Overview

• NOAA’s Space Weather Prediction Center has a watch in effect for late Monday into early Tuesday, projecting Kp near 6 with a nonzero chance of G4 if the magnetic field orientation proves favorable.
• Aurora viewing is possible across up to 18 U.S. states, including parts of Nebraska, Iowa, Illinois, Michigan, New York and Oregon, with the best window roughly 10 p.m. to 2 a.m. local time where skies are clear.
• Forecasters expect the CME to arrive late Sept. 1 into early Sept. 2; confidence of impact is high, but intensity and timing remain uncertain until DSCOVR and ACE sample the solar wind 20–50 minutes beforehand.
• Satellite operations, radio and GPS signals, and portions of the power grid could experience effects if conditions strengthen, so operators are monitoring for potential disruptions.
• Clouds may hinder views in sections of the Northwest and parts of the Northern Plains, with clearer prospects over New England and the Great Lakes, and UK forecasters also anticipate enhanced aurora potential.