Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 218
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT TUE APR 26 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN OKLAHOMA
WESTERN NORTH TEXAS
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
1000 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 55
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF
ALTUS OKLAHOMA TO 20 MILES NORTH NORTHEAST OF DURANT OKLAHOMA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).
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 213...WW 214...WW
215...WW 216...WW 217...
DISCUSSION...SCATTERED THUNDERSTORMS HAVE DEVELOPED IN THE LEFT-EXIT
REGION OF A STRONG MID/UPPER LEVEL JET OVER THE TX PANHANDLE. THESE
STORMS ARE LIKELY TO TRACK EASTWARD ACROSS SOUTHERN OK AND WESTERN
NORTH TX THROUGH THE LATE AFTERNOON AND EVENING. VERTICAL SHEAR
PROFILES SUPPORT ROTATING STORMS CAPABLE OF HAIL AND DAMAGING WINDS.
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 450. MEAN STORM
MOTION VECTOR 27035.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 218 SEVERE TSTM OK TX 262045Z - 270300Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
40W LTS/ALTUS OK/ - 20NNE DUA/DURANT OK/
..AVIATION COORDS.. 50NM N/S /23NE CDS - 45E ADM/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27035.
LAT...LON 35439997 35009626 33419626 33849997
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 218 Status Report Messages:
STATUS REPORT #6 ON WW 218
VALID 270230Z - 270300Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 W GYI TO
30 N DUA TO 5 NNW MLC.
WW 218 WILL BE ALLOWED TO EXPIRE AT 270300Z.
..DEAN..04/27/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-029-270300-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN COAL
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 218
VALID 270145Z - 270240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 604
..DEAN..04/27/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-009-013-015-019-029-031-033-039-049-051-055-057-065-067-
069-075-085-087-095-099-123-129-137-141-149-270240-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BECKHAM BRYAN
CADDO CARTER COAL
COMANCHE COTTON CUSTER
GARVIN GRADY GREER
HARMON JACKSON JEFFERSON
JOHNSTON KIOWA LOVE
MCCLAIN MARSHALL MURRAY
PONTOTOC ROGER MILLS STEPHENS
TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-270240-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
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.
$$
STATUS REPORT #4 ON WW 218
VALID 270040Z - 270140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 604
..DEAN..04/27/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-009-013-015-019-029-031-033-039-049-051-055-057-065-067-
069-075-085-087-095-099-123-129-137-141-149-270140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BECKHAM BRYAN
CADDO CARTER COAL
COMANCHE COTTON CUSTER
GARVIN GRADY GREER
HARMON JACKSON JEFFERSON
JOHNSTON KIOWA LOVE
MCCLAIN MARSHALL MURRAY
PONTOTOC ROGER MILLS STEPHENS
TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-270140-
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 218
VALID 262345Z - 270040Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..DEAN..04/26/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-009-013-015-019-029-031-033-039-049-051-055-057-065-067-
069-075-085-087-095-099-123-129-137-141-149-270040-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BECKHAM BRYAN
CADDO CARTER COAL
COMANCHE COTTON CUSTER
GARVIN GRADY GREER
HARMON JACKSON JEFFERSON
JOHNSTON KIOWA LOVE
MCCLAIN MARSHALL MURRAY
PONTOTOC ROGER MILLS STEPHENS
TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-270040-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
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.
$$
STATUS REPORT #2 ON WW 218
VALID 262240Z - 262340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EDWARDS..04/26/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-009-013-015-019-029-031-033-039-049-051-055-057-065-067-
069-075-085-087-095-099-123-129-137-141-149-262340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BECKHAM BRYAN
CADDO CARTER COAL
COMANCHE COTTON CUSTER
GARVIN GRADY GREER
HARMON JACKSON JEFFERSON
JOHNSTON KIOWA LOVE
MCCLAIN MARSHALL MURRAY
PONTOTOC ROGER MILLS STEPHENS
TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-262340-
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 #1 ON WW 218
VALID 262125Z - 262240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..EDWARDS..04/26/11
ATTN...WFO...OUN...
&&
STATUS REPORT FOR WS 218
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-009-013-015-019-029-031-033-039-049-051-055-057-065-067-
069-075-085-087-095-099-123-129-137-141-149-262240-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BECKHAM BRYAN
CADDO CARTER COAL
COMANCHE COTTON CUSTER
GARVIN GRADY GREER
HARMON JACKSON JEFFERSON
JOHNSTON KIOWA LOVE
MCCLAIN MARSHALL MURRAY
PONTOTOC ROGER MILLS STEPHENS
TILLMAN WASHITA
$$
TXC009-023-077-155-197-275-485-487-262240-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
FOARD HARDEMAN KNOX
WICHITA WILBARGER
$$
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.
$$
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
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
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.