Special Weather Statement, NWS Norman, OK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
230 PM CDT TUE MAY 28 2013

.DISCUSSION...
SHOWERS/THUNDERSTORMS WILL BE POSSIBLE THROUGH TONIGHT ACROSS PARTS
OF OKLAHOMA AND WESTERN NORTH TEXAS. A FEW SHOWERS/STORMS HAVE
DEVELOPED ACROSS NORTH CENTRAL OK EARLY THIS AFTN AND COULD CONTINUE
TO DEVELOP OVER THE NEXT SEVERAL HOURS. VISIBLE SATELLITE SHOWS CU
DEVELOPING ALONG THE DRYLINE IN FAR NW OK AND THE TX/OK PANHANDLES.
CONVECTION IS EXPECTED TO DEVELOP IN THIS AREA AND AFFECT WESTERN
PORTIONS OF THE FA. THESE STORMS COULD BE SEVERE PRODUCING LARGE
HAIL AND DAMAGING WIND GUSTS. THIS ACTIVITY COULD MOVE FURTHER EAST
LATER THIS EVENING INTO CENTRAL PARTS OF THE FA. SEVERE STORMS WILL
STILL BE POSSIBLE WITH THESE STORMS. EVEN THOUGH LARGE HAIL WILL
STILL BE POSSIBLE... DAMAGING WIND GUSTS WILL BE THE PRIMARY CONCERN
IN THESE AREAS.

THE BEST POTENTIAL FOR SEVERE WX WILL BE WEDNESDAY. DRYLINE WILL
DEVELOP OVER THE OK/TX PANHANDLES AGAIN TOMORROW WITH AN MID/UPPER
WAVE MOVING FROM THE ROCKIES INTO THE SOUTHERN/CENTRAL PLAINS. THERE
WILL BE STRONG INSTABILITY AND THIS WAVE WILL PROVIDE BETTER WIND
SHEAR FOR THE SEVERE STORMS WEDNESDAY. VERY LARGE HAIL... DAMAGING
WINDS... AND EVEN A FEW TORNADOES WILL BE POSSIBLE WEDNESDAY. SEVERE
STORMS WILL ALSO BE POSSIBLE THURSDAY WITH A FRONTAL BOUNDARY ALSO
BEING IN OR NEAR THE AREA. HOWEVER... THE EVOLUTION OF THE STORM
ACTIVITY THURSDAY WILL BE DEPENDENT ON WHAT HAPPENS WEDNESDAY/WED
NIGHT.

THE FRONT WILL GRADUALLY MOVE SOUTH FRIDAY/SATURDAY. THE SEVERE
POTENTIAL WILL BE LOWER THESE DAYS BUT HEAVY RAIN/FLOODING COULD
BECOME AN ISSUE ACROSS PARTS OF THE FA... WITH THE MOST LIKELY AREA
TO CURRENTLY BE CONCERNED WITH WOULD BE ACROSS NORTH CENTRAL OK.
MODELS THEN SHOW THAT THINGS COULD START TO DRY OUT IN SOME OF THE
FA INTO EARLY NEXT WEEK BUT RAIN CHANCES MAY NOT GO COMPLETELY AWAY
FOR THE ENTIRE AREA. IN ADDITION... BREEZY/STRONG WINDS WILL AFFECT
THE AREA FOR THE NEXT SEVERAL DAYS.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  68  79  67  83 /  20  40  50  30
HOBART OK         68  81  67  92 /  30  40  30  20
WICHITA FALLS TX  69  84  70  92 /  20  30  30  20
GAGE OK           68  83  62  91 /  40  40  30  20
PONCA CITY OK     70  79  69  81 /  20  30  60  40
DURANT OK         69  83  69  84 /  10  20  30  20

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

02/25

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CDT TUE MAY 28 2013

OKZ004>048-050>052-TXZ083>090-291100-
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-
1200 PM CDT TUE MAY 28 2013

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS
PORTIONS OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE SLIGHT RISK AREA IS WEST OF A LINE FROM SEMINOLE TO MARIETTA.

IMPACTS...
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING HAIL UP TO THE
SIZE OF TENNIS BALLS AND WIND GUSTS OF 70 MPH.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS IS FROM 4 PM
THROUGH 1 AM.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREA SHOULD PLAN FOR POSSIBLE SEVERE WEATHER OPERATIONS
LATE THIS AFTERNOON AND EVENING.

DISCUSSION... SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL BE
POSSIBLE ACROSS PARTS OF WESTERN NORTH TEXAS AND SOUTHERN OKLAHOMA
THROUGH THE EARLY AFTERNOON HOURS. HOWEVER...NO SEVERE WEATHER IS
EXPECTED WITH THIS ACTIVITY.

A DRYLINE WILL TAKE SHAPE ACROSS THE EASTERN PORTIONS OF THE
OKLAHOMA AND TEXAS PANHANDLES THIS AFTERNOON. MEANWHILE... AN
UPPER LEVEL DISTURBANCE WILL MOVE OUT OF THE SOUTHERN ROCKIES
INTO THE SOUTHERN PLAINS. DAYTIME HEATING ALONG WITH LIFT
ASSOCIATED WITH THIS DISTURBANCE WILL RESULT IN THE DEVELOPMENT
OF WIDELY SCATTERED THUNDERSTORMS ALONG AND EAST OF THE DRYLINE THIS
AFTERNOON. STRONG INSTABILITY AND FAVORABLE WIND FIELDS WILL RESULT
IN THE STORMS THAT DO DEVELOP LIKELY BECOMING SEVERE.

THESE STORMS... INITIALLY EXPECTED TO BE LOCATED JUST WEST OF
THE AREA... WILL MOVE EAST AND NORTHEAST INTO WESTERN PORTIONS OF
OKLAHOMA AND WESTERN NORTH TEXAS BY LATE THIS AFTERNOON AND EARLY
EVENING. THE STORMS MAY MOVE INTO CENTRAL OKLAHOMA BEFORE THE THREAT
FOR SEVERE WEATHER DIMINISHES LATER TONIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT WEDNESDAY MAY 28.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...40 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...70 PERCENT.

OTHER HAZARDOUS WEATHER...
STRONG... GUSTY SOUTH WINDS WILL MAKE FOR DIFFICULT DRIVING
CONDITIONS... ESPECIALLY ON EAST WEST ROADWAYS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORM CHANCES WILL PERSIST THROUGH THE WEEK AND THE
WEEKEND. THERE WILL BE A CHANCE FOR SEVERE WEATHER AGAIN ACROSS
CENTRAL AND WESTERN OKLAHOMA AND WESTERN NORTH TEXAS ON WEDNESDAY.
SEVERE WEATHER WILL REMAIN POSSIBLE ACROSS THE AREA THROUGH THE
WEEK.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM
WEDNESDAY.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
455 PM CDT TUE MAY 28 2013

OKZ004-282230-
HARPER OK-
455 PM CDT TUE MAY 28 2013

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HARPER COUNTY UNTIL 530
PM CDT...

AT 453 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES SOUTH OF
BUFFALO...MOVING NORTH AT 20 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3698 9970 3688 9938 3661 9957 3668 9978
TIME...MOT...LOC 2153Z 201DEG 16KT 3672 9965

WR

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