Severe Thunderstorm Warning 337, NWS Norman, OK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OKLAHOMA
315 PM CDT SUN MAY 29 1994

SEEMS LIKE LOTS OF THINGS COMING TOGETHER FOR POTENTIAL SUPERCELLS IN
FAR SW OK AND THE WRN PTNS OF N TX...JUST W OR NW OF SPS. LIFTED INDEX
VALUES IN THE -10 TO -12 RANGE...LINE OF TOWERING HARD CU ALONG
INTERSECTING BOUNDRIES IN THIS AREA AND GOOD BACKED LOW LVL FLOW. STORMS
WL LIKELY MV SLOWLY SEWRD INTO N TX THIS EVENING. OTHER TRW DVLPMNT PSBL
ALONG TROF LINE FROM FM HARMON COUNTY NEWRD TO NR KINGFISHER. WL INCLUDE
CHC POPS SE OF THIS LINE UNTIL ABOUT MIDNIGHT. ANY STRMS TNGHT CD BE SVR
WITH THE GREATEST THREAT IN THE WRN PART OF N TX AND IN FAR SW OK...WL
WORD ACCORDINGLY.

AFTER TNGHT...LOOKS LIKE WARMING MID LVL TEMPS...UPR HIGH BLDG INTO THE
AREA AND SINKING MOTION SD KEEP TRW FROM FORMING THROUGH WED DESPITE WK
SFC FNT MVG THRU THE AREA. VERY WARM ON MEMORIAL DAY AND FEW DEGREES
COOLER MOST SECTIONS ON TUESDAY AND WEDNESDAY. WL GO CLOSER TO COOLER
FPC THRU THE FCST. CD SEE SOME FOG AROUND LATE TNGHT IN NRN AND PTNS
OF CNTRL ZONES (PLACES THAT GOT DECENT RAINFALL LAST NIGHT).

WL INCLUDE SLGT CHC POPS FOR THURS AND FRI IN THE EXTENDED...BUT NOT
TOO CONFIDENT. HV SERIOUS DOUBTS ABOUT HIGH POPS AND THE RELATIVELY COOL
TEMPS IN THE EXTENDED FROM NMC TDY.

FIRST GUESS NMBRS:

HBR   66  94  66  90 / 10  10  10  10
OKC   66  89  66  86 / 30  10  10  10
SPS   65  94  66  90 / 30  10  10  10
GAG   61  92  61`  88 / 10  10  10  10
PNC   65  90  64  86 / 10  10  10  10
DUA   68  88  70  88 / 40  10  10  10

.OKC...NONE.
.TX...NONE.

25 (MTE)

OKZ004>053-TXZ083>090-292000-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1235 PM CDT SUN MAY 29 1994

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT ACROSS THE WESTERN HALF OF OKLAHOMA AND THE WESTERN PART OF
NORTH TEXAS. THE SLIGHT RISK AREA IS GENERALLY WEST OF A LINE FROM
ENID... TO OKLAHOMA CITY... TO LAKE TEXOMA.

THE BEST CHANCE FOR SEVERE THUNDERSTORMS WITHIN THE SLIGHT RISK AREA
WILL BE IN SOUTHWEST OKLAHOMA AND WESTERN PART OF NORTH TEXAS.

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON IN THE
WESTERN PORTIONS OF OKLAHOMA AND NORTH TEXAS. SOME OF THE THUNDERSTORMS
MAY MOVE INTO CENTRAL SECTIONS OF OKLAHOMA THIS EVENING. LARGE HAIL...
DAMAGING WINDS... AND ISOLATED TORNADOES WILL BE POSSIBLE WITH THE MOST
INTENSE STORMS.

THUNDERSTORMS THAT OCCURRED LAST NIGHT AND THIS MORNING HAVE GENERATED
AN OUTFLOW BOUNDARY THAT EXTENDED FROM ALTUS TO NEAR ARCHER CITY AT
MIDDAY. THE BOUNDARY WILL SERVE AS A POSSIBLE FOCUS FOR THE DEVELOPMENT
OF STRONG THUNDERSTORMS DURING THE AFTERNOON. MEANWHILE... THE AIRMASS
IS EXPECTED TO BECOME VERY UNSTABLE IN SOUTHWEST OKLAHOMA AND THE
WESTERN PART OF NORTH TEXAS DURING THE AFTERNOON.

VERTICAL WIND PROFILES ARE EXPECTED TO BE ADEQUATE FOR THE DEVELOPEMENT
OF SUPERCELL THUNDERSTORMS... ESPECIALLY IF THE THUNDERSTORM BOUNDARIES
ARE MAINTAINED THROUGH THE AFTERNOON.

AN AREA OF WEAK SURFACE CONVERGENCE IN NORTHWEST OKLAHOMA MAY ALSO HELP
TO TRIGGER SCATTERED STRONG THUNDERSTORMS THIS AFTERNOON AND EVENING.

PERSONS ENGAGED IN OUTDOOR ACTIVITIES THIS HOLIDAY WEEKEND SHOULD KEEP
ABREAST OF DEVELOPING WEATHER CONDITIONS... AND AVOID BEING CAUGHT IN
EXPOSED OPEN AREAS... SUCH AS LAKES... DURING A THUNDERSTORM.

SPOTTER ACTIVATIONS MAY BE REQUIRED THIS AFTERNOON IN WESTERN PORTIONS
OF OKLAHOMA AND NORTH TEXAS... AND LATER THIS EVENING IN PORTIONS OF
CENTRAL OKLAHOMA.

CS

OKZ004>053-TXZ083>090-292000-

THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1235 PM CDT SUN MAY 29 1994

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT ACROSS THE WESTERN HALF OF OKLAHOMA AND THE WESTERN PART OF
NORTH TEXAS. THE SLIGHT RISK AREA IS GENERALLY WEST OF A LINE FROM
ENID... TO OKLAHOMA CITY... TO LAKE TEXOMA.

THE BEST CHANCE FOR SEVERE THUNDERSTORMS WITHIN THE SLIGHT RISK AREA
WILL BE IN SOUTHWEST OKLAHOMA AND WESTERN PART OF NORTH TEXAS.

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON IN THE
WESTERN PORTIONS OF OKLAHOMA AND NORTH TEXAS. SOME OF THE THUNDERSTORMS
MAY MOVE INTO CENTRAL SECTIONS OF OKLAHOMA THIS EVENING. LARGE HAIL...
DAMAGING WINDS... AND ISOLATED TORNADOES WILL BE POSSIBLE WITH THE MOST
INTENSE STORMS.

THUNDERSTORMS THAT OCCURRED LAST NIGHT AND THIS MORNING HAVE GENERATED
AN OUTFLOW BOUNDARY THAT EXTENDED FROM ALTUS TO NEAR ARCHER CITY AT
MIDDAY. THE BOUNDARY WILL SERVE AS A POSSIBLE FOCUS FOR THE DEVELOPMENT
OF STRONG THUNDERSTORMS DURING THE AFTERNOON. MEANWHILE... THE AIRMASS
IS EXPECTED TO BECOME VERY UNSTABLE IN SOUTHWEST OKLAHOMA AND THE
WESTERN PART OF NORTH TEXAS DURING THE AFTERNOON.

VERTICAL WIND PROFILES ARE EXPECTED TO BE ADEQUATE FOR THE DEVELOPEMENT
OF SUPERCELL THUNDERSTORMS... ESPECIALLY IF THE THUNDERSTORM BOUNDARIES
ARE MAINTAINED THROUGH THE AFTERNOON.

AN AREA OF WEAK SURFACE CONVERGENCE IN NORTHWEST OKLAHOMA MAY ALSO HELP
TO TRIGGER SCATTERED STRONG THUNDERSTORMS THIS AFTERNOON AND EVENING.

PERSONS ENGAGED IN OUTDOOR ACTIVITIES THIS HOLIDAY WEEKEND SHOULD KEEP
ABREAST OF DEVELOPING WEATHER CONDITIONS... AND AVOID BEING CAUGHT IN
EXPOSED OPEN  AREAS... SUCH AS LAKES... DURING A THUNDERSTORM.

SPOTTER ACTIVATIONS MAY BE REQUIRED THIS AFTERNOON IN WESTERN PORTIONS
OF OKLAHOMA AND NORTH TEXAS... AND LATER THIS EVENING IN PORTIONS OF
CENTRAL OKLAHOMA.

CS

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
449 PM CDT SUN MAY 29 1994

TIME/DATE             COUNTY            EVENT/LOCATION

445 PM               WICHITA            NICKEL SIZE HAIL IN SOUTHERN
                                        SECTIONS OF WICHITA FALLS

02

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LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
449 PM CDT SUN MAY 29 1994

TIME/DATE             COUNTY            EVENT/LOCATION

445 PM               WICHITA            NICKEL SIZE HAI&L IN SOUTHERN
                                        SECTIONS OF WICHITA FALLS

02