Alert archive / South Dakota / Tornado Watches in 2013

Tornado Watch 336

June 21, 20136 counties in Iowa; 31 counties in Minnesota; 33 counties in South Dakota

The Storm Prediction Center issued this tornado watch at Jun 21, 2013, 1:58 PM CDT for 6 counties in Iowa; 31 counties in Minnesota; 33 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 21, 2013, 1:58 PM CDT (18:58 UTC)
Expired: Jun 21, 2013, 9:07 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 70 kt

All 70 counties

Clay County, IA, Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Sioux County, IA, Benton County, MN, Big Stone County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Cottonwood County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule 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, 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, Union County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 139 km from the middle of the area, began a volume at 18:58 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 30%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 80%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

48 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 21, 2:01 PM CDT	Flash Flood Warning	ABR	Spink	6 hr
Jun 21, 2:03 PM CDT	Tornado Warning	ABR	Spink	27 min
Jun 21, 2:07 PM CDT	Tornado Warning	FSD	Beadle	38 min
Jun 21, 2:09 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington	51 min
Jun 21, 2:11 PM CDT	Tornado Warning	ABR	Hand, Spink	19 min
Jun 21, 2:12 PM CDT	Tornado Warning	ABR	Spink	33 min
Jun 21, 2:17 PM CDT	Severe Thunderstorm Warning	FSD	Beadle	28 min
Jun 21, 2:18 PM CDT	Flash Flood Warning	ABR	Faulk, Hand, Hyde, Spink	6 hr
Jun 21, 2:30 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld, Kingsbury, Miner, Sanborn	45 min
Jun 21, 2:38 PM CDT	Tornado Warning	ABR	Clark, Spink	37 min
Jun 21, 2:44 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Spink	61 min
Jun 21, 2:48 PM CDT	Severe Thunderstorm Warning	FSD	Aurora, Davison, Hanson, Jerauld, McCook, Miner and 1 more	27 min
Jun 21, 2:53 PM CDT	Tornado Warning	FSD	Beadle, Kingsbury	37 min
Jun 21, 2:58 PM CDT	Tornado Warning Tornado observed	ABR	Clark, Spink	32 min
Jun 21, 3:03 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Brookings, Kingsbury, Lake, Miner, Moody and 1 more	42 min
Jun 21, 3:21 PM CDT	Tornado Warning Tornado observed	ABR	Clark, Hamlin	24 min
Jun 21, 3:26 PM CDT	Tornado Warning Tornado observed	ABR	Clark	34 min
Jun 21, 3:33 PM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Hamlin	42 min
Jun 21, 3:40 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	50 min
Jun 21, 3:41 PM CDT	Tornado Warning	ABR	Codington, Deuel, Hamlin	34 min
Jun 21, 3:43 PM CDT	Tornado Warning	ABR	Clark, Codington, Deuel, Hamlin	32 min
Jun 21, 3:46 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	59 min
Jun 21, 3:56 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin	64 min
Jun 21, 4:23 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	37 min
Jun 21, 4:32 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	13 min
Jun 21, 4:33 PM CDT	Flash Flood Warning	ABR	Codington	6 hr
Jun 21, 4:36 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon, Murray, Pipestone	54 min
Jun 21, 4:40 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Grant	50 min
Jun 21, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	62 min
Jun 21, 4:49 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone	41 min
Jun 21, 4:50 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	55 min
Jun 21, 4:59 PM CDT	Tornado Warning	FSD	Lyon	31 min
Jun 21, 5:01 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	59 min
Jun 21, 5:09 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens	66 min
Jun 21, 5:12 PM CDT	Severe Thunderstorm Warning	ABR	Big Stone, Traverse	48 min
Jun 21, 5:21 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	24 min
Jun 21, 5:33 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	57 min
Jun 21, 5:38 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Stearns	52 min
Jun 21, 5:39 PM CDT	Flash Flood Warning	MPX	Pope, Stevens	6 hr
Jun 21, 5:57 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	63 min
Jun 21, 6:26 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Stearns	49 min
Jun 21, 6:52 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Wright	38 min
Jun 21, 8:04 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet	41 min
Jun 21, 8:11 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Lake, Moody	49 min
Jun 21, 8:38 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet	52 min
Jun 21, 8:51 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	39 min
Jun 21, 8:58 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Sibley	47 min
Jun 21, 9:05 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Wright	40 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.0 hours before the alert went out and 158 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 267 J/kg
Mixed-layer CIN: -511 J/kg
Mixed-layer LCL: 1123 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -71 m²/s²
0-3 km storm-relative helicity: -66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 21, 5:23 AM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Cerro Gordo, Chickasaw, Clayton, Fayette and 6 more	37 min
Jun 21, 5:40 AM CDT	Severe Thunderstorm Watch	SPC	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	4 hr
Jun 21, 8:07 AM CDT	Mesoscale Discussion	SPC	Allamakee, Bremer, Buchanan, Chickasaw, Clayton, Clinton and 7 more	53 min
Jun 21, 8:38 AM CDT	Severe Thunderstorm Watch	SPC	Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more	4 hr
Jun 21, 10:12 AM CDT	Mesoscale Discussion	SPC	Cedar, Clinton, Iowa, Johnson, Keokuk, Louisa and 3 more	2 hr
Jun 20, 8:11 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carver, Cass, Chippewa and 32 more	94 min
Jun 20, 8:53 PM CDT	Severe Thunderstorm Watch	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Cass and 32 more	9 hr
Jun 20, 9:37 PM CDT	Mesoscale Discussion	SPC	Big Stone, Clay, Traverse, Wilkin	23 min
Jun 20, 11:46 PM CDT	Mesoscale Discussion	SPC	Aitkin, Anoka, Benton, Carlton, Carver, Cass and 34 more	119 min
Jun 21, 3:14 AM CDT	Mesoscale Discussion	SPC	Anoka, Benton, Carver, Chisago, Dakota, Goodhue and 18 more	91 min
Jun 21, 1:34 PM CDT	Mesoscale Discussion	SPC	Blue Earth, Brown, Chippewa, Cottonwood, Jackson, Lac qui Parle and 10 more	56 min
Jun 21, 3:49 PM CDT	Mesoscale Discussion	SPC	Lac qui Parle, Lincoln, Lyon, Murray, Pipestone, Yellow Medicine	86 min
Jun 21, 4:57 PM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 28 more	63 min
Jun 21, 5:16 PM CDT	Severe Thunderstorm Watch	SPC	Anoka, Blue Earth, Brown, Carver, Chippewa, Chisago and 30 more	7 hr
Jun 21, 6:50 PM CDT	Mesoscale Discussion	SPC	Anoka, Blue Earth, Chisago, Dakota, Dodge, Goodhue and 16 more	85 min
Jun 21, 7:49 AM CDT	Mesoscale Discussion	SPC	Butte, Custer, Harding, Lawrence, Meade, Pennington and 2 more	56 min
Jun 21, 9:09 AM CDT	Severe Thunderstorm Watch	SPC	Aurora, Beadle, Bennett, Brown, Brule, Buffalo and 36 more	7 hr
Jun 21, 12:01 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Bennett, Brule, Buffalo, Butte and 29 more	89 min
Jun 21, 2:48 PM CDT	Severe Thunderstorm Watch	SPC	Butte, Custer, Fall River, Harding, Lawrence, Meade and 2 more	8 hr
Jun 21, 5:59 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brule, Buffalo, Faulk, Gregory and 9 more	91 min
Jun 21, 6:31 PM CDT	Severe Thunderstorm Watch	SPC	Bennett, Haakon, Jackson, Mellette, Todd, Tripp	6 hr

Nearby

Tornado Watches in South Dakota, 2013 Tornado Watches in Minnesota, 2013 Tornado Watches in Iowa, 2013 Every tornado watch 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.