Hazardous Weather Outlook
Issued by NWS Oklahoma City, OK

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FLUS44 KOUN 181651
HWOOUN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CDT SAT APR 18 2015

OKZ004>048-050>052-TXZ083>090-191000-
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-
1150 AM CDT SAT APR 18 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...

.THUNDERSTORMS...
THERE IS AN ENHANCED RISK OF SEVERE STORMS ACROSS MUCH OF
OKLAHOMA AND ALL OF WESTERN NORTH TEXAS.

LOCATION...
THE ENHANCED RISK AREA IS ALONG AND EAST OF A LINE FROM BUFFALO...TO
CHEYENNE...TO MANGUM IN OKLAHOMA...TO QUANAH AND BENJAMIN IN WESTERN
NORTH TEXAS....AND WEST OF A LINE FROM MEDFORD...TO OKLAHOMA CITY..TO
. THE REMAINDER OF OKLAHOMA AND WESTERN NORTH TEXAS IS IN
A SLIGHT RISK.

TIMING...
3PM TO MIDNIGHT.

IMPACTS...
HAIL UP TO THE SIZE OF GOLF BALLS TO TENNIS BALLS...AND WIND GUSTS UP
TO 70 MPH WILL BE THE MAIN CONCERNS. LOCALLY HEAVY RAIN WILL ALSO BE
POSSIBLE.

DISCUSSION...
SHOWERS AND ISOLATED STORMS ASSOCIATED WITH A WEAK DISTURBANCE
WILL CONTINUE TO DRIFT EASTWARD FROM CENTRAL THROUGH NORTHERN
OKLAHOMA. THIS ACTIVITY WILL REMAIN NON-SEVERE WITH OCCASIONAL
CLOUD TO GROUND LIGHTNING THE MAIN CONCERN.

ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP LATER THIS
AFTERNOON AND MOVE ACROSS THE AREA THROUGH TONIGHT. SUBSTANTIAL
LOW CLOUDS OVER WESTERN OKLAHOMA AND WESTERN NORTH TEXAS HAVE
RESULTED IN SLOW SURFACE HEATING AND DESTABILIZATION...BUT THESE
WILL LIKELY LIFT WITH FURTHER SURFACE HEATING. WITH VERY LITTLE
CAPPING...STORMS MAY DEVELOP MOST ANYWHERE ACROSS OKLAHOMA AND
NORTH TEXAS...BUT THE MOST LIKELY AREA FOR STRONG TO SEVERE STORM
DEVELOPMENT WILL BE NEAR A DRYLINE IN WESTERN OKLAHOMA AND WESTERN
NORTH TEXAS. INSTABILITY AND WIND SHEAR THIS AFTERNOON AND EVENING
WILL BE SUFFICIENT FOR VERY LARGE HAIL. THE STORMS COULD DEVELOP
INTO ONE OR MORE LINES OR CLUSTERS THIS EVENING...RESULTING IN MORE
OF A DAMAGING WIND THREAT. SHOWERS AND THUNDERSTORMS WILL LIKELY
CONTINUE INTO SUNDAY BUT THE SEVERE WEATHER POTENTIAL IS EXPECTED
TO DECREASE OVERNIGHT.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
AREA SHOULD PREPARE FOR SEVERE WEATHER OPERATIONS THIS AFTERNOON
THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

.THUNDERSTORMS...
SHOWERS AND THUNDERSTORMS WILL LINGER INTO SUNDAY. SEVERE WEATHER
IS UNLIKELY BUT A FEW STORMS MAY BECOME STRONG PRODUCING SMALL
HAIL.

SHOWER AND THUNDERSTORM CHANCES WILL RETURN MONDAY NIGHT THROUGH
FRIDAY...AS A SERIES OF UPPER LEVEL SYSTEMS MOVE ACROSS THE SOUTHERN
PLAINS. STRONG TO SEVERE THUNDERSTORM POTENTIAL WILL LIKELY EXIST
FOR A TIME FROM MID TO LATE NEXT WEEK.

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

$$

EM/MBS/AUSTIN



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