Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 71, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 12, 1986, 2:12 AM CDT for Custer County, Nebraska. It was in force for 63 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
- Jul 12, 1986, 2:12 AM CDT (07:12 UTC)
- Expired
- Jul 12, 1986, 3:15 AM CDT
- In force
- 63 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Custer 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 |
|---|---|---|---|
| Jul 12, 2:25 AM CDT | Hail 1 | Custer, 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, 7.2 hours before the alert went out and 79 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
- 963 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1681 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 120712 SVRLBF NEC041-120815- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 212 AM CDT SAT JUL 12 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 315 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF CENTRAL NEBRASKA...CUSTER A LINE OF STRONG THUNDERSTORMS WAS IN NORTHERN CUSTER COUNTY MOVING SOUTHEAST AT 45 MPH. WITH THE STRONGEST STORM NEAR JUST NORTH OF MERNA.
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 11, 9:36 PM CDT, 4 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 935 PM CDT FRI JUL 11 1986 AT 930 PM CDT AN INTENSE THUNDERSTORM WAS LOCATED IN SOUTHEAST LINCOLN COUNTY ABOUT 23 MILES SOUTHEAST OF NORTH PLATTE. THIS THUNDERSTORM IS THE SAME ONE IN WHICH LARGE HAIL AND NUMEROUS REPORTS OF FUNNEL CLOUDS WERE RECEIVED. THE WARNING FOR EAST LINCOLN COUNTY EXPIRED AT 930 PM CDT AND NO NEW WARNINGS WILL BE ISSUED AS THE THUNDERSTORM IS MOVING OUT O(F LINCOLN COUNTY. MONSON
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 7:57 PM CDT | Tornado Warning | LBF | Lincoln | 18 min |
| Jul 11, 8:16 PM CDT | Tornado Warning | LBF | Lincoln | 14 min |
| Jul 11, 8:30 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 60 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.