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Tornado in McLean County, North Dakota

Tornado June 28, 2026 · McLean County, North Dakota

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Not rated

1.5 mi

Path length

50 yd

Path width

EF0EF1EF2EF3EF4EF5Unrated

The path drawn at its surveyed width of 50 yards (0.03 mi) — zoom in and the swath grows to true scale. Other tornadoes recorded nearby that day are shown faint.

Not rated. NOAA lists no rating for this tornado. Ratings come from surveying damage, and the National Weather Service now records “EFU” (unknown) when a tornado hit nothing a survey team could rate.

What the National Weather Service wrote

A brief stovepipe tornado was observed southwest of Riverdale. No known damage to evaluate and no other information available. By National Weather Service policy the tornado is rated EF-U (Unknown).

The wider storm

Surface low pressure tracked across the Northern Plains, leading to moisture advection and isolated severe thunderstorms across central North Dakota. Supercells developed during the evening hours, continuing until the late evening. The strongest wind gust report was near Minot Air Force Base in Ward County, where a trained spotter reported wind gusts of 60 to 70 mph. The largest hail occurred in McHenry County, with hail of 2 inches in diameter observed near Velva and Drake. A tornado was observed approximately 4 miles east-southeast of Riverdale in McLean County around 9 PM CDT. There was no known damage from this tornado, therefore there is no estimated wind speed and it is assigned a rating of EF-Unknown per NWS policy.

Began near Riverdale (47.4825, -101.2925).

Source: NOAA Storm Events Database, event 1358003. Narratives are written by the National Weather Service forecast office that issued the report.

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