Alert archive / Nebraska / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 152, NWS North Platte, NE

September 20, 1994Madison County, Pierce County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Sep 20, 1994, 7:42 PM CDT for Madison County, Pierce County, Nebraska. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Sep 20, 1994, 7:42 PM CDT (00:42 UTC)
Expired
Sep 20, 1994, 8:45 PM CDT
In force
63 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Madison County, NE, Pierce County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 0.7 hours before the alert went out and 133 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 1994-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 190 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 1994-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
190 J/kg
Mixed-layer CIN
-98 J/kg
Mixed-layer LCL
2268 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KOFK 210042 RRA
SVROFK
NEC119-139-210145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORFOLK NE
742 PM CDT TUE SEP 20 1994
 
THE NATIONAL WEATHER SERVICE IN NORFOLK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST NEBRASKA
 
   ...NORTHERN MADISON COUNTY...PIERCE COUNTY
 
AT 742 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 15 MILES NORTH
AND WEST OF NORFOLK IN PIERCE COUNTY. THE STORM IS MOVING EAST AT 15 MPH
AND HAS PRODUCED GOLF BALL SIZED HAIL AT PIERCE.
 
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.
 
TDK
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 8:15 PM CDTSevere Thunderstorm WarningLBFCedar, Wayne60 min
Sep 20, 8:44 PM CDTSevere Thunderstorm WarningLBFMadison, Stanton46 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.