Alert archive / Wisconsin / Tornado Watches in 2019
Tornado Watch 662
The Storm Prediction Center issued this tornado watch at Sep 24, 2019, 8:17 PM EDT for 5 counties in Michigan; Houston County, Minnesota; 29 counties in Wisconsin. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 24, 2019, 8:17 PM EDT (00:17 UTC)
- Expired
- Sep 25, 2019, 12:35 AM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 65 kt
All 35 counties
Baraga County, MI, Gogebic County, MI, Houghton County, MI, Iron County, MI, Ontonagon County, MI, Houston County, MN, Adams County, WI, Ashland County, WI, Bayfield County, WI, Clark County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Oneida County, WI, Portage County, WI, Price County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Vernon County, WI, Vilas County, WI, Washburn County, WI, Waupaca County, WI, Waushara County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 141 km from the middle of the area, began a volume at 00:15 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
- 50%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 24, 8:35 PM EDT | Severe Thunderstorm Warning | DLH | Ashland, Price, Sawyer | 40 min |
| Sep 24, 8:38 PM EDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 52 min |
| Sep 24, 8:48 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 42 min |
| Sep 24, 9:03 PM EDT | Tornado Warning | DLH | Ashland, Iron, Price | 27 min |
| Sep 24, 9:10 PM EDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 35 min |
| Sep 24, 9:21 PM EDT | Severe Thunderstorm Warning | MQT | Gogebic, Houghton, Ontonagon | 39 min |
| Sep 24, 9:29 PM EDT | Severe Thunderstorm Warning | MQT | Houghton, Keweenaw | 31 min |
| Sep 24, 9:31 PM EDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price, Sawyer | 43 min |
| Sep 24, 9:35 PM EDT | Severe Thunderstorm Warning | GRB | Vilas | 85 min |
| Sep 24, 9:47 PM EDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 30 min |
| Sep 24, 9:52 PM EDT | Severe Thunderstorm Warning | GRB | Oneida | 68 min |
| Sep 24, 9:53 PM EDT | Tornado Warning | MQT | Gogebic, Houghton, Iron, Ontonagon | 22 min |
| Sep 24, 10:06 PM EDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 54 min |
| Sep 24, 10:18 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Gogebic, Houghton, Iron | 42 min |
| Sep 24, 10:21 PM EDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 24 min |
| Sep 24, 10:32 PM EDT | Tornado Warning | MQT | Baraga, Iron | 13 min |
| Sep 24, 10:39 PM EDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon, Wood | 51 min |
| Sep 24, 10:54 PM EDT | Severe Thunderstorm Warning | MQT | Baraga, Dickinson, Iron, Marquette | 51 min |
| Sep 24, 10:56 PM EDT | Flash Flood Warning | DLH | Ashland, Price, Sawyer | 3 hr |
| Sep 24, 11:31 PM EDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Oneida | 44 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
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 193 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
- 195 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1635 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 227 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 24, 10:01 PM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Iron, Ontonagon | 119 min |
| Sep 24, 11:48 PM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Iron, Ontonagon | 117 min |
| Sep 24, 8:45 PM EDT | Mesoscale Discussion | SPC | Olmsted, Wabasha, Winona | 60 min |
Nearby
Tornado Watches in Wisconsin, 2019Tornado Watches in Michigan, 2019Tornado Watches in Minnesota, 2019Every tornado watch in 2019
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.