Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 7, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 29, 1989, 4:00 PM CDT for Beltrami County, Lake of the Woods County, Minnesota. It was in force for 60 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
- Jun 29, 1989, 4:00 PM CDT (21:00 UTC)
- Expired
- Jun 29, 1989, 5:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
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 |
|---|---|---|---|
| Jun 29, 4:45 PM CDT | Hail 1 | Beltrami, MN |
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
International Fa, MN (KINL), launched 12:00Z, 9.0 hours before the alert went out and 122 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 195 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jun 29, 3:06 PM CDT, 54 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE FARGO ND 305 PM CDT THU JUN 29 1989 AT 300 PM CDT AN INTENSE THUNDERSTORM HAD DEVELOPED 20 MILES NORTHEAST OF THIEF RIVER FALLS IN NORTHWEST MINNESOTA...NEAR THE AGASSIZ WILDLIFE REFUGE. HAIL...DEADLY LIGHTNING AND DAMIGING WINDS ARE LIKELY AS THIS STORM MOVES NORTHEAST AT 25 MILES AN HOUR. THIS STORM WILL CROSS THE THIEF LAKE REFUGE BETWEEN 315 AND 345 PM CDT. BOATERS AND CAMPERS AREA ADVISED TO SEEK SHELTER IF YOU ARE IN THE PATH OF THIS STORM. CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS ACROSS NORTHWEST MINNESOTA THIS AFTERNOON AND EVENING. STAY TUNED TO RADIO...T.V. AS WELL AS NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE WARNINGS. EWENS
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 3:18 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 42 min |
| Jun 29, 5:00 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 60 min |
| Jun 29, 6:00 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods | 60 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989
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.