TL;DR

Seven tornadoes were reported across Minnesota and Arizona on Monday, July 6, 2026. Six of the seven tornadoes touched down in Minnesota between 7:45 PM and 8:16 PM CDT, while one landspout formed in Arizona earlier in the evening.

What happened Monday evening

The National Weather Service received seven tornado reports on July 6, spanning two geographically distinct severe weather events—one in the Upper Midwest and one in the Desert Southwest.

Six tornadoes touched down in Minnesota during a roughly 90-minute window Monday evening, concentrated in the northwestern part of the state near Detroit Lakes. The tornadoes developed along a warm front as a shortwave trough moved across the northern High Plains, creating an environment with moderate instability and sufficient wind shear to support rotating storms.

The seventh tornado—a landspout—formed near Joseph City, Arizona, around 6:40 PM MST as monsoon moisture supported isolated thunderstorm development across the higher terrain of eastern Arizona.

Minnesota tornado outbreak

The first Minnesota tornado touched down at 1:45 PM CDT near Lake Bronson in Kittson County, where the NWS Grand Forks office confirmed a brief touchdown that flipped a trailer as it was pulling into a service station.

Activity intensified shortly after midnight UTC (7:00 PM CDT) as supercells developed along the warm front. Between 6:47 PM and 7:00 PM CDT, four tornadoes were reported in a cluster near Detroit Lakes and Westbury in Becker County:

  • 6:47 PM CDT, 3 WNW Westbury: Power poles knocked over with power flashes observed.
  • 6:58 PM CDT, 4 NW Detroit Lakes: Snapped trees, roof torn off a building, and debris reported on roadways by the Minnesota Department of Transportation.
  • 6:58 PM CDT, 3 S Westbury: Roof blown off a small building with debris on the roadway. Two injuries were reported via broadcast media, according to the NWS.
  • 7:00 PM CDT, 3.5 NW Detroit Lakes: Another building lost its roof.

The final Minnesota tornado touched down at 8:16 PM CDT, 3 NNW of Norcross in Grant County. A storm chaser near Herman reported a cone-shaped tornado on the ground for approximately two minutes before it lifted.

All Minnesota tornadoes remain rated "UNK" (unknown) pending National Weather Service damage surveys. EF-scale ratings are typically assigned after ground surveys are completed in the days following an event.

Arizona landspout

The lone Arizona tornado formed around 6:40 PM MST (00:40 UTC July 7) approximately one mile west-southwest of Joseph City in Navajo County. The NWS Flagstaff office classified the tornado as a landspout—a type of tornado that forms along a boundary beneath a developing thunderstorm, typically weaker and shorter-lived than supercell tornadoes.

The report came from an eastbound traveler, and the time and location were estimated. No damage was reported with this tornado.

Landspouts are not uncommon during Arizona's monsoon season, when increased mid-level moisture and daytime heating over elevated terrain create favorable conditions for pulse thunderstorms.

Broader severe weather context

Monday's tornado activity was part of a larger severe weather day that produced 157 wind reports and 13 hail reports across 18 states, from the Carolinas to the northern High Plains.

The Minnesota tornadoes developed in an environment the Storm Prediction Center had highlighted for supercell potential, with moderate buoyancy (MLCAPE of 1000 to 2000 J/kg) and effective bulk shear of 40 to 50 knots. The warm front provided the necessary low-level convergence and rotation to support tornadogenesis.

Meanwhile, widespread damaging wind reports dominated the severe weather picture farther south and east. The Carolinas, Virginia, and Texas accounted for dozens of downed trees and power lines as clusters of storms moved through during the afternoon and evening.

One fatality was reported in Zephyrhills, Florida, where a tree fell on a home during severe weather around 4:21 PM EDT, according to the Florida Division of Emergency Management.

Nighttime tornado risk

Five of the six Minnesota tornadoes occurred after 6:45 PM local time, with the final tornado touching down after 8:00 PM. Tornadoes that form in the evening or overnight hours are statistically more deadly than daytime tornadoes, primarily because people are less likely to receive warnings while asleep or away from active monitoring of weather conditions.

Outdoor warning sirens—common in tornado-prone states like Minnesota—are designed to alert people who are outside, not those indoors or asleep. Third-party weather apps are silenced by Do Not Disturb mode on most smartphones, though Wireless Emergency Alerts (WEA) for tornado warnings still break through on most phones by default.

For those who want an additional layer of alerting, especially during overnight severe weather events, phone-based alert systems that can bypass Do Not Disturb offer a way to ensure warnings are heard. VORTEX Pro, for example, places phone calls when a tornado warning is issued for a saved location—calls can ring through Do Not Disturb once Emergency Bypass is enabled for the number, unlike most third-party app notifications.

What's next

The Storm Prediction Center's Day 1 outlook issued Tuesday morning highlights a Slight Risk for severe thunderstorms from the northern High Plains into the Upper Midwest, with additional Marginal Risk areas across the southern Mid-Atlantic, Carolinas, East Texas, Great Basin, and southeast Arizona.

Widely scattered to scattered severe storms capable of large hail and damaging wind gusts are possible across the Slight Risk area today into tonight, as another shortwave trough moves across the northern Plains. The environment will feature moderate instability and sufficient shear to support supercells, though the risk for tornadoes appears lower than Monday's setup.

Residents across the Upper Midwest should remain weather-aware through Tuesday evening, particularly in South Dakota, North Dakota, and Minnesota, where storms are expected to develop during the afternoon and continue into the overnight hours.

VORTEX is a free web app at vortexintel.app that monitors severe weather nationwide. Pro ($4.99/month) places phone calls to your phone when a tornado or flash flood warning is issued for a location you care about — calls can ring through Do Not Disturb once you enable Emergency Bypass for the number, unlike most third-party app notifications.