National Weather Service United States Department of Commerce

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
1242 PM CDT THU JUN 19 2014

...NWS DAMAGE SURVEY FOR 18 JUNE 2014 TORNADO EVENTS IN HYDE AND BUFFALO COUNTIES...

...TORNADO #1 - DAMAGE PICTURES BELOW...

RATING:                 EF-1
ESTIMATED PEAK WIND:    100  MPH
PATH LENGTH /STATUTE/:  1.0 MILES
PATH WIDTH /MAXIMUM/:   40 YARDS
FATALITIES:             0
INJURIES:               0

START DATE:             JUNE 18 2014
START TIME:             605 PM CDT
START LOCATION:         4.5 MILES EAST OF STEPHAN
START LAT/LON:          44.2509 / -99.3672

END DATE:               JUNE 18 2014
END TIME:               615 PM CDT
END LOCATION:           4.5 MILES EAST OF STEPHAN
END_LAT/LON:            44.2614 / -99.3670

THE NWS SURVEY TEAM CONCLUDED THAT A BRIEF TORNADO TOUCHED DOWN NEAR
THE INTERSECTION OF 341ST AVENUE AND 216TH STREET...OR ABOUT 4.5 MILES
EAST OF STEPHAN IN HYDE COUNTY. THE MAIN HOME AT THE RESIDENCE HAD PART
OF ITS METAL ROOF TAKEN OFF...WHILE A SECONDARY HOME LOST THE ENTIRE
ROOF STRUCTURE. A LARGE WOODEN BARN HAD ITS MAIN DOOR BLOWN IN...
RESULTING IN A LIFTING OF THE ROOF STRUCTURE. THIS ALLOWED THE EXTERIOR
WALLS TO COLLAPSE WITH THE ROOF THEN SETTLING BACK DOWN ON THE DEBRIS.
A METAL MACHINE SHED WAS DESTROYED...ALONG WITH A SEMI-TRACTOR TRAILER
BLOWN OVER ON ITS SIDE. AS THE TORNADO CONTINUED NORTHWARD...A TREE GROVE
ON THE WEST SIDE OF THE PROPERTY SUFFERED DAMAGE WITH NUMEROUS TREES BEING
TOPPED AND/OR LARGE BRANCHES BROKEN OFF. DAMAGE OF THIS MAGNITUDE WAS
CONSISTENT WITH WIND SPEEDS AROUND 100 MPH...OR EF-1 DAMAGE.

...TORNADO #2...

RATING:                 EF-0
ESTIMATED PEAK WIND:    80 MPH
PATH LENGTH /STATUTE/:  2 MILES
PATH WIDTH /MAXIMUM/:   ONE QUARTER MILE
FATALITIES:             0
INJURIES:               0

START DATE:             JUNE 18 2014
START TIME:             607 PM CDT
START LOCATION:         8 MILES NORTH/NORTHEAST OF LEES CORNER
START LAT/LON:          44.18 / -99.28

END DATE:               JUNE 18 2014
END TIME:               615 PM CDT
END LOCATION:           10 MILES NORTH/NORTHEAST OF LEES CORNER
END_LAT/LON:            44.20 / -99.25

A SECOND TORNADO WAS CONFIRMED IN BUFFALO COUNTY BASED ON VIDEO
EVIDENCE FROM THE HAND COUNTY EMERGENCY MANAGER. THE TORNADO DEVELOPED
IN BUFFALO COUNTY...SOUTH OF THE HAND AND HYDE COUNTY BORDER. THE
TORNADO GREW IN SIZE TO APPROXIMATELY ONE QUARTER MILE WIDE AS IT TRACKED
NORTH/NORTHEASTWARD.  THE TORNADO APPEARED TO DISSIPATE NEAR THE BUFFALO
AND HAND COUNTY BORDER...OR NEAR THE INTERSECTION OF 219TH STREET
AND 347TH AVENUE.  THE TORNADO REMAINED PRIMARILY OVER RANCH LAND IN
BUFFALO COUNTY ALTHOUGH ONE RESIDENT DID REPORT TREE DAMAGE TO ONE
SHELTERBELT. SEVERAL SOFTWOOD TREES WERE UPROOTED ALONG WITH LARGE BRANCHES
BROKEN. DAMAGE OF THIS MAGNITUDE WAS CONSISTENT WITH WIND SPEEDS OF 75 TO
80 MPH...OR EF-0 DAMAGE.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES.

EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH

NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN NWS
STORM DATA.

 


 

DAMAGE PICTURES FROM HYDE COUNTY...NEAR STEPHAN: