Alert archive / Oklahoma / Tornado Warnings in 1990
Tornado Warning 1, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Mar 13, 1990, 8:05 PM CST for Creek County, Okmulgee County, Oklahoma. It was in force for 40 min. 3 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 13, 1990, 8:05 PM CST (02:05 UTC)
- Expired
- Mar 13, 1990, 8:45 PM CST
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties Creek County, OK, Okmulgee 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 |
|---|---|---|---|
| Mar 13, 8:10 PM CST | Tornado F2 | Creek, OK | |
| Mar 13, 8:15 PM CST | Tornado F2 | Okmulgee, OK | |
| Mar 13, 8:15 PM CST | Hail 3 | Okmulgee, 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, 2.1 hours before the alert went out and 128 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
- 1624 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 140204 TORTUL OKC037-111-140245- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 805 PM CST TUE MAR 13 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 845 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN NORTHEAST OKLAHOMA ...SOUTHERN CREEK COUNTY...NORTHERN OKMULGEE COUNTY AT 802 PM CST RADAR INDICATED A POSSIBLE TORNADO 10 MILES SOUTHEAST OF BRISTOW MOVING EAST NORTHEAST AT 30 MPH. 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 O1UTSIDE WALLS AND AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET IN A GROUND DEPRESSION.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 7:15 PM CST | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 60 min |
| Mar 13, 8:17 PM CST | Severe Thunderstorm Warning | TSA | Okfuskee | 58 min |
| Mar 13, 8:28 PM CST | Severe Thunderstorm Warning | TSA | Tulsa | 62 min |
| Mar 13, 8:45 PM CST | Severe Thunderstorm Warning | TSA | Okmulgee, Wagoner | 60 min |
| Mar 13, 8:55 PM CST | Severe Thunderstorm Warning | TSA | Rogers | 65 min |
| Mar 13, 9:30 PM CST | Severe Thunderstorm Warning | TSA | Tulsa | 45 min |
| Mar 13, 11:25 PM CST | Severe Thunderstorm Warning | TSA | Mayes | 65 min |
| Mar 13, 11:55 PM CST | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 65 min |
Nearby
Tornado Warnings in Oklahoma, 1990Every tornado warning in 1990Tornadoes 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.