Alert archive / North Dakota / Tornado Warnings in 1987
Tornado Warning 14, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 5, 1987, 7:05 PM CDT for Nelson County, North Dakota. It was in force for 60 min. 2 reports 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
- Aug 5, 1987, 7:05 PM CDT (00:05 UTC)
- Expired
- Aug 5, 1987, 8:05 PM CDT
- In force
- 60 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Nelson County, ND
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 |
|---|---|---|---|
| Aug 5, 7:25 PM CDT | Hail 1.5 | Nelson, ND | |
| Aug 5, 8:00 PM CDT | Hail 1.5 | Nelson, ND |
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
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.1 hours before the alert went out and 228 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
- 282 J/kg
- Mixed-layer CIN
- -257 J/kg
- Mixed-layer LCL
- 2542 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -78 m²/s²
- 0-3 km storm-relative helicity
- -33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 060005 TORFAR NDC063-060105- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE FARGO ND 705 PM CDT WED AUG 5 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 805 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF NORTHEAST NORTH DAKOTA...NELSON AT 700 PM CDT A TORNADO WAS REPORTED NEAR MAPES OR 50 MILES WEST OF GRAND FORKS. IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT SHELTER IF AVAILABLE...OTHERWISE TO A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING. IF CAUGHT OUTDOORS...GET INTO A DITCH...GULLY...RAVINE...OR EVEN A LOW LYING SPOT ON THE GROUND. PROTECT YOUR HEAD. THIS STORM IS ACCOMPANIED BY INTENSE LIGHTNING...LARGE HAIL...AND DANGEROUS STRAIGHT LINE WINDS. VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 7:00 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 60 min |
| Aug 5, 7:14 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 56 min |
| Aug 5, 7:39 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 66 min |
| Aug 5, 7:49 PM CDT | Tornado Warning | FGF | Grand Forks | 56 min |
| Aug 5, 8:05 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson | 55 min |
| Aug 5, 8:32 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 58 min |
| Aug 5, 8:50 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 55 min |
| Aug 5, 8:57 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 63 min |
Nearby
Tornado Warnings in North Dakota, 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.