Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 241, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 9, 1997, 2:14 AM CDT for Ottawa County, Oklahoma. It was in force for 46 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
- Jul 9, 1997, 2:14 AM CDT (07:14 UTC)
- Expired
- Jul 9, 1997, 3:00 AM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Ottawa County, OK
The radar
The Tulsa radar (KINX), 100 km from the middle of the area, began a volume at 07:13 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 9, 2:15 AM CDT | Thunderstorm Wind | Miami, OK | A severe thunderstorm produced strong winds which downed several large tree limbs in Miami. |
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 nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 7.2 hours before the alert went out and 90 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
- 1254 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1438 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
368 WUUS1 KTUL 090716 RRA SVRTUL OKC115-090800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 214 AM CDT WED JUL 9 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST OKLAHOMA ...OTTAWA COUNTY AT 212 AM...RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES WEST OF COMMERCE MOVING SOUTHEAST AT 15 MPH. MIAMI IS IN THE PATH OF THIS STORM. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. 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 8, 9:27 PM CDT, 4 hours 47 minutes earlier.
Area forecast discussion, Jul 8, 9:27 PM CDT, 4 hours 47 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 925 PM CDT TUE JUL 8 1997 STG TSTMS CONT OVR SCNTL KS THIS EVE. IR SATL PICS INDCT TSTMS BCMG MORE ORGANIZED THIS EVE. LUKS LIKE AN MCS IN THE DVLPG STAGES. IF ONE DVLPS...850-300 MB THCKNS LNS WUD STEER MCS ACRS NERN OK INTO NWRN/WCNTL AR. WL RAISE POPS OVRNGT IN THOSE AREAS AND ALSO INTRODC LO POPS IN SERN OK JUST IN CASE. THREAT OF SVR WX MAY NOT BE VE>RY GOOD AS WNDS ALOFT RATHER WK AND LO LVL WNDS FEEDING MCS WL NOT BE VERY STG. NVRTHELESS SOME LCLY HVY RAINS MAY ACCMPNY SLO MOVG SYS LT TNGT PRIMARILY IN NERN CORNER OF OK. /11 .TUL... OK...NONE. AR...NONE.
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.