Review of the August 8, 2025 QLCS Tornadoes and High Winds

Tornadoes

The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:

EF0 Weak 65-85 mph	EF1 Moderate 86-110 mph	EF2 Significant 111-135 mph	EF3 Severe 136-165 mph	EF4 Extreme 166-200 mph	EF5 Catastrophic 200+ mph
Tornadoes that fail to impact any ratable damage indicators on the EF-Scale are rated EF-Unknown (EF-U)

Radar

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Radar reflectivity (MRMS RALA) - 9 PM CDT August 7, 2025, to 8 AM CDT August 8, 2025.

Radar imagery of Grand Forks area QLCS tornadoes (via KMVX in Mayville, ND - does not show Larimore South tornado). Notice several line-embedded circulations associated with weak tornadoes, including one that went through the center of Grand Forks, ND. Top left: Base reflectivity (0.5 deg). Top right: Base velocity (0.5 deg). Bottom left: Normalized rotation (NROT - 0.5 deg). Bottom right: Storm relative velocity (from 238 degrees at 57 knots - 0.5 deg).

Storm Reports

Local Storm Reports (LSRs) issued from August 7, 2025. Find them here.

Public Information Statement issued Saturday August 9, 2025, regarding tornadoes around the Grand Forks, ND, area:

Public Information Statement...DELAYED
National Weather Service Grand Forks ND
349 PM CDT Sat Aug 9 2025

...NWS Damage Survey for 08/08/2025 QLCS Tornado Event - Initial Issuance...

.Overview...A strong line of storms moved through eastern North Dakota 
and northwestern Minnesota through the early morning hours of Friday, 
August 8th 2025. This line of storms produced several brief tornadoes
across the area on the leading edge. with many of the tornadoes likely
rain-wrapped or intermittently touching down. Additional points of 
damage have been surveyed and future tracks may be possible as we
continue to review all available data sources. 

Reissuing for a correction for the Larimore South tornado. 

.Grand Forks/East Grand Forks...

Rating:                 EF1
Estimated Peak Wind:    100 mph
Path Length /statute/:  4.05 miles
Path Width /maximum/:   100 yards
Fatalities:             0
Injuries:               0

Start Date:             08/08/2025
Start Time:             04:14 AM CDT
Start Location:         2 SSW Grand Forks / Grand Forks County / ND
Start Lat/Lon:          47.8895 / -97.0834

End Date:               08/08/2025
End Time:               04:19 AM CDT
End Location:           1 S East Grand Forks / Polk County / MN
End Lat/Lon:            47.9144 / -97.0122

Survey Summary:
Intermittent path through town with higher end damage concentrated 
along path of correlated broad radar signature.



.Larimore South...

Rating:                 EF1
Estimated Peak Wind:    95 mph
Path Length /statute/:  1.29 miles
Path Width /maximum/:   100 yards
Fatalities:             0
Injuries:               0

Start Date:             08/08/2025
Start Time:             03:48 AM CDT
Start Location:         3 SSW Larimore / Grand Forks County / ND
Start Lat/Lon:          47.8658 / -97.649

End Date:               08/08/2025
End Time:               03:50 AM CDT
End Location:           2 S Larimore / Grand Forks County / ND
End Lat/Lon:            47.8762 / -97.626

Survey Summary:
Radar TDS and ground survey suggests a brief rain wrapped tornado
developed within the squall line. Will reassess the track when
high resolution satellite data comes in. 

.Mekinock...

Rating:                 EF1
Estimated Peak Wind:    105 mph
Path Length /statute/:  0.13 miles
Path Width /maximum/:   0 yards
Fatalities:             0
Injuries:               0

Start Date:             08/08/2025
Start Time:             04:05 AM CDT
Start Location:         Mekinock / Grand Forks County / ND
Start Lat/Lon:          48.0156 / -97.3665

End Date:               08/08/2025
End Time:               04:06 AM CDT
End Location:           Mekinock / Grand Forks County / ND
End Lat/Lon:            48.0162 / -97.3637

Survey Summary:
Brief touchdown currently surveyed. Will reassess the track when
high resolution satellite data comes in. 

.North of Grand Forks...

Rating:                 EF1
Estimated Peak Wind:    110 mph
Path Length /statute/:  3.79 miles
Path Width /maximum/:   50 yards
Fatalities:             0
Injuries:               1

Start Date:             08/08/2025
Start Time:             04:12 AM CDT
Start Location:         6 SSW Manvel / Grand Forks County / ND
Start Lat/Lon:          47.9808 / -97.2016

End Date:               08/08/2025
End Time:               04:17 AM CDT
End Location:           5 SSE Manvel / Grand Forks County / ND
End Lat/Lon:            48.0024 / -97.1264

Survey Summary:
This tornado likely rain wrapped intermittently produced damage
across its nearly 4 mile long path with wind speeds up to 110mph.


&&

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.


$$