Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Overview - June 11, 2017

A complex of thunderstorm developed early Sunday morning and moved quickly across eastern South Dakota and western Minnesota. These storms produced large hail and damaging wind gusts as they moved through. The largest hailstone reported was nearly 2.5" in Slayton, MN. Winds greater than 60 mph were reported along with the hail in many cases.

This thunderstorm complex brought much needed rainfall to portions of the region. The highest totals were reported up to 2" near Huron, SD With fairly widespread 0.5-2" totals where thunderstorms tracked.

Regional Radar Loop


Regional Satellite Loop	Regional Rainfall Totals	Preliminary Local Storm Reports

Wind, Hail, & Radar
Storm Reports

Wind & Hail:

Hail and Wind

Large hail was reported across many areas of eastern South Dakota and western Minnesota. The largest hail was reported near Slayton, MN where hail up to 2.5" has fallen earlier this morning.


Hail Near Slayton From Ashley Haken	Hail Near Wolsey, SD from Catie Arbogast	Slayton, MN Hail from Casey Gass	Slayton, MN Hail

Radar Images


3D Radar Sampling of Supercell over Slayton, MN	Radar Cross-Section of Hail and Wind Producing Supercell Over Huron, SD	Algorithm Hail Tracks	Caption

Storm Reports

Here's a preliminary map of storm reports for this event. Additional reports are likely to be added, so please visit the interactive storm report page.

Preliminary Storm Reports for the NWS Sioux Falls Forecast area:

Office	Report Time	County	Location	ST	Event Type	Mag.	Source	Remark
FSD	Sun Jun 11 2017 08:25:00 GMT-0500 (Central Daylight Time)	Jerauld	7 NNW Wessington Spring	SD	TSTM WND DMG	0	trained spotter	shed destroyed and shingles off roof.
FSD	Sun Jun 11 2017 09:05:00 GMT-0500 (Central Daylight Time)	Beadle	Wolsey	SD	HAIL	1.75	public	report via social media.
FSD	Sun Jun 11 2017 09:05:00 GMT-0500 (Central Daylight Time)	Beadle	Huron	SD	HAIL	1	trained spotter
FSD	Sun Jun 11 2017 09:10:00 GMT-0500 (Central Daylight Time)	Jerauld	7 NNW Wessington Spring	SD	TSTM WND DMG	0	trained spotter	shed destroyed and shingles off roof.
FSD	Sun Jun 11 2017 09:15:00 GMT-0500 (Central Daylight Time)	Beadle	2 NNW Huron	SD	TSTM WND GST	58	asos	asos station hon, huron regional airport.
FSD	Sun Jun 11 2017 09:20:00 GMT-0500 (Central Daylight Time)	Beadle	7 NNE Huron	SD	TSTM WND DMG	0	trained spotter	estimated 80 mph winds blew roof off barn and blew over irrigation center pivot.
FSD	Sun Jun 11 2017 09:25:00 GMT-0500 (Central Daylight Time)	Sanborn	5 NE Woonsocket	SD	TSTM WND DMG	0	trained spotter	few old trees down as well as up to 4 inch diameter branches from healthy trees.
FSD	Sun Jun 11 2017 09:25:00 GMT-0500 (Central Daylight Time)	Beadle	6 N Huron	SD	HAIL	0.88	trained spotter	also 50 mph winds.
FSD	Sun Jun 11 2017 09:30:00 GMT-0500 (Central Daylight Time)	Sanborn	7 NE Woonsocket	SD	HAIL	1	trained spotter
FSD	Sun Jun 11 2017 09:50:00 GMT-0500 (Central Daylight Time)	Miner	Fedora	SD	TSTM WND DMG	0	trained spotter	tree blown down and took out power pole as it fell.
FSD	Sun Jun 11 2017 10:07:00 GMT-0500 (Central Daylight Time)	Kingsbury	Lake Preston	SD	TSTM WND DMG	0	law enforcement	4 to 6 inch diameter branches down, estimated 60 mph winds.
FSD	Sun Jun 11 2017 11:02:00 GMT-0500 (Central Daylight Time)	Lincoln	7 W Lake Benton	MN	TSTM WND GST	63	storm chaser
FSD	Sun Jun 11 2017 11:05:00 GMT-0500 (Central Daylight Time)	Moody	1 ESE Colman	SD	HAIL	1	storm chaser	reported via social media.
FSD	Sun Jun 11 2017 11:16:00 GMT-0500 (Central Daylight Time)	Lincoln	1 WNW Lake Benton	MN	TSTM WND GST	62	mesonet	mesonet station mn028, 1 wnw lake benton.
FSD	Sun Jun 11 2017 11:20:00 GMT-0500 (Central Daylight Time)	Moody	Flandreau	SD	HAIL	1	public	reported via social media. time estimated based on radar.
FSD	Sun Jun 11 2017 11:23:00 GMT-0500 (Central Daylight Time)	Moody	Flandreau	SD	HAIL	1	public	reported via social media. time estimated based on radar.
FSD	Sun Jun 11 2017 12:00:00 GMT-0500 (Central Daylight Time)	Lyon	Marshall	MN	TSTM WND GST	51	trained spotter
FSD	Sun Jun 11 2017 12:15:00 GMT-0500 (Central Daylight Time)	Murray	Slayton	MN	HAIL	1.75	public	reported via social media.
FSD	Sun Jun 11 2017 12:20:00 GMT-0500 (Central Daylight Time)	Murray	Slayton	MN	HAIL	2	public	measured 2.25" via photo posted on social media.
FSD	Sun Jun 11 2017 12:44:00 GMT-0500 (Central Daylight Time)	Cottonwood	Westbrook	MN	HAIL	1.25	public	reported via social media.