Alert archive / Nebraska / Tornado Warnings in 1986

Tornado Warning 16, NWS North Platte, NE

June 28, 1986Knox County, Nebraska

NWS North Platte, NE issued this tornado warning at Jun 28, 1986, 9:17 PM CDT for Knox County, Nebraska. It was in force for 23 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: Jun 28, 1986, 9:17 PM CDT (02:17 UTC)
Expired: Jun 28, 1986, 9:40 PM CDT
In force: 23 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Knox County, NE

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
Jun 28, 9:27 PM CDT	Tornado F0	Knox, NE

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

Aberdeen, SD (KHON), launched 00:00Z, 2.3 hours before the alert went out and 255 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: 640 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1569 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -41 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOFK 290217
TOROFK
NEC107-290240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
917 PM CDT SAT JUN 28 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 940 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

NORTHEAST NEBRASKA...EASTERN KNOX

AT 910 PM CDT RADAR INDICATED A POSSIBLE TORNADO 5 MILES SOUTHEAST
OF LINDY NEBRASKA MOVING SOUTHEAST AT 20 MPH.

 PEOPLE IN THE PATH OF THIS TORNADO SHOULD GO TO A BASEMENT SHELTER
IF POSSIBLE...OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST
FLOOR.  ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING.

 THIS IS AN EXTREMELY DANGEROUS SITUATION...PEOPLE IN THE PATH OF
STORM SHOULD TAKE COVER IMMEDIATELY IN A BASEMENT SHELTER OR IN THE
CENTRAL PART OF THEIR HOMES.  ABANDON CARS AND MOBILE HOMES FOR A
REINFORCED SHELTER.

 A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHEAST AND
 NORTH CENTRAL NEBRASKA UNTIL 3 AM CDT SUNDAY MORNING.

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 28, 9:48 PM CDT	Tornado Warning	LBF	Cedar, Knox	32 min
Jun 29, 12:06 AM CDT	Severe Thunderstorm Warning	LBF	Cherry	54 min
Jun 29, 3:14 PM CDT	Severe Thunderstorm Warning	LBF	Keya Paha	26 min
Jun 29, 3:44 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Keya Paha	56 min
Jun 29, 4:21 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	59 min
Jun 29, 5:25 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Rock	50 min
Jun 29, 5:47 PM CDT	Severe Thunderstorm Warning	LBF	Cedar	43 min
Jun 29, 6:23 PM CDT	Severe Thunderstorm Warning	LBF	Antelope, Knox	52 min
Jun 29, 6:23 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	52 min

Nearby

Tornado Warnings in Nebraska, 1986 Every tornado warning in 1986 Tornadoes 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.