Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 155, NWS Norman, OK

May 8, 1986Ellis County, Roger Mills County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 8, 1986, 2:28 PM CDT for Ellis County, Roger Mills County, Oklahoma. It was in force for 62 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: May 8, 1986, 2:28 PM CDT (19:28 UTC)
Expired: May 8, 1986, 3:30 PM CDT
In force: 62 min
Issued by: NWS Norman, OK
Area: Whole counties

Counties Ellis County, OK, Roger Mills 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 8, 2:50 PM CDT	Hail 1.75	Ellis, OK
May 8, 3:08 PM CDT	Hail 1	Roger Mills, 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

Fort Sill, OK (KFSI), launched 12:00Z, 7.5 hours before the alert went out and 188 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 746 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 886 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.1

Open this sounding in Storm Lab

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, May 8, 1:32 PM CDT, 56 minutes before

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Special weather statement, May 8, 2:25 PM CDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WICHITA FALLS TX
220PM CDT THU MAY 8 1986

...ISOLATED THUNDERSTORM IN SOUTHWEST WILBARGER COUNTY...

AN ISOLATED BUT VERY HEAVY THUNDERSTORM WAS LOCATED NORTHWEST OF
LAKE KEMP IN EXTREME SOUTHWEST WILBARGER COUNTY. THE THUNDERSTORM
IN BAYLOR COUNTY HAS WEAKENED AND ONLY A SMALL AREA OF LIGHT RAIN
WAS LOCATED FROM SEYMOUR TO LAKE KEMP.

THIS SMALL THUNDERSTORM COMPLEX IN WILBARGER COUNTY WAS BUILDING
NORTH AND IF PRESENT TRENDS CONTINUE WOULD MOVE INTO THE VERNON
VICINITY DURING THE NEXT HOUR.

RESIDENTS IN AND NEAR THIS THUNDERSTORM SHOULD EXPECT GUSTY WINDS..
BRIEF BUT HEAVY RAIN..FREQUENT LIGHTNING AND POSSIBLE SMALL HAIL.

                                                                      .

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 2:36 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	54 min
May 8, 3:25 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	65 min
May 8, 3:40 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	50 min
May 8, 4:11 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	49 min
May 8, 4:11 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	49 min
May 8, 4:38 PM CDT	Severe Thunderstorm Warning	OUN	Woods	37 min
May 8, 4:44 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche	61 min
May 8, 5:00 PM CDT	Severe Thunderstorm Warning	OUN	Woods	45 min
May 8, 5:10 PM CDT	Tornado Warning	OUN	Cotton, Tillman	50 min
May 8, 6:00 PM CDT	Tornado Warning	OUN	Cotton, Tillman	45 min
May 8, 6:19 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady, Kingfisher	56 min
May 8, 6:19 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	56 min
May 8, 6:24 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	51 min
May 8, 6:40 PM CDT	Tornado Warning	OUN	Logan, Oklahoma	35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1986 Every 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.