Hazardous weather outlook in the National Weather Service, Norman coverage area

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
458 AM CDT THU MAR 21 2013

OKZ004>048-050>052-TXZ083>090-211700-
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-
520 AM CDT THU MAR 21 2013

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

.DAY ONE…TODAY AND TONIGHT…

THUNDERSTORM OUTLOOK…
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH TONIGHT
ACROSS PORTIONS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS. THE
SLIGHT RISK IS FOR LOCATIONS PRIMARILY EAST OF A LINE FROM WICHITA
FALLS TO GRAHAM TEXAS…AND SOUTH OF A LINE FROM WAURIKA TO MARIETTA
OKLAHOMA NEAR THE RED RIVER.

TIMING…
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM 4 PM TO
MIDNIGHT.

DISCUSSION…
A STRONG UPPER LEVEL LOW PRESSURE CENTER WILL CONTINUE TO MOVE
SOUTH-SOUTHEAST ACROSS OKLAHOMA TODAY. IN RESPONSE…A STRONG COLD
FRONT WILL SWEEP ACROSS THE REGION…WITH SHOWERS AND THUNDERSTORMS
DEVELOPING ALONG THE FRONT. THE BEST CHANCES FOR RAIN AND THUNDERSTORMS
WILL RESIDE ACROSS SOUTH CENTRAL AND EASTERN OKLAHOMA. WIND GUSTS
NEARING 60 MPH WILL BE THE PRIMARY THREAT FOR ANY STRONG TO SEVERE
STORMS ALONG THE RED RIVER VALLEY THIS AFTERNOON AND EVENING…ALTHOUGH
SOME HAIL UP TO THE SIZE OF HALF DOLLARS CANNOT BE RULED OUT.

PROBABILITY TABLE…
VALID THROUGH 700 AM CDT FRIDAY MAR 22.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…80 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…30 PERCENT.

OTHER HAZARDOUS WEATHER…
FIRE WEATHER CONCERNS WILL BE HEIGHTENED ACROSS EXTREME SOUTHWESTERN
OKLAHOMA AND WESTERN NORTH TEXAS THIS AFTERNOON AS SOUTH-SOUTHWEST
WINDS GUST TO NEAR 30 MPH WITH MIN RH VALUES IN THE LOWER 20S.

.DAYS TWO THROUGH SEVEN…FRIDAY THROUGH WEDNESDAY…

THUNDERSTORM OUTLOOK…
AN ACTIVE WEATHER PATTERN WILL REMAIN POSITIONED ACROSS THE REGION
THROUGH THE WEEKEND. RAIN CHANCES WILL SLOWLY INCREASE FRIDAY EVENING
THROUGH THE WEEKEND…WITH SOME ISOLATED THUNDER ACROSS SOUTHERN
OKLAHOMA FRIDAY NIGHT AND SATURDAY.

OTHER HAZARDOUS WEATHER…
WITH A COLDER AIRMASS SPREADING SOUTHWARD ACROSS THE PLAINS…THERE
WILL BE A CHANCE OF LIGHT SNOW OR A RAIN-SNOW MIX ACROSS FAR NORTHERN
OKLAHOMA SATURDAY NIGHT THROUGH SUNDAY MORNING. SOME SNOW ACCUMULATION
IS EXPECTED…ALTHOUGH AMOUNTS APPEAR THEY WILL REMAIN BELOW 2 INCHES
AT THE MOMENT.

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