920
NOUS43 KBIS 291925
PNSBIS
NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-300730-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BISMARCK ND
225 PM CDT SUN JUN 29 2025 /125 PM MDT SUN JUN 29 2025/
..NWS DAMAGE SURVEY FOR 06/27/2025 TORNADO EVENT
VIDEO EVIDENCE GATHERED FROM SOCIAL MEDIA VERIFIES THAT A SUPERCELL
THUNDERSTORM PRODUCED TWO TORNADOES JUST NORTH OF BISMARCK, NORTH
DAKOTA, ON THE EVENING OF FRIDAY, JUNE 27TH 2025. THE FIRST
TORNADO RESULTED IN DAMAGE AT A RESIDENCE ALONG 110TH AVE NW. THE
TORNADO TRACKED SOUTH, ACROSS THE ROADWAY AND DISSIPATED IN AN
OPEN FIELD. THE TORNADO LASTED APPROXIMATELY 4 MINUTES. A SECOND
TORNADO THEN DEVELOPED SOUTH OF 110TH AVE NW AND DRIFTED SLOWLY
SOUTHWEST BEFORE DISSIPATING IN THE SAME OPEN FIELD. THE SECOND
TORNADO LASTED APPROXIMATELY 5 MINUTES.
BISMARCK TORNADO 1
RATING: EF1
ESTIMATED PEAK WIND: 95 MPH
PATH LENGTH /STATUTE/: 0.33 MILES
PATH WIDTH /MAXIMUM/: UNKNOWN
FATALITIES: 0
INJURIES: 0
START DATE: 06/27/2025
START TIME: 10:23 PM CDT
START LOCATION: 8 N BISMARCK / BURLEIGH COUNTY / ND
START LAT/LON: 46.928 / -100.7913
END DATE: 06/27/2025
END TIME: 10:26 PM CDT
END LOCATION: 8 N BISMARCK / BURLEIGH COUNTY / ND
END LAT/LON: 46.9238 / -100.7882
SURVEY SUMMARY:
VIDEO AND NUMEROUS PHOTOS FROM SOCIAL MEDIA INDICATED A TORNADO
FORMED APPROXIMATELY 8 MILES NORTH OF BISMARCK. A STORM SURVEY
FOUND THAT THE TORNADO DEVELOPED JUST NORTH OF A RESIDENCE ON
110TH AVE NW, AN EAST TO WEST ROADWAY. THE TORNADO MOVED FROM NORTH
TO SOUTH ACROSS THE RESIDENCE LOT, CAUSING SIGNIFICANT ROOF DAMAGE
TO AN OUTBUILDING, TOPPLING A COVERED TRAILER AND SNAPPING OR
UPROOTING A FEW TREES. THE TORNADO CROSSED 110TH AVE NW AND
SNAPPED SEVERAL BRANCHES OF A LARGE COTTONWOOD TREE IN THE DITCH
ON THE SOUTH SIDE OF THE ROADWAY. THE TORNADO THEN TRAVELED A FEW
HUNDRED FEET INTO AN OPEN FIELD BEFORE DISSIPATING. THE DAMAGE
FOUND WAS CONSISTENT WITH EF1 TORNADO DAMAGE WITH ESTIMATED PEAK
WINDS OF 95 MPH.
BISMARCK TORNADO 2
RATING: EFU
ESTIMATED PEAK WIND: UNKNOWN
PATH LENGTH /STATUTE/: 0.46 MILES
PATH WIDTH /MAXIMUM/: UNKNOWN
FATALITIES: 0
INJURIES: 0
START DATE: 06/27/2025
START TIME: 10:29 PM CDT
START LOCATION: 7 N BISMARCK/ BURLEIGH COUNTY / ND
START LAT/LON: 46.9154 /-100.7906
END DATE: 06/27/2025
END TIME: 10:34 PM CDT
END LOCATION: 7 N BISMARCK / BURLEIGH COUNTY / ND
END LAT/LON: 46.9118 / -100.7989
SURVEY SUMMARY:
NUMEROUS PHOTOS AND VIDEO EVIDENCE FROM SOCIAL MEDIA SHOWED
THAT A TORNADO DEVELOPED OVER OPEN COUNTRY APPROXIMATELY 7
MILES NORTH OF BISMARCK AT 10:29 PM CDT. THE TORNADO DRIFTED
SLOWLY TO THE SOUTHWEST, AND THEN DISSIPATED AT 10:34 PM CDT.
A DAMAGE SURVEY TURNED UP NO DAMAGE CAUSED BY THIS TORNADO.
DUE TO THE FACT THAT THIS TORNADO DEVELOPED AND REMAINED OVER
OPEN COUNTRY, WITH NO DAMAGE FOUND, THE TORNADO WAS GIVEN A
RATING OF EFU, MEANING A TORNADO OF UNKNOWN INTENSITY.
EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES:
EF0.....65 TO 85 MPH
EF1.....86 TO 110 MPH
EF2.....111 TO 135 MPH
EF3.....136 TO 165 MPH
EF4.....166 TO 200 MPH
EF5.....>200 MPH
NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENTS AND PUBLICATION IN
NWS STORM DATA.
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