Severe Thunderstorm Warning 592, NWS Norman, OK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1125 AM CDT THU SEP 20 2001

VERY BUSY MORNING AS CONVECTION CONT TO DEVELOP ACROSS THE AREA DUE
TO WAA AND INCREASING SUPPORT FROM UPPER WAVE MOVING OUT OF SRN
ROCKIES INTO W TX AND OK. OTHERWISE MOST UPDATES WILL BE BASED ON
WHAT CURRENTLY IS GOING ON AND DISCUSSION ON WHAT IS EXPECTED FOR
LATER TODAY. UPDATES TO BE OUT SHORLTY.

30

.OUN...
OK...NONE.
TX...NONE.

OKZ004>048-050>052-TXZ083>090-201400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
700 AM CDT THU SEP 20 2001

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT OVER MUCH OF CENTRAL AND WESTERN OKLAHOMA... AND WESTERN
NORTH TEXAS.  THE SLIGHT RISK AREA IS GENERALLY NORTHWEST OF A LINE
FROM HOLDENVILLE OKLAHOMA TO DAVIS TO HENRIETTA TEXAS.  LARGE HAIL
WILL BE THE PRIMARY THREAT... AND DAMAGING WINDS WILL BE POSSIBLE.

A COLD FRONT IS FORECAST TO MOVE INTO NORTHWEST OKLAHOMA LATE THIS
AFTERNOON OR EARLY THIS EVENING.  A CLUSTER OF STRONG TO SEVERE
THUNDERSTORMS SHOULD FORM AHEAD OF THIS FRONT LATE THIS AFTERNOON...
THEN CONTINUE TO MOVE AND EXPAND EASTWARD ACROSS MUCH OF NORTHWEST
AND NORTH-CENTRAL OKLAHOMA.  THIS WILL BE THE AREA OF THE GREATEST
THREAT.  LARGE HAIL AND DAMAGING THUNDERSTORM WINDS WILL BE THE
PRIMARY THREATS WITH THESE STORMS.  THE STORMS MAY EXTEND SOUTH OF
THIS AREA AND COULD AFFECT THE REMAINDER OF CENTRAL AND WESTERN
OKLAHOMA... AS WELL AS THE WICHITA FALLS AREA IN TEXAS.  THE RISK OF
SEVERE WEATHER IS EXPECTED TO DIMINISH OVERNIGHT AS THE STORMS MOVE
INTO A LESS-FAVORABLE ENVIRONMENT OVER SOUTHEASTERN OKLAHOMA.

OTHER THUNDERSTORMS ARE LIKELY TO BE SCATTERED ACROSS OKLAHOMA AND
NORTH TEXAS THROUGHOUT THE DAY.  ALTHOUGH NO WIDESPREAD... ORGANIZED
SEVERE STORMS ARE EXPECTED UNTIL AT LEAST LATE AFTERNOON... A FEW OF
THE EARLIER STORMS MAY PRODUCE LARGE HAIL AND GUSTY WINDS.

ALL THE STORMS WILL BE CAPABLE OF PRODUCING VERY HEAVY RAIN.  SINCE
THE GROUND IS RELATIVELY MOIST AFTER RECENT WIDESPREAD RAIN... SOME
LOCALIZED AREAS OF FLOODING WILL BE POSSIBLE.

EMERGENCY MANAGERS AND STORM SPOTTERS IN THE SLIGHT RISK AREA SHOULD
CONTINUE TO MONITOR FORECASTS AND BE PREPARED FOR ACTIVATION THIS
AFTERNOON OR EVENING.

CMS

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
923 AM CDT THU SEP 20 2001

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0510 AM    OKLAHOMA CITY             OK   1.00 INCH HAIL
09/20/01   OKLAHOMA                       NW EXPRESSWAY AND PORTLAND
                                          RELAYED VIA EM MNGR.

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1018 AM CDT THU SEP 20 2001

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0515 AM    7 NE EL RENO              OK   WIND DAMAGE
09/20/01   CANADIAN                       6 INCH DIAMETER SYCAMORE
                                          LIMBS DOWNED...PUBLIC
                                          REPORT

FM

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1112 AM CDT THU SEP 20 2001

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1053 AM    8 E MARLAND               OK   .75 INCH HAIL
09/20/01   NOBLE                          PUBLIC REPORT

FM