Alert archive / Minnesota / Mesoscale Discussions in 2015

Mesoscale Discussion 958

June 9, 20155 counties in Iowa; 20 counties in Minnesota; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2015, 7:59 PM CDT for 5 counties in Iowa; 20 counties in Minnesota; 9 counties in South Dakota. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Jun 9, 2015, 7:59 PM CDT (00:59 UTC)
Expired
Jun 9, 2015, 9:30 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 34 counties

Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA, Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Hennepin County, MN, Jackson County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Ramsey County, MN, Rock County, MN, Scott County, MN, Sibley County, MN, Washington County, MN, Watonwan County, MN, Bon Homme County, SD, Clay County, SD, Hutchinson County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 123 km from the middle of the area, began a volume at 01:03 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, 1.0 hours before the alert went out and 164 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 2015-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 750 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 2015-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
750 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
2621 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
262 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 10, 3:13 PM CDTMesoscale DiscussionSPCAdams, Appanoose, Clarke, Davis, Decatur, Fremont and 9 more92 min
Jun 10, 3:51 PM CDTMesoscale DiscussionSPCDes Moines114 min
Jun 10, 3:32 PM CDTMesoscale DiscussionSPCFall River88 min

Nearby

Mesoscale Discussions in Minnesota, 2015Mesoscale Discussions in South Dakota, 2015Mesoscale Discussions in Iowa, 2015Every mesoscale discussion in 2015

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.