Moderate geomagnetic storm confirmed (G2)
Measured by NOAA · peak Kp 6 · aurora possible to about 55° geomagnetic latitude
Aurora is possible north of the line, as far as Michigan and Montana.
The line is approximate: the forecast reach is to about 55° geomagnetic latitude.
Forecast: NOAA Space Weather Prediction Center. Geomagnetic model: IGRF-14 (IAGA). Outlines: Natural Earth, US Census Bureau (public domain)
NOAA's measurements confirm a moderate (G2) geomagnetic storm, peaking at Kp 6. At that level the aurora could be seen to about 55° geomagnetic latitude: in North America, as far as Michigan and Montana.
For the background, read Aurora: how far south and when in Sun & aurora.
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