Damage Survey PNS (Max: EF1) from KDLH

[akr...@iastate.edu]

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Text Permalink: IEM Website (202607021852-KDLH-NOUS43-PNSDLH)

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Max EF Rating Below: (EF1)

Count by Rating:

EF-1 ⇒ 1

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014 
NOUS43 KDLH 021852
PNSDLH
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-030700-

Public Information Statement
National Weather Service Duluth MN
152 PM CDT Thu Jul 2 2026

...NWS DAMAGE SURVEY FOR 6/30/2026 TORNADO...

.OVERVIEW...

A line of storms in the early morning hours of Tuesday June 30 
produced a single brief tornado over Murphy Lake in central St 
Louis County.

.MURPHY LAKE TORNADO...

Rating:                 EF-1
Estimated peak wind:    105 mph
Path length /Statute/:  1.6 miles
Path width /Maximum/:   100 yards
Fatalities:             0
Injuries:               0

Start date:             6/30/2026
Start time:             12:36 AM
Start location:         5 ESE Zim
Start Lat/Lon:          47.2865 / -92.5035

End date:               6/30/2026
End time:               12:38 AM
End location:           5 NW Melrude
End_lat/lon:            47.3032 / -92.4784

SURVEY_SUMMARY: A brief tornado developed along a line of storms
over Murphy Lake, producing a clear and consistent path of tree
damage with hundreds of trees damaged including dozens of trees
uprooted or snapped near the base. Based on an NWS Storm Survey, 
local resident reports, and drone imagery provided by St Louis 
County Emergency Management, an initial assessment has been
completed. The path details will be refined upon further review 
of drone imagery and any additional reports received.

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. 

$$

JJM

[akr...@iastate.edu]

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Text Permalink: IEM Website (202607081807-KDLH-NOUS43-PNSDLH)

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Max EF Rating Below: (EF1)

Count by Rating:

EF-1 ⇒ 1

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538 
NOUS43 KDLH 081807
PNSDLH
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-090015-

Public Information Statement
National Weather Service Duluth MN
107 PM CDT Wed Jul 8 2026

...NWS DAMAGE SURVEY FOR 6/30/2026 TORNADO - Update 1...

.UPDATE...

The track was finalized using drone imagery courtesy St Louis
County Emergency Management. The length and rating/peak wind has
not changed but there was a minor adjustment to increase the path
width and slightly change the end location. The track in the
digital Damage Assessment Toolkit was also adjusted slightly to
represent the center of the estimated path of the tornado. No
additional changes are anticipated for this tornado, and after an
extensive review of damage photos, aerial imagery, and
conversations with Emergency Managers, spotters, and the public,
no other tornadoes have been identified for this thunderstorm
episode on June 29-30, 2026. The description for the tornado track
below was also updated to add more detail.

.OVERVIEW...

A line of storms in the early morning hours of Tuesday June 30 
produced a single brief tornado over Murphy Lake in central St 
Louis County.

.MURPHY LAKE TORNADO...

Rating:                 EF-1
Estimated peak wind:    105 mph
Path length /Statute/:  1.6 miles
Path width /Maximum/:   175 yards
Fatalities:             0
Injuries:               0

Start date:             6/30/2026
Start time:             12:36 AM
Start location:         5 ESE Zim
Start Lat/Lon:          47.2865 / -92.5035

End date:               6/30/2026
End time:               12:38 AM
End location:           5 NW Melrude
End_lat/lon:            47.3024 / -92.4783

SURVEY_SUMMARY: A brief tornado developed along a line of storms
over Murphy Lake, producing a clear and consistent path of tree
damage with hundreds of trees damaged including dozens of trees
uprooted or snapped near the base. The storm began southwest of
Murphy Lake, reaching properties on the southwest arm of the lake
and traveling northeast, crossing over the peninsula of land in
the center of the lake, then tracking northeast to just north of
the public boat ramp on the eastern side of the lake. The tornado
then tracked over the railroad tracks and ended in an area of
vegetation west of Highway 53, with no evidence that the tornado
crossed the highway.

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. 

$$

JJM