What's Happening?

A coronal mass ejection (CME) is currently heading towards Earth, potentially causing auroras visible across 16 U.S. states from Alaska to Wyoming tonight, March 31. This CME originated from an X.1.4 solar flare on March 30 and is traveling at approximately 1118 miles per second (1900 km/s). While the CME is not expected to hit Earth directly, a glancing blow could trigger geomagnetic storm conditions ranging from minor to moderate (G1 to G2), with the possibility of stronger G3 conditions. If these conditions occur, the northern lights could extend further south than usual, potentially reaching states like Illinois and Oregon. The NOAA Space Weather Prediction Center has issued a G2 storm watch for March 31, indicating moderate geomagnetic activity.

Why It's Important?

The potential geomagnetic storm could affect areas from Alaska to Wyoming, with auroras possibly visible in 16 states. The storm's intensity could vary, with stronger conditions allowing the northern lights to be seen further south than usual. While the visual spectacle poses no direct threat, geomagnetic storms can disrupt satellite operations and power grids. Residents in affected areas should be aware of possible minor disruptions in communication systems and power services. The visibility of auroras depends on the storm's strength and local weather conditions, such as cloud cover.

What's Next?

Geomagnetic activity is expected to peak at moderate (G2) levels tonight, March 31, and ease to minor (G1) levels by April 1. The best time to observe the northern lights is after nightfall, with activity potentially lingering overnight. The current forecast favors northern European observers, but if the CME arrives late, northern U.S. states and Canada may have better viewing opportunities. NOAA's forecast suggests activity will be strongest between 11:00 a.m. and 5:00 p.m. EDT, with minor storming possible until 2:00 a.m. on April 1.

Beyond the Headlines

To maximize chances of seeing the auroras, head to a dark location with a clear view of the northern horizon, away from city lights. Allow your eyes to adjust to the darkness for 20-30 minutes. Dress warmly and be patient, as auroras can appear and disappear quickly. Consider using a space weather app to stay updated on aurora forecasts.

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