Severe Thunderstorm Warning 597, NWS Norman, OK

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
117 PM CDT FRI AUG 21 2015

OKZ004>048-050>052-TXZ083>090-221830-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
117 PM CDT FRI AUG 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...
A STORM SYSTEM OVER NEW MEXICO WILL APPROACH THE AREA THIS
AFTERNOON AND EVENING. AS THIS SYSTEM APPROACHES... SCATTERED
STORMS ARE EXPECTED TO DEVELOP OVER THE OKLAHOMA AND TEXAS
PANHANDLES THIS AFTERNOON AND MOVE INTO WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS. A FEW OF THE STORMS MAY PRODUCE HAIL LARGER
THAN HALF DOLLARS AND STRONG WIND GUSTS. THE BEST CHANCE OF STRONG
TO SEVERE STORMS WILL BE ACROSS WESTERN HALF OF OKLAHOMA AND
WESTERN NORTH TEXAS THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...
THUNDERSTORMS WILL BE POSSIBLE SATURDAY THROUGH TUESDAY. THE BEST
CHANCE FOR RAIN AND THUNDERSTORMS WILL BE ON SUNDAY AS A COLD
FRONT MOVES ACROSS THE SOUTHERN PLAINS.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
704 PM CDT FRI AUG 21 2015

OKZ005-220045-
WOODS OK-
704 PM CDT FRI AUG 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN WOODS COUNTY UNTIL 745
PM CDT...

AT 702 PM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
4 MILES NORTHWEST OF ALVA TO 11 MILES SOUTHWEST OF HARDTNER TO 9
MILES SOUTH OF BUTTERMILK...MOVING EAST AT 15 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 40 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3700 9855 3687 9854 3675 9856 3677 9876
      3679 9922 3700 9944
TIME...MOT...LOC 0002Z 260DEG 12KT 3684 9873 3693 9884 3697 9930

30

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
745 PM CDT FRI AUG 21 2015

OKZ005-006-220115-
ALFALFA OK-WOODS OK-
745 PM CDT FRI AUG 21 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ALFALFA AND
NORTHEASTERN WOODS COUNTIES UNTIL 815 PM CDT...

AT 744 PM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
4 MILES NORTHWEST OF BURLINGTON TO 7 MILES SOUTHWEST OF HARDTNER...
MOVING EAST AT 35 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3699 9819 3684 9838 3683 9893 3700 9895
TIME...MOT...LOC 0044Z 255DEG 31KT 3696 9846 3694 9874

30

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
856 PM CDT FRI AUG 21 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0830 PM     TSTM WND GST     7 SSW ALVA              36.71N 98.72W
08/21/2015  M78.00 MPH       WOODS              OK   MESONET

0835 PM     TSTM WND GST     7 SSW ALVA              36.71N 98.72W
08/21/2015  M61.00 MPH       WOODS              OK   MESONET

0845 PM     TSTM WND GST     7 SSW ALVA              36.71N 98.72W
08/21/2015  M78.00 MPH       WOODS              OK   MESONET

&&

DW