A series of thunderstorms developed within an environment favorable for tornadoes across northeast Minnesota. Storms developed in northern Minnesota and moved east-northeasterly, eventually crossing into Ontario. Several supercell thunderstorms were observed which produced heavy rainfall, hail, damaging straight-line winds and several tornadoes.

Thunderstorm Wind in KOOCHICHING, MINNESOTA
From 17-JUL-19 18:45:00 to 17-JUL-19 18:46:00 (CST-6)
Location: SILVERDALE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Five pine and aspen trees about 2 feet in diameter were knocked down due to straight line winds.

Thunderstorm Wind in KOOCHICHING, MINNESOTA
From 17-JUL-19 17:20:00 to 17-JUL-19 17:21:00 (CST-6)
Location: BIRCHDALE
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The gust was recorded by the MnDOT Road Weather Station MN026 at Birchdale MN-11 Mile Post 157.

Hail in KOOCHICHING, MINNESOTA
From 17-JUL-19 17:59:00 to 17-JUL-19 18:00:00 (CST-6)
Location: LITTLE FORK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in KOOCHICHING, MINNESOTA
From 17-JUL-19 17:49:00 to 17-JUL-19 17:50:00 (CST-6)
Location: LITTLE FORK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were down along Highway 65 near Littlefork with some of the trees taking down power lines as well.

Thunderstorm Wind in KOOCHICHING, MINNESOTA
From 17-JUL-19 17:49:00 to 17-JUL-19 17:50:00 (CST-6)
Location: LITTLE FORK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Bleachers were damaged at the fairgrounds and a tree was down on a power line in Littlefork.

Tornado in ST. LOUIS, MINNESOTA
From 17-JUL-19 19:01:00 to 17-JUL-19 19:16:00 (CST-6)
Location: ORR PUBLIC ARPT
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The supercell which produced the Gheen Hill tornado began north
of Togo in far southeast Koochiching County. It traveled toward
the east-northeast and gradually organized. Sporadic straight-line
wind damage was observed a few miles northwest of Gheen and west
of US Highway 53. The tornado developed 1 mile west of US-53 and
tracked toward the east-northeast. We received several photographs
from a spotter who observed the tornado north of Gheen Hill
before it crossed US-53. The tornado crossed Rice Lake and
strengthened to low-end EF-1 intensity shortly after. The tornado
continued east-northeastward across the easternmost portion of
Johnson Road. It weakened and dissipated just to the east of an
ATV trail northwest of Gheen. Aside from the few spotter photos of
this tornado, high-resolution satellite imagery was critical to
assessing the location, path, width, and peak intensity of this
tornado. We are very grateful to the spotter who provided the only
known photos of this tornado. Additional help in identifying this
tornado's path was provided by a private sector meteorologist from Grand
Rapids, MN. This supercell thunderstorm would go on to produce
the Carlson Lake tornado.

Tornado in ST. LOUIS, MINNESOTA
From 17-JUL-19 19:23:00 to 17-JUL-19 19:37:00 (CST-6)
Location: ORR
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The supercell which produced the Gheen Hill tornado continued to
move toward the east-northeast and a second mesocyclone developed
a short time after the Gheen Hill tornado dissipated. The Carlson
Lake tornado developed approximately 500 yards west of the Elbow
River and six-tenths of a mile north of the western end of Ban
Lake. The tornado tracked toward the northeast producing sporadic
EF-0 damage to trees. The tornado turned due east approximately
one mile west of Carlson Lake and intensified. The tornado produced
a swath of EF-1 damage, which was a maximum of 300 yards wide and
passed over Carlson Lake. Tree damage corresponding to high-end
EF-1 wind speeds was noted over much of this area. The tornado
turned toward the northeast after crossing Carlson Lake and
crossed over Elbow Lake Forest Road before gradually weakening.
The tornado dissipated shortly after crossing Shuster Road. We are
very grateful for the help identifying this tornado's path
provided by a private meteorologist in Grand Rapids, MN. High-
resolution satellite imagery was critical to assessing the
location, path, width, and peak intensity of this tornado.

Tornado in ST. LOUIS, MINNESOTA
From 17-JUL-19 18:49:00 to 17-JUL-19 19:06:00 (CST-6)
Location: KABETOGAMA
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A damage survey of a tornado within Voyageurs National Park has
been completed and confirmed a tornado from approximately Locator
Lake, approximately 6.4 miles north of Kabetogama, to Marion Bay
on Rainy Lake, approximately 9.2 miles north-northeast of
Kabetogama. The tornado likely extended farther northeast across
Rainy Lake and possibly into Canada, so the length of this tornado
should be considered an estimate. The end point location is
estimated from video of the tornado moving over Rainy Lake. This
survey was completed using photos and videos from Voyageurs
National Park, the public, and business owners in the region. Very
special thanks to Voyageurs National Park for sharing aerial
images of the damage path which was critical to assessing the
path, width, and severity of this tornado.

Thunderstorm Wind in ITASCA, MINNESOTA
From 17-JUL-19 18:27:00 to 17-JUL-19 18:30:00 (CST-6)
Location: EFFIE
Magnitude: 60.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Two large wooden outhouses were blown over by the winds at the North Star Rodeo grounds north of Effie. One of the outhouses was completely destroyed while the other remained intact.