Alert archive / Nebraska / Tornado Warnings in 1987

Tornado Warning 2, NWS Hastings, NE

March 20, 1987Adams County, Hall County, Nebraska

NWS Hastings, NE issued this tornado warning at Mar 20, 1987, 6:37 PM CST for Adams County, Hall County, Nebraska. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Mar 20, 1987, 6:37 PM CST (00:37 UTC)
Expired
Mar 20, 1987, 7:00 PM CST
In force
23 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Adams County, NE, Hall 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, 0.6 hours before the alert went out and 183 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 1987-03-21Temperature 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, N. Platte/Lee Bi, NE at 00:00Z on 1987-03-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -194 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
1191 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-194 m²/s²
0-3 km storm-relative helicity
-123 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 210037
TORGRI
NEC001-079-210100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND ISLAND NE
637 PM CST FRI MAR 20 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING 
EFFECTIVE UNTIL 700 PM CST FOR PEOPLE IN THE FOLLOWING COUNTIES OF

SOUTH CENTRAL NEBRASKA...NORTHERN ADAMS AND HALL

AT 630PM... A POSSIBLE TORNADO WAS REPORTED WEST OF HASTINGS...
NEAR PROSSER...MOVING NORTH AT 50 MPH.

RADAR INDICATES THAT THIS STORM WILL BE MOVING TOWARD ALDA...AND
THE WESTERN PORTIONS OF GRAND ISLAND BY 645 PM CST
...SIRENS ARE SOUNDING IN GRAND ISLAND AND PERSONS IN THIS AREA
SHOULD BE SEEKING SHELTER...NOW...

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 20, 6:22 PM CSTSevere Thunderstorm WarningGIDAdams, Hall58 min
Mar 20, 6:22 PM CSTSevere Thunderstorm WarningGIDHoward58 min

Nearby

Tornado Warnings in Nebraska, 1987Every tornado warning in 1987Tornadoes in 1987

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.