Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 413, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 29, 1986, 8:20 PM CDT for Dewey 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
- Sep 29, 1986, 8:20 PM CDT (01:20 UTC)
- Expired
- Sep 29, 1986, 9:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Dewey 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 |
|---|---|---|---|
| Sep 29, 8:28 PM CDT | Hail 0.75 | Dewey, 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 00:00Z, 1.3 hours before the alert went out and 143 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
- 1549 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 361 m²/s²
- 0-3 km storm-relative helicity
- 384 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 14.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Sep 29, 4:02 PM CDT, 4 hours 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 405 PM CDT MON SEP 29 1986 ...A TORNADO WATCH IS IN EFFECT FOR THE FOLLOWING COUNTIES OF NORTH CENTRAL TEXAS FROM 4 PM UNTIL 10 PM CDT THIS MONDAY AFTERNOON AND EVENING...FOARD...HARDEMAN...WILBARGER AND WICHITA. AT 400 PM CDT NO PRECIPTATION WAS OCCURRING IN ANY OF THE ABOVE COUNTIES. HOWEVER THUNDERSTORMS SOME VERY HEAVY WERE DEVELOPING IN AREA SOME 30 MILES WIDE FROM NORTH OF LUBBOCK TO NEAR WELLINGTON IN THE SOUTHEASTERN TEXAS PANHANDLE. OTHER SHOWERS AND THUNDERSTORMS WERE DEVELOPING TO THE NORTHEAST AND NORTHWEST OF ABILENE. ALL PRECIPITATION MOVING TO THE NORTHEAST AT NEAR 20 MPH. ADDITIONAL STATEMEN$TS WILL BE ISSUED THROUGHOUT THE AFTERNOON AND EVENING.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 7:07 PM CDT | Severe Thunderstorm Warning | OUN | Major | 53 min |
| Sep 29, 7:20 PM CDT | Severe Thunderstorm Warning | OUN | Roger Mills | 55 min |
| Sep 29, 7:31 PM CDT | Severe Thunderstorm Warning | OUN | Beckham | 59 min |
| Sep 29, 7:44 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 61 min |
| Sep 29, 7:47 PM CDT | Severe Thunderstorm Warning | OUN | Custer | 58 min |
| Sep 29, 8:31 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Washita | 59 min |
| Sep 29, 8:46 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 59 min |
| Sep 29, 9:22 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 53 min |
| Sep 29, 9:48 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 57 min |
| Sep 29, 9:53 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 37 min |
| Sep 30, 12:10 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Pottawatomie | 50 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.