Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 126, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 25, 1997, 10:23 PM CDT for Osage County, Oklahoma. It was in force for 52 min. 2 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
- May 25, 1997, 10:23 PM CDT (03:23 UTC)
- Expired
- May 25, 1997, 11:15 PM CDT
- In force
- 52 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 03:26 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, 10:30 PM CDT | Thunderstorm Wind | Grainola, OK | |
| 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, 3.4 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 May 25, 9:00 PM CDT, 1 hour 23 minutes earlier.
Area forecast discussion, May 25, 9:00 PM CDT, 1 hour 23 minutes before
FPUS3 KTUL 260155 AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 900 PM CDT SUN MAY 25 1997 MID-LEVEL WARMING A BIT STRONGER THAN ANTICIPATED AS PER 00Z OUN SOUNDING...ALTHO THIS MAY HAVE BEEN THE RESULT OF SUBSIDENCE SURROUNDING SUPERCELLS TO THE S OF RAOB SITE. LACK OF WIDESPREAD CONVECTION OVER FA SUGGESTS COMBINATION OF MID-LEVEL WARMING...EARLY AFTERNOON CLOUD COVER...AND MORNING PRECIP FOOTPRINT PLAYED ROLE. STILL...GOOD CONVERGENCE ALONG DRYLINE IN KS...AMPLE SFC MOISTURE...AND MID-LEVEL JET MAX PUNCHING INTO CENTRAL PLAINS BODE WELL FOR SEVERE POTENTIAL ALONG NRN ZNS. WILL DECREASE POPS FOR FIRST PD IN MOST ZNS EXCEPT NRNMOST AND EXTREME SE WHERE CENTRAL OK STORMS WILL LIKELY TRACK. ALL PROFILER DATA EAST OF DRYLINE SHOW IMPRESSIVE HODOGRAPHS...SO SUPERCELLS ARE STILL A GOOD POSSIBILITY IF INSTABILITY CAN BE RELEASED. /27 .TUL... OK...NONE. AR...NONE.
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, 10:40 PM CDT | Tornado Warning | TSA | Osage | 35 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
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.