Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 73, NWS North Platte, NE

July 28, 1990Antelope County, Knox County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 28, 1990, 11:59 AM CDT for Antelope County, Knox County, Nebraska. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Jul 28, 1990, 11:59 AM CDT (16:59 UTC)
Expired
Jul 28, 1990, 1:00 PM CDT
In force
61 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Antelope County, NE, Knox 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, 5.0 hours before the alert went out and 180 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 1990-07-28Temperature 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 1990-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939Sfc1 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
3621 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
59 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 281659
SVROFK
NEC003-107-281800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORFOLK NE
1159 AM CDT SAT JUL 28 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 100 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE NORTHEAST PART OF NEBRASKA
      ANTELOPE...KNOX

AT 1155 AM CDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM
50 MILES NORTHWEST OF NORFOLK...NEAR CENTER TO 45 MILES WEST OF
NORFOLK...NEAR CLEARWATER.  THIS LINE OF STORMS WAS MOVING TO THE
EAST AT 20 MPH.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING
AREA.  SEVERE THUNDERSTORMS CAN ALSO PRODUCE A TORNADO WITH LITTLE
OR NO WARNING.

IF YOU ARE OUTSIDE...TAKE SHELTER IN A STRONG BUILDING.  REMAIN
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.  TAKE SHELTER
IN AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

 BOWMAN

Nearby

Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning in 1990

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.