Alert archive / Oklahoma / Tornado Warnings in 1997
Tornado Warning 13, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at May 25, 1997, 10:40 PM CDT for Osage County, Oklahoma. It was in force for 35 min. 1 report 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
- May 25, 1997, 10:40 PM CDT (03:40 UTC)
- Expired
- May 25, 1997, 11:15 PM CDT
- In force
- 35 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 03:41 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 |
|---|---|---|---|
| May 25, 10:45 PM CDT | Hail 0.88 | Grainola, OK | A severe thunderstorm produced dime to nickel size hail and strong winds which downed trees and phone lines 1 mile west of Grainola. |
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 |
|---|---|---|---|
| May 25, 8:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.7 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
- 360 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 1368 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
974 WFUS1 KTUL 260342 RRA TORTUL OKC113-260415- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 1040 PM CDT SUN MAY 25 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1115 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...NORTHERN OSAGE COUNTY AT 1035 PM...RADAR INDICATED A POSSIBLE TORNADO JUST WEST OF GRAINOLA IN OSAGE COUNTY...MOVING EAST ABOUT 20 MPH. GRAINOLA IS IN THE PATH OF THE STORM. LARGE HAIL IS ALSO POSSIBLE WITH THIS STORM. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. STAY AWAY FROM OUTSIDE WALLS AND AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET IN A GROUND DEPRESSION. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 10:14 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 61 min |
| May 25, 10:23 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 52 min |
| May 25, 11:59 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 31 min |
| May 26, 12:32 AM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 43 min |
| May 26, 5:54 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee, Tulsa | 51 min |
| May 26, 5:54 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee, Tulsa | 51 min |
| May 26, 6:02 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 43 min |
| May 26, 6:20 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee, Tulsa | 40 min |
| May 26, 6:24 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 51 min |
| May 26, 6:32 PM CDT | Tornado Warning | TSA | Okfuskee | 28 min |
| May 26, 6:34 PM CDT | Tornado Warning | TSA | Creek, Tulsa | 41 min |
| May 26, 6:43 PM CDT | Tornado Warning | TSA | Osage | 47 min |
| May 26, 6:47 PM CDT | Tornado Warning | TSA | Okmulgee | 43 min |
| May 26, 6:52 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 53 min |
| May 26, 6:57 PM CDT | Tornado Warning | TSA | Osage, Tulsa | 48 min |
Nearby
Tornado Warnings in Oklahoma, 1997Every tornado warning in 1997Tornadoes 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.