A powerful line of thunderstorms swept across Minnesota and the Twin Cities early Saturday morning, August 9, 2025, unleashing heavy rain, frequent lightning, hail, and strong winds that left thousands without power. The event prompted a series of severe weather alerts, highlighting the importance of public preparedness and understanding meteorological warnings.
The National Weather Service (NWS) Storm Prediction Center initially issued a Severe Thunderstorm Watch at 9:45 p.m. Friday for much of Minnesota, including the Twin Cities metro. The alert warned of conditions favorable for storms capable of producing wind gusts over 60 mph and hail between one and two inches in diameter. As a cold front moved through the state, the storms began to fire up.
By 1:40 a.m. Saturday, the system intensified, leading local NWS offices to issue Severe Thunderstorm Warnings for areas in cabin country, including Pequot Lakes and Crosslake, as well as for the Elk River and Monticello area. These warnings signify that severe weather is imminent or occurring. According to the National Weather Service, a thunderstorm is classified as severe if it produces wind gusts of at least 58 mph or hail of one inch in diameter or larger.
As the storms progressed, they brought torrential downpours, with rainfall rates reaching approximately two inches in 30 minutes in some locations, raising concerns about potential flash flooding. Around 2:35 a.m., storms northwest of the Twin Cities prompted warnings for Sherburne and Wright counties, where hail was reported. By 3:50 a.m., the line of storms began pushing into the Twin Cities metro, bringing loud thunder and intense lightning.
At 4:07 a.m., the NWS extended the Severe Thunderstorm Watch until 6 a.m. and expanded it eastward into Wisconsin. Shortly after, at 4:20 a.m., Xcel Energy reported that about 2,000 customers in and around the metro area were without power. By 4:35 a.m., residents in the Twin Cities were experiencing the full force of the storm, with heavy rain, constant lightning, and reports of hail in downtown Minneapolis.
Understanding the Alerts: Watch vs. Warning
Events like this underscore the critical difference between a weather watch and a warning. A Severe Thunderstorm Watch, issued by the SPC, means conditions are favorable for severe storms to develop. It is a call to “Be Prepared” and stay informed. A Severe Thunderstorm Warning, issued by local NWS offices, means a severe storm has been detected by radar or spotters and poses an imminent threat to life and property. This is a signal to “Take Action” immediately by seeking shelter in a sturdy building, away from windows.
Safety and Weekend Outlook
Emergency officials advise residents to have multiple ways to receive weather alerts, such as through mobile apps and NOAA Weather Radio. During a warning, the safest place is an interior room on the lowest floor of a substantial building. It is also crucial to avoid driving through flooded roadways, as it is difficult to gauge water depth, and just one foot of moving water can sweep a vehicle away.
Following the morning storms, the forecast for the rest of the weekend shows improvement. Saturday is expected to be warm and muggy with highs in the mid-80s as skies clear. Sunday will be mostly sunny and less humid, with temperatures remaining in the mid-80s before more chances for rain return later in the week.
