Alert archive / Wisconsin / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 313
The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2017, 11:39 AM EDT for 5 counties in Michigan; 22 counties in Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2017, 11:39 AM EDT (15:39 UTC)
- Expired
- Jun 11, 2017, 5:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 27 counties
Delta County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Menominee County, MI, Brown County, WI, Calumet County, WI, Door County, WI, Florence County, WI, Forest County, WI, Kewaunee County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Menominee County, WI, Oconto County, WI, Oneida County, WI, Outagamie County, WI, Portage County, WI, Shawano County, WI, Vilas County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI
The radar
The Green Bay radar (KGRB), 117 km from the middle of the area, began a volume at 15:44 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
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 80%
- One or more gusts of 65 knots or more
- 50%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 12:08 PM EDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon, Oneida | 67 min |
| Jun 11, 12:59 PM EDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Lincoln, Marathon, Menominee, Oneida and 2 more | 61 min |
| Jun 11, 1:17 PM EDT | Tornado Warning | GRB | Langlade | 28 min |
| Jun 11, 1:29 PM EDT | Severe Thunderstorm Warning | MQT | Iron | 32 min |
| Jun 11, 1:38 PM EDT | Severe Thunderstorm Warning | GRB | Florence, Forest, Marinette | 52 min |
| Jun 11, 1:48 PM EDT | Severe Thunderstorm Warning | GRB | Langlade, Marinette, Menominee, Oconto, Shawano | 57 min |
| Jun 11, 2:28 PM EDT | Severe Thunderstorm Warning | MQT | Menominee | 33 min |
| Jun 11, 2:38 PM EDT | Severe Thunderstorm Warning | GRB | Door | 52 min |
| Jun 11, 3:12 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Schoolcraft | 51 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 12:00Z, 3.7 hours before the alert went out and 119 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
- 364 J/kg
- Mixed-layer CIN
- -366 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 198 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 |
|---|---|---|---|---|
| Jun 10, 9:12 PM EDT | Mesoscale Discussion | SPC | Baraga, Gogebic, Houghton, Keweenaw, Ontonagon | 2 hr |
| Jun 11, 10:30 AM EDT | Mesoscale Discussion | SPC | Iron | 60 min |
| Jun 11, 1:00 PM EDT | Mesoscale Discussion | SPC | Dickinson, Menominee | 2 hr |
| Jun 11, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Alpena, Antrim, Charlevoix, Cheboygan, Chippewa, Emmet and 7 more | 3 hr |
| Jun 11, 3:46 PM EDT | Mesoscale Discussion | SPC | Alcona, Alpena, Antrim, Charlevoix, Cheboygan, Chippewa and 11 more | 119 min |
| Jun 11, 7:20 PM EDT | Mesoscale Discussion | SPC | Iron | 2 hr |
| Jun 11, 6:51 AM EDT | Mesoscale Discussion | SPC | Barron, Buffalo, Chippewa, Dunn, Eau Claire, Pepin and 4 more | 84 min |
| Jun 11, 7:28 AM EDT | Severe Thunderstorm Watch | SPC | Barron, Buffalo, Burnett, Chippewa, Clark, Dunn and 12 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2017Severe Thunderstorm Watches in Michigan, 2017Every severe thunderstorm watch in 2017
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.