Alert archive / Nebraska / Tornado Warnings in 1987
Tornado Warning 14, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at Jul 11, 1987, 1:10 AM CDT for Brown County, Rock County, Nebraska. It was in force for 35 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, 1:10 AM CDT (06:10 UTC)
- Expired
- Jul 11, 1987, 1:45 AM CDT
- In force
- 35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 11, 1:10 AM CDT | Thunderstorm Wind 0 | Rock, 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, 6.2 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
- 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 110610 TOROFK NEC017-149-110645- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORFOLK NE 110 AM CDT SAT JUL 11 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 145 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL NEBRASKA...EASTERN BROWN AND ROCK AT 105 AM CDT A TORNADO WAS REPORTED 20 MILES SOUTH AND 3 WEST OF AINSWORTH MOVING TO THE EAST AT 30 MILES AN HOUR. PEOPLE IN THE PATH OF THIS TORNADO SHOULD GO TO A BASEMENT SHELTER IF POSSIBLE...OTHERWISE GO TO A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING. A SEVERE THUNDERSTORM WAT1CH REMAINS IN EFFECT FOR MOST OF NORTH CENTRAL NEBRASKA UNTIL 5 AM SATURDAY MORNING. VAN ALLEN 0609Z
What forecasters said that day
The local office's own words before this tornado 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, 7:30 PM CDT, 5 hours 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 730 PM CDT FRI JUL 10 1987 THUNDERSTORMS HAD LOST STRENGTH ACROSS PARTS OF SOUTHWEST NEBRASKA THIS EVENING. AT 725 PM CDT A STRONG THUNDERSTORM WAS IN SOUTH CENTRAL FRONTIER COUNTY OF SOUTHWEST NEBRASKA BUT HAD LOST STRENGTH DURING THE PAST HOUR. THE THUNDERSTORM IN FRONTIER COUNTY WAS 10 MILES SOUTHEAST OF CURTIS NEBRASKA OR 15 MILES NORTHEAST OF MCCOOK NEBRASKA MOVING NORTHEAST AT 15 MILES AN HOUR. THE STRONG THUNDERSTORM IN NORTHWEST LINCOLN COUNTY HAD DISSAPATED AND IN ITS PLACE WAS ONLY RAINSHOWERS. PEOPLE IN CENTRAL FRONTIER COUNTY SHOULD REMAIN ALERT TO DANGEROUS LIGHTNING...LOCALLY HEAVY RAIN AND BRIEF GUSTY WIND AS THE STRONG THUNDERSTORM MOVES THROUGH THAT COUNTY DURING THE EVENING HOURS. MEYER
Special weather statement, Jul 10, 8:11 PM CDT, 4 hours 59 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, 1:34 AM CDT | Severe Thunderstorm Warning | LBF | Holt | 56 min |
| Jul 11, 2:14 AM CDT | Severe Thunderstorm Warning | LBF | Boyd | 31 min |
Nearby
Tornado Warnings in Nebraska, 1987Every tornado warning in 1987Tornadoes 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.