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Solar Activity

Solar Flares Geomagnetic Storms Coronal Mass Ejections Solar Storms Sunspots Auroras Solar Cycle Solar Maximum Solar Cycles Space Weather

Cannibal Solar Storm From Sunspot 4455 Set to Reach Earth

NOAA has issued a G3 alert warning that the merged CME could widen auroral displays with short-lived radio disruption, increased satellite drag.

NOAA Issues G3 Geomagnetic Storm Watch for June 4–5

Three Solar Eruptions Including X1.0 Flare May Combine Before Reaching Earth

Helioseismology Shows Sun’s Magnetic Activity Is Becoming Confined to a Shallow Near‑Surface Layer

Sun Emitted a Record 19-Day Radio Burst

NOAA Forecasts Northern Lights Chance Saturday Night Across Northern U.S. and Canada

Two X-Class Solar Flares Hours Apart Trigger Dayside Radio Blackouts

Medieval Records and Tree Rings Pinpoint a 1200–1201 Solar Proton Event

Late CME Arrival Lowers Aurora Forecast to G1–G2 Tonight

Aurora Chances Nudge Up in Germany After Weak Solar Shockfront

NOAA Issues G2 Geomagnetic Storm Watch as March 16 CME Arrives, Expanding Aurora Potential

G2 Geomagnetic Storm Alert as CMEs Approach Earth, Aurora Possible Over Northern Germany Tonight

NOAA Issues G1 Geomagnetic Storm Watch as Northern Lights Possible Across 10 U.S. States

Nostradamus Prophecies Go Viral as US–Israel Strikes on Iran Spur Fresh Reinterpretations

Sun Registers First Spotless Days Since 2022 as New Sunspots Reappear

NOAA Ups Aurora Outlook: Kp 5 Could Bring Northern Lights to 15 U.S. States Tonight

Rare Northern Lights Opportunity in Germany This Weekend as Solar Peak Intensifies

NOAA Issues Geomagnetic Storm Watch as Auroras Likely Reach 11 U.S. States

Giant Sunspot AR4366 Keeps Firing Powerful Flares as Forecasters Watch for CME Threat

Earth-Facing Sunspot 4366 Fires Off New X-Class Flares as Agencies Issue Geomagnetic Watch