Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 231, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 3, 1997, 9:06 PM CDT for Delaware County, Ottawa County, Oklahoma. It was in force for 69 min. 11 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 3, 1997, 9:06 PM CDT (02:06 UTC)
- Expired
- Jul 3, 1997, 10:15 PM CDT
- In force
- 69 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Delaware County, OK, Ottawa County, OK
The radar
The Tulsa radar (KINX), 84 km from the middle of the area, began a volume at 02:10 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 3, 9:12 PM CDT | Thunderstorm Wind 59 | Bernice, OK | |
| Jul 3, 9:14 PM CDT | Thunderstorm Wind 56 | Cleora, OK | |
| Jul 3, 9:15 PM CDT | Thunderstorm Wind 52 | Bernice, OK | |
| Jul 3, 9:15 PM CDT | Thunderstorm Wind | Grove, OK | |
| Jul 3, 9:20 PM CDT | Thunderstorm Wind | Bernice, OK | |
| Jul 3, 9:23 PM CDT | Thunderstorm Wind 65 | Cleora, OK | |
| Jul 3, 9:30 PM CDT | Thunderstorm Wind | Grove, OK | |
| Jul 3, 9:35 PM CDT | Hail 0.75 | Grove, OK | |
| Jul 3, 9:37 PM CDT | Hail 0.75 | Grove, OK | |
| Jul 3, 9:45 PM CDT | Hail 0.75 | Grove, OK | |
| Jul 3, 9:50 PM CDT | Thunderstorm Wind 52 | Afton, OK |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.1 hours before the alert went out and 95 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
- 3487 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1249 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 040207 RRA SVRTUL OKC041-115-040315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 906 PM CDT THU JUL 3 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST OKLAHOMA ...NORTHERN DELAWARE COUNTY...SOUTHERN OTTAWA COUNTY AT 905 PM...RADAR INDICATED A SEVERE THUNDERSTORM CENTERED 4 MILES WEST OF AFTON. THE STORM WAS MOVING EAST SOUTHEAST AT 20 MILES AN HOUR. AFTON AND BERNICE ARE IN THE PATH OF THIS STORM. HAIL TO THE SIZE OF QUARTERS 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 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 TUnNED 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, 6 hours 54 minutes earlier.
Area forecast discussion, Jul 3, 2:12 PM CDT, 6 hours 54 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
Local storm report, Jul 3, 8:57 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
857 PM CDT THU JUL 03 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0728 PM 2 N WELCH OK .75 INCH HAIL
07/03/97 CRAIG DIME SIZED HAIL REPORTED
BY SPOTTERS
0731 PM WANN OK 60 MPH TSTM GUST
07/03/97 NOWATA REPORTED BY WANN PD
0731 PM WANN OK .88 INCH HAIL
07/03/97 NOWATA NICKEL SIZED HAIL REPORTED
BY WANN PD
0734 PM 2 N WANN OK .88 INCH HAIL
07/03/97 WASHINGTON NICKEL SIZED HAIL REPORTED
BY WASHINGTON COUNTY EOC
0749 PM 5 W BARTLESVILLE OK 1 INCH HAIL
07/03/97 OSAGE QUARTER SIZED HAIL
REPORTED BY SPOTTERS
0800 PM BARTLESVILLE OK 1 INCH HAIL
07/03/97 WASHINGTON QUARTER SIZED HAIL
REPORTED BY SPOTTERS
0825 PM 5 NW NOWATA OK .75 INCH HAIL
07/03/97 NOWATA DINE SIZED HAIL REPORTED
BY SPOTTERS
0827 PM PAWHUSKA OK 1 INCH HAIL
07/03/97 OSAGE DIME TO QUARTER SIZED HAIL
REPORTED BY SPOTTERS
0835 PM 12 NW VINITA OK 1.75 INCH HAIL
07/03/97 CRAIG GOLFBALL SIZED HAIL
REPORTED BY SPOTTERSLocal storm report, Jul 3, 9:01 PM CDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
857 PM CDT THU JUL 03 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0728 PM 2 N WELCH OK .75 INCH HAIL
07/03/97 CRAIG DIME SIZED HAIL REPORTED
BY SPOTTERS
0731 PM WANN OK 60 MPH TSTM GUST
07/03/97 NOWATA REPORTED BY WANN PD
0731 PM WANN OK .88 INCH HAIL
07/03/97 NOWATA NICKEL SIZED HAIL REPORTED
BY WANN PD
0734 PM 2 N WANN OK .88 INCH HAIL
07/03/97 WASHINGTON NICKEL SIZED HAIL REPORTED
BY WASHINGTON COUNTY EOC
0749 PM 5 W BARTLESVILLE OK 1 INCH HAIL
07/03/97 OSAGE QUARTER SIZED HAIL
REPORTED BY SPOTTERS
0800 PM BARTLESVILLE OK 1 INCH HAIL
07/03/97 WASHINGTON QUARTER SIZED HAIL
REPORTED BY SPOTTERS
0825 PM 5 NW NOWATA OK .75 INCH HAIL
07/03/97 NOWATA DINE SIZED HAIL REPORTED
BY SPOTTERS
0827 PM PAWHUSKA OK 1 INCH HAIL
07/03/97 OSAGE DIME TO QUARTER SIZED HAIL
REPORTED BY SPVOTTERS
0835 PM 12 NW VINITA OK 1.75 INCH HAIL
07/03/97 CRAIG GOLFBALL SIZED HAIL
REPORTED BY SPOTTERSThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 7:04 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 56 min |
| Jul 3, 7:09 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 66 min |
| Jul 3, 7:28 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 62 min |
| Jul 3, 7:53 PM CDT | Tornado Warning | TSA | Washington | 37 min |
| Jul 3, 8:09 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 66 min |
| Jul 3, 8:11 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 64 min |
| Jul 3, 8:26 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 64 min |
| Jul 3, 9:13 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 32 min |
| Jul 3, 10:22 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa | 53 min |
| Jul 3, 10:48 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 57 min |
| Jul 3, 11:13 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 32 min |
| Jul 3, 11:19 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 26 min |
| Jul 3, 11:23 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 22 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.