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Geomagnetic Storms

Aurora Borealis Auroras Coronal Mass Ejections Northern Lights Solar Activity Solar Flares Coronal Holes Impact on Technology Aurora Australis Impact on Earth G1 and G2 Storms Solar Wind Effects on Technology Effects on Earth Earth's Magnetosphere Plasma Movement G1 Minor Storm Conditions Severe Storm Watch Solar Emissions Technological Impacts Forecasting G1 Minor Storms G1 Conditions Cannibal CMEs Historical Events Solar Storms Minor Geomagnetic Storms G4 Severe Storms Research and Protection Plasma Ejections NOAA

Late CME Arrival Lowers Aurora Forecast to G1–G2 Tonight

NOAA now expects a moderate geomagnetic storm due to the slower‑than‑forecast impact.

Sunspot AR4366 Hurls X-Class Flares as CME Is Forecast to Brush Earth Thursday

NOAA Forecasts Minor Geomagnetic Storm Tonight, Northern Lights Possible From Alaska to Maine

Solar Orbiter Captures 'Magnetic Avalanche' Behind Major Solar Flare

NOAA Warns of Strong Geomagnetic Storm Tonight as Auroras May Reach Unusually Far South

NOAA Sees Northern Lights Chance Across Northern U.S. This Weekend With Minor Geomagnetic Storm

Northern Lights Possible in Up to 15 U.S. States Tonight, NOAA Says

Geomagnetic Storms To Expand Aurora Visibility Across Northern U.S. This Weekend

Aurora Outlook Tightens for Dec. 23 After Minor Storm, With Northern U.S. Still in Play

G3 Geomagnetic Storm Possible Today as Full-Halo CME Reaches Earth

NOAA Issues G2 Geomagnetic Storm Watch as Giant Sunspot Cluster Faces Earth

NOAA Issues Strong Geomagnetic Storm Watches as CMEs Near Earth, Raising Aurora Odds

Strong Geomagnetic Storm Triggers Widespread Aurora With More Possible Tonight

Geomagnetic Storm Hits G3 as Earth‑Directed CME Approaches

Simulations Reveal Space Tornadoes That Current Monitors Miss, Prompting Solar‑Sail Probe Concept

Aurora Outlook Eases After Strong Storms, With Northern U.S. Still in Play Tonight

NOAA: Minor Geomagnetic Storm Could Make Northern Lights Visible in Up to 16 States Aug. 19–20

G2 Geomagnetic Storm Watch Expands Northern Lights Visibility to 15 States

NOAA Issues G2 Geomagnetic Storm Watch as AR 4168 CME Nears Earth

NOAA Forecasts Aurora Displays From Washington to Maine on July 2–3