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

A cluster of severe thunderstorms with winds of 60 to 80 mph moved through south central South Dakota between 8 and 9 AM CDT on May 15, 2017. Wind gusts up 80 mph caused damage to trees and few buildings in Armour, South Dakota. There was also a recorded wind gust of 72 mph north of Armour. Damage was also reported in Parkston, South Dakota where a 63 mph wind gust was recorded with these storms at 830 AM CDT. A storm survey was done by the NWS Sioux Falls this morning.

Semi-truck blown off the road south of Armour, SD


Sign blown flat by 80 mph in Armour, SD	Damage to trees and building in Armour, SD	Damage to a metal shed in Armour, SD

Photos & Video
Radar
Storm Reports

Photos & Video:

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Damage to building in Armour, SD (Photo by: National Weather Service)	Damage to a second building in Armour, SD (Photo by: National Weather Service)	Damage to trees in Armour, SD (Photo by: National Weather Service)

Radar:

Reflectivity images of severe thunderstorms that occurred during the morning of May 15, 2017.

Radar Image from 8:31 AM CDT as damaging winds move through Parkston, SD.

Visible and infrared satellite image of storms over southern South Dakota as 80 mph winds reach Armour, SD.

Radar image at 8:04 AM CDT as damaging winds move through Armour, SD.

Radar image at 8:31 AM CDT as damaging winds up to 65 mph move through Parkston, SD.

GOES-16 visible and infrared satellite image of storms over southern South Dakota as 80 mph winds reach Armour, SD.

Courtesy of Scott Bachmeier, Cooperative Institute for Meteorological Satellite Studies

Storm Reports

Radar Image

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0805 AM     TSTM WND DMG     ARMOUR                  43.32N 98.34W
05/15/2017                   DOUGLAS            SD   EMERGENCY MNGR

            SHINGLES OFF ROOFS, SOME BUILDING DAMAGE.

0805 AM     TSTM WND DMG     2 S ARMOUR              43.29N 98.34W
05/15/2017                   DOUGLAS            SD   EMERGENCY MNGR

            *** 1 INJ ***
            SEMI TRUCK BLOWN OFF THE ROAD.

0830 AM     TSTM WND DMG     PARKSTON                43.39N 97.99W
05/15/2017                   HUTCHINSON         SD   EMERGENCY MNGR

            8 INCH DIAMETER TREE BRANCHES DOWN.

0830 AM     TSTM WND GST     1 SE PARKSTON           43.38N 97.97W
05/15/2017  M63 MPH          HUTCHINSON         SD   MESONET

            SDSU MESONET STATION.