Flash Flood Warning 9, NWS Norman, OK

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
245 PM CDT WED MAY 27 1987

...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTHWEST ONE-THIRD OF
                    OKLAHOMA FOR TODAY...

AT 225 PM... AN EXTENSIVE AREA OF RAIN AND SCATTERED THUNDERSTORMS...
SOME WITH VERY HEAVY RAINFALL... COVERED MOST OF THE NORTHWEST TWO-
THIRDS OF OKLAHOMA AND SOUTH CENTRAL KANSAS. MOST OF THIS ACTIVITY
WAS WEST OF A LINE FROM CHANUTE KANSAS SOUTHWEST TO BARTLESVILLE...
STROUD... PAULS VALLEY AND JEFFERSON COUNTY OKLAHOMA.

THE HEAVIEST ACTIVITY WAS LOCATED OVER MOST OF GRADY... CANADIAN...
OKLAHOMA AND STEPHENS COUNTY. RADAR INDICATES THAT RAINFALL AMOUNTS
OF ONE TO TWO INCHES HAVE OCCURRED OVER MUCH OF CENTRAL OKLAHOMA...
INCLUDING THE OKLAHOMA CITY METRO AREA. OVER TWO INCHES OF RAIN HAS
FALLEN AT THE W,ILL ROGERS WORLD AIRPORT IN THE PAST TWO HOURS.

THE AREA OF THUNDERSTORMS WAS DRIFTING TO THE EAST AT 5 MILES AN
HOUR WHILE THE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST
AT 25 MILES AN HOUR.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
250 PM CDT WED MAY 27 1987

...A TORNADO WATCH IS IN EFFECT FROM 3 PM CDT THIS AFTERNOON UNTIL
10 PM CDT THIS EVENING AND INCLUDES THE FOLLOWING COUNTIES IN NORTH
CENTRAL TEXAS...ARCHER..BAYLOR..FOARD..HARDEMAN..KNOX..WICHITA..
WILBARGER..AND YOUNG...

AT 245 PM THE WICHITA FALLS RADAR SHOWED AN AREA OF NUMEROUS SHOWERS
AND SCATTERED VERY STRONG THUNDERSTORMS STRETCHED 40 TO 45 MILES EITHER
SIDE OF A LINE FROM SEYMOUR TEXAS TO WATONGA OKLAHOMA.

THE STRONGEST STORMS IN NORTHCENTRAL TEXAS WERE SCATTERED OVER THE
SOUTHERN HALF OF WICHITA COUNTY AND OVER THE NORTHWESTERN ONE HALF OF
ARCHER COUNTY. THUNDERSTORMS WITHIN THESE AREAS ARE CAPABLE OF PRODUCING
VERY HEAVY RAINS...DANGEROUS LIGHTNING...STRONG WINDS AND SMALL HAIL.
STORMS WERE MOVING TO THE NORTHEAST AT 25 MPH.

ELSEWHERE VERY STRONG THUNDERSTORMS WERE DEVELOPING OVER THE SOUTH
PLAINS FROM PADUCAH TO CLAIREMONT.

RESIDENTS ACROSS THE AREA ARE ADVISED TO STAY ABREAST OF THIS
AFTERNOONS WEATHER DUE TO THE POTENTIAL OF SEVERE WEATHER ACROSS
THE REGION.

OKLAHOMA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
320 PM CDT TUE MAY 26 1987

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT FOR PORTIONS OF SOUTHWEST OKLAHOMA...SPECIFICALLY...THAT AREA
SOUTHWEST OF A SAYRE - DURANT LINE. THERE IS A SLIGHT RISK OF SEVERE
THUNDERSTORMS THROUGH TONIGHT OVER MUCH OF WESTERN...CENTRAL...AND
NORTHEAST OKLAHOMA. THIS AREA COVERS THAT PORTION OF OKLAHOMA NORTHWEST
OF A FORT SMITH AR - DURANT OK LINE...BUT DOES NOT INCLUDE THE OKLAHOMA
PANHANDLE.

AT MIDAFTERNOON...AN STRONG UPPER LEVEL STORM SYSTEM IS CENTERED OVER
THE NORTHERN ROCKIES. UPPER LEVEL DISTURBANCES ARE ROTATING AROUND THE
STORM...WITH ONE OF THESE DISTURBANCES PASSING ACROSS OKLAHOMA THIS
AFTERNOON. IN RESPONSE TO THE UPPER LEVEL DISTURBANCE AND THE PRESENCE
OF MOIST UNSTABLE AIR...AN AREA OF SHOWERS AND THUNDERSTORMS CURRENTLY
COVERS MUCH OF WESTERN AND CENTRAL OKLAHOMA. AN OUTFLOW BOUNDARY
PRODUCED BY THIS THUNDERSTORM ACTIVITY CURRENTLY EXTENDS FROM NEAR
BARTLESVILLE TO PURCELL TO WICHITA FALLS TX...THEN CONTINUES WESTWARD
INTO WEST TEXAS. A DRYLINE EXTENDS NORTH-SOUTH IN WEST TEXAS AND
CONTINUES TO PUNCH EASTWARD. THE DRYLINE AND OUTFLOW BOUNDARY INTERSECT
BETWEEN LUBBOCK AND AMARILLO TX.

THE BEST CHANCE FOR SEVERE ACTIVITY NOW APPEARS TO BE IN SOUTHWEST
OKLAHOMA. THUNDERSTORMS HAVE BEGUN TO DEVELOP ALONG BOTH THE DRYLINE
AND THE OUTFLOW BOUNDARY IN TEXAS. THE INTERSECTION OF THE DRYLINE AND
OUTFLOW BOUNDARY MAY ACT AS A FOCUS FOR SEVERE WEATHER DEVELOPMENT.
THE INTERSECTION POINT IS EXPECTED TO MOVE SLOWLY EASTWARD TOWARD
SOUTHWEST OKLAHOMA...AS THE DRYLINE PUSHES TO THE EAST. IN ADDITION...
THE OUTFLOW BOUNDARY OVER NORTHWEST TEXAS IS EXPECTED TO START MOVING
SLOWLY NORTHWARD...TOWARD OKLAHOMA. ALL THESE FACTORS POINT TOWARD
SOUTHWEST OKLAHOMA AS HAVING THE BEST CHANCE FOR SEVERE ACTIVITY...
AND THAT PORTION OF THE STATE HAS BEEN UPGRADED TO MODERATE RISK.

BECAUSE MOIST AND VERY UNSTABLE AIR COVERS MUCH OF THE STATE...
ISOLATED SEVERE ACTIVITY IS POSSIBLE IN THE SLIGHT RISK AREA THAT
COVERS MOST OF THE STATE. IN THE SLIGHT RISK AREA...THE BEST CHANCE
FOR SEVERE WEATHER IS NEAR THE OUTFLOW BOUNDARY.

THE FORMS OF SEVERE WEATHER WILL LIKELY BE HAIL UP TO GOLFBALL SIZE AND
STRONG DAMAGING WIND GUSTS WITH THE HEAVIEST STORMS...ALONG WITH
TORRENTIAL RAINFALL. IN THE MODERATE RISK AREA OF SOUTHWEST OKLAHOMA...
THE VERTICAL WIND STRUCTURE OF THE MATMOSPHERE IS MORE FAVORABLE...AND
ONE OR TWO TORNADOES MAY ALSO DEVELOP IN THAT AREA.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
345 PM CDT WED MAY 27 1987

...A TORNADO WATCH IS IN EFFECT FOR WICHITA THE SURROUNDING COUNTIES
UNTIL 10 PM CDT THIS EVENING...

AT 340 PM CDT THE WICHITA FALLS NATIONAL WEATHER SERVICE RADAR SHOWED
NUMEROUS SHOWERS AND SCATTERED VERY STRONG THUNDERSTORMS SOME 35 TO 40
MILES EITHER SIDE OF A LINE FROM SWENSON TEXAS TO WALTERS OKLAHOMA
TO OKARCHE OKLAHOMA.

THE STRONGEST STORMS IN TEXAS WERE LOCATED NEAR CROWELL AND TO THE
SOUTH OF CHILLICOTHE. THESE STORMS ARE PRODUCING VERY HEAVY RAIN
AND DANGEROUS LIGHTNING AND COULD ALSO PRODUCE GUSTY SURFACE WINDS
AND SMALL HAIL. MOVEMENT OF THESE STORMS WAS TO THE NORTHEAST AT 25 MPH.

OTHER STRONG STORMS WERE LOCATED NEAR LAKE KEMP AND TO THE WEST OF SEYMOUR.

ADDITIONAL STATEMENTS WILL BE ISSUED THROUGHOUT THE AFTERNOON.

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
345 PM CDT WED MAY 27 1987

...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTHWEST ONE-THIRD OF
                    OKLAHOMA FOR TODAY...

AT 325 PM... AN EXTENSIVE AREA OF RAIN AND SCATTERED THUNDERSTORMS...
SOME WITH VERY HEAVY RAINFALL... COVERED MOST OF THE CENTRAL ONE-
THIRD OF OKLAHOMA AND SOUTH CENTRAL KANSAS. MOST OF THIS ACTIVITY WAS
WEST OF A LINE FROM CHANUTE KANSAS SOUTHWEST TO TULSA... SHAWNEE...
PAULS VALLEY AND JEFFERSON COUNTY OKLAHOMA.

THE HEAVIEST ACTIVITY WAS LOCATED OVER MOST OF GRADY... CANADIAN...
OKLAHOMA NORTHERN MCCLAIN AND NORTHWEST CLEVEjLAND COUNTY.

THE AREA OF THUNDERSTORMS WAS DRIFTING TO THE EAST AT 5 MILES AN HOUR
WHILE THE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES
AN HOUR.

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
440 PM CDT WED MAY 27 1987

...A FLASH FLOOD WATCH IS IN EFFECT FOR THE NORTHWEST ONE-THIRD OF
                    OKLAHOMA FOR TODAY...

AT 434 PM... A LARGE AREA OF RAIN AND SCATTERED THUNDERSTORMS...SOME
WITH HEAVY RAINFALL COVERED NORTH CENTRAL...CENTRAL AND SOUTH CENTRAL
OKLAHOMA.  THE STRONG THUNDERSTORMS WERE NORTHEAST OF OKLAHOMA CITY
AND TO THE SOUTHWEST.  OTHER PATCHES OF RAIN HAD DEVLOPED TO THE
EAST BETWEEN TULSA AND MCALESTER.

SLIGHTLY OVER 3 INCHES OF RAIN HAS OCCURRED IN THE OKLAHOMA CITY AREA
DURING THE PAST 4 HOURS.

THE AREA OF THUNDERSTORMS WAS DRIFTING TO THE EAST AT 5 MILES AN HOUR
WHILE THE INDIVIDUAL THUNDERSTORMS WERE MOVING NORTHEAST AT 25 MILES
AN HOUR.