Tornado Warning 37, NWS Norman, OK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
430 PM CDT SAT MAY 8 1993

VRY ACTV SVR WX THIS AFTN PRECLUDING MUCH FCST DISC. WL CONT WITH FFA
FOR MOST OF FCST AREA XPCT FOR NWRN OK. SVR WX AND MAJOR HVY RN PRBLMS
TO PERSIST INTO EVE.

32

.OK...FFA ZNS 6>21 TNGT
.TX...FFA TNGT ZNS 76 77

OKZ004>021-TXZ076-TXZ077-081930-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1240 PM CDT SAT MAY 8 1993

SEVERE THUNDERSTORM WATCH NUMBER 228 IS IN EFFECT UNTIL 4 PM FOR MUCH
OF SOUTHWESTERN AND CENTRAL OKLAHOMA AND THE WESTERN PART OF NORTH
TEXAS.

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT ACROSS SOUTHERN AND CENTRAL OKLAHOMA AND THE WESTERN PART OF
NORTH TEXAS...GENERALLY SOUTHEAST OF A REYDON TO STILLWATER LINE.
SOME CITIES INCLUDED IN THE MODERATE RISK AREA ARE OKLAHOMA CITY...
LAWTON...ALTUS...ELK CITY...CLINTON....WEATHERFORD...ARDMORE...
DURANT...ADA...SEMINOLE AND HUGO IN OKLAHOMA AND WICHITA FALLS...
VERNON...CROWELL AND SEYMOUR IN THE WESTERN PART OF NORTH TEXAS.

THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND TONIGHT IN NORTHERN OKLAHOMA...TO THE NORTH OF THE MODERATE RISK
AREA.

VERY MOIST AND UNSTABLE AIR PREVAILED ACROSS SOUTHERN AND PORTIONS OF
CENTRAL OKLAHOMA AND NORTH TEXAS EARLY THIS AFTERNOON....TO THE SOUTH
OF AN NEARLY STATIONARY OUTFLOW BOUNDARY WHICH EXTENDED FROM NEAR
QUANAH TEXAS TO LAWTON TO MIDWEST CITY TO STROUD. TO THE NORTH OF THIS
BOUNDARY...SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WERE
OCCURRING.

THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON AND TONIGHT ALONG
THE OUTFLOW BOUNDARY AND MOVE NORTHEASTWARD. OTHER THUNDERSTORMS
WILL LIKELY DEVELOP ALONG A DRYLINE IN WEST TEXAS AND MOVE INTO
SOUTHWEST OKLAHOMA AND THE WESTERN PORTIONS OF NORTH TEXAS LATE THIS
AFTERNOON AND TONIGHT. SOME THUNDERSTORMS ALONG AND SOUTH OF THE OUTFLOW
BOUNDARY WILL BECOME SEVERE...PRODUCING VERY LARGE HAIL AND STRONG
DAMAGING WINDS. SOME OF THESE STORMS COULD BECOME SUPERCELLS AND HAVE
THE POTENTIAL TO PRODUCE DAMAGING TORNADOES.

OTHER SEVERE THUNDERSTORMS ARE POSSIBLE NORTH OF THE OUTFLOW BOUNDRY
AS WARM MOIST UNSTABLE AIR IS LIFTED OVER THE BOUNDARY. LARGE HAIL AND
STRONG DAMAGING WINDS AND ISOLATED TORNADOES ARE POSSIBLE IN THIS AREA.
HOWEVER...THE MAIN THREAT NORTH OF THE OUTFLOW BOUNDARY IS FLASH
FLOODING WITH THE POSSIBILITY OF SEVERAL INCHES OF RAIN IN A SHORT
PERIOD OF TIME.

THE OUTFLOW BOUNDRY AND THE SIGNIFICANT FLASH FLOOD THREAT IS EXPECTED
TO SHIFT SLOWLY SOUTHWARD LATER THIS AFTERNOON OR TONIGHT.

STORM SPOTTERS SHOULD BE PREPARED FOR ACTIVATION THIS AFTERNOON AND
TONIGHT...ESPECIALLY IN THE MODERATE RISK AREA.

LOCAL STORM REPORT...OCRRECTION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
343 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

255     PM          JACKSON          TENNIS BALL SIZE HAIL 1 MILE NORTH
                                     OF ALTUS

323     PM          WILBARGER        TENNIS BALL SIZE HAIL 5 TO 6 MILES
                                     EAST-SOUTHEAST OF GRAYBECK

327     PM          JACKSON          TENNIS BALL SIZE HAIL 2 MILES
                                     WEST OF ALTUS

330     PM          LOGAN            HWY 77 SOUTH IN GUTHRIE CLOSED DUE
                                     TO HIGH WATER        T

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
420 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

240     PM          GRADY            DIME SIZE HAIL IN CHICKASHA

355     PM          KIOWA            GOLFBALL SIZE HAIL IN ROOSEVELT

355     PM          OKLAHOMA         DIME SIZE HAIL COVERING ROAD AT
                                     PENN AND BRITTON

355     PM          ARCHER           GOLFBALL SIZE HAIL IN HOLLIDAY

355     PM          OKLAHOMA         QUARTER SIZE HAIL IN OKLAHOMA CITY

400     PM          WICHITA          GOLFBALL SIZE HAIL 4 MILES NORTH OF
                                     HOLLIDAY

400     PM          ARCHER           QUARTER SIZE HAIL IN NORTHERN
                                     PART OF THE COUNTY

401     PM          MCCLAIN/GRADY    1-INCH HAIL 6 MILES WEST OF
                                     NEWCASTLE ON GRADY - MCCLAIN COUNTY
                                     LINE

405     PM          WICHITA          NICKEL SIZE HAIL IN WICHITA FALLS

410     PM          WICHITA          GOLFBALL SIZE HAIL AT THE STADIUM
                                     IN WICHITA FALLS

415     PM          JACKSON          BASEBALL SIZE 4 MILES SOUTH OF
                                     ALTUS

LOCAL STORM REPORT...OCRRECTION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
420 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

240     PM          GRADY            DIME SIZE HAIL IN CHICKASHA

355     PM          KIOWA            GOLFBALL SIZE HAIL IN ROOSEVELT

355     PM          OKLAHOMA         DIME SIZE HAIL COVERING ROAD AT
                                     PENN AND BRITTON

355     PM          ARCHER           GOLFBALL SIZE HAIL IN HOLLIDAY

355     PM          OKLAHOMA         QUARTER SIZE HAIL IN OKLAHOMA CITY

400     PM          WICHITA          GOLFBALL SIZE HAIL 4 MILES NORTH OF
                                     HOLLIDAY

400     PM          ARCHER           QUARTER SIZE HAIL IN NORTHERN
                                     PART OF THE COUNTY

401     PM          MCCLAIN/GRADY    1-INCH HAIL 6 MILES WEST OF
                                     NEWCASTLE ON GRADY - MCCLAIN COUNTY
                                     LINE

405     PM          WICHITA          NICKEL SIZE HAIL IN WICHITA FALLS

410     PM          WICHITA          GOLFBALL SIZE HAIL AT THE STADIUM
6                                     IN WICHITA FALLS

415     PM          JACKSON          BASEBALL SIZE 4 MILES SOUTH OF
                                     ALTUS

LOCAL STORM REPORT...OCRRECTION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
500 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

429     PM          JACKSON          QUARTER SIZE HAIL AT ALTUS AIR
                                     FORCE BASE

434     PM          OKLAHOMA         DIME SIZE HAIL AT WILL ROGERS
                                     AIRPORT

440     PM          CLAY/ARCHER      GOLFBALL SIZE HAIL ON HWY 1954 ON
                    TEXAS            COUNTY LINE
440     PM          CLAY, TEXAS      NICKEL SIZE HAIL IN JOLLY

443     PM          GRADY            QUARTER SIZE HAIL IN TUTTLE

448     PM          CLAY, TEXAS      QUARTE>R SIZE IN JOLLY

449     PM          OKLAHOMA         3/4 INCH HAIL AT WILL ROGER AIRPORT

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
500 PM CDT SAT MAY 8 1993

TIME                COUNTY           EVENT

429     PM          JACKSON          QUARTER SIZE HAIL AT ALTUS AIR
                                     FORCE BASE

434     PM          OKLAHOMA         DIME SIZE HAIL AT WILL ROGERS
                                     AIRPORT

440     PM          CLAY/ARCHER      GOLFBALL SIZE HAIL ON HWY 1954 ON
                    TEXAS            COUNTY LINE
440     PM          CLAY, TEXAS      NICKEL SIZE HAIL IN JOLLY

443     PM          GRADY            QUARTER SIZE HAIL IN TUTTLE

448     PM          CLAY, TEXAS      QUARTER SIZE IN JOLLY

449     PM          OKLAHOMA         3/4 INCH HAIL AT WILL ROGER AIRPORT