Joint Report Forecasts Low Solar Activity with Flare and Storm Potential

The Joint USAF/NOAA Solar Geophysical Activity Report, issued on May 25, 2026, indicates low solar activity with quiet to unsettled geomagnetic conditions, forecasting a chance for M-class flares and potential minor to major geomagnetic storms in the coming days.

Solar activity remained low over the past 24 hours, with 10 sunspot regions currently visible on the solar disk. Forecasters anticipate continued low solar activity through May 28, with a 35% chance for M-class flares each day. The probability for more powerful X-class flares and proton events remains low at 5%.

Geomagnetic conditions were quiet to unsettled, with solar wind speed peaking at 438 km/s. The geomagnetic field is expected to be quiet on May 26, transitioning to quiet to active levels on May 27 and 28. High latitudes face a 25-35% chance of minor storms and a 20-30% chance of major-severe storms over the forecast period.

The Penticton 10.7 cm Flux is predicted to rise from 142 to 150 over the next three days, suggesting a slight increase in solar radio emissions.