Hazardous Weather Outlook
Issued by NWS Oklahoma City, OK

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FLUS44 KOUN 271001
HWOOUN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
501 AM CDT WED MAY 27 2015

OKZ004>048-050>052-TXZ083>090-281015-
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-
501 AM CDT WED MAY 27 2015

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

.DAY ONE...TODAY AND TONIGHT...

.FLOODING...
NUMEROUS STREAMS...CREEKS...AND RIVERS REMAIN IN FLOOD ACROSS
PARTS OF OKLAHOMA AND WESTERN NORTH TEXAS. ANY ADDITIONAL
RAINFALL THROUGH TONIGHT WILL ONLY WORSEN ONGOING FLOODING.

.THUNDERSTORMS...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING ACROSS PARTS OF WESTERN OKLAHOMA AND ALL OF WESTERN NORTH
TEXAS.

LOCATION...
THE SLIGHT RISK AREA IS WEST OF AN ALVA TO CHICKASHA TO ARDMORE
LINE...WHICH INCLUDES ALL OF WESTERN NORTH TEXAS. THERE IS A
MARGINAL RISK FOR SEVERE STORMS EAST OF THIS LINE.

TIMING...
1 PM THIS AFTERNOON TO MIDNIGHT TONIGHT...

IMPACTS...
LARGE HAIL UP TO GOLF BALLS...
DAMAGING WINDS UP TO 70 MPH...
LOCALLY HEAVY RAINFALL WHICH MAY CAUSE FLASH FLOODING...

DISCUSSION...
THROUGH 1 PM THIS AFTERNOON...ISOLATED TO SCATTERED THUNDERSTORMS
MAY FORM OVER THE AREA...PARTICULARLY IN CENTRAL AND SOUTHERN
OKLAHOMA. IF THESE STORMS OCCUR...THEY WOULD BE ELEVATED IN NATURE
WITH LOCALLY HEAVY RAINFALL AND FLASH FLOODING AS THE MAIN
HAZARDS. A FEW MARGINALLY SEVERE HAIL REPORTS UP TO HALF DOLLARS
COULD OCCUR AS WELL.

AFTER 1 PM THIS AFTERNOON...ISOLATED TO SCATTERED SEVERE
THUNDERSTORMS WILL LIKELY FIRST FORM IN WESTERN NORTH TEXAS..
THEN WESTERN AND SOUTHERN OKLAHOMA BEFORE SLOWLY MOVING EAST OR
NORTHEAST THROUGH THE EVENING. THESE STORMS MAY ORGANIZE INTO
CLUSTERS AND LINES. STORMS ARE EXPECTED TO WEAKEN MAINLY BELOW
SEVERE LIMITS AFTER MIDNIGHT TONIGHT.

DUE TO MODERATE TO STRONG INSTABILITY...AND SUFFICIENT MOISTURE
AND SHEAR...SOME SEVERE STORMS ARE POSSIBLE THIS AFTERNOON AND
EVENING. LARGE HAIL AND DAMAGING WINDS WOULD BE THE MAIN
HAZARDS. WEAK LOW LEVEL SHEAR IS EXPECTED TO LIMIT THE TORNADO
POTENTIAL THIS AFTERNOON AND EVENING.

LOCALLY HEAVY RAINFALL OF A FEW INCHES MAY OCCUR IN SMALL
AREAS AS STORMS MAY MOVE SLOWLY. THIS MAY CAUSE FLASH FLOODING.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

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

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

NOT MUCH CHANGE TO THE ONGOING PATTERN IS EXPECTED THROUGH
SATURDAY. THIS WILL ALLOW FOR A RISK OF STRONG TO SEVERE
THUNDERSTORMS EACH DAY...AND A RISK OF HEAVY RAINFALL AND
ASSOCIATED FLOODING. THURSDAY NIGHT THROUGH SATURDAY MAY
HAVE THE HIGHEST CHANCES FOR STORMS. STORM CHANCES MAY
DECREASE SUNDAY THROUGH TUESDAY.

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

$$

MBS


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