Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 56, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 11, 1987, 1:34 AM CDT for Holt County, Nebraska. It was in force for 56 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 11, 1987, 1:34 AM CDT (06:34 UTC)
- Expired
- Jul 11, 1987, 2:30 AM CDT
- In force
- 56 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Holt 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 11, 2:00 AM CDT | Thunderstorm Wind 0 | Holt, 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, 6.6 hours before the alert went out and 211 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
- 3373 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1858 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOFK 110634 SVROFK NEC089-110730- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORFOLK NE 134 AM CDT SAT JUL 11 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 230 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTH CENTRAL NEBRASKA...NORTHERN HOLT AT 125 AM CDT SEVERE THUNDERSTORMS WERE MOVING NORTHEAST AT ABOUT 50 MILES AN HOUR. 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF NORTH CENTRAL NEBRASKA UNTIL 5 AM CDT SUATURDAY MORNING. THE TORNADO WARNING FOR EASTERN BROWN COUNTY IS CANCELLED...BUT REMAINS IN EFFECT UNTIL 145 AM CDT FOR ROCK COUNTY. VAN ALLEN 0632Z
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 10, 8:11 PM CDT, 5 hours 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 810 PM CDT FRI JUL 10 1987 THUNDERSTORMS CONTINUED TO DISSAPATE ACROSS SOUTHWEST NEBRASKA THIS EVENING. AT 810 PM CDT ALL THE STRONG THUNDERSTORMS THAT WERE IN FRONTIER AND KEITH COUNTIES OF SOUTHWEST NEBRASKA HAD DISSAPATED. THERE IS STILL A CHANCE OF SCATTERED THUNDERSTORMS ACROSS SOUTHWEAST NEBRASKA TONIGHT BUT THEY ARE NO LONGER EXPECTED TO REACH LIMITS WHERE THEY PRODUCE LARGE HAIL AND DAMAGING WINDS. THIS WILL PROBABLY BE THE LAST SPECIAL WEATHER STATEMENT ISSUED BY THE NORTH PLATTE NATIONAL WEATHER SERVICE UNLESS STORMS WOULD REDEVELOP OR MOVE INTO SOUTHWEST NEBRASKA ONCE AGAIN. MEYER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:08 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 52 min |
| Jul 10, 8:22 PM CDT | Severe Thunderstorm Warning | LBF | Keya Paha | 68 min |
| Jul 10, 10:33 PM CDT | Severe Thunderstorm Warning | LBF | Grant | 57 min |
| Jul 10, 11:13 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 57 min |
| Jul 10, 11:44 PM CDT | Severe Thunderstorm Warning | LBF | Hooker | 21 min |
| Jul 10, 11:44 PM CDT | Severe Thunderstorm Warning | LBF | Thomas | 46 min |
| Jul 11, 1:10 AM CDT | Tornado Warning | LBF | Brown, Rock | 35 min |
| Jul 11, 2:14 AM CDT | Severe Thunderstorm Warning | LBF | Boyd | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1987Every severe thunderstorm warning in 1987
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.