Alert archive / North Dakota / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 72, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 5, 1987, 7:14 PM CDT for Steele County, Traill County, North Dakota. 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
- Aug 5, 1987, 7:14 PM CDT (00:14 UTC)
- Expired
- Aug 5, 1987, 8:10 PM CDT
- In force
- 56 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Steele County, ND, Traill 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, 7:37 PM CDT | Hail 1.75 | Steele, 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, 0.2 hours before the alert went out and 258 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 060014 SVRFAR NDC091-097-060110- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FARGO ND 714 PM CDT WED AUG 5 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 810 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF EAST CENTRAL NORTH DAKOTA...STEELE AND TRAILL AT 710 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 40 MILES NORTH- WEST OF FARGO NEAR COLGATE MOVING EAST AT 35 MILES AN HOUR. REMEMBER...SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND/OR HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING... AND HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND LIGHTNING. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOO"KOUT. 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, 7:05 PM CDT | Tornado Warning | FGF | Nelson | 60 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
Severe Thunderstorm Warnings in North Dakota, 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.