Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 39, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jun 21, 1986, 6:25 PM MDT for Keith County, Nebraska. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 21, 1986, 6:25 PM MDT (00:25 UTC)
- Expired
- Jun 21, 1986, 7:30 PM MDT
- In force
- 65 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Keith County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 21, 7:05 PM MDT | Thunderstorm Wind 0 | Keith, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.4 hours before the alert went out and 89 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.
- Mixed-layer CAPE
- 2243 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 2007 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 220025 SVRLBF NEC005-101-075-220130- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 625 PM MDT SAT JUN 21 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF WEST CENTRAL NEBRASKA...ARTHUR...KEITH AND GRANT AT 615 PM MDT 65 MILE AN HOUR WINDS WERE REPORTED AT LEMOYNE NEBRASKA IN KEITH COUNTY WHICH IS 55 MILES WEST OF NORTH PLATTE NEBRASKA. IF THREATENING WEATHER APPROACHES...GET TO A REINFORCED SHELTER AND PREPARE FOR STRONG DAMAGING WIND..LARGE HAIL..VERY HEAVY RAIN AND DANGEROUS LIGHTNING. REMEMBER...THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT!! REPORTS OF SEVERE WEATHER OR DAMAGE CAN BE GIVEN TO A LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. SEVERE THUNDERSTORMS PRODUCE DAMAGING W&INDS IN EXCESS OF 60 MPH.. LARGE HAIL GREATER THAN 3/4 INCH IN DIAMETER..DEADLY LIGHTNING AND VERY HEAVY RAIN THAT CAN FLOOD A LOW LYING AREA QUICKLY. MEYER 0024Z
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 21, 5:59 PM MDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 755 PM CDT SAT JUN 21 1986 THUNDERSTROMS HAD DEVELOPED ACROSS SOUTHWEST AND WEST CENTRAL NEBRASKA THIS EVENING. A VERY STRONG THUNDERSTORM WAS 5 MILES NORTH OF ARTHUR NEBRASKA IN ARTHUR COUNTY OF WEST CENTRAL NEBRASKA WHICH IS ABOUT 55 MILES NORTHWEST OF NORTH PLATTE NEBRASKA. THE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. PERSONS IN THE VICINITY OF THESE THUNDERSTORMS CAN EXPECT SOME HAIL.. HEAVY RAIN..GUSTY WIND AND FREQUENT LIGHTNING. MEYER
Special weather statement, Jun 21, 6:03 PM MDT, 22 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION FOR THE TIME... NATIONAL WEATHER SERVICE NORTH PLATTE NE 755 PM CDT SAT JUN 21 1986 THUNDERSTROMS HAD DEVELOPED ACROSS SOUTHWEST AND WEST CENTRAL NEBRASKA THIS EVENING. AT 755 PM CDT A VERY STRONG THUNDERSTORM WAS 5 MILES NORTH OF ARTHUR NEBRASKA IN ARTHUR COUNTY OF WEST CENTRAL NEBRASKA WHICH IS ABOUT 55 MILES NORTHWEST OF NORTH PLATTE NEBRASKA. THE THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. PERSONS IN THE VICINITY OF THESE THUNDERSTORMS CAN EXPECT SOME HAIL.. HEAVY RAIN..GUSTY WIND AND FREQUENT LIGHTNING. MEYER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 6:25 PM MDT | Severe Thunderstorm Warning | LBF | Arthur, Grant | 65 min |
| Jun 21, 7:17 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln, McPherson | 73 min |
| Jun 21, 7:17 PM MDT | Severe Thunderstorm Warning | LBF | Hooker | 73 min |
| Jun 21, 7:31 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 29 min |
| Jun 21, 7:46 PM MDT | Severe Thunderstorm Warning | LBF | Thomas | 44 min |
| Jun 21, 7:56 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 54 min |
| Jun 21, 8:23 PM MDT | Severe Thunderstorm Warning | LBF | Custer | 57 min |
| Jun 21, 8:26 PM MDT | Severe Thunderstorm Warning | LBF | Blaine, Brown, Loup, Rock | 39 min |
| Jun 21, 8:26 PM MDT | Tornado Warning | LBF | Custer | 24 min |
| Jun 21, 9:36 PM MDT | Severe Thunderstorm Warning | LBF | Wheeler | 24 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1986Every severe thunderstorm warning in 1986
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.