Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 49, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 3, 1986, 11:44 AM CST for McClain County, Oklahoma. It was in force for 36 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
- Apr 3, 1986, 11:44 AM CST (17:44 UTC)
- Expired
- Apr 3, 1986, 12:20 PM CST
- In force
- 36 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County McClain 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 3, 12:02 PM CST | Hail 1.75 | Mcclain, OK | |
| Apr 3, 12:02 PM CST | Hail 1.75 | Mcclain, 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
Ok Cty/Will Rgrs, OK (KOKC), launched 12:00Z, 5.7 hours before the alert went out and 46 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
- 1300 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 576 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 031744 SVROKC OKC027-087-109-031820- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 1144 AM CST THU APR 3 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1220 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL OKLAHOMA...NORTHERN CLEVELAND...NORTHERN MCCLAIN AND SOUTHEAST OKLAHOMA AT 1143 AM, A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF BLANCHARD. THIS STORM IS MOVING TO THE NORTHEAST AT 50 MILES AN HOUR. PERSONS IN NORMAN AND MOORE ARE IN THE PATH OF THIS STORM. THIS STORM HAS PRODUCED GOLFBALL SIZE HAIL. IF YOU OBSERVE HAIL PENNY SIZE OR LARGER OR ANY WIND DAMAGE..NOTIFYC YOUR LOCAL LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY.
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
Special weather statement, Apr 3, 7:34 AM CST, 4 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 735 AM CST THU APR 3 1986 AT 730 AM THE WICHITA FALLS RADAR SHOWED SCATTERED SHOWERS AND ISOLATED VERY STRONG THUNDERSTORMS DEVELOPING RAPIDLY 30 MILES EITHER SIDE OF A LINE FROM WICHITA FALLS TO JUST WEST OF ABILENE. A VERY STRONG THUNDERSTORM WITHIN THIS AREA WAS LOCATED BETWEEN MUNDAY AND LAKE KEMP. THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...<GUSTY WINDS...AND OCCASIONAL LIGHTNING. MOVEMENT OF ALL PRECIPITATION TO THE NORTHEAST AT 35 MPH.
Special weather statement, Apr 3, 8:03 AM CST, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 800 AM CST THU APR 3 1986 AT 800 AM SCATTERED SHOWERS AND ISOLATED VERY STRONG THUNDERSTORMS WERE LOCATED IN AN AREA 15 MILES EITHER SIDE OF A LINE FROM SNYDER OKLAHOMA TO ABILENE TEXAS. THE STRONGEST THUNDERSTORM WITHIN THIS AREA WAS LOCATED OVER GOREE TO THE EAST OF MUNDAY. THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...SMALL HAIL...DANGEROUS LIGHWTING AND STRONG WINDS. MOVEMENT OF THIS PRECIPITATION TOWARDS THE NORTHEAST AT 40 MPH.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 10:21 AM CST | Severe Thunderstorm Warning | OUN | Grady, Stephens | 39 min |
| Apr 3, 11:00 AM CST | Severe Thunderstorm Warning | OUN | Grady, McClain | 45 min |
| Apr 3, 11:22 AM CST | Severe Thunderstorm Warning | OUN | Logan, Oklahoma | 38 min |
| Apr 3, 11:44 AM CST | Severe Thunderstorm Warning | OUN | Cleveland, Oklahoma | 36 min |
| Apr 3, 11:55 AM CST | Severe Thunderstorm Warning | OUN | Cotton, Stephens | 35 min |
| Apr 3, 11:55 AM CST | Severe Thunderstorm Warning | OUN | Grady | 35 min |
| Apr 3, 12:04 PM CST | Severe Thunderstorm Warning | OUN | Noble, Payne | 41 min |
| Apr 3, 12:24 PM CST | Severe Thunderstorm Warning | OUN | Grady, McClain | 36 min |
| Apr 3, 1:05 PM CST | Severe Thunderstorm Warning | OUN | Cleveland, Oklahoma | 45 min |
| Apr 3, 1:45 PM CST | Severe Thunderstorm Warning | OUN | Cleveland, Logan, Oklahoma | 45 min |
| Apr 3, 1:45 PM CST | Severe Thunderstorm Warning | OUN | McClain | 45 min |
| Apr 3, 2:00 PM CST | Severe Thunderstorm Warning | OUN | Garvin, Stephens | 45 min |
| Apr 3, 2:17 PM CST | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 43 min |
| Apr 3, 2:23 PM CST | Severe Thunderstorm Warning | OUN | Cleveland, McClain | 37 min |
| Apr 3, 2:33 PM CST | Severe Thunderstorm Warning | OUN | Stephens | 42 min |
| Apr 3, 2:54 PM CST | Severe Thunderstorm Warning | OUN | Lincoln, Payne | 56 min |
| Apr 3, 3:10 PM CST | Severe Thunderstorm Warning | OUN | Garvin, McClain | 50 min |
| Apr 3, 3:10 PM CST | Severe Thunderstorm Warning | OUN | Stephens | 50 min |
| Apr 3, 4:10 PM CST | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 40 min |
| Apr 3, 4:25 PM CST | Severe Thunderstorm Warning | OUN | Carter, Love | 45 min |
| Apr 3, 5:08 PM CST | Severe Thunderstorm Warning | OUN | Love | 37 min |
| Apr 3, 5:43 PM CST | Severe Thunderstorm Warning | OUN | Marshall | 32 min |
| Apr 3, 5:53 PM CST | Severe Thunderstorm Warning | OUN | Bryan | 47 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1986Every severe thunderstorm warning in 1986
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.