Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 65, NWS North Platte, NE

July 5, 1986Colfax County, Cuming County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 5, 1986, 6:25 PM CDT for Colfax County, Cuming County, Nebraska. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jul 5, 1986, 6:25 PM CDT (23:25 UTC)
Expired
Jul 5, 1986, 9:10 PM CDT
In force
3 hr
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Colfax County, NE, Cuming 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

Omaha, NE (KOAX), launched 12:00Z, 11.4 hours before the alert went out and 67 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, Omaha, NE at 12:00Z on 1986-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Omaha, NE at 12:00Z on 1986-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 318 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3673 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
318 m²/s²
0-3 km storm-relative helicity
315 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOFK 052325
SVROFK
NEC037-039-060015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
625 PM CDT SAT JUL 5 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTHEAST NEBRASKA...EXTREME COLFAX AND SOUTHERN CUMING

AT 615PM A SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF HOWELSS OR 30
MILES SOUTHEAST OF NORFOLK WAS MOVING VERY SLOWLY NORTHEAST AT 10
MPH.  ANOTHER SEVERE THUNDERSTORM WAS 5 MILES WEST OF WESTPOINT
NEBRASKA OR 35 MILES SOUTHEAST OF NORFOLK.

 REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DEADLY WINDS IN EXCESS
OF 75 MPH...LARGE HAIL...KILLER LIGHTNING...AND TORRENTIAL RAINS
THAT CAN QUICKLY FLOOD A LOW LYING AREA.

 A TORNADO WATCH CONTINUES IN EFFECT UNTIL 10 PM CDT FOR A PORTION
 OF NORTHEAST NEBRASKA.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 5, 5:44 PM CDTSevere Thunderstorm WarningLBFColfax, Platte31 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.