS
ROBERTSON ROCKWALL RUNNELS
SAN SABA SHACKELFORD SOMERVELL
STEPHENS TARRANT TAYLOR
VAN ZANDT
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (10%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
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 (90%)
|
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.