Alert archive / South Dakota / Mesoscale Discussions in 2011

Mesoscale Discussion 1034

May 30, 20114 states

The Storm Prediction Center issued this mesoscale discussion at May 30, 2011, 6:17 PM CDT for 4 states. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
May 30, 2011, 6:17 PM CDT (23:17 UTC)
Expired
May 30, 2011, 8:15 PM CDT
In force
118 min
Issued by
the Storm Prediction Center
All 98 counties

Becker County, MN, Big Stone County, MN, Chippewa County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Hubbard County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Mahnomen County, MN, Murray County, MN, Norman County, MN, Otter Tail County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN, Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Cedar County, NE, Custer County, NE, Dawson County, NE, Frontier County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Pierce County, NE, Rock County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 103 km from the middle of the area, began a volume at 23:17 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

Aberdeen, SD (KABR), launched 12:00Z, 11.3 hours before the alert went out and 142 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 12:00Z on 2011-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2011-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 758 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
485 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
758 m²/s²
0-3 km storm-relative helicity
711 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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
May 29, 10:58 PM CDTSevere Thunderstorm WatchSPCBrown, Chippewa, Cottonwood, Jackson, Kandiyohi, Lac qui Parle and 16 more6 hr
May 30, 2:52 AM CDTMesoscale DiscussionSPCAnoka, Benton, Big Stone, Blue Earth, Brown, Carver and 30 more113 min
May 30, 4:05 AM CDTSevere Thunderstorm WatchSPCBenton, Big Stone, Chippewa, Chisago, Douglas, Grant and 19 more5 hr
May 30, 6:51 AM CDTMesoscale DiscussionSPCAnoka, Benton, Carlton, Chisago, Hennepin, Isanti and 9 more114 min
May 30, 1:40 PM CDTMesoscale DiscussionSPCBig Stone, Lac qui Parle, Lincoln, Pipestone, Traverse95 min
May 30, 2:08 PM CDTTornado WatchSPCLincoln, Lyon, Pipestone, Rock7 hr
May 30, 3:52 PM CDTTornado WatchSPCBecker, Benton, Big Stone, Cass, Chippewa, Clay and 25 more7 hr
May 29, 7:16 PM CDTTornado WatchSPCCass, Douglas, Fillmore, Gage, Jefferson, Johnson and 11 more4 hr
May 29, 9:24 PM CDTMesoscale DiscussionSPCAntelope, Boone, Burt, Butler, Cass, Cedar and 31 more96 min
May 30, 2:19 PM CDTMesoscale DiscussionSPCArthur, Cheyenne, Deuel, Garden, Keith, Kimball and 1 more56 min
May 30, 4:45 PM CDTSevere Thunderstorm WatchSPCArthur, Chase, Cherry, Deuel, Dundy, Garden and 9 more3 hr
May 30, 5:47 PM CDTMesoscale DiscussionSPCArthur, Brown, Chase, Cherry, Deuel, Dundy and 9 more58 min

Nearby

Mesoscale Discussions in South Dakota, 2011Mesoscale Discussions in Nebraska, 2011Mesoscale Discussions in Minnesota, 2011Every mesoscale discussion in 2011

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.