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Cme

All articles tagged with #cme

science1 month ago

CME Arrival Triggers G4 Geomagnetic Storm Watch for Jan 20

NOAA’s Space Weather Prediction Center has issued a G4 (Severe) Geomagnetic Storm Watch for January 20 due to a coronal mass ejection released January 18 in association with an energetic solar flare; the CME is expected to reach Earth from late January 19 to early January 20, with storm levels potentially ranging from G1 to G3 upon arrival and the passage likely continuing through January 20, with residual effects possible on January 21. Forecasters have a fair degree of confidence in the timing and will provide updates as conditions evolve.

via NOAA Space Weather Prediction Center (.gov)|
#cme#geomagnetic-storm#noaa
Earth-ward CME from X-class flare could spark auroras within 24 hours
space1 month ago

Earth-ward CME from X-class flare could spark auroras within 24 hours

An X1.9 solar flare from the Sun triggered a fast Earth-directed coronal mass ejection (CME) forecast to reach Earth within about 24 hours. If the CME’s magnetic orientation (Bz) is southward, it could couple with Earth’s magnetosphere and drive strong (G3) to severe (G4) geomagnetic storm conditions, potentially lighting up auroras as far south as parts of the U.S. (e.g., Northern California to Alabama). Forecasters caution that CME arrivals are hard to pin down and depend on magnetic orientation; disruptions to satellites, GPS, and radio signals and increased atmospheric drag on spacecraft are possible alongside spectacular auroral displays depending on the event’s exact geometry and timing.

via Space|
#aurora#cme#note-only-five-allowed
Scientists Detect First Explosive Burst from Nearby Star
science-and-exploration3 months ago

Scientists Detect First Explosive Burst from Nearby Star

Astronomers have confirmed the first observation of a coronal mass ejection (CME) from a star other than the Sun, using ESA's XMM-Newton and LOFAR telescopes. The CME, originating from a red dwarf star 130 light-years away, was extremely fast and dense, capable of stripping away planetary atmospheres, which has significant implications for the habitability of planets orbiting active stars.

via European Space Agency|
#cme#exoplanets#science-and-exploration
Severe Solar Storms May Bring Northern Lights to 21 U.S. States
science3 months ago

Severe Solar Storms May Bring Northern Lights to 21 U.S. States

A severe geomagnetic storm watch has been issued for the U.S. due to multiple coronal mass ejections from the sun, with the strongest expected to hit Earth on November 12, 2025. This could lead to spectacular northern lights visible as far south as Alabama and California, but also poses a risk to critical technology infrastructure. The storm's intensity is classified as G4, a rare level, and observers are encouraged to find dark skies for a chance to see the auroras.

via MLive.com|
#cme#geomagnetic-storm#northern-lights