Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 90, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 12, 1986, 9:20 PM CDT for Nowata County, Oklahoma. It was in force for 55 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
- Jul 12, 1986, 9:20 PM CDT (02:20 UTC)
- Expired
- Jul 12, 1986, 10:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Nowata 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 |
|---|---|---|---|
| Jul 12, 9:32 PM CDT | Thunderstorm Wind 0 | Nowata, 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
Springfield, MO (KUMN), launched 00:00Z, 2.3 hours before the alert went out and 162 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
- 3026 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 16.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 130220 SVRTUL OKC035-105-115-130315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 920 PM CDT SAT JUL 12 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTHEAST OKLAHOMA...CRAIG...NOWATA AND OTTAWA AT 920 PM A LINE OF SEVERE THUNDESTORMS WAS LOCATED FROM NORTHERN NOWATA COUNTY EASTWARD TO NEAR MIAMI OKLAHOMA. THESE THUNDERSTORMS WERE MOVING TO THE EAST SOUTHEAST AT 15 MILES AN HOUR. THIS THUNDERSTORM WILL LIKELY PRODUCE WINDS IN EXCESS OF 60 MILES AN HOUR AND HAIL 3/4 INCH OR LARGER IN DIAMETER. IF YOU ARE IN OR NEAR THE WARNING AREA GET TO A REINFORCED SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY HEAVY RAINFALL AND LIGHTNING. PEOPLE IN MOBILE HOMES SHOULD SEEK SHELTER IN A NEARBY REINFORCED BUILDING OR GET INTO A DITCH OR OTHER GROUND DEPRESSION. KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 8:50 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 55 min |
| Jul 12, 9:20 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 55 min |
| Jul 12, 9:53 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 67 min |
| Jul 12, 10:24 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 66 min |
| Jul 12, 11:02 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 58 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.