Alert archive / Minnesota / Mesoscale Discussions in 2020

Mesoscale Discussion 1149

July 8, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2020, 9:51 PM CDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2020, 9:51 PM CDT (02:51 UTC)
Expired
Jul 8, 2020, 11:45 PM CDT
In force
114 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 344
All 46 counties

Gogebic County, MI, Ontonagon County, MI, Aitkin County, MN, Anoka 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, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Pope County, MN, Renville 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, Yellow Medicine County, MN, Clark County, SD, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Ashland County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Iron County, WI, Polk County, WI, Sawyer County, WI, Vilas County, WI, Washburn County, WI

The radar

The Minneapolis radar (KMPX), 108 km from the middle of the area, began a volume at 02:50 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 00:00Z, 2.9 hours before the alert went out and 108 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 00:00Z on 2020-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2332 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 00:00Z on 2020-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.19395878Sfc1 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
2332 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1764 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
131 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 8, 7:58 PM CDTMesoscale DiscussionSPCAitkin, Benton, Big Stone, Carlton, Cass, Crow Wing and 16 more2 hr
Jul 9, 12:53 AM CDTMesoscale DiscussionSPCAitkin, Carlton, Cass, Crow Wing, Douglas, Grant and 11 more3 hr
Jul 9, 10:24 AM CDTMesoscale DiscussionSPCFillmore, Freeborn, Houston, Mower3 hr
Jul 9, 11:05 AM CDTSevere Thunderstorm WatchSPCFillmore, Freeborn, Houston, Mower8 hr
Jul 8, 9:41 PM CDTSevere Thunderstorm WatchSPCClay, Union7 hr
Jul 9, 4:46 AM CDTMesoscale DiscussionSPCBennett, Fall River, Haakon, Jackson, Jones, Mellette and 1 more2 hr
Jul 9, 1:51 PM CDTMesoscale DiscussionSPCCuster, Fall River, Lawrence, Oglala Lakota114 min
Jul 9, 2:51 PM CDTMesoscale DiscussionSPCColumbia, Crawford, Dane, Dodge, Grant, Green and 16 more114 min
Jul 9, 3:39 PM CDTSevere Thunderstorm WatchSPCColumbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more7 hr
Jul 9, 5:39 PM CDTMesoscale DiscussionSPCColumbia, Dane, Dodge, Green, Iowa, Jefferson and 7 more96 min

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.