Alert archive / South Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1042

June 17, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2014, 5:12 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 17, 2014, 5:12 PM CDT (22:12 UTC)
Expired
Jun 17, 2014, 7:15 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 25 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Rock County, MN, Boyd County, NE, Cedar County, NE, Knox County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Hanson 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), 71 km from the middle of the area, began a volume at 22:18 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, 10.2 hours before the alert went out and 334 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 2014-06-17Temperature 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 12:00Z on 2014-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1269 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
30 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 16, 9:01 PM CDTSevere Thunderstorm WatchSPCBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more8 hr
Jun 16, 9:11 PM CDTMesoscale DiscussionSPCAudubon, Boone, Calhoun, Carroll, Cherokee, Crawford and 15 more64 min
Jun 16, 9:56 PM CDTSevere Thunderstorm WatchSPCAdair, Appanoose, Audubon, Boone, Buena Vista, Calhoun and 34 more5 hr
Jun 16, 11:11 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Buena Vista, Calhoun, Carroll and 23 more64 min
Jun 16, 11:40 PM CDTMesoscale DiscussionSPCCedar, Clinton, Iowa, Jackson, Johnson, Jones and 5 more65 min
Jun 17, 1:29 AM CDTMesoscale DiscussionSPCAppanoose, Cedar, Clarke, Davis, Decatur, Des Moines and 23 more91 min
Jun 17, 3:41 AM CDTMesoscale DiscussionSPCClinton, Jackson, Scott64 min
Jun 17, 6:48 PM CDTTornado WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more6 hr
Jun 17, 3:22 PM CDTMesoscale DiscussionSPCBanner, Box Butte, Dawes, Garden, Kimball, Morrill and 3 more113 min
Jun 17, 4:53 PM CDTTornado WatchSPCBlaine, Brown, Cherry, Grant, Hooker, Keya Paha and 3 more6 hr
Jun 16, 7:47 PM CDTMesoscale DiscussionSPCBon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more58 min
Jun 16, 7:49 PM CDTMesoscale DiscussionSPCPerkins86 min
Jun 16, 8:37 PM CDTMesoscale DiscussionSPCBon Homme, Charles Mix, Davison, Douglas, Gregory, Hanson and 8 more83 min
Jun 17, 12:40 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Pennington2 hr
Jun 17, 1:31 PM CDTTornado WatchSPCBennett, Butte, Custer, Harding, Jackson, Lawrence and 3 more7 hr
Jun 17, 6:02 PM CDTMesoscale DiscussionSPCBennett, Butte, Harding, Jackson, Meade, Oglala Lakota and 1 more88 min

Nearby

Mesoscale Discussions in South Dakota, 2014Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Nebraska, 2014Every mesoscale discussion in 2014

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.