Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 121, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Sep 18, 1986, 9:01 AM CDT for Brown County, Rock County, Nebraska. It was in force for 59 min.
The area
The counties it named.
The facts
- Issued
- Sep 18, 1986, 9:01 AM CDT (14:01 UTC)
- Expired
- Sep 18, 1986, 10:00 AM CDT
- In force
- 59 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Brown County, NE, Rock 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 12:00Z, 2.0 hours before the alert went out and 163 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
- 1232 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 579 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 373 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 7.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOFK 181401 SVROFK NEC017-149-181500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORFOLK NE 901 AM CDT THU SEP 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL NEBRASKA...NORTHEAST BROWN AND NORTHERN ROCK AT 858 AM A SEVERE THUNDERSTORM WAS 10 MILES SOUTHEAST OF AINSWORTH MOVING EAST NORTHEiAST AT 25 MPH. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DEADLY WINDS IN EXCESS OF 75 MPH...LARGE HAIL...KILLER LIGHTNING...AND TORRENTIAL RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. SMITH
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, Sep 18, 7:56 AM CDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 654 AM CDT THU SEP 18 1986 AT 648 AM CDT AN INTENSE THUNDERSTORM HAS MOVED FROM THE PANHANDLE OF NEBRASKA ACROSS THE NORTHERN PORTION OF GRANT COUNTY IN NEBRASKA. THE DEPUTY SHERIFF FROM ASHBY NEBRASKA..WHICH IS 39 MILES EAST ALLIANCE NEBRASKA REPORTED PEA TO MARBLE SIZE HAIL AND HEAVY RAINFALL. THIS STORM WAS MOVING NORTHEAST AT 20 MPH. HORN
Special weather statement, Sep 18, 8:08 AM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE VALENTINE NE 755 AM CDT THU SEP 18 1986 THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHERRY COUNTY OF NORTH- CENTRAL NEBRASKA REMAINS IN EFFECT UNTIL 830 AM CDT THIS THURSDAY MORNING. AT 745 AM CDT...RADAR SHOWED THE SEVERE THUNDERSTORM WAS 35 MILES SOUTH OF VALENTINE NEBRASKA MOVING EAST AT 25 MPH. THIS STORM IS STILL CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THE TRACK OF THIS STORM WILL TAKE IT OUT OF CHERRY COUNTY AND INTO BROWN COUNTY IN ABOUT 30 MINUTES. PEOPLE IN SOUTHEASTERN CHERRY AND SOUTHWESTERN BROWN COUNTIES OF THE NORTHCENTRAL NEBRASKA SHOULD REMAIN ALERT FOR THIS STORM EARLY THIS THURSDAY MORNING. RODDA
Special weather statement, Sep 18, 8:40 AM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE VALENTINE NE 835 AM CDT THU SEP 18 1986 THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CHERRY COUNTY OF NORTH- CENTRAL NEBRASKA HAS BEEN REISSUED AND WILL BE IN EFFECT UNTIL 1030 AM CDT THIS THURSDAY MORNING. AT 815 AM CDT...RADAR SHOWED THE SEVERE THUNDERSTORM WAS 30 MILES WEST OF MULLEN NEBRASKA MOVING EAST AT 25 MPH. THIS STORM IS CAPABLE OF PRODUCING LARGE HAIL VERY HEAVY RAINS AND DAMAGING WI7NDS. THE TRACK OF THIS STORM WILL TAKE IT ALONG THE SOUTHERN PART OF CHERRY COUNTY...PERSONS IN SOUTHERN CHERRY COUNTY SHOULD REMAIN ALERT FOR THIS STORM AND GO TO A SAFE PLACE IF THIS STORM IS SPOTTED. RODDA
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 6:01 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 59 min |
| Sep 18, 7:00 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 60 min |
| Sep 18, 7:58 AM CDT | Severe Thunderstorm Warning | LBF | Brown | 62 min |
| Sep 18, 8:05 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 25 min |
| Sep 18, 8:30 AM CDT | Severe Thunderstorm Warning | LBF | Cherry | 2 hr |
| Sep 18, 2:38 PM CDT | Severe Thunderstorm Warning | LBF | Boone | 42 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; the sounding from the Mesonet's radiosonde archive.