Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 77, NWS North Platte, NE

July 4, 1994Antelope County, Knox County, Pierce County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 4, 1994, 10:54 PM CDT for Antelope County, Knox County, Pierce County, Nebraska. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1994, 10:54 PM CDT (03:54 UTC)
Expired
Jul 5, 1994, 12:00 AM CDT
In force
66 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Antelope County, NE, Knox County, NE, Pierce County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.9 hours before the alert went out and 169 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, Omaha, NE at 00:00Z on 1994-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3643 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, Omaha, NE at 00:00Z on 1994-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
3643 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1098 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
232 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.9

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KOFK 050356 RRA
SVROFK
NEC011-141-003-107-119-139-050500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
1054 PM CDT MON JUL 4 1994
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL NEBRASKA
 
   ...BOONE COUNTY
 
IN EAST CENTRAL NEBRASKA
 
   ...PLATTE COUNTY
 
IN NORTHEAST NEBRASKA
 
   ...ANTELOPE COUNTY...KNOX COUNTY...MADISON COUNTY
   ...PIERCE COUNTY
 
AT 1055 PM CDT A LINE OF RAPIDLY MOVING SEVERE THUNDERSTORMS WERE MOVING
RAPIDLY INTO NORTHEAST NEBRASKA. THE LINE OF STORMS WAS LOCATED FROM 35
MILES NORTH OF O NEILL...TO 15 MILES EAST OF O NEILL...TO 50 MILES
SOUTHEAST OF O NEILL AND THE STORMS WERE PRODUCING DAMAGING WINDS AND
HAIL AS THE MOVE EAST AT 40 MPH.
 
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.  REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE A TORNADO WITH LITTLE OR NO WARNING.
 
BOWMAN

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 4, 8:25 PM CDT, 2 hours 29 minutes before
NEZ023>025-035>038-057>059-069>071-050225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
824 PM CDT MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH UNTIL 2 AM CDT FOR ALL OF SOUTHWEST AND
   WEST CENTRAL NEBRASKA EXCEPT FOR CHASE...HAYES AND FRONTIER
   COUNTIES...

AT 820 PM CDT VERY STRONG THUNDERSTORMS WERE CONTINUING TO BUILD AND
MOVE ACROSS WEST CENTRAL NEBRASKA.  THE STRONGEST STORMS WERE LOCATED
JUST SOUTH OF TRYON OR ABOUT 25 MILES NORTH NORTHWEST OF NORTH PLATTE
AND ALONG LAKE MCCONAUGHY OR ABOUT 55 MILES WEST OF NORTH PLATTE.  THESE
STORMS ARE NOW MOVING A LITTLE SOUTHEAST AT 30 MILES AN HOUR.
RESIDENTS OF THE OGALLALA AREA AND BOATERS AND CAMPERS ON AND AROUND
LAKE MCCONAUGHY SHOULD MOVE TO A PLACE OF SAFETY IMMEDIATELY.  BODIES
OF OPEN WATER ARE VERY DANGEROUS IN THIS TYPE OF SITUATION.

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

REMEMBER...LIGHTNING MAY STRIKE SOME MILES AWAY FROM THE PARENT
CLOUD.  PRECAUTIONS SHOULD BE TAKEN EVEN THOUGH THE THUNDERSTORM IS
NOT DIRECTLY OVERHEAD.

MONSON
Special weather statement, Jul 4, 8:28 PM CDT, 2 hours 26 minutes before
NEZ005-050230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF
728 PM MDT MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH FOR CHERRY COUNTY IN EFFECT UNTIL 1AM MDT
    (2 AM CDT)...

AT 727 PM MDT RADAR INDICATED AREAS OF WIDE SPREAD SHOWERS AND ISOLATED
THUNDERSTORMS IN PARTS OF CHERRY COUNTY.  THE STRONGEST STORM WAS LOCATED
5 MILES SOUTHWEST OF BROWNLEE OR 5 MILES NORTHEAST OF MULLEN MOVING EAST
AT 30 MILES PER HOUR.

RESIDENTS SHOULD BE ALERT FOR BRIEF HEAVY RAIN...GUSTY WIND...DEADLY
LIGHTNING AND SOME SMALL HAIL IN THE LIKELY EVENT THAT THEY WILL OCCUR
WITH THE STORMS OVER CHERRY COUNTY THROUGH 830 PM MDT (930 PM CDT)
EASTLACK
Special weather statement, Jul 4, 8:56 PM CDT, 1 hour 58 minutes before
NEZ023>025-035>038-057>059-069>071-050300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
855 PM CDT MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH UNTIL 2 AM CDT FOR ALL OF SOUTHWEST AND
   WEST CENTRAL NEBRASKA EXCEPT FOR CHASE...HAYES AND FRONTIER
   COUNTIES...

AT 855 PM CDT INTENSE THUNDERSTORMS WERE LOCATED ACROSS KEITH COUNTY OF
WEST CENTRAL NEBRASKA FROM ABOUT 35 MILES TO 50 MILES WEST OF NORTH
PLATTE.  PEA TO MARBLE SIZE HAIL HAS BEEN REPORTED WITH THESE STORMS
IN THE LAKE MCCONAUGHY AREA.  THESE STORMS ARE MOVING SOUTHEAST AT 35
MILES AN HOUR AND ARE MOVING TOWARD THE COMMUNITIES OF PAXTON AND
SUTHERLAND.

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

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

STAY TUNED TO NOAA WEATHER RADIO...RADIO OR TELEVISION FOR THE
LATEST UPDATES AND POSSIBLE WARNINGS CONCERNING THIS DANGEROUS
WEATHER SITUATION.

MONSON
Special weather statement, Jul 4, 9:27 PM CDT, 1 hour 27 minutes before
NEZ005-050330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF
827 PM MDT MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH CONTINUES FOR CHERRY COUNTY UNTIL 1AM MDT
    (2 AM CDT)...

AT 826 PM MDT RADAR SHOWED A LARGE AREA OF SHOWERS AND CONTINUING TO
EXIST OVER MOST OF CHERRY COUNTY.  THE MORE MODERATE SHOWERS WERE
OCCURING IN THE EASTERN HALF OF CHERRY COUNTY. THE SHOWERS CONTINUE
TO MOVE TO THE NORTHEAST AT 30 MILES PER HOUR.

RESIDENTS SHOULD BE ALERT FOR BRIEF HEAVY RAIN...GUSTY WIND...DEADLY
LIGHTNING AND SOME SMALL HAIL IN THE POSSIBLE EVENT THAT THEY WILL
OCCUR WITH THE STORMS OVER CHERRY COUNTY THROUGH 930 PM MDT (1030 PM CDT)
EASTLACK

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Special weather statement, Jul 4, 9:39 PM CDT, 1 hour 15 minutes before
NEZ023>025-035>038-057>059-050340-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
939 PM CDT (839 PM MDT) MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH UNTIL 2 AM CDT FOR ALL OF WEST CENTRAL
   NEBRASKA...

AT 935 PM CDT THE SEVERE THUNDERSTORM WARNING FOR KEITH COUNTY WAS NO
LONGER IN EFFECT AS THE THUNDERSTORM HAS DECREASED IN INTENSITY.  VERY
STRONG THUNDERSTORMS WERE STILL MOVING ACROSS KEITH COUNTY AND ALSO
MCPHERSON COUNTY.  THE STRONGEST STORMS WERE LOCATED ABOUT 5 MILES
NORTHEAST OF KEYSTONE OR ABOUT 40 MILES WEST NORTHWEST OF NORTH PLATTE
AND ANOTHER ABOUT 5 MILES SOUTH OF TRYON OR ABOUT 25 MILES NORTH
NORTHWEST OF NORTH PLATTE.  THESE STORMS MAY CONTAIN SMALL HAIL ALONG
WITH GUSTY WINDS FROM 35 TO 45 MILES AN HOUR.

THE STORM SOUTH OF TRYON APPEARS TO BE HEADING FOR THE COMMUNITY OF
STAPLETON.  RESIDENTS OF STAPLETON SHOULD BE PREPARED TO TAKE COVER
AS THIS STORM APPROACHES.

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.

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

MONSON
Special weather statement, Jul 4, 10:26 PM CDT, 28 minutes before
NEZ005-050430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE VALENTINE NE
ISSUED BY SCOTTSBLUFF
926 PM MDT MON JUL 4 1994

...SEVERE THUNDERSTORM WATCH CONTINUES FOR CHERRY COUNTY UNTIL 1AM MDT
    (2 AM CDT)...

AT 925 PM MDT RADAR SHOWED A LARGE AREA OF LIGHT SHOWERS CONTINUING TO
EXIST OVER MOST OF CHERRY COUNTY.  THE THE SHOWERS CONTINUE TO MOVE TO
TO THE EAST AT 25 MILES PER HOUR.

RESIDENTS SHOULD BE ALERT FOR BRIEF HEAVY RAIN...GUSTY WIND...DEADLY
LIGHTNING AND SOME SMALL HAIL IN THE POSSIBLE EVENT THAT THEY WILL
OCCUR WITH THE STORMS OVER CHERRY COUNTY THROUGH 1030 PM MDT(1130 PM CDT)
EASTLACK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:21 PM CDTSevere Thunderstorm WarningLBFHooker39 min
Jul 4, 8:11 PM CDTSevere Thunderstorm WarningLBFBoyd34 min
Jul 4, 9:59 PM CDTSevere Thunderstorm WarningLBFKeith31 min
Jul 4, 10:22 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt38 min
Jul 4, 10:22 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler38 min
Jul 4, 10:30 PM CDTSevere Thunderstorm WarningLBFKeith30 min
Jul 4, 10:54 PM CDTSevere Thunderstorm WarningLBFBoone, Madison, Platte66 min
Jul 4, 11:04 PM CDTSevere Thunderstorm WarningLBFKeith, McPherson56 min
Jul 4, 11:49 PM CDTSevere Thunderstorm WarningLBFColfax, Cuming, Stanton, Wayne56 min
Jul 4, 11:49 PM CDTSevere Thunderstorm WarningLBFCedar56 min
Jul 4, 11:52 PM CDTSevere Thunderstorm WarningLBFLincoln38 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.