Alert archive / Wisconsin / Mesoscale Discussions in 2019

Mesoscale Discussion 1313

June 30, 201913 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2019, 10:16 AM CDT for 13 counties in Wisconsin. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Jun 30, 2019, 10:16 AM CDT (15:16 UTC)
Expired: Jun 30, 2019, 12:15 PM CDT
In force: 119 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Marquette County, WI, Richland County, WI, Sauk County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI

The radar

The Milwaukee radar (KMKX), 95 km from the middle of the area, began a volume at 15:16 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 3.3 hours before the alert went out and 126 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: 29 J/kg
Mixed-layer CIN: -408 J/kg
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 131 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 2:12 AM CDT	Mesoscale Discussion	SPC	Burnett, Douglas	2 hr
Jun 30, 4:41 AM CDT	Mesoscale Discussion	SPC	Burnett, Dunn, Pepin, Pierce, Polk, Saint Croix	2 hr
Jun 30, 5:11 AM CDT	Severe Thunderstorm Watch	SPC	Barron, Bayfield, Buffalo, Burnett, Chippewa, Clark and 17 more	7 hr
Jun 30, 7:49 AM CDT	Mesoscale Discussion	SPC	Adams, Buffalo, Chippewa, Clark, Crawford, Dunn and 14 more	116 min
Jun 30, 11:43 AM CDT	Severe Thunderstorm Watch	SPC	Green, Kenosha, Lafayette, Racine, Rock, Walworth	6 hr
Jun 30, 1:38 PM CDT	Mesoscale Discussion	SPC	Green, Kenosha, Lafayette, Rock, Walworth	2 hr
Jun 30, 3:06 PM CDT	Mesoscale Discussion	SPC	Crawford, Grant, Richland, Vernon	84 min
Jun 30, 3:20 PM CDT	Severe Thunderstorm Watch	SPC	Crawford, Grant	4 hr
Jun 30, 5:20 PM CDT	Mesoscale Discussion	SPC	Grant, Green, Iowa, Lafayette	115 min

Nearby

Mesoscale Discussions in Wisconsin, 2019 Every mesoscale discussion 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.