Alert archive / Wisconsin / Tornado Watches in 2024
Tornado Watch 678
The Storm Prediction Center issued this tornado watch at Sep 19, 2024, 5:10 PM CDT for 5 counties in Minnesota; 7 counties in Wisconsin. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 2024, 5:10 PM CDT (22:10 UTC)
- Expired
- Sep 19, 2024, 8:49 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Carlton County, MN, Cook County, MN, Lake County, MN, Pine County, MN, Saint Louis County, MN, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Price County, WI, Sawyer County, WI, Washburn County, WI
The radar
The Duluth radar (KDLH), 96 km from the middle of the area, began a volume at 22:13 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 5:20 PM CDT | Tornado Warning | DLH | Saint Louis | 25 min |
| Sep 19, 5:23 PM CDT | Tornado Warning | DLH | Carlton | 37 min |
| Sep 19, 5:43 PM CDT | Severe Thunderstorm Warning | DLH | Carlton, Pine, Saint Louis | 47 min |
| Sep 19, 5:44 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 46 min |
| Sep 19, 5:56 PM CDT | Tornado Warning | DLH | Carlton, Saint Louis | 18 min |
| Sep 19, 6:05 PM CDT | Tornado Warning | DLH | Saint Louis | 25 min |
| Sep 19, 6:08 PM CDT | Tornado Warning | DLH | Saint Louis | 37 min |
| Sep 19, 6:22 PM CDT | Tornado Warning | DLH | Pine | 23 min |
| Sep 19, 6:26 PM CDT | Severe Thunderstorm Warning | DLH | Lake, Saint Louis | 30 min |
| Sep 19, 6:42 PM CDT | Tornado Warning | DLH | Pine | 33 min |
| Sep 19, 6:51 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Washburn | 39 min |
| Sep 19, 7:14 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 31 min |
| Sep 19, 7:39 PM CDT | Severe Thunderstorm Warning | DLH | Douglas | 24 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 327 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
- 235 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1275 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 273 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 1:26 PM CDT | Mesoscale Discussion | SPC | Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 19 more | 2 hr |
| Sep 19, 2:10 PM CDT | Severe Thunderstorm Watch | SPC | Anoka, Blue Earth, Carver, Chisago, Dakota, Dodge and 21 more | 6 hr |
| Sep 19, 5:08 PM CDT | Mesoscale Discussion | SPC | Carlton, Cook, Kanabec, Lake, Pine, Saint Louis | 67 min |
Nearby
Tornado Watches in Wisconsin, 2024Tornado Watches in Minnesota, 2024Every tornado watch in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.