Alert archive / Wisconsin / Mesoscale Discussions in 2018

Mesoscale Discussion 772

June 17, 20188 counties in Minnesota; 16 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2018, 5:23 PM CDT for 8 counties in Minnesota; 16 counties in Wisconsin. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 17, 2018, 5:23 PM CDT (22:23 UTC)
Expired
Jun 17, 2018, 7:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 24 counties

Anoka County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Ramsey County, MN, Sherburne County, MN, Washington County, MN, Wright County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Iron County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Taylor County, WI, Washburn County, WI

The radar

The Minneapolis radar (KMPX), 136 km from the middle of the area, began a volume at 22:24 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.4 hours before the alert went out and 138 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2018-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1067 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2018-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1067 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1089 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.4

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.

IssuedProductOfficeCountiesLasted
Jun 16, 9:01 PM CDTMesoscale DiscussionSPCBig Stone, Chippewa, Douglas, Grant, Kandiyohi, Lac qui Parle and 12 more119 min
Jun 16, 9:08 PM CDTMesoscale DiscussionSPCAitkin, Becker, Benton, Carlton, Cass, Crow Wing and 7 more67 min
Jun 16, 9:47 PM CDTSevere Thunderstorm WatchSPCAitkin, Becker, Benton, Carlton, Cass, Chisago and 22 more7 hr
Jun 16, 10:17 PM CDTMesoscale DiscussionSPCBig Stone, Traverse88 min
Jun 16, 11:44 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Becker, Benton, Carlton, Cass and 28 more2 hr
Jun 17, 2:38 AM CDTMesoscale DiscussionSPCAitkin, Carlton, Chisago, Isanti, Kanabec, Mille Lacs and 1 more97 min
Jun 17, 12:12 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Carlton, Carver, Chippewa and 20 more93 min
Jun 17, 12:34 PM CDTTornado WatchSPCAitkin, Anoka, Benton, Carlton, Chisago, Crow Wing and 10 more8 hr
Jun 17, 3:08 PM CDTMesoscale DiscussionSPCAnoka, Chisago, Hennepin, Isanti, Pine, Ramsey and 1 more97 min
Jun 17, 3:52 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Cottonwood, Jackson, Lyon, Martin and 8 more53 min
Jun 17, 3:46 PM CDTSevere Thunderstorm WatchSPCClark, Florence, Forest, Langlade, Lincoln, Marathon and 10 more8 hr
Jun 17, 6:29 PM CDTMesoscale DiscussionSPCFlorence, Forest, Langlade, Lincoln, Marathon, Marinette and 8 more2 hr

Nearby

Mesoscale Discussions in Wisconsin, 2018Mesoscale Discussions in Minnesota, 2018Every mesoscale discussion in 2018

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.