Alert archive / Minnesota / Tornado Warnings in 1999
Tornado Warning 6, NWS Duluth, MN
NWS Duluth, MN issued this tornado warning at Jul 25, 1999, 3:48 PM CDT for Itasca County, Koochiching County, Minnesota. It was in force for 27 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 25, 1999, 3:48 PM CDT (20:48 UTC)
- Expired
- Jul 25, 1999, 4:15 PM CDT
- In force
- 27 min
- Issued by
- NWS Duluth, MN
- Area
- Whole counties
Counties Itasca County, MN, Koochiching County, MN
The radar
The Duluth radar (KDLH), 162 km from the middle of the area, began a volume at 20:49 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 |
|---|---|---|---|
| Jul 25, 4:25 PM CDT | Thunderstorm Wind 61 | Bigfork, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 25, 11:00 AM CDT | Tornado Watch | SPC | 5 hr |
| Jul 25, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 8.8 hours before the alert went out and 83 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
- 2231 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Duluth, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 3:20 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching | 55 min |
| Jul 25, 4:17 PM CDT | Severe Thunderstorm Warning | DLH | Itasca, Koochiching | 58 min |
| Jul 25, 4:17 PM CDT | Severe Thunderstorm Warning | DLH | Cass | 58 min |
| Jul 25, 4:59 PM CDT | Severe Thunderstorm Warning | DLH | Aitkin, Crow Wing | 61 min |
| Jul 25, 4:59 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Saint Louis | 61 min |
| Jul 25, 5:31 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 59 min |
| Jul 25, 6:01 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine | 59 min |
| Jul 25, 6:01 PM CDT | Severe Thunderstorm Warning | DLH | Saint Louis | 59 min |
| Jul 25, 6:04 PM CDT | Severe Thunderstorm Warning | DLH | Lake | 56 min |
| Jul 25, 6:59 PM CDT | Severe Thunderstorm Warning | DLH | Lake | 31 min |
| Jul 25, 6:46 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Washburn | 59 min |
| Jul 25, 6:58 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield | 62 min |
Nearby
Tornado Warnings in Minnesota, 1999Every tornado warning in 1999Tornadoes in 1999
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.