Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 91, NWS Sioux Falls, SD

July 5, 1994Thurston County, Nebraska

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 5, 1994, 8:22 PM CDT for Thurston County, Nebraska. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Jul 5, 1994, 8:22 PM CDT (01:22 UTC)
Expired
Jul 5, 1994, 9:15 PM CDT
In force
53 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Thurston County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.4 hours before the alert went out and 94 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 00:00Z on 1994-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3368 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 1994-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 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
3368 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1281 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
108 m²/s²
Significant tornado parameter
0.8
Supercell composite
8.0

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KSUX 060124 RRA
SVRSUX
NEC173-060215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX CITY IA
822 PM CDT TUE JUL 5 1994
 
THE NATIONAL WEATHER SERVICE IN SIOUX CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST NEBRASKA
 
   ...THURSTON COUNTY
 
AT 821 AM CDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR ON THE
THURSTON AND WAYNE COUNTY LINE OR 30 MILES SOUTHWEST OF SIOUX CITY.
MOVEMENT WAS NORTHEAST AT 25 MILES AN HOUR. THIS STORM WILL AFFECT THE
TOWNS OF PENDER...WALTHILL AND WINNEBAGO BETWEEN 830 AND 900 PM. LARGE
HAIL TO 1 INCH IS POSSIBLE WITH THIS STORM.
 
 
 
THIS IS A DANGEROUS STORM!!  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WINDS...LARGE HAIL AND DEADLY LIGHTNING.
PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLE INSIDE A
STRONG BUILDING.
 
MICHELS

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 5, 11:04 PM CDTSevere Thunderstorm WarningFSDThurston41 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1994Every severe thunderstorm warning in 1994

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.