Alert archive / Minnesota / Mesoscale Discussions in 2018

Mesoscale Discussion 759

June 16, 201818 counties in Minnesota; Richland County, Sargent County, North Dakota; 12 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2018, 9:01 PM CDT for 18 counties in Minnesota; Richland County, Sargent County, North Dakota; 12 counties in South Dakota. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Jun 16, 2018, 9:01 PM CDT (02:01 UTC)
Expired
Jun 16, 2018, 11:00 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
All 32 counties

Big Stone County, MN, Chippewa County, MN, Douglas County, MN, Grant County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Meeker County, MN, Otter Tail County, MN, Pope County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN, Richland County, ND, Sargent County, ND, Beadle County, SD, Brookings County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Kingsbury County, SD, Marshall County, SD, Roberts County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 123 km from the middle of the area, began a volume at 02:06 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 2.0 hours before the alert went out and 124 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, Aberdeen, SD at 00:00Z on 2018-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1622 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, Aberdeen, SD at 00:00Z on 2018-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 321 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
1622 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
976 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
321 m²/s²
0-3 km storm-relative helicity
563 m²/s²
Significant tornado parameter
2.6
Supercell composite
30.6

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, 9:08 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, 5:23 PM CDTMesoscale DiscussionSPCAnoka, Chisago, Hennepin, Isanti, Ramsey, Sherburne and 2 more2 hr
Jun 16, 7:59 PM CDTMesoscale DiscussionSPCBennett, Buffalo, Dewey, Edmunds, Faulk, Haakon and 13 more91 min
Jun 16, 9:50 PM CDTMesoscale DiscussionSPCBennett, Buffalo, Dewey, Edmunds, Faulk, Haakon and 14 more85 min
Jun 17, 5:47 PM CDTMesoscale DiscussionSPCBon Homme, Hanson, Hutchinson, McCook, Turner, Yankton118 min

Nearby

Mesoscale Discussions in Minnesota, 2018Mesoscale Discussions in South Dakota, 2018Mesoscale Discussions in North Dakota, 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.