Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 113, NWS North Platte, NE

July 23, 1994Custer County, Logan County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 23, 1994, 8:34 PM CDT for Custer County, Logan County, Nebraska. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jul 23, 1994, 8:34 PM CDT (01:34 UTC)
Expired
Jul 23, 1994, 9:30 PM CDT
In force
56 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Custer County, NE, Logan County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.6 hours before the alert went out and 57 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 1994-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1188 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 1994-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.19395878Sfc1 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
1188 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2077 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 240135 RRA
SVRLBF
NEC041-113-240230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
834 PM CDT SAT JUL 23 1994
 
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  930 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL NEBRASKA
 
   ...NORTHWESTERN CUSTER COUNTY
 
IN WEST CENTRAL NEBRASKA
 
   ...SOUTHERN LOGAN COUNTY
 
AT 830 PM CDT GOLFBALL SIZED HAIL WAS REPORTED 6 MILES WEST OF
STAPLETON...BY THE LOGAN COUNTY SHERIFF. THIS THUNDERSTORM WAS
MOVING EAST AT 10 MILES AN HOUR.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
 
SC
&

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 23, 4:20 PM CDT, 4 hours 14 minutes before
NEZ035-057-058-069-232225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
420 PM CDT (320 PM MDT) SAT JUL 23 1994

...SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT FOR ARTHUR...CHASE...KEITH
   AND PERKINS COUNTIES...

AT 315 PM MDT RADAR WAS NOT INDICATING ANY SHOWERS OR THUNDERSTORMS
ACROSS WEST CENTRAL OR SOUTHWEST NEBRASKA.

HOWEVER CONDITIONS ARE FAVORABLE FOR THE FORMATION OF THUNDERSTORMS...
WITH THE MAIN THREAT FROM THESE THUNDERSTORMS DAMAGING WINDS AND LARGE
HAIL.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

SC

SC
Special weather statement, Jul 23, 5:11 PM CDT, 3 hours 23 minutes before
NEZ035-057-058-069-232315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
512 PM CDT (412 PM MDT) SAT JUL 23 1994

...SEVERE THUNDERSTORM WATCH UNTIL 9 PM MDT FOR ARTHUR...CHASE...KEITH
   AND PERKINS COUNTIES...

AT 410 PM MDT RADAR SHOWED SCATTERED THUNDERSTORMS NEAR SIDNEY IN THE
SOUTHERN PANHANDLE OF NEBRASKA.  OTHER STRONG THUNDERSTORMS WITH A
HISTORY OF LARGE HAIL WERE LOCATED NEAR YUMA...IN NORTHEAST COLORADO.
A THUNDERSTORM WHICH WAS STILL DEVELOPING WAS LOCATED ABOUT 20 MILES
NORTHEAST OF NORTH PLATTE...OR JUST SOUTHEAST OF STAPLETON.

MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 20 MILES AN HOUR.

AT SIGNS OF AN IMPENDING STORM...TOWERING THUNDERHEADS...DARKENING
SKIES...LIGHTNING AND INCREASING WINDS...MOVE TO A PLACE OF SAFETY.

SC

SC
Special weather statement, Jul 23, 6:31 PM CDT, 2 hours 3 minutes before
NEZ023>025-035-036-057-058-069-240035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
632 PM CDT (532 PM MDT) SAT JUL 23 1994

...SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 9 PM MDT FOR PARTS OF
   SOUTHWEST AND WEST CENTRAL NEBRASKA...

AT 525 PM MDT (625 PM CDT) RADAR SHOWED AN AREA OF SCATTERED
THUNDERSTORMS MOVING INTO WEST CENTRAL AND SOUTHWEST NEBRASKA.

THIS AREA WAS LOCATED FROM 60 MILES SOUTHWEST TO 65 MILES NORTHWEST
TO 30 MILES NORTH OF NORTH PLATTE.  A THUNDERSTORM WITH VERY HEAVY
RAIN...GUSTY WINDS AND POSSIBLY SMALL HAIL WAS ABOUT 5 MILES NORTH OF
TRYON...OR 35 MILES NORTH OF NORTH PLATTE.  OTHER THUNDERSTORMS WITH
HEAVY RAIN WERE MOVING INTO THE WESTERN PARTS OF PERKINS AND CHASE
COUNTIES.

MOVEMENT WAS TO THE NORTHEAST AROUND 20 MILES AN HOUR.

IF YOU PLAN TO BE OUTDOORS THIS EVENING...CHECK THE LATEST WEATHER
INFORMATION AND KEEP A WEATHER EYE ON THE SKY.
SC
Special weather statement, Jul 23, 7:30 PM CDT, 1 hour 4 minutes before
NEZ023-035-036-057>059-069-240135-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
731 PM CDT (631 PM MDT) SAT JUL 23 1994

...A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 9 PM MDT (10 PM CDT)
   FOR PARTS OF SOUTHWEST AND WEST CENTRAL NEBRASKA...

AT 625 PM MDT (725 PM CDT) A STRONG THUNDERSTORM CONTAINING VERY HEAVY
RAIN...ALONG WITH POSSIBLE LARGE HAIL AND GUSTY WINDS...WAS LOCATED JUST
12 MILES SOUTHWEST OF THE COMMUNITY OF ARTHUR.  ARTHUR IS LOCATED 52
MILES WEST NORTHWEST OF NORTH PLATTE.  THIS THUNDERSTORM WAS MOVING EAST
AT 20 MILES AN HOUR.

OTHER SCATTERED THUNDERSTORMS WERE LOCATED OVER SOUTHERN MCPHERSON
AND THE NORTHWEST CORNER OF LINCOLN COUNTIES...OR FROM 35 MILES
NORTHWEST TO 30 MILES NORTH NORTHWEST OF NORTH PLATTE.  THESE
THUNDERSTORMS WERE ALSO MOVING TO THE EAST AROUND 20 MILES AN HOUR...
AND COULD PRODUCE BRIEF HEAVY RAIN AND SMALL HAIL.

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

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV
STATION FOR THE LATEST WEATHER INFORMATION.

SC
Special weather statement, Jul 23, 8:25 PM CDT, 9 minutes before
NEZ023>025-035>038-057>059-069>071-240230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
826 PM CDT SAT JUL 23 1994

...THUNDERSTORMS WERE WEAKENING RAPIDLY ACROSS THE REGION...

AT 825 PM CDT A BROAD AREA OF SHOWERS AND THUNDERSTORMS ENCOMPASSED
MUCH OF WEST CENTRAL AND SOUTHWEST NEBRASKA.  IN MOST AREAS THE
THUNDERSTORMS HAD WEAKENED SIGNIFICANTLY AND NO LONGER POSED A THREAT
OF PRODUCING SEVERE WEATHER.

THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR CALLAWAY...OR 35 MILES
EAST NORTHEAST OF NORTH PLATTE...AND IN THE EXTREME SOUTHEAST CORNER OF
CUSTER COUNTY...NEAR MASON CITY.  THESE THUNDERSTORMS COULD CAUSE
BRIEF HEAVY RAIN...DANGEROUS LIGHTNING...AND GUSTY WINDS AC\ROSS PARTS
OF CUSTER COUNTY.  MOVEMENT WAS SOUTHEAST AROUND 10 MILES AN HOUR.

SOME OF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS...DEADLY
LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN.
SC
Special weather statement, Jul 23, 8:26 PM CDT, 8 minutes before
NEZ023>025-035>038-057>059-069>071-240230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
826 PM CDT SAT JUL 23 1994

...THUNDERSTORMS WERE WEAKENING RAPIDLY ACROSS THE REGION...

AT 825 PM CDT A BROAD AREA OF SHOWERS AND THUNDERSTORMS ENCOMPASSED
MUCH OF WEST CENTRAL AND SOUTHWEST NEBRASKA.  IN MOST AREAS THE
THUNDERSTORMS HAD WEAKENED SIGNIFICANTLY AND NO LONGER POSED A THREAT
OF PRODUCING SEVERE WEATHER.

THE STRONGEST THUNDERSTORMS WERE LOCATED NEAR CALLAWAY...OR 35 MILES
EAST NORTHEAST OF NORTH PLATTE...AND IN THE EXTREME SOUTHEAST CORNER OF
CUSTER COUNTY...NEAR MASON CITY.  THESE THUNDERSTORMS COULD CAUSE
BRIEF HEAVY RAIN...DANGEROUS LIGHTNING...AND GUSTY WINDS ACROSS PARTS
OF CUSTER COUNTY.  MOVEMENT WAS SOUTHEAST AROUND 10 MILES AN HOUR.

SOME OF THESE STORMS MAY CONTAIN SMALL HAIL...GUSTY WINDS...DEADLY
LIGHTNING AND VERY HEAVY DOWNPOURS OF RAIN.
SC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 5:56 PM CDTSevere Thunderstorm WarningLBFMcPherson34 min
Jul 24, 6:21 PM CDTSevere Thunderstorm WarningLBFKeith, Lincoln54 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.