Alert archive / Minnesota / Mesoscale Discussions in 2012

Mesoscale Discussion 1215

June 19, 20124 states

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2012, 2:39 AM CDT for 4 states. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jun 19, 2012, 2:39 AM CDT (07:39 UTC)
Expired
Jun 19, 2012, 3:45 AM CDT
In force
66 min
Issued by
the Storm Prediction Center
All 96 counties

Anoka County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Douglas County, MN, Goodhue County, MN, Grant County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Murray County, MN, Nicollet County, MN, Olmsted County, MN, Pipestone County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Yellow Medicine County, MN, Dickey County, ND, Sargent County, ND, Beadle County, SD, Brookings County, SD, Brown County, SD, Buffalo County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McPherson County, SD, Miner County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Barron County, WI, Buffalo County, WI, Burnett County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, Lincoln County, WI, Marathon County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI, Wood County, WI

The radar

The Minneapolis radar (KMPX), 68 km from the middle of the area, began a volume at 07:42 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 00:00Z, 7.7 hours before the alert went out and 66 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 2012-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -16 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2661 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-16 m²/s²
0-3 km storm-relative helicity
161 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 18, 9:11 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Chippewa, Cottonwood, Jackson, Lac qui Parle and 13 more94 min
Jun 18, 10:08 PM CDTSevere Thunderstorm WatchSPCBig Stone, Blue Earth, Brown, Chippewa, Cottonwood, Douglas and 20 more8 hr
Jun 18, 11:59 PM CDTMesoscale DiscussionSPCBrown, Chippewa, Kandiyohi, Lac qui Parle, Lincoln, Lyon and 7 more91 min
Jun 19, 3:25 AM CDTSevere Thunderstorm WatchSPCAnoka, Carver, Dakota, Goodhue, Hennepin, Le Sueur and 6 more5 hr
Jun 19, 4:16 AM CDTMesoscale DiscussionSPCAnoka, Dakota, Goodhue, Hennepin, Le Sueur, Ramsey and 4 more89 min
Jun 19, 4:56 PM CDTMesoscale DiscussionSPCBecker, Benton, Big Stone, Crow Wing, Douglas, Grant and 11 more94 min
Jun 19, 5:35 PM CDTSevere Thunderstorm WatchSPCAitkin, Becker, Beltrami, Carlton, Cass, Clay and 14 more7 hr
Jun 19, 6:08 PM CDTTornado WatchSPCAnoka, Benton, Big Stone, Chippewa, Chisago, Douglas and 18 more7 hr
Jun 19, 5:11 AM CDTMesoscale DiscussionSPCBrown, Door, Kewaunee, Langlade, Lincoln, Marathon and 8 more34 min
Jun 19, 5:41 AM CDTSevere Thunderstorm WatchSPCBrown, Door, Kewaunee, Langlade, Lincoln, Marathon and 8 more4 hr
Jun 19, 6:22 AM CDTMesoscale DiscussionSPCBrown, Clark, Door, Jackson, Kewaunee, Langlade and 12 more83 min
Jun 19, 7:52 AM CDTMesoscale DiscussionSPCBrown, Door, Kewaunee, Langlade, Marinette, Menominee and 6 more53 min

Nearby

Mesoscale Discussions in Minnesota, 2012Mesoscale Discussions in South Dakota, 2012Mesoscale Discussions in Wisconsin, 2012Every mesoscale discussion in 2012

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.