A Pacific storm system will track through the Northwest U.S. today then across the Northern Plains, Upper Midwest and Great Lakes Thursday into Friday. Areas of moderate to heavy snow and gusty to high winds are expected. In the eastern U.S., a storm system will continue tracking across the region today with widespread showers and thunderstorms. A wintry mix will be possible in the Northeast U.S. Read More >
SATURDAYS TORNADIC THUNDERSTORM AND WIDESPREAD SEVERE WEATHER
On Saturday, May 22nd, an unseasonably warm and humid airmass produced severe weather across Central and Eastern South Dakota. The first storm up quickly formed into a supercell thunderstorm with strong rotation and hail signatures. Within a half hour, the first reports of tornado damage were being received.
The storm progressed east, merging with several other storms. As the storm progressed east into the overnight hours, it evolved from a high precipitation supercell with a rain wrapped tornado into a Squall line producing severe hail and heavy rain.
Surveys are ongoing to determine the intensity and number of tornadoes that formed across the area. They suggest a progression back and forth from weak and small to multiple vortex as the system cycled through the course of the event, with a damage rating upwards of EF3. Images and Storm Reports follow:
Photo courtesy of Chris Karstens and The Discovery Channel
(A) 5 miles West of Bowdle, site of inital touchdown.
(B) Through (D) 2 miles Northwest of Bowdle, destroyed farmstead.
(E) Through (L) 1 mile North of Bowdle, destroyed farmstead.
Anchorage for transmission lines
NWUS53 KABR 230840
LSRABR
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ABERDEEN SD
340 AM CDT SUN MAY 23 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM HAIL 10 S SELBY 45.36N 100.03W
05/22/2010 E0.88 INCH WALWORTH SD LAW ENFORCEMENT
REPORTED BY DEPUTY 631B
0550 PM HAIL 10 S SELBY 45.36N 100.03W
05/22/2010 E1.00 INCH WALWORTH SD LAW ENFORCEMENT
0605 PM HAIL 3 E SELBY 45.50N 99.97W
05/22/2010 E1.00 INCH WALWORTH SD LAW ENFORCEMENT
0613 PM HAIL 2 SSE JAVA 45.48N 99.87W
05/22/2010 E1.00 INCH WALWORTH SD TRAINED SPOTTER
0616 PM TORNADO 8 W BOWDLE 45.45N 99.82W
05/22/2010 WALWORTH SD TRAINED SPOTTER
REPORTED BY NUMEROUS TRAINED SPOTTERS
0621 PM TORNADO 5 W BOWDLE 45.45N 99.76W
05/22/2010 WALWORTH SD TRAINED SPOTTER
TRAINED SPOTTER REPORTS TWO TORNADOS ON THE GROUND IN THE
SAME LOCATION
0630 PM TORNADO 5 NW BOWDLE 45.50N 99.73W
05/22/2010 WALWORTH SD EMERGENCY MNGR
LARGE TORNADO ON GROUND. POWERLINE DAMAGE ON HIGHWAY 47
1.5 MILES SOUTH OF HIGHWAY 12. ROAD IMPASSIBLE.
0635 PM TORNADO 3 W HOSMER 45.58N 99.54W
05/22/2010 EDMUNDS SD TRAINED SPOTTER
TRAINED SPOTTER REPORTS LARGE WEDGE TORNADO ON THE GROUND
0640 PM TORNADO 4 SW HOSMER 45.54N 99.53W
05/22/2010 EDMUNDS SD TRAINED SPOTTER
SPOTTER WAS LOCATED 4 SOUTH AND 4 WEST OF HOSMER
0641 PM TORNADO 3 N BOWDLE 45.50N 99.66W
05/22/2010 EDMUNDS SD EMERGENCY MNGR
LARGE WEDGE TORNADO ON GROUND CROSSING HIGHWAY 47.
0645 PM TORNADO 1 N BOWDLE 45.47N 99.66W
05/22/2010 EDMUNDS SD EMERGENCY MNGR
EDMUNDS COUNTY EMERGENCY MANGER REPORTED MAJOR TORNADO
DAMAGE TO POWER LINES AND FARMS IN THE BOWDLE AREA.
0715 PM HAIL HOSMER 45.58N 99.47W
05/22/2010 E1.00 INCH EDMUNDS SD TRAINED SPOTTER
0804 PM TORNADO 5 NE IPSWICH 45.50N 98.96W
05/22/2010 EDMUNDS SD STORM CHASER
STORM CHASERS REPORT TORNADOS ON THE GROUND 3 TO 5 MILES
NORTHEAST OF IPSWICH
0821 PM HAIL IPSWICH 45.44N 99.03W
05/22/2010 E1.00 INCH EDMUNDS SD NWS EMPLOYEE
FELL FOR 10 MINUTES.
0825 PM HAIL IPSWICH 45.44N 99.03W
05/22/2010 E1.00 INCH EDMUNDS SD PUBLIC
0830 PM TORNADO WETONKA 45.62N 98.77W
05/22/2010 MCPHERSON SD BROADCAST MEDIA
KSFY STORM CHASERS REPORTED LARGE RAIN WRAPPED TORNADO IN
THE WETONKA AREA.
0834 PM FUNNEL CLOUD 3 E FAULKTON 45.03N 99.07W
05/22/2010 FAULK SD TRAINED SPOTTER
SPOTTER IS LOCATED 3 MILES EAST OF FAULKTON AND THE
FUNNELCLOUD IS LOCATED 3 MILES SOUTH WEST OF SPOTTER
LOCATION
0838 PM FUNNEL CLOUD 6 SW CRESBARD 45.11N 99.03W
05/22/2010 FAULK SD TRAINED SPOTTER
SPOTTER IS LOCATED 6 MILES SOUTHWEST OF CRESBARD
0845 PM FUNNEL CLOUD 2 SW BARNARD 45.71N 98.53W
05/22/2010 BROWN SD STORM CHASER
STORM CHASER REPORTS A FUNNEL CLOUD 1 MILE WEST OF 281 ON
HWY 10
0848 PM TSTM WND DMG 8 WNW WESTPORT 45.69N 98.65W
05/22/2010 BROWN SD LAW ENFORCEMENT
AT 377TH AVENUE AND 117TH STREET TWO VERY LARGE TREES
WERE UPROOTED AND HAD FALLEN ACROSS THE ROAD. ONE FARMER
HAD BARN DOORS RIPPED OFF WITH A HORSE TRAILER BEING
MOVED 150 FEET. ANOTHER FARMER HAD MAJOR DAMAGE TO
SEVERAL OUTBUILDINGS TO THE ROOFS AND SIDES.
0935 PM HAIL 1 NE STEPHAN 44.26N 99.44W
05/22/2010 E1.00 INCH HYDE SD TRAINED SPOTTER
NICKEL AND QUARTER SIZE HAIL...40 MPH WINDS AND HEAVY
RAIN
0945 PM HAIL WARNER 45.32N 98.50W
05/22/2010 E1.25 INCH BROWN SD LAW ENFORCEMENT
0953 PM HAIL ABERDEEN 45.47N 98.48W
05/22/2010 M1.00 INCH BROWN SD NWS EMPLOYEE
1003 PM HAIL BATH 45.47N 98.32W
05/22/2010 E1.00 INCH BROWN SD TRAINED SPOTTER
1027 PM HAIL 1 S REDFIELD 44.86N 98.52W
05/22/2010 E1.75 INCH SPINK SD STORM CHASER
1143 PM TSTM WND GST ROSLYN 45.50N 97.49W
05/22/2010 E60.00 MPH DAY SD FIRE DEPT/RESCUE
1150 PM HAIL 4 E VEBLEN 45.86N 97.20W
05/22/2010 E1.50 INCH ROBERTS SD LAW ENFORCEMENT
ALSO MEASURED 42MPH WIND WITH THE HAIL
Follow us on Twitter
Follow us on Facebook
Follow us on YouTube
ABR RSS Feed