Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 71, NWS North Platte, NE

July 26, 1990Frontier County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jul 26, 1990, 7:27 PM CDT for Frontier County, Nebraska. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 26, 1990, 7:27 PM CDT (00:27 UTC)
Expired
Jul 26, 1990, 8:30 PM CDT
In force
63 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Frontier County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.5 hours before the alert went out and 69 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 1990-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1319 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 1990-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
1319 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
1997 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
50 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 
TTAA00 KLBF 270027
SVRLBF
NEC063-270130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORTH PLATTE NE
727 PM CDT THU JUL 26 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE SOUTHWEST PART OF NEBRASKA
      SOUTHERN FRONTIER

AT 725 PM CDT RADAR DETECTED A SEVERE THUNDERSTORM JUST EAST OF
HUGH BUTLER LAKE IN SOUTHWEST FRONTIER COUNTY. THIS THUNDERSTORM
WAS MOVING EAST AT 25 MILES PER HOUR.

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.

 ABBAS 0030Z

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 26, 4:36 PM CDT, 2 hours 51 minutes before
NEZ006-012-017-262230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
330 PM CDT THU JUL 26 1990

...THUNDERSTORMS MOVING OUT OF THE PANHANDLE INTO WEST CENTRAL NE...
...TORNADO WATCH FOR WESTERN COUNTIES UNTIL 9PM MDT...

AT 330 PM MDT...THUNDERSTORMS WERE MOVING OUT OF THE PANHANDLE
INTO WEST CENTRAL NEBRASKA. THE STRONGEST THUNDERSTORMS WAS 20
MILES WEST OF ARTHUR IN ARTHUR COUNTY WHICH IS 72 MILES WEST NORTHWEST
OF NORTH PLATTE, NEBRASKA.
THE THUNDERSTORMS WAS MOVING EAST NORTHEAST AT 15 MILES PER HOUR.

THE THUNDERSTORMS CAN PRODUCE BRIEF HEAVY RAIN..DANGEROUS LIGHTNING..
HAIL AND GUSTY SURFACE WINDS OF 30 TO 40 MPH.

HETZKE
Special weather statement, Jul 26, 5:42 PM CDT, 1 hour 45 minutes before
NEZ006-012-017-262330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
430 PM CDT THU JUL 26 1990

...THUNDERSTORMS MOVING OUT OF THE PANHANDLE INTO WEST CENTRAL NE...
...TORNADO WATCH FOR WESTERN COUNTIES UNTIL 9PM MDT...

AT 430 PM MDT...THUNDERSTORMS CONTINUE TO MOVE OUT OF THE PANHANDLE
INTO WEST CENTRAL NEBRASKA. THE STRONGEST THUNDERSTORMS WAS 25
MILES NORTHWEST OF OGALLALA IN WESTERN KEITH COUNTY OR 75 MILES WEST
NORTHWEST OF NORTH PLATTE, NEBRASKA.
THE THUNDERSTORMS WERE MOVING EAST AT 15 MILES PER HOUR WILL BE
MOVING INTO OGALLALA BY 515 PM MDT.

THE THUNDERSTORMS WERE PRODUCEING BRIEF HEAVY RAIN..DANGEROUS LIGHTNING..
HAIL AND GUSTY SURFACE WINDS OF 30 TO 40 MPH.

HETZKE
Special weather statement, Jul 26, 6:46 PM CDT, 41 minutes before
NEZ006-012-017-270030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
640 PM CDT THU JUL 26 1990

...THUNDERSTORMS ACROSS SOUTHWEST AND WEST CENTRAL NE...
...TORNADO WATCH FOR WESTERN COUNTIES UNTIL 9PM MDT...

AT 640 PM CDT...THUNDERSTORMS WERE EXTENDING ACROSS WESTERN ARTHUR
AND KEITH COUNTRY. THE STRONGEST THUNDERSTORMS WAS 25 MILES
NORTHWEST OF OGALLALA IN WESTERN KEITH COUNTY OR 75 MILES WEST
NORTHWEST OF NORTH PLATTE, NEBRASKA.
ANOTHER AREA OF THUNDERSTORMS WERE NORTH OF MCCOOK IN NORTHERN RED
WILLOW COUNTY OR 50 MILES SOUTH OF NORTH PLATTE TO NEAR HAYES CENTER
CENTRAL HAYES COUNTY OR 37 MILES SOUTHWEST OF NORTH PLATTE.
THE THUNDERSTORMS WERE MOVING EAST AT 10 MPHi.
THE THUNDERSTORMS CAN PRODUCE BRIEF HEAVY RAIN..DANGEROUS LIGHTNING..
HAIL AND GUSTY SURFACE WINDS OF 30 TO 40 MPH.

HETZKE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 8:49 PM CDTSevere Thunderstorm WarningLBFKeith56 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning in 1990

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.