Alert archive / Nebraska / Tornado Warnings in 1986

Tornado Warning 29, NWS North Platte, NE

August 6, 1986Cherry County, Nebraska

NWS North Platte, NE issued this tornado warning at Aug 6, 1986, 5:55 PM MDT for Cherry County, Nebraska. It was in force for 50 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
Aug 6, 1986, 5:55 PM MDT (23:55 UTC)
Expired
Aug 6, 1986, 6:45 PM MDT
In force
50 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Cherry 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

TimeReportWhereRemark
Aug 6, 6:15 PM MDTHail 1.5Cherry, NE
Aug 6, 6:30 PM MDTHail 1.75Cherry, 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.9 hours before the alert went out and 163 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 1986-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 988 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 1986-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
988 J/kg
Mixed-layer CIN
-199 J/kg
Mixed-layer LCL
1401 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
207 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KVTN 062255 RRA
TORVTN
NEC031-062255-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE VALENTINE NE
655 PM CDT WED AUG 06 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE
UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF


NORTH CENTRAL NEBRASKA...CHERRY

AT 635 AM CDT RADAR INDICATED A POSSIBLE TORNADO 15 MILES NORTH OF
VALENTINE MOVING SOUTHEAST AT 20 MILES AN HOUR.

IF YOpU ARE NEAR THE PATH OF THIS TORNADO...YOU SHOULD GO TO A BASMENT
SHELTER IF AVAIABLE.  OTHERWISE GO TO A CENTRAL ROOM ON THE LOWEST
FLOOR POSSIBLE.  ABANDON CARS AND MOBILE HOMES FOR A REINFORCED
BUILDING.

RODDA 2255Z

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 5:35 PM MDTSevere Thunderstorm WarningLBFBrown, Keya Paha60 min

Nearby

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