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NOAA predicts July 30-31 aurora, 25% chance G1 storm

7/31/2026

Summary

Story summary

NOAA forecasts an aurora on July 30-31 with Kp 4 and a 25-30% chance of a G1 storm.
Two CMEs launched July 26-27 may graze Earth July 30-31, driving the forecast.
Visibility is expected in northern-tier states near the Canadian border, including Washington, Idaho, Montana, North Dakota and Minnesota.
Viewers should watch after dark, especially 10 p.m.-2 a.m., from dark sites using a tripod, wide-angle lens, low shutter speed or smartphone night-mode.

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Story summary

NOAA forecasts an aurora on July 30-31 with Kp 4 and a 25-30% chance of a G1 storm.
Two CMEs launched July 26-27 may graze Earth July 30-31, driving the forecast.
Visibility is expected in northern-tier states near the Canadian border, including Washington, Idaho, Montana, North Dakota and Minnesota.
Viewers should watch after dark, especially 10 p.m.-2 a.m., from dark sites using a tripod, wide-angle lens, low shutter speed or smartphone night-mode.