Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 39, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 16, 1990, 8:39 PM CDT for Creek County, Tulsa County, Oklahoma. It was in force for 66 min. 6 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
- Apr 16, 1990, 8:39 PM CDT (01:39 UTC)
- Expired
- Apr 16, 1990, 9:45 PM CDT
- In force
- 66 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Creek County, OK, Tulsa County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 16, 8:52 PM CDT | Hail 0.88 | Tulsa, OK | |
| Apr 16, 8:52 PM CDT | Hail 0.88 | Creek, OK | |
| Apr 16, 9:04 PM CDT | Hail 0.88 | Tulsa, OK | |
| Apr 16, 9:26 PM CDT | Hail 1 | Creek, OK | |
| Apr 16, 9:48 PM CDT | Hail 0.75 | Tulsa, OK | |
| Apr 16, 9:50 PM CDT | Hail 0.75 | Creek, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.7 hours before the alert went out and 143 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
- 2818 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1378 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 170140 SVRTUL OKC037-143-170245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 839 PM CDT MON APR 16 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...CREEK COUNTY...TULSA COUNTY AT 840 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF SAPULPA MOVING EAST AT 20 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 7:03 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers | 42 min |
| Apr 16, 7:22 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 53 min |
| Apr 16, 7:37 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 68 min |
| Apr 16, 7:45 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 60 min |
| Apr 16, 7:45 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 60 min |
| Apr 16, 7:58 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 62 min |
| Apr 16, 7:59 PM CDT | Severe Thunderstorm Warning | TSA | Mayes | 61 min |
| Apr 16, 8:10 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 65 min |
| Apr 16, 8:50 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 55 min |
| Apr 16, 9:00 PM CDT | Severe Thunderstorm Warning | TSA | Sequoyah | 60 min |
| Apr 16, 9:36 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 69 min |
| Apr 16, 9:43 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee, Tulsa | 62 min |
| Apr 16, 9:48 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 57 min |
| Apr 16, 10:02 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa, Washington | 58 min |
| Apr 16, 10:17 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 58 min |
| Apr 16, 10:21 PM CDT | Flash Flood Warning | TSA | Creek | 3 hr |
| Apr 16, 10:43 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee | 62 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990
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.