Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 95, NWS North Platte, NE

July 6, 1994Keith County, Perkins County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 6, 1994, 9:24 PM MDT for Keith County, Perkins County, Nebraska. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1994, 9:24 PM MDT (03:24 UTC)
Expired
Jul 6, 1994, 10:15 PM MDT
In force
51 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Keith County, NE, Perkins County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.4 hours before the alert went out and 89 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

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

000 
TTAA00 KLBF 070324
SVRLBF
NEC135-101-070415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORTH PLATTE NE
924 PM MDT WED JUL 6 1994

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1015 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTHWEST PART OF NEBRASKA
      NORTHEAST PERKINS...SOUTHEAST KEITH

...CORRECTION...TO CHANGE MCPERSON TO PERKINS COUNTY ON WARNING...
AT 905 PM MDT RADAR SHOWED A SEVERE THUNDERSTORM 10 MILES SOUTH
WEST OF PAXTON MOVING EAST NORTHEAST AT 15 MPH.  PAXTON IS 30
MILES WEST OF NORTH PLATTE.

IF YOU ARE IN THE AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY
HEAVY RAIN...AND DEADLY LIGHTNING.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A
TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT!!

THIS SLOW MOVING THUNDERSTORM MAY CAUSE ZFLOODING OF SMALL STREAMS
AND UNDERPASSES.  MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.

 RC

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, 1 hour 5 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, 9:17 PM MDTSevere Thunderstorm WarningLBFKeith, McPherson58 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.