Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 23, NWS North Platte, NE

May 7, 1986Keith County, Lincoln County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 7, 1986, 8:45 PM MDT for Keith County, Lincoln County, Nebraska. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
May 7, 1986, 8:45 PM MDT (02:45 UTC)
Expired
May 7, 1986, 9:35 PM MDT
In force
50 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Keith County, NE, Lincoln County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.8 hours before the alert went out and 51 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 00:00Z on 1986-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2917 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 00:00Z on 1986-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 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
2917 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1808 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
258 m²/s²
Significant tornado parameter
0.6
Supercell composite
21.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 080245
SVRLBF
NEC101-111-080335-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
845 PM MDT WED MAY 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 935 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST NEBRASKA...EASTERN KEITH AND NORTHWEST LINCOLN

AT 835 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
SOUTHWEST OF PAXTON, NEBRASKA OR 31 MILES WEST OF NORTH PLATTE
MOVING NORTH AT 35 MILE AN HOUR

IF THREATENING WEATHER APPROACHES...GET TO A REINFORCED SHELTER AND
PREPARE FOR STRONG DAMAGING WIND..LARGE HAIL..VERY HEAVY RAIN..AND
DANGEROUS LIGHTNING.

SEVERE THUNDERqSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH..
LARGE HAIL GREATER THAN 3/4 INCH IN DIAMETER..DEADLY LIGHTNING
AND VERY HEAVY RAIN THAT CAN FLOOD A LOW LYING AREA QUICKLY.

HETZKE  0244   Z

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 6:18 PM MDTSevere Thunderstorm WarningLBFBrown, Rock57 min
May 7, 6:18 PM MDTSevere Thunderstorm WarningLBFBlaine57 min
May 7, 6:51 PM MDTSevere Thunderstorm WarningLBFKnox39 min
May 7, 7:07 PM MDTSevere Thunderstorm WarningLBFFrontier, Lincoln68 min
May 7, 7:13 PM MDTSevere Thunderstorm WarningLBFFrontier, Lincoln47 min
May 7, 7:19 PM MDTSevere Thunderstorm WarningLBFBrown, Rock56 min
May 7, 7:19 PM MDTSevere Thunderstorm WarningLBFBlaine56 min
May 7, 7:32 PM MDTSevere Thunderstorm WarningLBFKnox28 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 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; the sounding from the Mesonet's radiosonde archive.