All articles tagged with #cme
A powerful M6.9 solar flare and its coronal mass ejection could deliver a glancing blow to Earth later this week, raising the odds of visible Northern Lights across Alaska, Canada, and parts of the northern United States on clear, dark nights as NOAA forecasts a potential G1–G2 geomagnetic storm; viewing will depend on how the CME interacts with Earth's magnetic field and local light pollution.
A restless Sun erupted an Earth-facing M6.9 flare from sunspot AR4513 on Aug. 25, launching a coronal mass ejection (CME) that may graze Earth later this week. Early NASA models suggest a glancing CME arrival around Aug. 28, which could boost geomagnetic activity if it interacts with a high‑speed solar wind stream from a coronal hole; the actual impact depends on arrival timing and the magnetic orientation of the CME. Forecasters will monitor updates, as a strong southward field could enhance northern lights activity.
SpaceWeather.com reports an Earth-directed CME from two solar filament eruptions with an ETA around Aug 11–12, potentially triggering auroras near the Perseid meteor shower, while a moderate G2 geomagnetic storm is already in progress as Earth sits in the CME wake. Separately, Comet 220P/McNaught underwent dramatic outbursts, brightening to binocular visibility with observers noting a shock-wave-like debris shell; the page also features aurora imagery and various sky-watching updates.
A moderate M5.8 solar flare from AR 4475 on June 29 prompted an S1 solar radiation storm warning (issued 16:00 UTC, canceled 16:36 UTC) with no CME detected at that time, though Western-limb location kept Earth at risk for energetic particles. Later, an Earth-facing X1.1 flare from AR 4479 near the solar disk center at 20:50 UTC produced a strong radio blackout (R3) and emitted Type II and IV radio bursts, with analysts awaiting coronagraph data to confirm any Earth-directed CME. Space‑weather conditions were quiet for now, but CME activity from later flares could bring unsettled to active conditions on June 30 into July 1, potentially triggering minor geomagnetic activity on approach of any CME.
An incoming coronal mass ejection could hit Earth's magnetic field today, possibly triggering geomagnetic storms from G1 to G3 and boosting auroras into mid-latitudes across the northern U.S.; the strongest activity is expected 11 a.m.–2 p.m. EDT, with elevated chances into the evening, and auroras could be visible as far south as northern Michigan, Maine, New York, Idaho, Illinois, and Oregon depending on conditions. NOAA has issued a G3 watch for June 8 and a G2 watch for June 9.
NOAA warns of a strong G3 geomagnetic storm on June 4–5 as multiple CMEs from sunspot region 4455 head toward Earth, potentially merging in a cannibal CME; this could spark auroras visible as far south as Illinois and Oregon after dark, with peak activity in the evenings and overnight hours, though timing and intensity remain uncertain.
Three coronal mass ejections are racing toward Earth and could produce glancing geomagnetic storms over the next few days, raising the odds of seeing the northern lights across parts of the northern United States tonight and possibly into May 20. If conditions peak at G1, viewers in Alaska, Washington, Montana, North Dakota, Minnesota, Michigan and Maine may spot auroras; with a stronger G2, Idaho and New York could join the show. Most CMEs will miss Earth, but lingering solar wind from a coronal hole could boost geomagnetic activity. The best viewing window is a few hours around local midnight in clear, dark skies away from light pollution, though visibility remains unpredictable depending on magnetic field alignment.
A massive solar flare produced a coronal mass ejection (CME) traveling toward Earth at roughly 650 km/s. The CME is expected to pass by Earth, possibly with a glancing impact late on May 12–13 UTC, potentially triggering auroral displays and light shows across northern latitudes. Met Office and NOAA are monitoring the situation, noting patchy UK cloud but the chance of Northern Lights across northern Scotland and similar latitudes.
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.
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.
NOAA foresees periods of G1-G2 (minor to moderate) geomagnetic storming on January 10–11, 2026, triggered by a CME that left the Sun on January 8.
NOAA's Space Weather Prediction Center forecasts periods of G1–G2 (Minor–Moderate) geomagnetic activity on Jan 10–11, 2026 as a CME released on Jan 8 arrives, signaling a moderate geomagnetic storm risk with potential effects on space- and radio-related operations.
NOAA has issued G1-G2 watches for January 3-4 due to expected CMEs from solar activity, which may cause minor to moderate geomagnetic storms, affecting HF radio and navigation signals.
NOAA has issued G1 to G2 watches from January 1-3, 2026, indicating expected increased geomagnetic activity due to coronal mass ejections (CMEs), which may cause minor to moderate disruptions in HF radio and navigation signals.
A significant M7.1 solar flare occurred on December 31, 2025, originating from sunspot region 4324, accompanied by a coronal mass ejection (CME) that is expected to cause minor G1 geomagnetic storm conditions on Earth by January 2, 2026, with the majority of the CME heading away from Earth.