Can I see the northern lights tonight in Wisconsin?
Unlikely, but a camera may catch a glow up north.
NOAA's Kp forecast peaks at 3 during Wisconsin's dark hours tonight. Across the 12 Wisconsin cities we cover, the aurora usually reaches the northern horizon at Kp 4 to 5.
Green: NOAA OVATION aurora model, forecast for 03:41 UTC 5 Nov (a 30 to 90 minute nowcast; the oval moves and brightens through the night). Dots: our verdict for tonight from the Kp forecast.
City by city
| City | Mag. lat. | Kp needed horizon / overhead | Peak Kp tonight | Tonight |
|---|---|---|---|---|
| Wausau | 54.3° | 4 / 6 | 3 | Long shot |
| Eau Claire | 54.1° | 4 / 6 | 3 | Long shot |
| Green Bay | 53.8° | 5 / 7 | 3 | Unlikely |
| Appleton | 53.6° | 5 / 7 | 3 | Unlikely |
| Oshkosh | 53.4° | 5 / 7 | 3 | Unlikely |
| La Crosse | 53.1° | 5 / 7 | 3 | Unlikely |
| Fond du Lac | 53.1° | 5 / 7 | 3 | Unlikely |
| Sheboygan | 53.1° | 5 / 7 | 3 | Unlikely |
| Madison | 52.5° | 5 / 7 | 3 | Unlikely |
| Milwaukee | 52.4° | 5 / 7 | 3 | Unlikely |
| Janesville | 52.1° | 5 / 7 | 3 | Unlikely |
| Kenosha | 52.0° | 5 / 7 | 3 | Unlikely |
Kp needed: the Kp at which the aurora usually reaches the northern horizon, and overhead. Peak Kp: NOAA's highest forecast 3-hour Kp in each city's dark hours tonight.
Kp forecast
NOAA planetary K-index, observed and forecast, in Eau Claire local time, with Eau Claire's thresholds.
Questions
Can I see the northern lights tonight in Wisconsin?
Long shot at best, from Eau Claire. NOAA's Kp forecast peaks at 3 during Wisconsin's dark hours tonight. Across the 12 Wisconsin cities we cover, the aurora usually reaches the northern horizon at Kp 4 to 5. You also need a clear, dark view to the north.
What Kp do you need to see the northern lights in Wisconsin?
About Kp 4 in the north of Wisconsin and Kp 5 in the south to see it low on the northern horizon; stronger storms bring it overhead.
Where is the best place to see it?
Somewhere dark with a clear view north, away from town lights. In Wisconsin, the further north you go, the lower the Kp you need.
Northern lights tonight in the US → · Aurora forecast this week
Data: NOAA Space Weather Prediction Center (planetary K-index forecast, 3-day forecast, 27-day outlook, OVATION aurora model). Magnetic latitudes: AACGM-v2. Darkness and Moon computed with Skyfield and JPL DE440. We do not forecast clouds: you need a clear view to the north. How the verdict is made.