Alert archive / Minnesota / Mesoscale Discussions in 2015

Mesoscale Discussion 1121

June 22, 201516 counties in Minnesota; 6 counties in Wisconsin

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2015, 2:50 PM CDT for 16 counties in Minnesota; 6 counties in Wisconsin. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued
Jun 22, 2015, 2:50 PM CDT (19:50 UTC)
Expired
Jun 22, 2015, 3:45 PM CDT
In force
55 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 22 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Carver County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Mille Lacs County, MN, Pine County, MN, Ramsey County, MN, Saint Louis County, MN, Sherburne County, MN, Washington County, MN, Wright County, MN, Barron County, WI, Burnett County, WI, Douglas County, WI, Polk County, WI, Saint Croix County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 102 km from the middle of the area, began a volume at 19:52 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

Minneapolis, MN (KMPX), launched 12:00Z, 7.8 hours before the alert went out and 144 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 2015-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 156 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 2015-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.1939587897Sfc1 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
156 J/kg
Mixed-layer CIN
-219 J/kg
Mixed-layer LCL
1177 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 21, 10:41 PM CDTSevere Thunderstorm WatchSPCBecker, Big Stone, Clay, Grant, Norman, Otter Tail and 3 more6 hr
Jun 21, 11:25 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Douglas, Grant, Otter Tail and 5 more95 min
Jun 22, 1:17 AM CDTMesoscale DiscussionSPCBig Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more58 min
Jun 22, 2:25 AM CDTSevere Thunderstorm WatchSPCAnoka, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 36 more6 hr
Jun 22, 3:16 AM CDTMesoscale DiscussionSPCBig Stone, Grant, Lac qui Parle, Lincoln, Pipestone, Rock and 1 more89 min
Jun 22, 4:53 AM CDTMesoscale DiscussionSPCAnoka, Big Stone, Blue Earth, Brown, Carver, Chippewa and 44 more2 hr
Jun 22, 6:03 AM CDTSevere Thunderstorm WatchSPCDodge, Fillmore, Houston, Mower, Olmsted, Wabasha and 1 more4 hr
Jun 22, 7:42 AM CDTMesoscale DiscussionSPCBlue Earth, Carver, Dakota, Dodge, Faribault, Fillmore and 16 more93 min
Jun 22, 8:08 AM CDTSevere Thunderstorm WatchSPCDane, Green, Iowa, Lafayette, Sauk4 hr
Jun 22, 9:14 AM CDTMesoscale DiscussionSPCDodge, Jefferson, Kenosha, Milwaukee, Racine, Rock and 3 more61 min
Jun 22, 9:39 AM CDTSevere Thunderstorm WatchSPCDodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine and 4 more3 hr
Jun 22, 11:00 AM CDTMesoscale DiscussionSPCKenosha, Milwaukee, Racine, Walworth, Waukesha2 hr
Jun 22, 4:48 PM CDTSevere Thunderstorm WatchSPCAshland, Bayfield, Burnett, Douglas, Florence, Forest and 7 more4 hr

Nearby

Mesoscale Discussions in Minnesota, 2015Mesoscale Discussions in Wisconsin, 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.