Alert archive / Nebraska / Tornado Warnings in 1986

Tornado Warning 8, NWS Hastings, NE

April 26, 1986Polk County, Nebraska

NWS Hastings, NE issued this tornado warning at Apr 26, 1986, 4:45 PM CST for Polk County, Nebraska. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1986, 4:45 PM CST (22:45 UTC)
Expired
Apr 26, 1986, 5:45 PM CST
In force
60 min
Issued by
NWS Hastings, NE
Area
Whole counties

County Polk 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, 10.8 hours before the alert went out and 101 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 1986-04-26Temperature 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 1986-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 301 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3605 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
301 m²/s²
0-3 km storm-relative helicity
522 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 KGRI 262245
TORGRI
NEC143-262345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND ISLAND NE
445 PM CST SAT APR 26 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 545 PM CST FOR PEOPLE IN THE FOLLOWING COUNTY OF

CENTRAL NEBRASKA...POLK

AT 443 PM A POSSIBLE TORNADO INDICATED BY RADAR NEAR POLK NEBEASKA
MOVING NORTHEAST AT 30 MPH

PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF
AVAILABLE.  OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR.  CARS AND MOBILE HOMES SHOULD BE ABANDONED.

PEOPLE IN THE PATH OF THIS TORNADO SHOULD TAKE COVER IMMEDIATELY
TO SAVE YOUR LIVES.

IF YOU ARE CAUGHT IN THE OPEN..TRY TO HIDE IN A DEPRESSION LIKE
A DITCH OR CULVERT.

DAMAGE REPORTS OR OBSERVED SEVERE WEATHER SHOULD BE GIVEN TO A LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.

IN ADDITION TO THE THREAT OF TORNADOES..LARGE HAIL..DANGEROUS
LIGHTNING AND VERY HEAVY RAIN ARE LIKELY WITH THIS STORM.

OEB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 4:13 PM CSTSevere Thunderstorm WarningGIDHamilton, Polk, York47 min
Apr 26, 4:13 PM CSTSevere Thunderstorm WarningGIDMerrick47 min
Apr 26, 4:17 PM CSTTornado WarningGIDMerrick28 min
Apr 26, 5:43 PM CSTTornado WarningGIDHall27 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; the sounding from the Mesonet's radiosonde archive.