Skywatchers in northern Michigan and the Upper Peninsula have a shot at catching the northern lights Friday night and again Saturday night, but a run of clouds — and possibly rain or snow — could get in the way of the view. The timing lines up with a burst of solar activity that forecasters have been tracking since earlier in the week.
The northern lights could be visible in northern Michigan and the U.P. Friday night, Nov. 6, and Saturday night, Nov. 7, according to the Detroit Free Press. The same report cautions that clouds, and in some areas rain or snow, could limit visibility across the state. The Free Press account, which draws heavily on NOAA data, also pegs Saturday night's geomagnetic activity at a G0 storm level with a Kp index of 4 — a relatively modest reading.
Forecasters Disagree on How Strong the Storm Will Be
Not every outlet is reading the space weather the same way. Forbes reported that the geomagnetic field is likely to reach G1, or Minor, storm levels, with a chance of reaching G2, or Moderate, levels sometime between Nov. 6 and Nov. 8. The outlet separately noted that a G1-class storm could begin around 5 p.m. EST Friday, with Kp 5 conditions forecast, potentially lasting into Saturday and Sunday.
A National Oceanic and Atmospheric Administration Space Weather Prediction Center post described a G1 Minor geomagnetic storm watch for the November 7 UTC-day, spanning the evening of Nov. 6 into Nov. 7 Eastern time. Whether the activity lands closer to the Free Press's calmer G0 reading or the stronger G1-to-G2 range described elsewhere remains unresolved, with each outlet sticking to its own numbers.
What's Driving the Activity
Part of the reason for the buzz is unusually fast solar wind. The U.K. Met Office forecast solar wind speeds between 342 and 404 miles per second, according to Space.com, considerably faster than the typical pace of around 249 miles per second. That same report notes that under G1 conditions, auroras may be visible from northern Michigan and Maine, while a jump to G2 could push the display as far south as New York and Idaho.
Forbes listed Michigan among the states where the aurora might be visible if G1 conditions materialize and skies stay clear, alongside Alaska, Washington, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Maine, Vermont and New Hampshire. Whether you actually see the aurora depends on solar wind strength, cloud cover, light pollution and the direction of the interplanetary magnetic field, Forbes notes. The outlet recommends finding a dark location with a clear view of the northern horizon to improve the odds.
Metro Detroit's Weekend Weather Outlook
Cloud cover is shaping up to be the biggest obstacle downstate. Friday looks chilly, mostly cloudy and breezy in Metro Detroit, according to ClickOnDetroit. The outlet's forecast says conditions begin improving Saturday as the storm system moves east and drier air returns.
By Sunday, the outlook brightens considerably, with mostly sunny skies and afternoon highs in the upper 50s expected across the region, per the same forecast. For anyone chasing a glimpse of the aurora over the weekend, that improving trend could matter — though the available forecasts don't spell out exactly how clear the skies will be in the far north during the best viewing hours Friday and Saturday night.
