Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 13, NWS Hastings, NE

May 30, 1987Hamilton County, Merrick County, Polk County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 30, 1987, 5:22 PM CDT for Hamilton County, Merrick County, Polk County, Nebraska. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 30, 1987, 5:22 PM CDT (22:22 UTC)
Expired
May 30, 1987, 6:30 PM CDT
In force
68 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Hamilton County, NE, Merrick County, NE, 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, 10.4 hours before the alert went out and 129 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 1987-05-30Temperature 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 1987-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
3586 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
9 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 302226
SVRGRI
NEC081-121-143-302330-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND ISLAND NE
522 PM CDT SAT MAY 30 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 630 PM CDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

CENTRAL NEBRASKA...EXTREME NORTHEAST HAMILTON...NORTHERN MERRICK AND
 WESTERN POLK

AT 510 PM CDT A LINE OF SEVERE THUNDERSTORMS WAS FROM CLARKS TO
ARCHER NEBRASKA MOVING TOWARD THE EAST AT 15 MPH.

THIS SEVERE THUNDERSTORM MAY PRODUCE LARGE HAIL GREATER THAN 3/4
INCH IN DIAMETER AND DESTRUCTIVE WINDS OF 80 TO 100 MPH.  SO GET
INTO A SAFE BUILDING AWAY FROM WINDOWS OR GLASS DOORS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 6:00 PM CDTSevere Thunderstorm WarningGIDBuffalo, Hall, Hamilton, Howard, Merrick60 min
May 30, 6:00 PM CDTSevere Thunderstorm WarningGIDPolk60 min
May 30, 6:15 PM CDTTornado WarningGIDPolk, York30 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1987Every severe thunderstorm warning 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.