Alert archive / Wisconsin / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 328

June 14, 201741 counties in Illinois; 47 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 14, 2017, 12:40 PM CDT for 41 counties in Illinois; 47 counties in Wisconsin. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 14, 2017, 12:40 PM CDT (17:40 UTC)
Expired: Jun 14, 2017, 8:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 88 counties

Boone County, IL, Bureau County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Jo Daviess County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McHenry County, IL, McLean County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Warren County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Adams County, WI, Brown County, WI, Calumet County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Door County, WI, Florence County, WI, Fond du Lac County, WI, Forest County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Juneau County, WI, Kenosha County, WI, Kewaunee County, WI, Lafayette County, WI, Langlade County, WI, Lincoln County, WI, Manitowoc County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Milwaukee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Ozaukee County, WI, Portage County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Shawano County, WI, Sheboygan County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

The radar

The Milwaukee radar (KMKX), 104 km from the middle of the area, began a volume at 17:43 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: 10%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 50%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

58 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 14, 12:47 PM CDT	Severe Thunderstorm Warning	LOT	Boone, McHenry	43 min
Jun 14, 12:59 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Jefferson, Rock	26 min
Jun 14, 1:04 PM CDT	Severe Thunderstorm Warning	ARX	Monroe, Richland, Vernon	41 min
Jun 14, 1:11 PM CDT	Severe Thunderstorm Warning	MKX	Iowa, Sauk	49 min
Jun 14, 1:18 PM CDT	Severe Thunderstorm Warning	ARX	Juneau	42 min
Jun 14, 1:23 PM CDT	Severe Thunderstorm Warning	GRB	Menominee, Shawano	67 min
Jun 14, 1:28 PM CDT	Severe Thunderstorm Warning	LOT	Lake, McHenry	47 min
Jun 14, 1:31 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Kankakee, Livingston	44 min
Jun 14, 1:37 PM CDT	Severe Thunderstorm Warning	MKX	Lafayette	38 min
Jun 14, 1:45 PM CDT	Tornado Warning	GRB	Menominee, Shawano	30 min
Jun 14, 1:55 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Sauk	35 min
Jun 14, 1:57 PM CDT	Severe Thunderstorm Warning	DVN	Henderson, Mercer	48 min
Jun 14, 2:00 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Iowa, Sauk	30 min
Jun 14, 2:01 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Schuyler	44 min
Jun 14, 2:03 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Green, Iowa	57 min
Jun 14, 2:04 PM CDT	Severe Thunderstorm Warning	ARX	Adams	26 min
Jun 14, 2:14 PM CDT	Severe Thunderstorm Warning	GRB	Portage, Waushara, Wood	59 min
Jun 14, 2:20 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	40 min
Jun 14, 2:21 PM CDT	Severe Thunderstorm Warning	MKX	Marquette	39 min
Jun 14, 2:25 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson	29 min
Jun 14, 2:28 PM CDT	Severe Thunderstorm Warning	MKX	Columbia	32 min
Jun 14, 2:29 PM CDT	Severe Thunderstorm Warning	LOT	Cook	32 min
Jun 14, 2:32 PM CDT	Severe Thunderstorm Warning	MKX	Green Lake	28 min
Jun 14, 2:34 PM CDT	Severe Thunderstorm Warning	MKX	Dane	26 min
Jun 14, 2:40 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois	50 min
Jun 14, 2:40 PM CDT	Severe Thunderstorm Warning	LOT	Lake, McHenry	35 min
Jun 14, 2:45 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Henry	60 min
Jun 14, 2:47 PM CDT	Severe Thunderstorm Warning	MKX	Dodge	43 min
Jun 14, 2:50 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois	40 min
Jun 14, 2:50 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac	40 min
Jun 14, 2:52 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie, Waupaca, Waushara, Winnebago	53 min
Jun 14, 3:01 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Jefferson, Rock	44 min
Jun 14, 3:04 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox, Peoria, Stark	56 min
Jun 14, 3:19 PM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	41 min
Jun 14, 3:25 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Calumet, Manitowoc, Oconto, Outagamie, Shawano and 1 more	50 min
Jun 14, 3:34 PM CDT	Severe Thunderstorm Warning	LOT	Cook, Kane, Lake, McHenry	31 min
Jun 14, 3:37 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	38 min
Jun 14, 3:38 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Peoria, Stark, Tazewell, Woodford	42 min
Jun 14, 3:40 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	35 min
Jun 14, 3:45 PM CDT	Tornado Warning	GRB	Brown, Kewaunee, Oconto, Outagamie, Shawano	34 min
Jun 14, 3:56 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	49 min
Jun 14, 4:00 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	30 min
Jun 14, 4:00 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Door, Kewaunee, Manitowoc	60 min
Jun 14, 4:02 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Woodford	43 min
Jun 14, 4:07 PM CDT	Severe Thunderstorm Warning	LOT	LaSalle, Livingston	38 min
Jun 14, 4:09 PM CDT	Severe Thunderstorm Warning	GRB	Marinette, Oconto	57 min
Jun 14, 4:11 PM CDT	Severe Thunderstorm Warning	MKX	Sheboygan	34 min
Jun 14, 4:30 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Piatt	45 min
Jun 14, 4:36 PM CDT	Severe Thunderstorm Warning	LOT	DeKalb, Kane, Kendall, LaSalle	39 min
Jun 14, 4:39 PM CDT	Severe Thunderstorm Warning	LOT	Grundy, Kankakee, Kendall, LaSalle, Livingston, Will	36 min
Jun 14, 4:40 PM CDT	Severe Thunderstorm Warning	DVN	Hancock	29 min
Jun 14, 4:47 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	43 min
Jun 14, 4:57 PM CDT	Severe Thunderstorm Warning	GRB	Door	43 min
Jun 14, 5:03 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage, Kane, Kendall, Will	42 min
Jun 14, 5:13 PM CDT	Severe Thunderstorm Warning	LOT	Iroquois	35 min
Jun 14, 5:18 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Schuyler	57 min
Jun 14, 5:23 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois	38 min
Jun 14, 6:08 PM CDT	Severe Thunderstorm Warning	ARX	Grant	36 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, 5.7 hours before the alert went out and 153 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 303 J/kg
Mixed-layer CIN: -184 J/kg
Mixed-layer LCL: 814 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 12:06 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more	2 hr
Jun 14, 12:40 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clay, Clinton, Effingham and 23 more	3 hr
Jun 14, 12:44 PM CDT	Mesoscale Discussion	SPC	Champaign, Clark, Coles, DeWitt, Douglas, Edgar and 5 more	3 hr
Jun 14, 1:04 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 35 more	9 hr
Jun 14, 3:02 PM CDT	Mesoscale Discussion	SPC	Cook, Lake	118 min
Jun 14, 4:59 PM CDT	Mesoscale Discussion	SPC	Cook, DuPage, Grundy, Iroquois, Kane, Kankakee and 4 more	91 min
Jun 14, 6:11 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 22 more	64 min

Nearby

Severe Thunderstorm Watches in Wisconsin, 2017 Severe Thunderstorm Watches in Illinois, 2017 Every 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.