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Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
414 AM CDT TUE APR 21 2015

OKZ004>048-050>052-TXZ083>090-220915-
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-
414 AM CDT TUE APR 21 2015

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

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

.THUNDERSTORMS...
THERE IS A MARGINAL RISK FOR SEVERE THUNDERSTORMS ACROSS PARTS OF
NORTHERN AND WESTERN OKLAHOMA... MAINLY NORTH AND WEST OF A LINE
FROM PERRY AND ENID... TO WATONGA AND CLINTON... TO ALTUS
OKLAHOMA.

DISCUSSION...
A FEW THUNDERSTORMS WILL BE POSSIBLE IN NORTHERN OKLAHOMA LATE
THIS AFTERNOON AND THIS EVENING. THUNDERSTORM CHANCES WILL THEN
INCREASE LATER THIS EVENING AND CONTINUE INTO THE EARLY MORNING
HOURS ON WEDNESDAY FOR AREAS MAINLY ALONG AND NORTHWEST OF I-44.
THERE WILL BE A CHANCE FOR STRONG TO SEVERE STORMS LATE AFTERNOON
AND EVENING BUT THE POTENTIAL FOR SEVERE WEATHER WILL INCREASE
OVERNIGHT INTO EARLY WEDNESDAY. THE PRIMARY CONCERN WILL BE LARGE
HAIL UP TO THE SIZE OF GOLF BALLS ALTHOUGH SOME STRONG WIND GUSTS
MAY ALSO OCCUR.

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

.THUNDERSTORMS...
THUNDERSTORMS WILL BE POSSIBLE THROUGH FRIDAY WITH THE WEEKEND
REMAINING MOSTLY DRY UNTIL THUNDERSTORM CHANCES RETURN SUNDAY
NIGHT AND CONTINUE INTO MONDAY.

ON WEDNESDAY... THERE WILL LIKELY BE ONGOING STORMS DURING THE
MORNING HOURS WEDNESDAY. A FEW OF THE STORMS MAY BE STRONG TO
SEVERE PRODUCING HAIL UP TO THE SIZE OF HALF DOLLARS.

THERE IS THEN A SLIGHT AND ENHANCED RISK OF SEVERE STORMS ACROSS
APPROXIMATELY THE SOUTHERN HALF OF OKLAHOMA AND ALL OF WESTERN
NORTH TEXAS WEDNESDAY AFTERNOON AND NIGHT. A BOUNDARY IS EXPECTED
TO BE ACROSS PARTS OF THE AREA WEDNESDAY AFTERNOON WITH MOISTURE
INCREASING ACROSS PORTIONS OF THE AREA. THUNDERSTORMS COULD
DEVELOP NEAR AND SOUTH OF THE BOUNDARY WEDNESDAY AFTERNOON AND
EARLY EVENING. INSTABILITY AND SHEAR WILL BE STRONG ENOUGH FOR
LARGE HAIL AND STRONG WIND GUSTS. THERE IS ALSO A LOW POTENTIAL
FOR SOME TORNADOES. AS THE EVENING PROGRESSES... ANY THUNDERSTORMS
THAT DEVELOP COULD FORM INTO ONE OR MORE STORM COMPLEXES AND MOVE
ACROSS THE AREA REDUCING THE POTENTIAL FOR LARGE HAIL BUT
INCREASING THE RISK FOR DAMAGING STRAIGHT LINE WINDS. HEAVY RAIN
WILL ALSO BE A CONCERN WEDNESDAY AND WEDNESDAY NIGHT.

FOR THURSDAY... THERE IS A MARGINAL RISK OF SEVERE STORMS ACROSS
PARTS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. MARGINALLY
SEVERE HAIL AND STRONG WIND GUSTS WILL BE THE MAIN CONCERNS.

ON FRIDAY... STRONG TO SEVERE STORMS WILL BE POSSIBLE MAINLY
ALONG AND EAST OF I-35 IN OKLAHOMA. LARGE HAIL AND STRONG WIND
GUSTS WILL BE THE MAIN CONCERNS. HOWEVER... SOME TORNADOES MAY
ALSO BECOME POSSIBLE.

THE POTENTIAL FOR SEVERE WEATHER FOR MUCH OF THE WEEK WILL BE
HIGHLY DEPENDENT ON WHAT HAPPENS ON THE PREVIOUS AFTERNOON AND
NIGHT SO CHECK THE FORECAST FREQUENTLY FOR THE LATEST INFORMATION.

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

$$

EM/MBS




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