Possibility of severe thunderstorms today (Friday), any storms that form will likely be severe, according to the National Weather Service, Norman

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1204 PM CDT FRI MAR 30 2012

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-
1204 PM CDT FRI MAR 30 2012

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 THIS AFTERNOON
AND EVENING.

LOCATION…THE RISK AREA IS GENERALLY SOUTH OF INTERSTATE 40. 

TIMING…THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM
5 PM THROUGH MIDNIGHT.

IMPACTS…
LOCALLY SIGNIFICANT DAMAGE TO AUTOMOBILES…ROOFTOPS…AND
VEGETATION FROM LARGE HAIL GREATER THAN BASEBALL SIZE.

DAMAGING WIND GUSTS TO 65 MPH.

LOCAL URBAN AND SMALL STREAM FLOODING.

RECOMMENDED ACTIONS…
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD REMAIN ALERT TO THE POSSIBILITY OF THUNDERSTORM
DEVELOPMENT AFTER 5 PM. ANY STORMS THAT DO FORM ARE LIKELY TO BE
SEVERE.

DISCUSSION…
A WEAK…SLOW MOVING OUTFLOW BOUNDARY…EXTENDING FROM WEST CENTRAL
OKLAHOMA INTO CENTRAL AND SOUTHEAST OKLAHOMA MAY HELP WITH
THUNDERSTORM DEVELOPMENT BY MID TO LATE AFTERNOON. VERY WARM
TEMPERATURES AND HUMID CONDITIONS ALONG AND AHEAD OF THE BOUNDARY
WILL RESULT IN A VERY UNSTABLE ATMOSPHERE. IF A FEW STORMS CAN
FORM…VERY LARGE HAIL TO THE SIZE OF BASEBALLS WILL BE POSSIBLE
ALONG WITH DAMAGING THUNDERSTORM WINDS. A WEAK UPPER LEVEL TROUGH
MAY FAVOR DEVELOPMENT IN CENTRAL AND SOUTHEAST OKLAHOMA…WHILE A
SURFACE TROUGH FAVORS DEVELOPMENT IN SOUTHWEST OKLAHOMA AND
WESTERN NORTH TEXAS. UNDER SIMILAR CONDITIONS THURSDAY EVENING…
HAIL OVER FOUR INCHES IN DIAMETER WAS OBSERVED IN WESTERN
OKLAHOMA. IF STORMS FORM THIS AFTERNOON…THUNDERSTORM INTENSITY
SHOULD SLOWLY DECREASE DURING THE MID TO LATE EVENING HOURS.

PROBABILITY TABLE…
VALID THROUGH 700 AM CDT SATURDAY MAR 31.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA…30 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR…80 PERCENT.

OTHER HAZARDOUS WEATHER…
ANY SUPERCELL STORMS THAT FORM TODAY ARE PREDICTED TO HAVE A SLOW
SOUTHWARD MOVEMENT. LONG DURATION HEAVY RAINS MAY OCCUR OVER
ISOLATED LOCATIONS…RESULTING IN FLOODING.

.DAYS TWO THROUGH SEVEN…SATURDAY THROUGH THURSDAY…

THUNDERSTORM OUTLOOK…
AFTER A DRY WEEKEND…A CHANCE OF THUNDERSTORMS WILL RETURN ON
MONDAY AND TUESDAY. GIVEN THE TIME OF YEAR…SEVERE WEATHER MAY BE A
POSSIBILITY EARLY NEXT WEEK…BUT THE LEVEL OF RISK IS UNCERTAIN AT
THIS TIME.

OTHER HAZARDOUS WEATHER…
NONE.

Thank you for joining our conversation on Oklahoma Weather Blog. We encourage your discussion but ask that you stay within the bounds of our commenting and posting policy.