Alert archive / Minnesota / Mesoscale Discussions in 2020

Mesoscale Discussion 1145

July 8, 202034 counties in Minnesota; 4 counties in South Dakota; 6 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2020, 6:17 PM CDT for 34 counties in Minnesota; 4 counties in South Dakota; 6 counties in Wisconsin. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2020, 6:17 PM CDT (23:17 UTC)
Expired
Jul 8, 2020, 8:15 PM CDT
In force
118 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 344
All 44 counties

Aitkin County, MN, Anoka County, MN, Becker County, MN, Benton County, MN, Big Stone County, MN, Carlton County, MN, Cass County, MN, Chippewa County, MN, Chisago County, MN, Crow Wing County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lake County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Otter Tail County, MN, Pine County, MN, Pope County, MN, Saint Louis County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wright County, MN, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Polk County, WI, Washburn County, WI

The radar

The Minneapolis radar (KMPX), 144 km from the middle of the area, began a volume at 23:20 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, 11.3 hours before the alert went out and 143 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 2020-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1297 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 2020-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.1939Sfc1 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
1297 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jul 7, 11:44 PM CDTSevere Thunderstorm WatchSPCBecker, Beltrami, Clay, Clearwater, Hubbard, Kittson and 9 more6 hr
Jul 8, 1:37 AM CDTMesoscale DiscussionSPCBecker, Clay, Kittson, Mahnomen, Marshall, Norman and 5 more113 min
Jul 8, 4:10 AM CDTMesoscale DiscussionSPCBecker, Big Stone, Chippewa, Douglas, Grant, Kandiyohi and 10 more2 hr
Jul 8, 3:03 PM CDTMesoscale DiscussionSPCAitkin, Becker, Beltrami, Benton, Big Stone, Carlton and 25 more117 min
Jul 8, 4:15 PM CDTSevere Thunderstorm WatchSPCAitkin, Anoka, Becker, Benton, Big Stone, Carlton and 30 more8 hr
Jul 7, 7:13 PM CDTSevere Thunderstorm WatchSPCBennett, Butte, Haakon, Harding, Jackson, Lawrence and 5 more5 hr
Jul 7, 8:02 PM CDTMesoscale DiscussionSPCDewey, Haakon, Jackson, Jones, Meade, Pennington and 3 more118 min
Jul 7, 8:17 PM CDTSevere Thunderstorm WatchSPCCampbell, Corson, Dewey, Potter, Stanley, Sully and 1 more5 hr
Jul 8, 3:39 PM CDTMesoscale DiscussionSPCAurora, Bon Homme, Charles Mix, Clay, Davison, Douglas and 10 more3 hr
Jul 8, 5:10 PM CDTSevere Thunderstorm WatchSPCAurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 14 more7 hr

Nearby

Mesoscale Discussions in Minnesota, 2020Mesoscale Discussions in Wisconsin, 2020Mesoscale Discussions in South Dakota, 2020Every mesoscale discussion in 2020

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.