Tornado Warning 8, NWS Norman, OK

FPUS3 KOKC 061953
AFDOKC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
240 PM CDT WED MAY 6 1998

STORMS WILL CONTINUE TO DEVELOP NEAR A STATIONARY SURFACE BOUNDARY
THAT EXTENDS FROM A LOW OVER EAST CENTRAL CO THROUGH SOUTHWEST AND
EXTREME SOUTH CENTRAL KS. ANOTHER SURFACE LOW TO THE SOUTHEAST OF
CDS CONTINUES TO PULL MORE MOISTURE INTO WESTERN AND CENTRAL OK THIS
AFTERNOON. STORMS ARE ALSO DEVELOPING SOUTH OF THE KS BOUNDARY
ACROSS MUCH OF NORTHERN OK. THIS IS THE BEGINNING OF AN EVENT THAT WILL
PROBABLY LAST MUCH OF THE NIGHT, SUSTAINED BY THE APPROACH OF A COLD
FRONT TO THE NORTH AND A MID-LEVEL WAVE TO THE WEST. THE FRONT, FROM
NEAR LIC TO VTN TO GFK IS MAKING STEADY PROGRESS SOUTHEAST THIS
AFTERNOON. IT SHOULD ENTER NW OK LATE THIS EVENING AND PUSH TO
SOUTHEAST OK BY THURSDAY AFTERNOON. WARMER AIR ALOFT WILL CONTINUE TO WORK
AGAINST THUNDERSTORM DEVELOPMENT IN SOUTH CENTRAL AND SOUTHEAST OK,
ALTHOUGH A FEW STORMS ARE EXPECTED IN THOSE AREAS TONIGHT. DIRER
SURFACE AIR AND WARMER TEMPERATURES ALOFT WILL KEEP FAR SOUTHWEST
ZONES DRY.

THE COLD FRONT WILL PASS THROUGH OK WITH THE ASSOCIATED MID-LEVEL
WAVE TONIGHT, WHICH WILL HELP SUSTAIN STORMS IN THE NORTHERN HALF
OF THE STATE. AFTER THIS WAVE AND FRONT EXIT, SLIGHTLY DRIER AIR
WILL FILTER INTO MUCH OF OK. THE NEXT SYSTEM IS SETTING UP TO BE
BIGGER AND WILL BEGIN TO INFLUENCE OUR WEATHER ON FRIDAY. A
DEVELOPING MID-LEVEL STORM, SEVERAL HUNDRED MILES WEST OF THE
SOUTHERN CA COAST THIS AFTERNOO, WILL APPROACH THE SOUTHERN PLAINS
THURSDAY NIGHT. A STRONG SURFACE LOW IS LIKELY TO DEVELOP NEAR THE
TX PANHANDLE IN THE OLD STATIONARY TROUGH AREA. STRONG SOUTH WINDS
ON FRIDAY AND MID-LEVEL WINDS WILL LIKELY BRING A STRONG DRY LINE
INTO WESTERN OK AND WESTERN NORTH TX ON FRIDAY.  THIS SYSTEM SHOULD
MOVE OUT ON SATURDAY LEAVING THE REST OF THE WEEKEND DRY.

WR

FCSTID = 9
OKC   59  78  58  79 /  40  30   0  20
HBR   56  81  56  84 /  20  20   0  30
SPS   58  83  57  84 /  20  20   0  20
GAG   51  74  50  79 /  40   0   0  30
PNC   58  72  56  78 /  70  40   0  20
DUA   62  82  59  81 /  30  30  10  20

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

OKZ004>048-050>052-TXZ083>090-071130-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1230 PM CDT WED MAY 6 1998

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EARLY THIS EVENING OVER SOUTH CENTRAL AND SOUTHEASTERN OKLAHOMA TO
THE EAST AND SOUTH OF A LINE FROM MARIETTA TO SULPHUR TO
HOLDENVILLE. THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS
LATE THIS AFTERNOON AND OVERNIGHT IN CENTRAL AND NORTHERN OKLAHOMA
TO THE NORTH OF A LINE FROM CHEYENNE TO OKLAHOMA CITY TO HOLDENVILLE.

DISCUSSION...A STATIONARY FRONT FROM ARDMORE TO TULSA WILL MOVE
LITTLE THIS AFTERNOON. VERY MOIST AND UNSTABLE AIR IS LOCATED TO THE
EAST OF THIS FRONT OVER SOUTHEASTERN OKLAHOMA. AS TEMPERATURES RISE
THIS AFTERNOON...ISOLATED THUNDERSTORMS MAY DEVELOP AND PRODUCE
LARGE HAIL AND DAMAGING WINDS AS THEY MOVE SLOWLY EASTWARD. A FACTOR
AGAINST THUNDERSTORM DEVELOPMENT IN THIS AREA WILL BE A LAYER OF WARM
AIR ALOFT WHICH MAY ACT AS A CAP AND SUPPRESS THUNDERSTORMS.

SCATTERED THUNDERSTORMS HAVE BEEN DEVELOPING AND MOVING EASTWARD
OVER WESTERN AND SOUTHERN KANSAS TODAY. A FEW OF THE STORMS MAY
BECOME SEVERE LATER THIS AFTERNOON AS SUNSHINE WARMS THE LOWER
LAYERS OF THE ATMOSPHERE AND CREATES AN UNSTABLE ENVIRONMENT. THE
MAIN THREAT AREA FOR THIS ACTIVITY WILL BE OVER THE NORTHERN HALF OF
OKLAHOMA THIS AFTERNOON AND TONIGHT. LARGE HAIL WILL ONCE AGAIN BE
THE PRIMARY THREAT...AS CONDITIONS DO NOT APPEAR TO BE FAVORABLE
FOR TORNADO DEVELOPMENT.

OKZ004>048-050>052-TXZ083>090-071130-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1230 PM CDT WED MAY 6 1998

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EARLY THIS EVENING OVER SOUTH CENTRAL AND SOUTHEASTERN OKLAHOMA TO
THE EAST AND SOUTH OF A LINE FROM MARIETTA TO SULPHUR TO
HOLDENVILLE. THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS
LATE THIS AFTERNOON AND OVERNIGHT IN CENTRAL AND NORTHERN OKLAHOMA
TO THE NORTH OF A LINE FROM CHEYENNE TO OKLAHOMA CITY TO HOLDENVILLE.

DISCUSSION...A STATIONARY FRONT FROM ARDMORE TO TULSA WILL MOVE
LITTLE THIS AFTERNOON. VERY MOIST AND UNSTABLE AIR IS LOCATED TO THE
EAST OF THIS FRONT OVER SOUTHEASTERN OKLAHOMA. AS TEMPERATURES RISE
THIS AFTERNOON...ISOLATED THUNDERSTORMS MAY DEVELOP AND PRODUCE
LARGE HAIL AND DAMAGING WINDS AS THEY MOVE SLOWLY EASTWARD. A FACTOR
AGAINST THUNDERSTORM DEVELOPMENT IN THIS AREA WILL BE A LAYER OF WARM
AIR ALOFT WHICH MAY ACT AS A CAP AND SUPPRESS THUNDERSTORMS.

SCATTERED THUNDERSTORMS HAVE BEEN DEVELOPING AND MOVING EASTWARD
OVER WESTERN AND SOUTHERN KANSAS TODAY. A FEW OF THE STORMS MAY
BECOME SEVERE LATER THIS AFTERNOON AS SUNSHINE WARMS THE LOWER
LAYERS OF THE ATMOSPHERE AND CREATES AN UNSTABLE ENVIRONMENT. THE
MAIN THREAT AREA FOR THIS ACTIVITY WILL BE OVER THE NORTHERN HALF OF
OKLAHOMA THIS AFTERNOON AND TONIGHT. LARGE HAIL WILL ONCE AGAIN BE
THE PRIMARY THREAT...AS CONDITIONS DO NOT APPEAR TO BE FAVORABLE
FOR TORNADO DEVELOPMENT.

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
500 PM CDT WED MAY 6 1998

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

430 PM     FREEDOM                    OK   0.88 IN HAIL
05/06/98   WOODS

445 PM     6 S COVINGTON              OK   1.00 IN HAIL
05/06/98   GARFIELD

SC