Severe Thunderstorm Warning 29, NWS Tulsa, OK

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EASTERN OKLAHOMA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
140 PM CDT SAT APR 11 1992

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS EASTERN OKLAHOMA THROUGH
TONIGHT.

AT EARLY AFTERNOON A COLD FRONT EXTENDED FROM CENTRAL MISSOURI TO A LOW
PRESSURE SYSTEM IN EXTREME SOUTHWEST OKLAHOMA.  STRONG TO SEVERE THUNDERSTORMS
HAVE ALREADY DEVELOPED ALONG THE FRONT FROM EAST-CENTRAL KANSAS TO WESTERN
MISSOURI DUE TO THE APPROACH OF AN UPPER-LEVEL DISTURBANCE NOW OVER SOUTHWEST
KANSAS AND WESTERN OKLAHOMA.  A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR
MUCH OF SOUTHEAST KANSAS AND PARTS OF SOUTHWESTERN MISSOURI UNTIL 5PM.

THE COLD FRONT IS EXPECTED TO BE NEAR A LINE FROM JOPLIN MISSOURI TO NEAR
OKLAHOMA CITY AT 7PM AND SHOULD LIE ACROSS SOUTHEAST OKLAHOMA BY MORNING.
THE ATMOSPHERE AHEAD OF THE COLD FRONT OVER SOUTHEAST KANSAS...SOUTHWEST
MISSOURI AND NORTHEAST OKLAHOMA HAS BECOME MODERATELY UNSTABLE AND SHOULD
CONTINUE TO DESTABILIZE AS TEMPERATURES ACROSS THIS AREA WARM INTO THE LOW AND
MID 80S.

THE THUNDERSTORMS NOW OCCURRING IN PARTS OF EASTERN KANSAS AND WESTERN
MISSOURI WILL CONTINUE TO HAVE SEVERE POTENTIAL AS THEY MOVE SOUTHEAST THIS
AFTERNOON AND ARE LIKELY TO BUILD SOUTHWESTWARD WITH TIME.  THESE
THUNDERSTORMS MAY BEGIN TO AFFECT EXTREME NORTHEAST OKLAHOMA BETWEEN 5PM AND
7PM THIS EVENING.  A FEW STRONG TO SEVERE THUNDERSTORMS ARE LIKELY ACROSS
NORTHEAST OKLAHOMA EARLY TONIGHT AS THE FRONT CONTINUES SOUTHWARD.  THE STORMS
ARE EXPECTED TO WEAKEN AROUND 10PM AS THEY MOVE TOWARD SOUTHEAST OKLAHOMA.

WHILE THE GREATEST THREAT OF SEVERE THUNDERSTORMS THROUGH TONIGHT WILL BE
ACROSS NORTHEAST OKLAHOMA...THERE IS SOME POTENTIAL THAT THE THUNDERSTORM
ACTIVITY MAY REDEVELOP ACROSS SOUTHEAST OKLAHOMA LATE TONIGHT AS THE FRONT
ENCOUNTERS A FAVORABLE UPPER LEVEL WIND FLOW AND A WEAK UPPER DISTURBANCE
MOVES INTO THAT AREA.

MID AND UPPER LEVEL WINDS FIELDS ARE WEAK ACROSS OKLA|HOMA AND AS A RESULT THE
GREATEST THREAT FROM THESE THUNDERSTORMS WILL BE LARGE HAIL AND STRONG WINDS.

SPOTTERS IN EASTERN OKLAHOMA SHOULD BE READY FOR ACTIVATION THIS EVENING AND
TONIGHT.

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
455 PM CDT SAT APR 11 1992

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM FOR MUCH OF
NORTHEAST OKLAHOMA...

AT 450 PM NATIONAL WEATHER SERVICE RADAR AT TULSA SHOWED A VERY STRONG
THUNDERSTORM DEVELOPING RAPIDLY IN NORTHERN OSAGE COUNTY OVER THE HULAH
RESERVOIR. THIS THUNDERSTORM WAS SHOWING VERY LITTLE MOVEMENT AT THE
PRESENT TIME. SMALL HAIL AND GUSTY WINDS ARE POSSIBLE WITH THIS STORM
ALONG WITH VERY HEAVY RAINFALL.

OTHER STRONG TO SEVERE THUNDERSTORMS WERE OVER SOUTHEAST KANSAS. THE
INDIVIDUAL THUNDERSTORMS WERE SHOWING LITTLE MOVEMENT BUT AS EACH
INDIVIDUAL STORM BEGINS TO WEAKEN...NEW STORMS DEVELOP FURTHER SOUTH SO
THE NET MOVEMENT OF THE KANSAS THUNDERSTORMS WERE TO THE SOUTH AT
AROUND 25 MILES AN HOUR. THESE THUNDERSTORMS SHOULD DEVELOP SOUTH INTO
NORTHEAST OKLAHOMA BEFORE 6 PM THIS EVENING.

ALL PERSONS IN NORTHEAST OKLAHOMA SHOULD KEEP ABREAST OF THE LATEST
WEATHER DEVELOPMENTS THIS EVENING AND BE PREPARED TO SEEK SAFE INDOOR
SHELTER IF THREATENING WEATHER APPROACHES.

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