Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 94, NWS North Platte, NE

July 6, 1994Keith County, McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 6, 1994, 9:17 PM MDT for Keith County, McPherson County, Nebraska. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1994, 9:17 PM MDT (03:17 UTC)
Expired
Jul 6, 1994, 10:15 PM MDT
In force
58 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Keith County, NE, McPherson County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.3 hours before the alert went out and 70 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 1994-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2046 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 1994-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 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
2046 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
2067 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.9

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 6, 8:19 PM MDT, 58 minutes before
NEZ005-070315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF NE
818 PM MDT (918 PM CDT) WED JUL 6 1994

...A TORNADO WATCH FOR CHERRY COUNTY UNTIL 11 PM MDT/MIDNIGHT CDT...

AT 815 PM MDT...RADAR INDICATED WIDESPREAD RAIN SHOWERS OVER CHERRY
COUNTY WITH THUNDERSTORMS OVER THE EAST PARTS OF THE COUNTY.  THE
THUNDERSTORMS WERE LOCATED 40 MILES SOUTH OF VALENTINE...AND JUST A FEW
MILES NORTH OF MULLEN.

THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH.

PEOPLE ESPECIALLY OVER EASTERN CHERRY COUNTY SHOULD BE ON THE LOOKOUT
FOR DANGEROUS LIGHTNING AND SMALL HAIL THROUGH 915 PM MDT/1015 PM CDT.
KYLE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 6:01 PM MDTSevere Thunderstorm WarningLBFGrant, Hooker59 min
Jul 6, 7:03 PM MDTSevere Thunderstorm WarningLBFHooker57 min
Jul 6, 8:22 PM MDTSevere Thunderstorm WarningLBFHooker, McPherson, Thomas68 min
Jul 6, 8:57 PM MDTSevere Thunderstorm WarningLBFMcPherson63 min
Jul 6, 9:24 PM MDTSevere Thunderstorm WarningLBFKeith, Perkins51 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.