Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 12, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 1986, 10:23 PM CST for LeFlore County, Oklahoma. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Apr 3, 1986, 10:23 PM CST (04:23 UTC)
- Expired
- Apr 3, 1986, 11:30 PM CST
- In force
- 67 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Springfield, MO (KUMN), launched 00:00Z, 4.4 hours before the alert went out and 237 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
- 245 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1060 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSM 040423 SVRFSM ARC033-131-OKC079-135-040530- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FORT SMITH AR 1023 PM CST THU APR 3 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF ARKANSAS...CRAWFORD AND SEBASTIAN OKLAHOMA...NORTHERN LEFLORE AND SEQUOYAH AT 1020PM A LINE OF SEVERE THUNDERSTORMS WAS LINDICATED BY RADAR FROM 5 MILES EAST OF HEAVERNER OKLAHOMA TO 20 MILES WEST OF SPIRO OKLAHOMA MOVING TOWARDS THE NORTHEAST AT 50MPH. LARGE HAIL AND STRONG SURFACE WINDS MAY OCCUR WITH THIS STORM. IF YOU OBSERVE ANY LARGE HAIL OR STRONG WINDS PLEASE RELAY YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY. IF YOU OSBSERVE ANY LARGE HAIL OR STRONG WINDS PLEASE RELAY YOUR REPORT TO THE NEAREST LAW ENFORCEMENT AGENCY.
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, 5:47 PM CST, 4 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 545 PM CST THU APR 3 1986 ...VERY HEAVY RAINS IN PARTS OF TULSA... AT 545 PM TULSA RADAR CONTINUES SHOW A LINE OF SHOWERS AND THUNDERSTORMS FROM BARTLESVILLE SOUTH TO TULSA AND ON DOWN TO NEAR ARDMORE. MODERATE TO VERY HEAVY RAINFALL HAS BEEN REPORTED ALONG THE LINE. A FEW REPORTS OF SMALL SIZE HAIL...BUT LITTLE WIND OF CONSEQUENCE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF CENTRAL AND EASTERN OKLAHOMA UNTIL 10 PM TONIGHT.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 10:23 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 67 min |
| Apr 4, 9:05 AM CST | Severe Thunderstorm Warning | TSA | Cherokee | 55 min |
| Apr 4, 9:13 AM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 62 min |
| Apr 4, 10:24 AM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 66 min |
| Apr 4, 11:31 AM CST | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 59 min |
| Apr 4, 12:18 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 57 min |
| Apr 4, 12:31 PM CST | Severe Thunderstorm Warning | TSA | Latimer | 59 min |
| Apr 4, 12:47 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 58 min |
| Apr 4, 1:33 PM CST | Flash Flood Warning | TSA | Latimer, Pittsburg | 4 hr |
| Apr 4, 2:39 PM CST | Severe Thunderstorm Warning | TSA | Latimer | 66 min |
| Apr 4, 4:57 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 63 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; the sounding from the Mesonet's radiosonde archive.