Alert archive / South Dakota / Mesoscale Discussions in 2013

Mesoscale Discussion 1145

June 20, 20134 counties in Minnesota; 9 counties in North Dakota; 25 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2013, 9:37 PM CDT for 4 counties in Minnesota; 9 counties in North Dakota; 25 counties in South Dakota. It was in force for 23 min.

The area

The outline as issued.

The facts

Issued
Jun 20, 2013, 9:37 PM CDT (02:37 UTC)
Expired
Jun 20, 2013, 10:00 PM CDT
In force
23 min
Issued by
the Storm Prediction Center
All 38 counties

Big Stone County, MN, Clay County, MN, Traverse County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Beadle County, SD, Brookings County, SD, Brown County, SD, Buffalo County, SD, Campbell 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, Hughes County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 48 km from the middle of the area, began a volume at 02:38 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

Aberdeen, SD (KABR), launched 00:00Z, 2.6 hours before the alert went out and 88 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, Aberdeen, SD at 00:00Z on 2013-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1271 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, Aberdeen, SD at 00:00Z on 2013-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
1271 J/kg
Mixed-layer CIN
-171 J/kg
Mixed-layer LCL
1606 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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 20, 8:11 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Carver, Cass, Chippewa and 32 more94 min
Jun 20, 8:53 PM CDTSevere Thunderstorm WatchSPCAitkin, Anoka, Benton, Carlton, Carver, Cass and 32 more9 hr
Jun 20, 11:46 PM CDTMesoscale DiscussionSPCAitkin, Anoka, Benton, Carlton, Carver, Cass and 34 more119 min
Jun 21, 3:14 AM CDTMesoscale DiscussionSPCAnoka, Benton, Carver, Chisago, Dakota, Goodhue and 18 more91 min
Jun 21, 5:23 AM CDTMesoscale DiscussionSPCDodge, Faribault, Fillmore, Freeborn, Houston, Mower and 4 more37 min
Jun 21, 5:40 AM CDTSevere Thunderstorm WatchSPCFillmore, Houston, Winona4 hr
Jun 21, 1:34 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Chippewa, Cottonwood, Jackson, Lac qui Parle and 10 more56 min
Jun 21, 1:58 PM CDTTornado WatchSPCBenton, Big Stone, Brown, Carver, Chippewa, Cottonwood and 25 more7 hr
Jun 21, 3:49 PM CDTMesoscale DiscussionSPCLac qui Parle, Lincoln, Lyon, Murray, Pipestone, Yellow Medicine86 min
Jun 21, 4:57 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Chisago, Dakota and 28 more63 min
Jun 21, 5:16 PM CDTSevere Thunderstorm WatchSPCAnoka, Blue Earth, Brown, Carver, Chippewa, Chisago and 30 more7 hr
Jun 21, 6:50 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Chisago, Dakota, Dodge, Goodhue and 16 more85 min
Jun 21, 7:49 AM CDTMesoscale DiscussionSPCAdams, Bowman, Grant, Hettinger56 min
Jun 21, 9:09 AM CDTSevere Thunderstorm WatchSPCAurora, Beadle, Bennett, Brown, Brule, Buffalo and 36 more7 hr
Jun 21, 12:01 PM CDTMesoscale DiscussionSPCAurora, Beadle, Bennett, Brule, Buffalo, Butte and 29 more89 min
Jun 21, 2:48 PM CDTSevere Thunderstorm WatchSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 2 more8 hr
Jun 21, 5:59 PM CDTMesoscale DiscussionSPCAurora, Beadle, Brule, Buffalo, Faulk, Gregory and 9 more91 min
Jun 21, 6:31 PM CDTSevere Thunderstorm WatchSPCBennett, Haakon, Jackson, Mellette, Todd, Tripp6 hr

Nearby

Mesoscale Discussions in South Dakota, 2013Mesoscale Discussions in North Dakota, 2013Mesoscale Discussions in Minnesota, 2013Every mesoscale discussion in 2013

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.