Alert archive / Minnesota / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 311

June 11, 201716 counties in Minnesota; 14 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2017, 2:37 AM CDT for 16 counties in Minnesota; 14 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jun 11, 2017, 2:37 AM CDT (07:37 UTC)
Expired: Jun 11, 2017, 8:00 AM CDT
In force: 5 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 70 kt

All 30 counties

Big Stone County, MN, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Stevens County, MN, Swift County, MN, Yellow Medicine County, MN, Beadle County, SD, Brookings County, SD, Clark County, SD, Codington County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Miner County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 116 km from the middle of the area, began a volume at 07:36 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: 10%
One or more EF2 to EF5 tornadoes: 2%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 60%
Ten or more severe hail reports: 40%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 11, 3:03 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	27 min
Jun 11, 3:07 AM CDT	Severe Thunderstorm Warning	ABR	Buffalo, Hand, Spink	38 min
Jun 11, 3:25 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	50 min
Jun 11, 3:58 AM CDT	Severe Thunderstorm Warning	ABR	Deuel, Grant	19 min
Jun 11, 4:05 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Davison, Jerauld, Kingsbury, Miner and 1 more	40 min
Jun 11, 4:35 AM CDT	Severe Thunderstorm Warning	FSD	Aurora, Beadle, Davison, Hanson, Jerauld, Kingsbury and 3 more	40 min
Jun 11, 4:37 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Day, Grant	27 min
Jun 11, 4:52 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Hamlin, Spink	38 min
Jun 11, 5:04 AM CDT	Severe Thunderstorm Warning	FSD	Brookings, Hanson, Kingsbury, Lake, McCook, Miner and 1 more	41 min
Jun 11, 5:23 AM CDT	Severe Thunderstorm Warning	ABR	Clark, Codington, Deuel, Grant, Hamlin	52 min
Jun 11, 5:38 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Pipestone	37 min
Jun 11, 5:56 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift, Yellow Medicine	49 min
Jun 11, 6:02 AM CDT	Severe Thunderstorm Warning	ABR	Big Stone, Traverse	43 min
Jun 11, 6:07 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon, Murray, Pipestone	38 min
Jun 11, 6:09 AM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Swift	36 min
Jun 11, 6:24 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Swift	66 min
Jun 11, 6:27 AM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	48 min
Jun 11, 6:40 AM CDT	Severe Thunderstorm Warning	FSD	Lincoln, Lyon, Murray, Pipestone	35 min
Jun 11, 6:50 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Redwood, Renville	55 min
Jun 11, 7:05 AM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Lyon, Murray	40 min
Jun 11, 7:05 AM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	55 min
Jun 11, 7:34 AM CDT	Tornado Warning	MPX	Kandiyohi, Meeker	26 min
Jun 11, 7:40 AM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Murray	50 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 00:00Z, 7.6 hours before the alert went out and 95 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2888 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 76 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 11, 2:02 AM CDT	Mesoscale Discussion	SPC	Big Stone, Brown, Carver, Chippewa, Kandiyohi, Lac qui Parle and 15 more	58 min
Jun 11, 4:00 AM CDT	Mesoscale Discussion	SPC	Lincoln, Lyon, Pipestone	60 min
Jun 11, 5:51 AM CDT	Mesoscale Discussion	SPC	Anoka, Brown, Carver, Chisago, Dakota, Goodhue and 16 more	84 min
Jun 11, 6:28 AM CDT	Severe Thunderstorm Watch	SPC	Anoka, Benton, Blue Earth, Carver, Chisago, Dakota and 26 more	6 hr
Jun 11, 9:30 AM CDT	Mesoscale Discussion	SPC	Anoka, Chisago, Dakota, Dodge, Fillmore, Goodhue and 10 more	60 min
Jun 11, 6:20 PM CDT	Mesoscale Discussion	SPC	Chisago, Dakota, Dodge, Goodhue, Olmsted, Ramsey and 3 more	2 hr
Jun 10, 9:44 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brule, Buffalo, Butte, Custer and 22 more	2 hr
Jun 10, 10:01 PM CDT	Severe Thunderstorm Watch	SPC	Buffalo, Butte, Custer, Dewey, Edmunds, Faulk and 17 more	7 hr
Jun 10, 11:56 PM CDT	Mesoscale Discussion	SPC	Brule, Buffalo, Butte, Custer, Dewey, Edmunds and 17 more	2 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2017 Severe Thunderstorm Watches in South Dakota, 2017 Every severe thunderstorm watch in 2017

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.