Story perspectives

CMEs Could Spark US Northern Lights July 30-August 1

7/31/2026

Summary

Story summary

The United States may see northern lights on July 30-31 and August 1 when coronal mass ejections launched July 26-27 approach Earth.
NOAA forecasts Kp 4 on August 1 and a G2 storm with Kp 5.67 on August 2, followed by a G1 storm.
The U.K. Met Office expects the CMEs to mostly miss Earth, limiting impacts July 31-August 2, and visibility is strongest in Washington, Idaho, Montana, North Dakota, Minnesota, Wisconsin, Michigan, Maine, Vermont and New Hampshire.

1 of 1

Story summary

The United States may see northern lights on July 30-31 and August 1 when coronal mass ejections launched July 26-27 approach Earth.
NOAA forecasts Kp 4 on August 1 and a G2 storm with Kp 5.67 on August 2, followed by a G1 storm.
The U.K. Met Office expects the CMEs to mostly miss Earth, limiting impacts July 31-August 2, and visibility is strongest in Washington, Idaho, Montana, North Dakota, Minnesota, Wisconsin, Michigan, Maine, Vermont and New Hampshire.