Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 224, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 3, 1997, 6:33 PM CDT for Osage County, Oklahoma. It was in force for 57 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 3, 1997, 6:33 PM CDT (23:33 UTC)
- Expired
- Jul 3, 1997, 7:30 PM CDT
- In force
- 57 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 23:34 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 3, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.6 hours before the alert went out and 181 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
- 1487 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 989 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- -16 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 032333 RRA SVRTUL OKC113-040030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 633 PM CDT THU JUL 3 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...NORTHERN OSAGE COUNTY AT 630 PM...RADAR INDICATED A SEVERE THUNDERSTORM CENTERED 3 MILES NORTHEAST OF GRAINOLA. THE STORM WAS MOVING SOUTHEAST AT 15 MILES AN HOUR. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 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 TH,E 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 3, 2:12 PM CDT, 4 hours 21 minutes earlier.
Area forecast discussion, Jul 3, 2:12 PM CDT, 4 hours 21 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 210 PM CDT THU JUL 3 1997 18Z SURFACE MAP SHOWS LOW PRESSURE OVER SOUTHWEST AND SOUTH CENTRAL KANSAS WITH A BOUNDARY EXTENDING FROM EAST CENTRAL KANSAS INTO THE OKLAHOMA PANHANDLE. ETA AND NGM IN FAIR AGREEMENT THAT THAT THE LOW WILL MOVE EAST AND PHASE WITH THE FRONT AS FRONT PUSHES SOUTHEAST IN RESPONSE TO CENTRAL PLAINS SHORTWAVE. HIGH PRESSURE WILL BUILD INTO THE AREA FOR TOMORROW AND SATURDAY BRINGING DRY WEATHER AND SEASONABLY COOL TEMPERATURES. THUNDERSTORMS EXPECTED TO DEVELOP ALONG BOUNDARY IN SOUTHEAST KANSAS LATE THIS AFTERNOON AND PUSH SOUTHEAST INTO NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS THIS EVENING AS THE FRONT PROGRESSES. SOME SEVERE STORMS POSSIBLE AS WINDS FIELDS WILL BE RELATIVELY STRONG FOR THIS TIME OF YEAR AND LARGE CAPE WILL REMAIN IN PLACE. MAIN THREAT WILL BE DAMAGING WINDS AND LARGE HAIL BUT PER SPC OUTLOOK WIND FIELD MAY SUPPORT ISOLATED SUPERCELLS. WILL GO LESSER CHANCES AND LEAVE OUT MENTION FOR SEVERE FOR SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS AS DYNAMICS WILL BE WELL TO THE NORTH...THE FRONT WILL ARRIVE WELL AFTER DARK AND CAP MAY BE STRONGER. GOING FORECAST HANDLES THE SITUATION WELL AND PROBABLY WILL NOT MAKE MANY CHANGES. FWC NUMBERS LOOK REASONABLE AND PROBABLY WILL ONLY TWEAK SLIGHTLY. TUL 065/085 063/087 064 5000 FSM 070/086 063/087 064 3000 MLC 070/086 063/088 065 3000 BVO 063/084 061/086 062 5000 FYV 065/081 056/082 059 5000 IDB 073/088 065/088 066 2200 BYV 065/080 055/082 058 5000 .TUL... OK...NONE. AR...NONE. ABBAS
In the hours before
Special weather statement, Jul 3, 1:00 PM CDT, 5 hours 33 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUL 3 1997 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON THROUGH EARLY TONIGHT OVER NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS GENERALLY NORTH OF INTERSTATE 40... AT 100 PM...A SURFACE LOW PRESSURE SYSTEM WAS LOCATED OVER SOUTHWEST KANSAS WITH A COLD FRONT EXTENDING FROM THE LOW INTO THE OKLAHOMA AND TEXAS PANHANDLES. MEANWHILE...A WARM FRONT EXTENDED EAST FROM THE LOW THROUGH SOUTHEAST KANSAS INTO SOUTHWEST MISSOURI. WITH ABUNDANT LOW LEVEL MOISTURE IN PLACE AND TEMPERATURES IN THE 90S...THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE LATE THIS AFTERNOON. THE ATMOSPHERE WILL REMAINED CAPPED THROUGH MUCH OF THE AFTERNOON PROHIBITING THUNDERSTORM DEVELOPMENT. HOWEVER...THE COMBINATION OF COOLER TEMPERATURES ALOFT AND CONVERGENCE ALONG THE FRONT WILL GRADUALLY WEAKEN THE CAP BY LATE AFTERNOON OR EARLY EVENING. THE SURFACE LOW IS EXPECTED TO MOVE INTO SOUTHEAST KANSAS LATE THIS AFTERNOON WITH THE COLD FRONT MOVING INTO NORTHWEST OKLAHOMA. INITIAL THUNDERSTORM DEVELOPMENT IS EXPECTED ALONG AND NEAR THE SURFACE LOW AND FRONT OVER SOUTH CENTRAL OR SOUTHEAST KANSAS BETWEEN 4 AND 6 PM. THIS ACTIVITY MAY FORM INTO A THUNDERSTORM COMPLEX AND MOVE WITH THE COLD FRONT INTO NORTHEAST OKLAHOMA EARLY THIS EVENING...THEN INTO NORTHWEST ARKANSAS AND EAST CENTRAL OKLAHOMA AFTER 9 OR 10 PM. LARGE HAIL AND STRONG DAMAGING WINDS WILL BE THE PRIMARY THREAT...HOWEVER THE VERTICAL WIND PROFILES FORECAST OVER THE AREA WOULD INDICATE THE POTENTIAL FOR ROTATING STORMS AND POSSIBLY A FEW TORNADOES ESPECIALLY DURING THE EARLY EVENING. THE THREAT OF SEVERE WEATHER SHOULD DIMINISH ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AFTER 2 AM AS THE COLD FRONT MOVES SOUTH AND EAST OF THE AREA. SCATTERED THUNDERSTORMS ARE POSSIBLE SOUTH OF INTERSTATE 40 MAINLY AFTER MIDNIGHT...BUT THEY ARE NOT EXPECTED TO BE SEVERE. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS OVER NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION LATER TODAY THROUGH EARLY TONIGHT.
Special weather statement, Jul 3, 1:02 PM CDT, 5 hours 31 minutes before
ARZ001-002-010-011-019-029-OKZ054>076-041200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT THU JUL 3 1997 ...A FEW SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON THROUGH EARLY TONIGHT OVER NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS GENERALLY NORTH OF INTERSTATE 40... AT 100 PM...A SURFACE LOW PRESSURE SYSTEM WAS LOCATED OVER SOUTHWEST KANSAS WITH A COLD FRONT EXTENDING FROM THE LOW INTO THE OKLAHOMA AND TEXAS PANHANDLES. MEANWHILE...A WARM FRONT EXTENDED EAST FROM THE LOW THROUGH SOUTHEAST KANSAS INTO SOUTHWEST MISSOURI. WITH ABUNDANT LOW LEVEL MOISTURE IN PLACE AND TEMPERATURES IN THE 90S...THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE LATE THIS AFTERNOON. THE ATMOSPHERE WILL REMAINED CAPPED THROUGH MUCH OF THE AFTERNOON PROHIBITING THUNDERSTORM DEVELOPMENT. HOWEVER...THE COMBINATION OF COOLER TEMPERATURES ALOFT AND CONVERGENCE ALONG THE FRONT WILL GRADUALLY WEAKEN THE CAP BY LATE AFTERNOON OR EARLY EVENING. THE SURFACE LOW IS EXPECTED TO MOVE INTO SOUTHEAST KANSAS LATE THIS AFTERNOON WITH THE COLD FRONT MOVING INTO NORTHWEST OKLAHOMA. INITIAL THUNDERSTORM DEVELOPMENT IS EXPECTED ALONG AND NEAR THE SURFACE LOW AND FRONT OVER SOUTH CENTRAL OR SOUTHEAST KANSAS BETWEEN 4 AND 6 PM. THIS ACTIVITY MAY FORM INTO A THUNDERSTORM COMPLEX AND MOVE WITH THE COLD FRONT INTO NORTHEAST OKLAHOMA EARLY THIS EVENING...THEN INTO NORTHWEST ARKANSAS AND EAST CENTRAL OKLAHOMA AFTER 9 OR 10 PM. LARGE HAIL AND STRONG DAMAGING WINDS WILL BE THE PRIMARY THREAT...HOWEVER THE VERTICAL WIND PROFILES FORECAST OVER THE AREA WOULD INDICATE THE POTENTIAL FOR ROTATING STORMS AND POSSIBLY A FEW TORNADOES ESPECIALLY DURING THE EARLY EVENING. THE THREAT OF SEVERE WEATHER SHOULD DIMINISH ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AFTER 2 AM AS THE COLD FRONT MOVES SOUTH AND EAST OF THE AREA. SCATTERED THUNDERSTORMS ARE POSSIBLE SOUTH OF INTERSTATE 40 MAINLHY AFTER MIDNIGHT...BUT THEY ARE NOT EXPECTED TO BE SEVERE. EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS OVER NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION LATER TODAY THROUGH EARLY TONIGHT.
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.