Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 110, NWS North Platte, NE

August 18, 1986Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 18, 1986, 4:37 AM MDT for Cherry County, Nebraska. It was in force for 58 min.

The area

The counties it named.

The facts

Issued: Aug 18, 1986, 4:37 AM MDT (10:37 UTC)
Expired: Aug 18, 1986, 5:35 AM MDT
In force: 58 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 10.6 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-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: 760 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 1620 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 181037
SVRVTN
NEC031-181135-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
437 AM MDT MON AUG 18 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 535 AM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTH CENTRAL NEBRASKA...NORTHEAST CHERRY AND THE CITY OF VALENTINE

AT 433 AM MDT..533 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM 22
MILES NORTHWEST OF VALENTINE IN NORTH CENTRAL NEBRASKA MOVING
SOUTHEAST AT 35 MPH. THIS STORM SHOULD BE NEAR VALENTINE NEBRASKA
BY AROUND 505 AM MDT..605AM CDT THIS MORNING.

REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH..LARGE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN THAT
CAN QUICKLY FLOOD LOW LYING AREAS.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE
TO A PLACE OF SAFETY IF ONE IS SPOTTED.

KARR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 5:10 AM MDT	Severe Thunderstorm Warning	LBF	Cherry	85 min

Nearby

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