628 WWUS84 KOUN 031206 SPSOKC OKZ004>048-050>052-TXZ083>090-031600- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 705 AM CDT THU MAY 3 2001 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS... SOUTHWEST OF A LINE FROM REYDON... TO LAWTON... TO WICHITA FALLS... TO WINDTHORST. LARGE HAIL WILL BE THE MAIN THREAT. HEAVY RAINFALL ALSO IS POSSIBLE THROUGH TONIGHT ACROSS WESTERN NORTH TEXAS AND THE WESTERN QUARTER OF OKLAHOMA. AN UPPER LEVEL LOW PRESSURE SYSTEM IS DEVELOPING THIS MORNING OVER SOUTHERN UTAH. THIS SYSTEM WILL REMAIN WELL TO THE WEST OF THE AREA THROUGH FRIDAY... BUT WILL DRIVE SEVERAL WEAKER DISTURBANCES NORTHEAST ACROSS THE REGION TODAY AND TONIGHT. AT THE SURFACE... A NEARLY STATIONARY FRONT WILL CONTINUE ACROSS NORTHERN AND WESTERN OKLAHOMA...EXTENDING SOUTHWEST INTO WEST CENTRAL TEXAS. THE FRONT MAY DRIFT SLOWLY NORTH... TOWARD OR INTO THE TEXAS PANHANDLE...LATER TODAY. PERIODS OF SHOWERS AND THUNDERSTORMS WILL BE LIKELY TODAY AND TONIGHT AS THE DISTURBANCES ALOFT INTERACT WITH ABUNDANT LOW AND MID LEVEL MOISTURE OVER THE AREA... AND WITH THE FRONT ACROSS NORTHWEST OKLAHOMA. THUNDERSTORMS WILL BE MOST LIKELY OVER WESTERN OKLAHOMA AND WESTERN NORTH TEXAS. SHOWERS AND THUNDERSTORMS LAST NIGHT AND THIS MORNING HAVE LEFT CLOUDY SKIES OVER A LARGE PART OF THE SOUTHERN PLAINS. AS A RESULT... THE AIR MASS OVER THE REGION MAY BE SLOW TO RECOVER DURING THE DAY. BREAKS ARE EXPECTED IN THE CLOUD COVER LATER TODAY... MOST LIKELY ACROSS SOUTHWEST OKLAHOMA AND NORTH CENTRAL TEXAS. RESULTING SUNSHINE WILL ALLOW ENOUGH HEATING FOR THE LOW LEVELS TO DESTABILIZE. THEREFORE...ISOLATED SEVERE THUNDERSTORMS WITH LARGE HAIL WILL BE POSSIBLE IN THESE AREAS. THUNDERSTORMS ARE LIKELY TO MOVE RELATIVELY SLOWLY... AND THUS MAY RESULT IN HEAVY RAINFALL. LOCALIZED FLOODING COULD OCCUR ACROSS PARTS OF WESTERN OKLAHOMA AND NORTH TEXAS...ESPECIALLY IF HEAVY RAIN FALLS ON AREAS WHERE THE GROUND WAS SATURATED BY HEAVY RAIN LAST NIGHT. THE MAIN UPPER SYSTEM WILL BEGIN MOVING EAST LATE FRIDAY... AND WILL MOVE INTO THE AREA ON SATURDAY. THE CHANCE OF THUNDERSTORMS... INCLUDING POSSIBLE SEVERE WEATHER AND LOCALLY HEAVY RAIN...WILL CONTINUE UNTIL THE SYSTEM MOVES EAST OF THE AREA SATURDAY NIGHT OR SUNDAY. && IF SKIES CLEAR OVER A LARGER PART OF OKLAHOMA... THE SLIGHT RISK AREA COULD BE EXPANDED LATER TODAY TO INCLUDE A LARGER PART OF WESTERN OR CENTRAL OKLAHOMA. EMERGENCY MANAGERS AND SPOTTER GROUPS IN SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS SHOULD BE PREPARED FOR POSSIBLE SEVERE WEATHER OPERATIONS AT ANY TIME THROUGH TONIGHT. SPOTTER GROUPS IN THE REST OF WESTERN AND CENTRAL OKLAHOMA SHOULD LISTEN FOR LATER UPDATES THROUGHOUT THE DAY. THERE ALSO IS A CHANCE THAT ADDITIONAL SEVERE WEATHER OPERATIONS WILL BE NEEDED IN THESE AREAS FRIDAY INTO SATURDAY. 24  628 WWUS84 KOUN 031206 SPSOKC OKZ004>048-050>052-TXZ083>090-031600- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORMAN OK 705 AM CDT THU MAY 3 2001 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT ACROSS SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS... SOUTHWEST OF A LINE FROM REYDON... TO LAWTON... TO WICHITA FALLS... TO WINDTHORST. LARGE HAIL WILL BE THE MAIN THREAT. HEAVY RAINFALL ALSO IS POSSIBLE THROUGH TONIGHT ACROSS WESTERN NORTH TEXAS AND THE WESTERN QUARTER OF OKLAHOMA. AN UPPER LEVEL LOW PRESSURE SYSTEM IS DEVELOPING THIS MORNING OVER SOUTHERN UTAH. THIS SYSTEM WILL REMAIN WELL TO THE WEST OF THE AREA THROUGH FRIDAY... BUT WILL DRIVE SEVERAL WEAKER DISTURBANCES NORTHEAST ACROSS THE REGION TODAY AND TONIGHT. AT THE SURFACE... A NEARLY STATIONARY FRONT WILL CONTINUE ACROSS NORTHERN AND WESTERN OKLAHOMA...EXTENDING SOUTHWEST INTO WEST CENTRAL TEXAS. THE FRONT MAY DRIFT SLOWLY NORTH... TOWARD OR INTO THE TEXAS PANHANDLE...LATER TODAY. PERIODS OF SHOWERS AND THUNDERSTORMS WILL BE LIKELY TODAY AND TONIGHT AS THE DISTURBANCES ALOFT INTERACT WITH ABUNDANT LOW AND MID LEVEL MOISTURE OVER THE AREA... AND WITH THE FRONT ACROSS NORTHWEST OKLAHOMA. THUNDERSTORMS WILL BE MOST LIKELY OVER WESTERN OKLAHOMA AND WESTERN NORTH TEXAS. SHOWERS AND THUNDERSTORMS LAST NIGHT AND THIS MORNING HAVE LEFT CLOUDY SKIES OVER A LARGE PART OF THE SOUTHERN PLAINS. AS A RESULT... THE AIR MASS OVER THE REGION MAY BE SLOW TO RECOVER DURING THE DAY. BREAKS ARE EXPECTED IN THE CLOUD COVER LATER TODAY... MOST LIKELY ACROSS SOUTHWEST OKLAHOMA AND NORTH CENTRAL TEXAS. RESULTING SUNSHINE WILL ALLOW ENOUGH HEATING FOR THE LOW LEVELS TO DESTABILIZE. THEREFORE...ISOLATED SEVERE THUNDERSTORMS WITH LARGE HAIL WILL BE POSSIBLE IN THESE AREAS. THUNDERSTORMS ARE LIKELY TO MOVE RELATIVELY SLOWLY... AND THUS MAY RESULT IN HEAVY RAINFALL. LOCALIZED FLOODING COULD OCCUR ACROSS PARTS OF WESTERN OKLAHOMA AND NORTH TEXAS...ESPECIALLY IF HEAVY RAIN FALLS ON AREAS WHERE THE GROUND WAS SATURATED BY HEAVY RAIN LAST NIGHT. THE MAIN UPPER SYSTEM WILL BEGIN MOVING EAST LATE FRIDAY... AND WILL MOVE INTO THE AREA ON SATURDAY. THE CHANCE OF THUNDERSTORMS... INCLUDING POSSIBLE SEVERE WEATHER AND LOCALLY HEAVY RAIN...WILL CONTINUE UNTIL THE SYSTEM MOVES EAST OF THE AREA SATURDAY NIGHT OR SUNDAY. && IF SKIES CLEAR OVER A LARGER PART OF OKLAHOMA... THE SLIGHT RISK AREA COULD BE EXPANDED LATER TODAY TO INCLUDE A LARGER PART OF WESTERN OR CENTRAL OKLAHOMA. EMERGENCY MANAGERS AND SPOTTER GROUPS IN SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS SHOULD BE PREPARED FOR POSSIBLE SEVERE WEATHER OPERATIONS AT ANY TIME THROUGH TONIGHT. SPOTTER GROUPS IN THE REST OF WESTERN AND CENTRAL OKLAHOMA SHOULD LISTEN FOR LATER UPDATES THROUGHOUT THE DAY. THERE ALSO IS A CHANCE THAT ADDITIONAL SEVERE WEATHER OPERATIONS WILL BE NEEDED IN THESE AREAS FRIDAY INTO SATURDAY. 24