Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 63, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 29, 1997, 9:49 PM CST for McIntosh County, Muskogee County, Oklahoma. It was in force for 56 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
- Mar 29, 1997, 9:49 PM CST (03:49 UTC)
- Expired
- Mar 29, 1997, 10:45 PM CST
- In force
- 56 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties McIntosh County, OK, Muskogee County, OK
The radar
The Tulsa radar (KINX), 76 km from the middle of the area, began a volume at 03:49 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 |
|---|---|---|---|
| Mar 29, 10:40 PM CST | Thunderstorm Wind | Webbers Falls, OK | |
| Mar 29, 10:48 PM CST | Thunderstorm Wind 52 | Checotah, 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 nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.8 hours before the alert went out and 173 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
- 132 J/kg
- Mixed-layer CIN
- -180 J/kg
- Mixed-layer LCL
- 2545 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 300351 RRA SVRTUL OKC091-101-300445- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 949 PM CST SAT MAR 29 1997 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 PM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL OKLAHOMA ...MCINTOSH COUNTY...MUSKOGEE COUNTY AT 9:50 PM RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM OKMULGEE TO >HENRYETTA MOVING EAST AT 40 MPH. THESE STORMS HAVE PRODUCED NICKEL AND QUARTER SIZED HAIL AND WIND GUSTS UP TO 70 MPH. BOYNTON...WAINWRIGHT AND HITCHITA ARE IN THE PATHS OF THESE STORMS. &
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 Mar 29, 9:00 PM CST, 49 minutes earlier.
Area forecast discussion, Mar 29, 9:00 PM CST, 49 minutes before
FPUS3 KTUL 300257 COR AFDTUL EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 900 PM CST SAT MAR 29 1997 DID A QUICK UPDATED TO SIMPLIFY SKY CONDITION...ADJUST POPS A BIT AND ADD THE MENTION OF THUNDER TO PLACES THAT DID NOT HAVE IT ALREADY. .TUL... OK...NONE. AR...NONE. ABBAS
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 8:50 PM CST | Severe Thunderstorm Warning | TSA | Creek | 55 min |
| Mar 29, 9:26 PM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 49 min |
| Mar 29, 9:30 PM CST | Severe Thunderstorm Warning | TSA | Okmulgee | 45 min |
| Mar 29, 10:12 PM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 33 min |
| Mar 29, 10:42 PM CST | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 63 min |
| Mar 29, 11:10 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Sequoyah | 65 min |
| Mar 29, 11:10 PM CST | Severe Thunderstorm Warning | TSA | Adair | 65 min |
| Mar 29, 11:20 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 55 min |
| Mar 30, 12:09 AM CST | Severe Thunderstorm Warning | TSA | LeFlore | 36 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.