Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 93, NWS North Platte, NE

July 6, 1994McPherson County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 6, 1994, 9:57 PM CDT for McPherson County, Nebraska. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1994, 9:57 PM CDT (02:57 UTC)
Expired
Jul 6, 1994, 11:00 PM CDT
In force
63 min
Issued by
NWS North Platte, NE
Area
Whole counties

County McPherson County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.0 hours before the alert went out and 62 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 070301
SVRLBF
NEC117-070400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
957 PM CDT WED JUL 6 1994
 
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL NEBRASKA
 
   ...MC PHERSON COUNTY
 
AT 955 PM CDT RADAR INDICATED SEVERE THUNDERSTORMS EXTENDING FROM 15
MILES WEST OF TRYON TO 15 MILES SOUTHWEST OF TRYON. THESE STORMS WERE
MOVING EAST AT 15 MILES AN HOUR. TRYON IS ABOUT 30 MILES NORTH
NORTHWEST OF NORTH PLATTE. LARGE HAIL ALONG WITH VERY STRONG WINDS ARE
LIKELY WITH THESE STORMS.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
MONSON 0259Z

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, 4:13 PM CDT, 5 hours 44 minutes before
NEZ023-035-057-062215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
413 PM CDT (313 PM MDT) WED JUL 6 1994

...TORNADO WATCH FOR GRANT...ARTHUR AND KEITH COUNTIES TIL 800 PM MDT...

AT 305 PM MDT (405 PM CDT) RADAR INDICATED THUNDERSTORMS DEVELOPING
RAPIDLY ACROSS GRANT COUNTY.  AN AREA OF SHOWERS AND THUNDERSTORMS
STRETCHED FROM 70 MILES NORTHWEST OF NORTH PLATTE NEAR WHITMAN TO 85
MILES NORTHWEST OF NORTH PLATTE IN WESTERN GRANT COUNTY.

THE STRONGEST OF THESE STORMS WAS 5 MILES NORTHEAST OF HYANNIS OR ABOUT
75 MILES SOUTHWEST OF VALENTINE.  ALL OF THESE STORMS ARE MOVING TO THE
NORTH AT 20 MILES AN HOUR.  THESE STORMS ARE CAPABLE OF PRODUCING HEAVY
RAIN...STRONG GUSTY WINDS AND SMALL HAIL.

IF YOU PLAN TO BE OUTDOORS THIS EVENING...CHECK THE LATEST WEATHER
INFORMATION AND KEEP A WEATHER EYE ON THE SKY.

FAUCETTE
Special weather statement, Jul 6, 9:19 PM CDT, 38 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, 7:01 PM CDTSevere Thunderstorm WarningLBFGrant, Hooker59 min
Jul 6, 8:03 PM CDTSevere Thunderstorm WarningLBFHooker57 min
Jul 6, 9:22 PM CDTSevere Thunderstorm WarningLBFHooker, McPherson, Thomas68 min
Jul 6, 10:17 PM CDTSevere Thunderstorm WarningLBFKeith, McPherson58 min
Jul 6, 10:24 PM CDTSevere 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.