Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 177
NWS STORM PREDICTION CENTER NORMAN OK
935 AM CDT WED APR 9 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHWEST OKLAHOMA
WESTERN NORTH TEXAS
EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 935 AM UNTIL
400 PM 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 EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF
CLINTON OKLAHOMA TO 45 MILES WEST SOUTHWEST OF MINERAL WELLS
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
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 176...
DISCUSSION...VEERING LOW LEVEL JET WILL ALLOW FOR MOISTURE RETURN
NWD WITH STEEP LAPSE RATES AND MODERATE INSTABILITY CONTRIBUTING TO
A THREAT FOR ELEVATED SEVERE THUNDERSTORMS SPREADING NEWD ACROSS WRN
N TX AND INTO SW OK. HAIL...SOME LARGE...ARE EXPECTED TO BE THE
MAIN THREAT.
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 500. MEAN STORM
MOTION VECTOR 21535.
...PETERS/HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 177 SEVERE TSTM OK TX 091435Z - 092100Z
AXIS..65 STATUTE MILES EAST AND WEST OF LINE..
30NE CSM/CLINTON OK/ - 45WSW MWL/MINERAL WELLS TX/
..AVIATION COORDS.. 55NM E/W /61SW END - 55E ABI/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 21535.
LAT...LON 35639766 32529766 32529990 35639998
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 177 Status Report Messages:
STATUS REPORT #6 ON WW 177
VALID 092035Z - 092100Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 SW ADM TO
40 NNW ABI.
WW 177 WILL BE ALLOWED TO EXPIRE AT 092100Z.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 600
..SMITH..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
092100-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-092100-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
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.
$$
STATUS REPORT #5 ON WW 177
VALID 091935Z - 092040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 E SPS TO
40 NNW ABI.
..SMITH..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
092040-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-092040-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 177
VALID 091840Z - 091940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SW ADM TO
40 NNW ABI.
..SMITH..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
091940-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-091940-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
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.
$$
STATUS REPORT #3 ON WW 177
VALID 091740Z - 091840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 598
..SMITH..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
091840-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-151-155-197-207-237-253-275-337-363-367-417-429-
447-485-487-497-503-091840-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FISHER FOARD HARDEMAN
HASKELL JACK JONES
KNOX MONTAGUE PALO PINTO
PARKER SHACKELFORD STEPHENS
THROCKMORTON WICHITA WILBARGER
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 #2 ON WW 177
VALID 091640Z - 091740Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SMITH..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
091740-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-151-155-197-207-237-253-275-337-363-367-417-429-
447-485-487-497-503-091740-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FISHER FOARD HARDEMAN
HASKELL JACK JONES
KNOX MONTAGUE PALO PINTO
PARKER SHACKELFORD STEPHENS
THROCKMORTON WICHITA WILBARGER
WISE YOUNG
$$
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.
$$
STATUS REPORT #1 ON WW 177
VALID 091535Z - 091640Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..PETERS..04/09/08
ATTN...WFO...OUN...SJT...FWD...
&&
STATUS REPORT FOR WS 177
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC009-015-031-033-039-051-055-057-065-067-075-129-137-141-149-
091640-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BECKHAM CADDO COMANCHE
COTTON CUSTER GRADY
GREER HARMON JACKSON
JEFFERSON KIOWA ROGER MILLS
STEPHENS TILLMAN WASHITA
$$
TXC009-023-077-151-155-197-207-237-253-275-337-363-367-417-429-
447-485-487-497-503-091640-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FISHER FOARD HARDEMAN
HASKELL JACK JONES
KNOX MONTAGUE PALO PINTO
PARKER SHACKELFORD STEPHENS
THROCKMORTON WICHITA WILBARGER
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
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (50%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (50%)
|
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.