Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 34, NWS North Platte, NE

June 12, 1994Knox County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 12, 1994, 3:53 AM CDT for Knox County, Nebraska. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1994, 3:53 AM CDT (08:53 UTC)
Expired
Jun 12, 1994, 4:30 AM CDT
In force
37 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Knox County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.9 hours before the alert went out and 193 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 1994-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 1994-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2204 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
71 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 
WUUS1 KOFK 120855 RRA
SVROFK
NEC107-120930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
353 AM CDT SUN JUN 12 1994
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST NEBRASKA
 
   ...KNOX COUNTY
 
AT 350 AM...RADAR INDICATED A SEVERE THUNDERSTORM 60 MILES NORTHWEST OF
NORFOLK...JUST NORTH OF VERDIGRE...MOVING SOUTHEAST AT 25 MPH. LARGE
HAIL AND WINDS OF OVER 60 MPH ARE LIKELY WITH THIS STORM. THE TOWNS OF
VERDIGRE AND CREIGHTON ARE IN THE PATH OF THIS STORM.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD MOVE INSIDE A STRONG
BUILDING.  FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.  HEAVY RAINS QUICKLY FLOOD
ROADWAYS...DO NOT DRIVE INTO WATER COVERED ROADWAYS.
 
 
CB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 4:24 AM CDTSevere Thunderstorm WarningLBFBoyd, Holt66 min
Jun 12, 4:34 PM CDTSevere Thunderstorm WarningLBFAntelope21 min
Jun 12, 5:31 PM CDTSevere Thunderstorm WarningLBFLincoln29 min
Jun 12, 5:40 PM CDTSevere Thunderstorm WarningLBFFrontier, Hayes50 min
Jun 12, 6:08 PM CDTSevere Thunderstorm WarningLBFLincoln37 min
Jun 12, 6:27 PM CDTTornado WarningLBFPierce33 min
Jun 12, 6:30 PM CDTSevere Thunderstorm WarningLBFFrontier30 min
Jun 12, 6:45 PM CDTSevere Thunderstorm WarningLBFCuster45 min
Jun 12, 6:55 PM CDTTornado WarningLBFPierce, Wayne35 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.