Severe Thunderstorm Warning 310, NWS Norman, OK

OKZ013-014-015-231600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1007 AM CDT THU MAY 23 1991

AT 1007 AM... RADAR INDICATED STRONG THUNDERSTORMS IN NORTHEAST
CANADIAN COUNTY AND NORTHWEST OKLAHOMA COUNTY MOVING SOUTHEAST AT 25
MPH. THE STORMS WILL BE MOVING THROUGH THE YUKON AND BETHANY AREAS
THROUGH 11 AM. VERY HEAVY RAIN... SMALL HAIL AND WIND GUSTS TO 45 MPH
ARE POSSIBLE WITH THESE STORMS.

THE STORMS WERE PART OF PA LARGER COMPLEX OF STORMS EXTENDING FROM
GUTHRIE... SOUTHWEST TO LAWTON.

OKZ004-005-006-007-010-011-012-013-014-015-016-018-231600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1044 AM CDT THU MAY 23 1991

AT 1044 AM... RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING
FROM EDMOND... TO NORMAN... TO DUNCAN. THE STORMS WERE MOVING EAST
SOUTHEAST AT 25 MPH. THE STRONGEST STORMS EXTENDED FROM EDMOND TO
NORMAN. HEAVY RAIN... SMALL HAIL... AND WIND GUSTS TO 45 MPH ARE
POSSIBLE WITH THESE STORM2S.

OTHER THUNDERSTORMS WERE IN NORTH CENTRAL OKLAHOMA BETWEEN PONCA CITY
AND STILLWATER... AND IN NORTHWEST OKLAHOMA NEAR FORT SUPPLY.

OKZ012-013-015-018-019-231700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1137 AM CDT THU MAY 23 1991

LOCALLY HEAVY RAIN HAS FALLEN OVER PORTIONS OF SOUTHWEST OKLAHOMA
DURING THE MORNING WITH OVER TWO INCHES OF RAINFALL REPORTED IN SOME
AREAS. CARS HAVE BEEN REPORTED STRANDED IN SOME OF THE POOR DRAINAGE
AREAS IN LAWTON.

AT 1135 AM... RADAR INDICATED SHOWERS AND THUNDERSTORMS... SOME WITH
HEAVY RAIN... CONTINUING OVER SOUTHWEST OKLAHOMA SOUTHEAST OF A LINE
FROM FREDERICK... TO CACHE... TO FORT COBB. THE HEAVIEST RAIN WAS
OCCURRING ACROSS STEPHENS COUNTY AND SOUTHERN COMANCHE COUNTY.
MOVEMENT OF THE THUNDERSTORMS WAS TO THE EAST AT 15 MPH.

MOTORISTS SHOULD NOT ATTEMPT TO CROSS ROADWAYS COVERED WITH RAPIDLY
FLOWING WATER. LOW WATER CROSSINGS CAN ALSO BECOME EXTREMELY
HAZARDOUS.

OKZ004>021-241200-

OKLAHOMA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1245 PM CDT THU MAY 23 1991

THIS THUNDERSTORM OUTLOOK IS VALID ONLY FOR OKLAHOMA ZONES 4 THROUGH
21. A THUNDERSTORM OUTLOOK FOR THE OKLAHOMA AND TEXAS PANHANDLES IS
AVAILABLE UNDER LBBSPSAMA...AND A THUNDERSTORM OUTLOOK FOR EASTERN
OKLAHOMA IS AVAILABLE UNDER OKCSPSTUL.

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS WESTERN AND
CENTRAL OKLAHOMA THIS AFTERNOON AND TONIGHT. THE SLIGHT RISK AREA COVERS
THAT PORTION OF OKLAHOMA WEST OF A LINE FROM PONCA CITY...TO HOLDENVILLE
TO DURANT.

AT EARLY AFTERNOON AN OUTFLOW BOUNDARY OF RAIN-COOLED AIR FROM MORNING
THUNDERSTORM ACTIVITY WAS LOCATED FROM NEAR CHILDRESS TEXAS...EASTWARD
ALONG THE RED RIVER INTO SOUTHERN OKLAHOMA NEAR ADA. A WEAK TROUGH OF
LOW PRESSURE WAS LOCATED FROM WESTERN KANSAS INTO NORTHWEST OKLAHOMA
NEAR GAGE. THE AIR NEAR THE SURFACE REMAINS VERY MOIST WHILE IN THE MID
AND UPPER LEVELS OF THE ATMOSPHERE THE AIR WAS MUCH COOLER AND DRIER
CREATING AN ENVIRONMENT FAVORABLE FOR THUNDERSTORM DEVELOPMENT.

THUNDERSTORMS WERE ALREADY IN PROGRESS NEAR THE LOW PRESSURE TROUGH IN
NORTHWEST OKLAHOMA AND NEAR THE OUTFLOW BOUNDARY ACROSS THE SOUTH. AS
AFTERNOON HEATING CONTINUES THE ATMOSPHERE WILL DESTABILIZE FURTHER
ALLOWING A FEW OF THE THUNDERSTORMS TO REACH SEVERE LIMITS. ALTHOUGH
THUNDERSTORMS WILL BE MOST CONCENTRATED NEAR THE OUTFLOW BOUNDARY
AND LOW PRESSURE TROUGH...WIDELY SCATTERED THUNDERSTORMS MAY ALSO
DEVELOP ACROSS THE REMAINDER OF WESTERN AND CENTRAL OKLAHOMA THIS
AFTERNOON.

THUNDERSTORMS WILL ALSO DEVELOP ACROSS THE TEXAS PANHANDLE THIS
AFTERNOON AND MOVE EASTWARD INTO WESTERN AND CENTRAL OKLAHOMAk THIS
EVENING AND TONIGHT. A FEW OF THESE STORMS MAY BE SEVERE AS AN UPPER
LEVEL TROUGH OF LOW PRESSURE APPROACHES OKLAHOMA FROM THE SOUTHWEST.