Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 20, NWS North Platte, NE

June 1, 1990Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 1, 1990, 8:31 PM CDT for Keya Paha County, Nebraska. It was in force for 29 min.

The area

The counties it named.

The facts

Issued: Jun 1, 1990, 8:31 PM CDT (01:31 UTC)
Expired: Jun 1, 1990, 9:00 PM CDT
In force: 29 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Keya Paha 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, 1.5 hours before the alert went out and 208 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1876 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1838 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOFK 020131
SVROFK
NEC103-020200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORFOLK NE
831 PM CDT FRI JUN 1 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTH CENTRAL PART OF NEBRASKA
      EASTERN KEYA PAHA

AT 825 PM CDT NORFOLK RADAR INDICATED A SEVERE THUNDERSTORM ABOUT
15 MILES SOUTHWEST OF JAMISON MOVING TO THE NORTHEAST AT 25 TO 30
MILES AN HOUR.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING
AREA.  SEVERE THUNDERSTORMS CAN ALSO PRODUCE A TORNADO WITH LITTLE
OR NO WARNING.

 A TORNADO WATCH REMAINS IN EFFECT FOR ALL OF NOR CENTRAL AND THE
 WESTERN COUNTIES OF NORTHEAST NEBRASKA UNTIL 1 AM CDT SATURDAY
 MORNING

 GVA

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, Jun 1, 4:16 PM CDT, 4 hours 15 minutes before

NEZ006-012210-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
310 PM MDT FRI JUN 1 1990

...TORNADO WATCH IN EFFECT WESTERN AND CENTRAL NEBRASKA UNTIL
9 PM MDT.

AT 310 PM MDT INTENSE THUNDERSTORMS WERE MOVING INTO SOUTHWEST
GRANT COUNTY. THIS IS 75 MILES NORTHWEST OF NORTH PLATTE NEBRASKA.
THESE THUNDERSTORMS MAY PRODUCE HEAVY RAIN, HAIL, GUSTY SURFACE WINDS,
AND DANGEROUS LIGHTNING.

THE THUNDERSTORMS WERE MOVING NORTHNORTHEAST AT 20 MPH.

SMALLFIELD

Special weather statement, Jun 1, 7:16 PM CDT, 1 hour 15 minutes before

NEZ006-007-012-016-020100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
715 PM CDT FRI JUN 1 1990

...TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM CDT FOR SOUTHWEST
   NEBRASKA...

AT 700 PM CDT THUNDERSTORMS WITH VERY HEAVY RAIN WERE LOCATED
JUST SOUTHEAST OF BRADY...OR ABOUT 20 MILES EAST SOUTHEAST OF
NORTH PLATTE NEBRASKA.  THESE THUNDERSTORMS PRODUCED PEA TO
MARBLE SIZE HAIL IN BRADY AND NEAR MAXWELL.

THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 35 MILES PER HOUR.

OTHER SCATTERED THUNDERSTORMS WERE LOCATED FROM SOUTHEAST LINCOLN
COUNTY NORTH THROUGH EASTERN THOMAS COUNTY.  ANOTHER THUNDERSTORM
HAD DEVELOPED OVER NORTHERN DUNDY COUNTY.

THESE THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 35 MILES PER HOUR.

THE SEVERE THUNDERSTORM WARNING FOR EASTERN LINCOLN COUNTY WAS
ALLOWED TO EXPIRE AT 700 PM CDT.

ABBAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 8:05 PM CDT	Tornado Warning	LBF	Custer	25 min
Jun 1, 8:15 PM CDT	Tornado Warning	LBF	Custer	45 min
Jun 1, 8:32 PM CDT	Tornado Warning	LBF	Custer	28 min
Jun 1, 8:58 PM CDT	Tornado Warning	LBF	Custer	32 min
Jun 1, 8:59 PM CDT	Tornado Warning	LBF	Loup	31 min
Jun 1, 9:17 PM CDT	Tornado Warning	LBF	Perkins	28 min
Jun 1, 9:21 PM CDT	Severe Thunderstorm Warning	LBF	Keith	54 min
Jun 1, 9:38 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt	42 min
Jun 1, 9:53 PM CDT	Severe Thunderstorm Warning	LBF	Lincoln	67 min
Jun 1, 11:12 PM CDT	Severe Thunderstorm Warning	LBF	Custer	63 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1990 Every 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.