During the early morning hours of Wednesday, 28 August 2013, a line of severe thunderstorms produced significant wind damage across portions of central and east-central South Dakota. The hardest hit area appeared to be southern Spink County, where significant tree and property damage occurred between about 530am and 7am CDT.
A NWS Storm Survey Team was dispatched to the area on Wednesday afternoon to assess the magnitude and extent of the damage. The worst damage appeared to begin near Cottonwood Lake in western Spink County. Widespread tree damage was sustained with several uprooted trees and many large branches down. Several residences and cabins along the lake suffered moderate to extensive damage. One camping trailer on the west side of the lake rolled approximately 50 yards into the lake and was a total loss. Damage in this area all appeared to be oriented from west/northwest to east/southeast. This is consistent with straight-line wind damage with estimated wind speeds of 70 to 90 mph.
The survey team then continued eastward towards Tulare. Scattered tree damage was noted along the route with several uprooted trees. Several corn and bean fields were either damaged or destroyed by a combination of wind and hail. Again, all the damage appeared to be oriented from northwest to southeast – consistent with straight-line wind damage. Wind damage here was estimated between 70 and 80 mph.
Finally, the team examined damage in and around the community of Tulare. Minor to moderate property damage was noted on several residences including roof damage to the local high school. Widespread tree damage occurred with several large trees uprooted or snapped at their base. All damage near Tulare was also determined to be straight line wind damage – with peak winds speeds estimated to be as high as 90 to 100 mph. In addition, a local mesonet station in Tulare confirmed these speeds with a peak measured wind gust of 91 mph.
This information was collected from the combined effort by the National Weather Service and Spink County Emergency Management. The latest Local Storm Report Summary issued by the NWS Aberdeen forecast office can be found below or by clicking the link HERE.
Additional information will be added to this story as it becomes available.
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE ABERDEEN SD 148 PM CDT WED AUG 28 2013 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0700 PM TSTM WND DMG 12 S MCINTOSH 45.75N 101.35W 08/27/2013 CORSON SD PUBLIC PUBLIC REPORTS WIND DAMAGE TO GRAIN BINS AND TREES. 0715 PM TSTM WND GST BULLHEAD 45.77N 101.08W 08/27/2013 E60 MPH CORSON SD TRAINED SPOTTER SMALL TREES BLOWN OVER. 1100 PM HAIL 2 SE ISABEL 45.37N 101.40W 08/27/2013 E1.00 INCH DEWEY SD PUBLIC RESIDENT REPORTED LOTS OF HAIL... WITH SEVERAL QUARTER SIZED STONES 1101 PM TSTM WND GST 3 SSW WHITLOCKS BAY REC 45.01N 100.29W 08/27/2013 M59 MPH POTTER SD MESONET 1215 AM HAIL 3 S FIRESTEEL 45.38N 101.28W 08/28/2013 E1.00 INCH DEWEY SD TRAINED SPOTTER 1250 AM TSTM WND GST 10 ESE TIMBER LAKE 45.37N 100.88W 08/28/2013 E60 MPH DEWEY SD PUBLIC SMALL HAIL WITH 50-60 MPH WINDS 0400 AM TSTM WND GST 3 SSW WHITLOCKS BAY REC 45.01N 100.29W 08/28/2013 M67 MPH POTTER SD MESONET PEAK WIND GUST MEASURED FROM THE FOREST CITY RWIS. 0402 AM TSTM WND GST 3 SSW WHITLOCKS BAY REC 45.01N 100.29W 08/28/2013 M67 MPH POTTER SD MESONET FOREST CITY BRIDGE RWIS 0415 AM TSTM WND GST 1 S GETTYSBURG 44.99N 99.95W 08/28/2013 M69 MPH POTTER SD MESONET K0D8 GETTYSBURG SUPERAWOS 0520 AM TSTM WND GST 6 SW ORIENT 44.84N 99.17W 08/28/2013 E70 MPH HAND SD PUBLIC LARGE COTTONWOODS SNAPPED IN TWO ESTIMATE 60-70 MPH WINDS 0540 AM TSTM WND GST MIRANDA 44.97N 98.96W 08/28/2013 M80 MPH FAULK SD MESONET PEAK WIND GUST MEASURED FROM THE MIRANDA RWIS. 0605 AM TSTM WND DMG 8 SSE ZELL 44.79N 98.66W 08/28/2013 SPINK SD EMERGENCY MNGR NUMEROUS 2 FT TREES SNAPPED AT BASE... GARAGE DESTROYED AND LAID ACROSS FIELD... AND CAMPERS TIPPED ON EAST SIDE OF COTTONWOOD LAKE 0620 AM TSTM WND GST TULARE 44.74N 98.51W 08/28/2013 M91 MPH SPINK SD PUBLIC HOME WIND SYSTEM 0623 AM TSTM WND DMG TULARE 44.74N 98.51W 08/28/2013 SPINK SD PUBLIC SEVERAL TREES DOWN AND WINDOWS BLOWN OUT OF HOMES IN TULARE. 0625 AM TSTM WND DMG TULARE 44.74N 98.51W 08/28/2013 SPINK SD NWS EMPLOYEE ROOF DAMAGE TO LOCAL SCHOOL 0645 AM TSTM WND DMG 7 ENE TULARE 44.78N 98.38W 08/28/2013 SPINK SD PUBLIC TREES AND TREE BRANCHES DOWN ESTIMATED WIND 60-70 MPH POWER IN AND OUT 0735 AM TSTM WND GST 2 S WILLOW LAKE 44.60N 97.64W 08/28/2013 E70 MPH CLARK SD PUBLIC GRAIN BINS ROLLED CORN FLATTENED PEA TO DIME SIZE HAIL &&