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Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Sioux Falls, SD

Weather Forecast Office

June 17, 2106 Severe Weather Event

Weather.gov > Sioux Falls, SD > June 17, 2106 Severe Weather Event

Overview

After a hot and humid day across the region, strong thunderstorms moved through during the late afternoon and evening hours. Damaging winds were the most reported weather hazard, with numerous reports of 60+ mph winds. The largest hail report was golf ball size hail near Madison, SD and Parker, SD. Temperatures also fell dramatically as the strong winds and rain moved through.  In Sioux Falls, the temperature went from a steamy 90 degrees, down towards a chilly 67 degrees in less than 30 minutes. 

In many areas there were two rounds of wind from this severe weather event. A strong outflow boundary (cool air rushing away from thunderstorms) would first push through a location bringing 40 to 60 mph winds. This boundary at times, was 30 or miles ahead of thunderstorms.  A second round of wind would then accompany the thunderstorm activity as they moved through.  The combination of these features led to a long and sustained period of 40 to even 70 mph winds. 

Heavy rainfall was also common as thunderstorms moved through. Several flash flood warnings were issued with flooding reported in several areas, including the city of Brookings, SD. Localized rainfall totals greater than 2 to even 4 inches were reported. 

Strong winds and tree damage lead to power outages in many areas. In portions of NW Iowa, including Sioux City, MidAmerican Energy reported that 12,600 customers were without power at one point following the passage of storms.

 Image
Radar Loop of Friday Evening Storms

Photos & Video:

Various Photos of Severe Weather Reports and Information

Satellite Image of Storms Photo Brookings Hail Moody County Tree Damage
Satellite Image of Evening Storms
SSEC/CIMMS		 Tree Damage in Madison
KJAM Radio		 Hail in Brookings, SD
(Jason Sik)		 Moody County Tree Damage
(Carl Brakke)

Satellite Image of Storms Photo LeMars Wind Damage Brookings Flooding
SiouxFalls Temperature and Wind Speed Trace With Time Tree Damage in Madison
Jacky Unzelman-Vasek		 Lemars Wind Damage
(David Skou)		 Brookings Flash Flooding near Childrens Museum
(Kellie Rhody)
 

Radar:

Additonal Radar Image (More Arriving at a Later Time)

LeMars Radar Image Minneota 80 MPH Winds    
LeMars, IA 940 PM Minneota 80 MPH Winds 457pm    

Storm Reports (Live and Interactive Display)

 

Report Time County Location ST Event Type Mag. Source Remark
Fri Jun 17 2016 15:30:00 GMT-0500 (Central Daylight Time) Cherokee 9 S Marcus IA TSTM WND DMG 0 public tree down on a machine shed.
Fri Jun 17 2016 22:00:00 GMT-0500 (Central Daylight Time) Lyon Minneota MN TSTM WND GST 80 trained spotter numerous trees down around town .
Fri Jun 17 2016 22:01:00 GMT-0500 (Central Daylight Time) Lyon Cottonwood MN TSTM WND GST 50 trained spotter .
Fri Jun 17 2016 22:14:00 GMT-0500 (Central Daylight Time) Lyon Marshall MN TSTM WND GST 60 trained spotter .
Fri Jun 17 2016 22:20:00 GMT-0500 (Central Daylight Time) Lyon Marshall MN TSTM WND GST 72 public .
Fri Jun 17 2016 22:31:00 GMT-0500 (Central Daylight Time) Lyon 5 NNW Tracy MN TSTM WND DMG 0 public top of a grain elevator damaged.
Fri Jun 17 2016 22:40:00 GMT-0500 (Central Daylight Time) Lyon Tracy MN TSTM WND DMG 0 trained spotter large tree blown down.
Fri Jun 17 2016 23:08:00 GMT-0500 (Central Daylight Time) Brookings 2 NE Sinai SD HAIL 0.5 public .
Fri Jun 17 2016 23:12:00 GMT-0500 (Central Daylight Time) Cottonwood Mountain Lake MN TSTM WND DMG 0 emergency mngr large tree down across road.
Fri Jun 17 2016 23:28:00 GMT-0500 (Central Daylight Time) Jackson 2 ENE Wilder MN TSTM WND GST 50 nws employee .
Fri Jun 17 2016 23:40:00 GMT-0500 (Central Daylight Time) Turner Parker SD HAIL 1 public .
Fri Jun 17 2016 23:40:00 GMT-0500 (Central Daylight Time) Jackson 3 S Lakefield MN TSTM WND GST 53 mesonet .
Fri Jun 17 2016 23:49:00 GMT-0500 (Central Daylight Time) Brookings Brookings SD HAIL 1.5 trained spotter .
Sat Jun 18 2016 00:00:00 GMT-0500 (Central Daylight Time) Brookings Brookings SD FLASH FLOOD 0 emergency mngr several streets are impassable due to high water.
Sat Jun 18 2016 00:01:00 GMT-0500 (Central Daylight Time) Brookings Brookings SD HAIL 1 public report via social media.
Sat Jun 18 2016 00:05:00 GMT-0500 (Central Daylight Time) Dickinson 1 ENE West Okoboji IA TSTM WND DMG 0 emergency mngr 8 inch diameter tree limb down on lakeshore drive.
Sat Jun 18 2016 00:18:00 GMT-0500 (Central Daylight Time) Lake Madison SD HAIL 1 trained spotter .
Sat Jun 18 2016 00:21:00 GMT-0500 (Central Daylight Time) Lake Madison SD HAIL 1.75 trained spotter .
Sat Jun 18 2016 00:24:00 GMT-0500 (Central Daylight Time) Minnehaha 3 NNW Sioux Falls SD TSTM WND GST 49 official nws obs .
Sat Jun 18 2016 00:28:00 GMT-0500 (Central Daylight Time) Dickinson Spirit Lake IA TSTM WND DMG 0 emergency mngr 8-12 inch tree limb down.
Sat Jun 18 2016 00:35:00 GMT-0500 (Central Daylight Time) Minnehaha Sioux Falls SD TSTM WND DMG 0 law enforcement several trees down around town.
Sat Jun 18 2016 00:35:00 GMT-0500 (Central Daylight Time) Lake Wentworth SD TSTM WND DMG 0 emergency mngr large trees down.
Sat Jun 18 2016 00:40:00 GMT-0500 (Central Daylight Time) Brookings Brookings SD FLASH FLOOD 0 public car stuck near 6th street and main avenue. report and photo posted via social media.
Sat Jun 18 2016 00:40:00 GMT-0500 (Central Daylight Time) Minnehaha Garretson SD TSTM WND GST 50 emergency mngr .
Sat Jun 18 2016 00:44:00 GMT-0500 (Central Daylight Time) Minnehaha Sherman SD HAIL 0.75 emergency mngr .
Sat Jun 18 2016 01:30:00 GMT-0500 (Central Daylight Time) Minnehaha Hartford SD TSTM WND DMG 0 public large tree down. report and photo posted via social media.
Sat Jun 18 2016 01:30:00 GMT-0500 (Central Daylight Time) Mccook Canistota SD TSTM WND DMG 0 trained spotter trees down.
Sat Jun 18 2016 01:40:00 GMT-0500 (Central Daylight Time) Sioux Rock Valley IA TSTM WND DMG 0 emergency mngr tree branches down and there was a power outage.
Sat Jun 18 2016 01:55:00 GMT-0500 (Central Daylight Time) Sioux Hawarden IA TSTM WND DMG 0 emergency mngr numerous trees down across the area.
Sat Jun 18 2016 02:05:00 GMT-0500 (Central Daylight Time) Turner Viborg SD TSTM WND DMG 0 law enforcement 2-3 inches tree branches down in viborg and hurley.
Sat Jun 18 2016 02:20:00 GMT-0500 (Central Daylight Time) Hutchinson Menno SD HAIL 1.25 law enforcement trees down around town.
Sat Jun 18 2016 02:25:00 GMT-0500 (Central Daylight Time) Turner Parker SD HAIL 1.75 law enforcement time estimated by radar.
Sat Jun 18 2016 02:42:00 GMT-0500 (Central Daylight Time) Plymouth Le Mars IA TSTM WND GST 68 law enforcement .
Sat Jun 18 2016 02:45:00 GMT-0500 (Central Daylight Time) Plymouth 5 W Merrill IA TSTM WND DMG 0 public shingles blown off.
Sat Jun 18 2016 03:10:00 GMT-0500 (Central Daylight Time) Dixon Newcastle NE TSTM WND DMG 0 law enforcement trees down in the town.
Sat Jun 18 2016 03:12:00 GMT-0500 (Central Daylight Time) Woodbury Sioux City IA TSTM WND GST 61 asos .
Sat Jun 18 2016 03:13:00 GMT-0500 (Central Daylight Time) Plymouth 2 W Le Mars IA TSTM WND DMG 0 public trees down in the area.
Sat Jun 18 2016 03:28:00 GMT-0500 (Central Daylight Time) Plymouth Kingsley IA HAIL 1 trained spotter .
Sat Jun 18 2016 03:40:00 GMT-0500 (Central Daylight Time) Woodbury Sioux City IA TSTM WND GST 69 asos .
Sat Jun 18 2016 03:44:00 GMT-0500 (Central Daylight Time) Woodbury 5 N Lawton IA TSTM WND DMG 0 public large tree down and damage to a barn.

 

Rain Reports

 

Location State Source Rainfall
Lake Park 3.2 SSE IA CoCoRaHS 1.40
Lester 0.2 E IA CoCoRaHS 1.00
Orange City IA COOP 0.62
Sheldon IA COOP 0.62
Orange City IA AWOS 0.51
Sioux City ANG IA COOP 0.42
Sheldon IA AWOS 0.40
Sioux City IA ASOS 0.39
Sibley IA COOP 0.38
Spencer IA ASOS 0.37
Akron IA COOP 0.30
Holly Springs IA COOP 0.28
Everly 0.3 WSW IA CoCoRaHS 0.14
Cleghorn 2.5 NNE IA CoCoRaHS 0.11
Le Mars IA AWOS 0.05
Marshall 0.6 S MN CoCoRaHS 1.04
Lakefield MN COOP 0.97
Worthington MN COOP 0.78
Ghent 2.8 ENE MN CoCoRaHS 0.77
Marshall MN COOP 0.69
Luverne MN AWOS 0.54
Marshall MN AWOS 0.54
Slayton MN AWOS 0.48
Edgerton 0.5 W MN CoCoRaHS 0.48
Worthington MN AWOS 0.43
Pipestone MN COOP 0.37
Tracy MN AWOS 0.36
Pipestone MN AWOS 0.30
Jackson MN AWOS 0.29
Aurora 7.5 N SD CoCoRaHS 4.23
Brookings 0.5 E SD CoCoRaHS 4.20
White 1.3 ESE SD CoCoRaHS 3.38
White 0.4 WNW SD CoCoRaHS 3.22
Brookings 1.4 SW SD CoCoRaHS 3.10
Brookings 0.8 ESE SD CoCoRaHS 2.96
Madison SD COOP 2.90
Brookings 1.1 S SD CoCoRaHS 2.90
Brookings 0.2 SSW SD CoCoRaHS 2.87
Brookings 8.1 S SD CoCoRaHS 2.63
Astoria 2.2 SSE SD CoCoRaHS 2.16
Wagner 0.8 NW SD CoCoRaHS 1.75
Madison SD AWOS 1.59
Burke 10.5 SSE SD CoCoRaHS 1.53
Vermillion 0.6 SE SD CoCoRaHS 1.34
Chester SD COOP 1.31
Gayville 1.8 SSW SD CoCoRaHS 1.23
Yankton 1.7 NNE SD CoCoRaHS 1.12
Gayville 2.0 WNW SD CoCoRaHS 1.12
Springfield 7.6 WNW SD CoCoRaHS 1.07
Bonesteel 0.1 S SD CoCoRaHS 1.06
Tabor 3.9 S SD CoCoRaHS 1.06
Parker 6.8 WSW SD CoCoRaHS 1.05
Yankton SD COOP 1.02
Burke 6.7 S SD CoCoRaHS 1.00
Herrick 8.2 SSW SD CoCoRaHS 0.93
Sioux Falls 4.5 SSW SD CoCoRaHS 0.89
Tyndall SD COOP 0.88
Hudson 8.3 WNW SD CoCoRaHS 0.85
Harrisburg 2.5 NW SD CoCoRaHS 0.83
Burke 4.2 SW SD CoCoRaHS 0.79
Parkston 8.4 WNW SD CoCoRaHS 0.78
Herrick 4.5 NW SD CoCoRaHS 0.71
Herrick 0.1 NNW SD CoCoRaHS 0.66
Worthing 2.0 W SD CoCoRaHS 0.62
Marion 0.5 NE SD CoCoRaHS 0.59
Dell Rapids 0.9 WNW SD CoCoRaHS 0.59
Elk Point 5.6 NNE SD CoCoRaHS 0.58
Sioux Falls 4.1 SSE SD CoCoRaHS 0.57
Hurley 0.2 S SD CoCoRaHS 0.50
Garretson 4.2 SSE SD CoCoRaHS 0.50
Dimock 10.2 W SD CoCoRaHS 0.47
Dallas 8.8 S SD CoCoRaHS 0.42
Sioux Falls 3.4 WSW SD CoCoRaHS 0.38
Yankton SD AWOS 0.37
Armour 4.6 W SD CoCoRaHS 0.37
Renner 4.1 NW SD CoCoRaHS 0.33
Sioux Falls 3.9 SW SD CoCoRaHS 0.33
Sioux Falls 3.4 ESE SD CoCoRaHS 0.30
Parkston 6.6 S SD CoCoRaHS 0.30
Sioux Falls 1.1 SW SD CoCoRaHS 0.29
Sioux Falls 5.0 SE ARPT SD CoCoRaHS 0.26
Sioux Falls SD ASOS 0.24
Parkston 6.5 WSW SD CoCoRaHS 0.22
Alexandria 6.4 N SD CoCoRaHS 0.15
Pukwana 1.9 S SD CoCoRaHS 0.12
Burke 2.4 NE SD CoCoRaHS 0.10
Mitchell 1.7 SE SD CoCoRaHS 0.06
Academy SD COOP 0.03
Oldham 0.9 E SD CoCoRaHS 0.03
Mitchell SD ASOS 0.01
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