Alert archive / Minnesota / Tornado Warnings in 1998
Tornado Warning 9, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 24, 1998, 7:28 PM CDT for Polk County, Minnesota. It was in force for 32 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
- Jun 24, 1998, 7:28 PM CDT (00:28 UTC)
- Expired
- Jun 24, 1998, 8:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Polk County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 74 km from the middle of the area, began a volume at 00:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 24, 7:47 PM CDT | Hail 0.75 | Beltrami, MN | |
| Jun 24, 8:07 PM CDT | Hail 1.25 | 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.
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 0.5 hours before the alert went out and 246 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
- 1120 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 817 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 323 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 10.6
The text
As transmitted, in the capitals the NWS used until 2016.
462 WFUS1 KFAR 250029 RRA TORFAR MNC119-250100- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 728 PM CDT WED JUN 24 1998 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN POLK COUNTY IN NORTHWESTERN MINNESOTA * UNTIL 800 PM CDT * AT 725 PM CDT A SPOTTER REPORTED A TORNADO 5 MILES WEST OF DOROTHY OR 25 MILES EAST OF GRAND FORKS. THE STORM WAS MOVING EAST AT 15 MPH. THIS STORM IS EXPECTED TO REMAIN OVER RURAL AREAS OF NORTHWEST POLK COUNTY THROUGH 8OO PM. DO NOT OUTRUN A TORNADO IN YOUR CAR. LEAVE YOUR CAR AND GO TO A STRONG BUILDING OR SEEK SHELTER IN A DITCH OR LOW SPOT. KENNEDY &
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 7:12 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 33 min |
| Jun 24, 7:43 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 32 min |
| Jun 24, 7:50 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 30 min |
| Jun 24, 7:51 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Red Lake | 34 min |
| Jun 24, 8:15 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 35 min |
| Jun 24, 8:34 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 31 min |
| Jun 24, 9:48 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 32 min |
| Jun 24, 10:20 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 30 min |
| Jun 24, 10:48 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 32 min |
| Jun 25, 4:25 AM CDT | Severe Thunderstorm Warning | FGF | Kittson | 35 min |
| Jun 25, 5:01 AM CDT | Severe Thunderstorm Warning | FGF | Kittson | 34 min |
Nearby
Tornado Warnings in Minnesota, 1998Every tornado warning in 1998Tornadoes in 1998
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; radar from the NEXRAD Level II archive.