Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 35, NWS North Platte, NE

June 12, 1994Boyd County, Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 12, 1994, 4:24 AM CDT for Boyd County, Holt County, Nebraska. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1994, 4:24 AM CDT (09:24 UTC)
Expired
Jun 12, 1994, 5:30 AM CDT
In force
66 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Boyd County, NE, Holt County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 9.4 hours before the alert went out and 229 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 1994-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 483 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, N. Platte/Lee Bi, NE at 00:00Z on 1994-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
483 J/kg
Mixed-layer CIN
-40 J/kg
Mixed-layer LCL
1948 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KOFK 120926 RRA
SVROFK
NEC015-089-121030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
424 AM CDT SUN JUN 12 1994
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL NEBRASKA
 
   ...BOYD COUNTY...NORTHERN HOLT COUNTY
 
AT 423 AM...RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTH OF
ONEILL...MOVING SOUTHEAST AT 25 MPH. THE TOWNS OF BUTTE AND SPENCER ARE
IN THE PATH OF THIS STORM.
 
PEOPLE IN THE PATH OF THIS STORM SHOULD TAKE SHELTER IMMEDIATELY.
PREPARE FOR DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND VERY
HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA.
 
 
CB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 3:53 AM CDTSevere Thunderstorm WarningLBFKnox37 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.