Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 302, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 28, 1997, 4:47 PM CDT for Osage County, Oklahoma. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 28, 1997, 4:47 PM CDT (21:47 UTC)
- Expired
- Jul 28, 1997, 5:15 PM CDT
- In force
- 28 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Osage County, OK
The radar
The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 21:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lamont, OK (KLMN), launched 12:00Z, 9.8 hours before the alert went out and 97 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1055 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1186 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 282146 SVRTUL OKC113-282215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 447 PM CDT MON JUL 28 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...EASTERN OSAGE COUNTY AT 447 PM...RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES EAST OF PAWHUSKA. MOVEMENT WAS TO THE EAST AT 20 MPH. THIS STORM WILL AFFECT AREAS NEAR OKESA AND WOOLAROC MUSEUM. HAIL TO THE SIZE OF _____ AND WIND GUSTS TO ___ MPH CAN BE EXPECTED IN THE WARNED AREA. DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE OR HAND HELD ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY. MOTORISTS SHOULD BE ALERT FOR WATER ON ROADWAYS AND NEVER DRIVE ONTO A FLOODED ROAD. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 28, 3:11 PM CDT, 1 hour 36 minutes earlier.
Area forecast discussion, Jul 28, 3:11 PM CDT, 1 hour 36 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 310 PM CDT MON JUL 28 1997 A BIG CHANGE IS ON THE WAY AS MUCH COOLER AIR MOVES INTO THE AREA FOR THE NEXT COUPLE DAYS. SFC TROF NOW NUDGING INTO THE FAR NW PART OF THE FCST AREA WITH THE MAIN COLD FRONT APPEARING TO EXTEND FROM CENTRAL KS INTO THE OK PANHANDLE. TSTMS ARE BEGINNING TO DEVELOP ALONG THE SFC TROF AND THIS DEVELOPMENT SHOULD CONTINUE OVER THE NEXT SEVERAL HOURS. THE SFC TROF AND COLD FRONT SHOULD BOTH CONTINUE SOUTH OVERNIGHT WITH THE COLD FRONT LIKELY HANGING UP AT LEAST TEMPORARILY ACROSS OUR AREA DURING THE DAY TUESDAY. HOWEVER STRONG SFC HIGH BUILDING INTO THE UPPER MIDWEST SHOULD TRY AND NUDGE THE FRONT DOWN AT LEAST INTO FAR SE OK TUESDAY NIGHT AND WEDNESDAY. SHOWERS AND TSTMS SHOULD BECOME WIDESPREAD NORTH OF THE SFC TROF OVERNIGHT TONIGHT AND CONTINUE THROUGH THE DAY TUESDAY. EXPECT THE ACTIVITY TO FOCUS ALONG A BAROCLINIC ZONE ALL THE MODELS SHOW FROM SRN KS ACROSS NE OK INTO FAR NW AR LATER TONIGHT THROUGH THE DAY TUESDAY. THIS AXIS WILL LIKELY SEE WIDESPREAD SHOWERS AND TSTMS PERSIST THROUGH MOST OF THE DAY TUESDAY WHICH WILL HOLD TEMPS DOWN. BY LATE IN THE DAY TUESDAY...THE ACTIVITY TO THE NORTH SHOULD WEAKEN AND THE MAIN EMPHASIS SHOULD SHIFT SOUTH INTO SE OK/WEST CENTRAL AR. MODELS REALLY NEVER DRY OUT THE AIRMASS ACROSS THE AREA THROUGH WEDNESDAY EXCEPT MAYBE IN CARROLL COUNTY ARKANSAS SO WILL CONTINUE WITH CHANCE POPS IN ALL AREAS TUESDAY NIGHT AND WEDNESDAY. SOME DRIER AIR SHOULD FILTER INTO AT LEAST NW AR AND NE OK BY WEDNESDAY NIGHT ENDING THE CHANCE OF RAIN BY THAT TIME. THE NGM MOS TEMPS HAVE NO CLUE ON THE CLOUDS/PRECIP WHICH WILL BE OCCURRING TUESDAY AND ARE MUCH TOO WARM. THEY ALSO LOOK TOO WARM TUESDAY NIGHT AND WEDNESDAY WITH THE AVN MOS TEMPS LOOKING MUCH MORE REALISTIC. AVN MOS POPS LOOK BEST AS WELL. FCSTID = 5 TUL 72 82 70 83 / 60 70 40 30 FSM 75 89 70 85 / 40 70 50 30 MLC 75 90 73 86 / 30 60 50 40 BVO 70 77 67 83 / 80 80 30 30 FYV 71 78 66 82 / 80 80 30 20 IDB 73 95 72 89 / 20 50 60 40 BYV 69 75 64 81 / 80 80 20 20 MIO v 70 74 66 81 / 80 80 40 20 MKO 74 86 71 85 / 50 70 40 30 F10 74 85 71 84 / 50 70 50 30 .TUL... OK...NONE. AR...NONE. PLATE
In the hours before
Special weather statement, Jul 28, 1:00 PM CDT, 3 hours 47 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-291200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT MON JUL 28 1997 NO SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON OR TONIGHT OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A SURFACE BOUNDARY EXTENDING FROM SOUTHEAST KANSAS INTO NORTH CENTRAL OKLAHOMA AT MIDDAY WILL VERY SLOWLY PROGRESS SOUTHEASTWARD INTO NORTHEAST OKLAHOMA BY LATE THIS AFTERNOON. SOUTH OF THE BOUNDARY A WARM...HUMID AIRMASS REMAINS IN PLACE...WHILE COOLER... LESS HUMID AIR LINGERS NORTH OF THE BOUNDARY. ALOFT...AN UPPER- LEVEL RIDGE WILL REMAIN IN PLACE OVER THE REGION THROUGH TONIGHT. WARM AIR ASSOCIATED WITH THIS RIDGE WILL RESULT IN ONLY MARGINALLY UNSTABLE CONDITIONS DESPITE THE WARM AND HUMID AIRMASS AT THE SURFACE. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THE AFTERNOON HEAT SOUTH OF THE SURFACE BOUNDARY...MAINLY OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ANY STORMS THAT DO DEVELOP MAY PRODUCE BRIEF HEAVY DOWNPOURS...BUT WILL GENERALLY BE WEAK AND SHORT-LIVED. MORE SIGNIFICANT THUNDERSTORM DEVELOPMENT WILL OCCUR NEAR THE SURFACE BOUNDARY ALONG THE KANSAS BORDER LATE THIS AFTERNOON. CONVERGENCE ALONG THIS BOUNDARY WILL ALLOW STORMS TO CONTINUE INTO THE EVENING AND OVERNIGHT HOURS AS THE BOUNDARY SLOWLY MOVES ACROSS NORTHEAST OKLAHOMA AND INTO NORTHWEST ARKANSAS. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY RAINFALL...BUT SOME OF THEM MAY PRODUCE BRIEF GUSTY WINDS. WEAK WIND FIELDS AND LIMITED INSTABILITY SHOULD KEEP THE STORMS BELOW SEVERE LIMITS. SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...BUT EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS SHOULD CONTINUE TO MONITOR THIS STATION FOR THE MOST RECENT WEATHER INFORMATION.
Special weather statement, Jul 28, 1:11 PM CDT, 3 hours 36 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-291200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT MON JUL 28 1997 NO SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON OR TONIGHT OVER EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. A SURFACE BOUNDARY EXTENDING FROM SOUTHEAST KANSAS INTO NORTH CENTRAL OKLAHOMA AT MIDDAY WILL VERY SLOWLY PROGRESS SOUTHEASTWARD INTO NORTHEAST OKLAHOMA BY LATE THIS AFTERNOON. SOUTH OF THE BOUNDARY A WARM...HUMID AIRMASS REMAINS IN PLACE...WHILE COOLER... LESS HUMID AIR LINGERS NORTH OF THE BOUNDARY. ALOFT...AN UPPER- LEVEL RIDGE WILL REMAIN IN PLACE OVER THE REGION THROUGH TONIGHT. WARM AIR ASSOCIATED WITH THIS RIDGE WILL RESULT IN ONLY MARGINALLY UNSTABLE CONDITIONS DESPITE THE WARM AND HUMID AIRMASS AT THE SURFACE. WIDELY SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP IN THE AFTERNOON HEAT SOUTH OF THE SURFACE BOUNDARY...MAINLY OVER SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. ANY STORMS THAT DO DEVELOP MAY PRODUCE BRIEF HEAVY DOWNPOURS...BUT WILL GENERALLY BE WEAK AND SHORT-LIVED. MORE SIGNIFICANT THUNDERSTORM DEVELOPMENT WILL OCCUR NEAR THE SURFACE BOUNDARY ALONG THE KANSAS BORDER LATE THIS AFTERNOON. CONVERGENCE ALONG THIS BOUNDARY WILL ALLOW STORMS TO CONTINUE INTO THE EVENING AND OVERNIGHT HOURS AS THE BOUNDARY SLOWLY MOVES ACROSS NORTHEAST OKLAHOMA AND INTO NORTHWEST ARKANSAS. THE MAIN THREAT WITH THESE STORMS WILL BE LOCALLY HEAVY RAINFALL...BUT SOME OF THEM MAY PRODUCE BRIEF GUSTY WINDS. WEAK WIND FIELDS AND LIMITED INSTABILITY SHOULD KEEP THE STORMS BELOW SEVERE LIMITS. SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...BUT EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS SHOULD CONTINUE TO MONITOR THIS STATION FOR THE MOST RECENT WEATHER INFORMATION.
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.