Flash Flood Warning 11, NWS Tulsa, OK

AREA FORECAST DISCUSSION FOR EASTERN OKLAHOMA
NATIONAL WEATHER SERVICE TULSA OK
325 PM CDT SAT MAY 8 1993

WL KEEP WATCH AREA ISSUED EARLY THIS AFTN WITHOUT ADJUSTMENT BUT WL
EXTENDED INTO SUNDAY. HVY RAINS CONT TO MOVE ACROSS N CENT/NE OK AND WL
LIKELY SPREAD E DURING THE NIGHT. ECHOES LIKELY TO TRIAN ALONG OUTFLOW
BDRY FROM S OF TUL THRU CENT OK. WL MENTION CHC SVR S OF BDRY E OF WTCH
AREA AS AMS HAS BECOME QUITE UNSTABLE THIS AFTN. VRY SLOW PROGREESION OF
SYS STILL PROGGED BY MDLS. GUD DYNAMICS EXPECTED SUNDAY SO CUD BE QUITE
ACTIVE PARTICULALRLY IF SOME HTG CAN OCCUR SUN AFTN. WL HIGH POPS ACROSS
MOST OF AREA THRU SUN NIGHT AND KEEP 40 TO 50 POPS ACROSS AREA MON.

TUL 61/74/60/71 9765  M&LC 66/76/62/73 7785  BVO 59/73/55/68 9764
IDB 67/80/64/77 4575

...10...

.OK...FFA TONIGHT AND SUNDAY ZNS 026>031.

OKC035-105-131-081900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
101 PM CDT SAT MAY 8 1993

...STRONG THUNDERSTORM IN NORTHERN ROGERS COUNTY...

AT 1255 PM RADAR INDICATED A STRONG THUNDERSTORM IN NORTHERN ROGERS
COUNTY OVER OOLOGAH LAKE.  THE STORM WAS MOVING NORTH-NORTHEAST AT 35
MPH AND WILL TRACK ACROSS SOUTHEAST NOWATA COUNTY AND WESTERN CRAIG
COUNTY BETWEEN 1 AND 2 PM.  A BRIEF PERIOD OF VERY HEAVY RAIN...SMALL
HAIL AND@ GUSTY WINDS CAN BE EXPECTED WITH THE PASSAGE OF THE STORM.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THESE AREAS UNTIL 4PM.

STAY TUNED TO THIS STATION FOR FURTHER INFORMATION FROM THE NATIONAL
WEATHER SERVICE.

OKZ026>034-040-091200-

EASTERN OKLAHOMA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
130 PM CDT SAT MAY 8 1993

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MOST OF EASTERN OKLAHOMA
UNTIL 4 PM. THE ONLY COUNTIES NOT INCLUDED IN THIS WATCH ARE LATIMER...
LEFLORE AND MCCURTAIN.

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF EASTERN
OKLAHOMA THIS AFTERNOON AND TONIGHT.

AN OUTFLOW BOUNDARY EXTENDED FROM VINITA TO TULSA TO BRISTOW TO MIDWEST
CITY EARLY THIS AFTERNOON AND HAD BECOME NEARLY STATIONARY. TO THE
SOUTH OF THIS BOUNDARY...THE AIRMASS HAS BECOME EXTREMELY UNSTABLE AS
TEMPERATURES HAVE WARMED INTO THE MID 70S TO LOWER 80S. TO THE NORTH OF
THE BOUNDARY...SHOWERS AND THUNDERSTORMS WERE WIDESPREAD AND
TEMPERATURES WERE IN THE UPPER 50S TO LOWER 60S.

THE OUTFLOW BOUNDARY IS NOT EXPECTED TO MOVE MUCH FARTHER SOUTH THIS
AFTERNOON AND MAY EVEN MOVE SLOWLY NORTH. THUNDERSTORMS ARE EXPECTED TO
DEVELOP AND INTENSIFY ALONG AND SOUTH OF THIS BOUNDARY THIS AFTERNOON.
THE EXTREME INSTABILITY SUGGESTS THAT STORMS WILL QUICKLY BECOME
SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THE VERTICAL WIND
PROFILE IS ALSO QUITE FAVORABLE FOR A FEW STRONG DAMAGING TORNADOES
THIS AFTERNOON AND TONIGHT ACROSS EASTERN OKLAHOMA.

AS THUNDERSTORMS BECOME MORE NUMEROUS BY THIS EVENING...THE OUTFLOW
BOUNDARY WILL LIKELY BEGIN MOVING BACK TO THE SOUTH. IF THIS OCCURS...
THE MAIN SEVERE WEATHER THREAT WILL SHIFT INTO SOUTHEAST OKLAHOMA BY
LATER TONIGHT. FLASH FLOODING IS ALSO A POSSIBILITY THIS AFTERNOON AND
TONIGHT AS SOME AREAS MAY RECEIVE SEVERAL PERIODS OF THUNDERSTORMS. THE
POTENTIAL EXISTS FOR SOME LOCATIONS TO RECEIVE AS MUCH AS 4 INCHES OF
RAIN THIS AFTERNOON AND TONIGHT. THIS AMOUNT OF RAINFALL WILL LIKELY
RESULT IN FLASH FLOODING OF LOW LYING AREAS.

EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTERS ARE EXPECTED TO BE
ACTIVATED THIS AFTERNOON AND TONIGHT.

STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
150 PM CDT SAT MAY 08 1993

TIME (CDT)      COUNTY       EVENT

830 AM          OSAGE        TELEPHONE POLES BLOWN DOWN, ONE SHED
                             DESTROYED, AND NUMEROUS TREE LIMBS DOWNED
                             5 MILES WEST OF GRAINOLA IN EXTREME
                             NORTHWEST OSAGE COUNTY.