Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 169, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 27, 1990, 12:28 AM CDT for Haskell County, Oklahoma. It was in force for 47 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
- May 27, 1990, 12:28 AM CDT (05:28 UTC)
- Expired
- May 27, 1990, 1:15 AM CDT
- In force
- 47 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Haskell 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 |
|---|---|---|---|
| May 27, 12:35 AM CDT | Thunderstorm Wind 52 | Haskell, 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, 5.5 hours before the alert went out and 207 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
- 3596 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 867 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 4.5
- Supercell composite
- 18.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 270528 SVRTUL OKC061-270615- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1228 AM CDT SUN MAY 27 1990 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES ... IN SOUTHEAST OKLAHOMA ...HASKELL COUNTY AT 12 26 AM THE TULSA WEATHER RADAR INDICATED A SEVERE THUNDERSTORM NEAR QUINTON MOVING TO THE EAST AT 50 MPH. THIS STORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH... LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. 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.
In the hours before
Local storm report, May 26, 11:51 PM CDT, 37 minutes before
STORM REPORT NATIONAL WEATHER SERVICE TULSA, OK 1150 PM CDT SAT MAY 26 1990 TIME/CDT COUNTY EVENT 2245 PM CREEK DIME SIZE HAIL AT JUST SOUTH OF BRISTOW 2300 PM OKMULGEE DIME SI?ZE HAIL NORTHWEST OF HENRYETTA
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 10:15 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 45 min |
| May 26, 10:31 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee | 44 min |
| May 27, 12:13 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 47 min |
| May 27, 12:56 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 64 min |
| May 27, 3:43 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 62 min |
| May 27, 4:08 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 67 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.