Tag

Coronal Mass Ejection

All articles tagged with #coronal mass ejection

space3 days ago•121 min saved

NOAA Warns of G2 Geomagnetic Storm as CME Arrives Oct 9

NOAA has issued a G2 geomagnetic storm watch for October 9, following a coronal mass ejection (CME) launched by the Sun on October 6. The CME, traveling at approximately 560 km/s, is expected to reach Earth in the early hours of October 9, potentially triggering visible auroras as far south as Idaho and New York. This event follows an M1.4-class solar flare from sunspot region AR4549, which is currently positioned near the center of the Earth-facing side of the Sun. While exact arrival timing remains uncertain, forecasters anticipate moderate geomagnetic activity that could enhance northern lights visibility across the northern United States.

via Space|

#aurora-borealis #coronal-mass-ejection #geomagnetic-storm

space1 month ago•163 min saved

Seventeen-Spacecraft Observation Reveals Two-Part Solar Eruption

A December 2024 coronal mass ejection was tracked by a record 17 spacecraft spread across the solar system, showing the eruption consisted of two asymmetric lobes traveling at different speeds rather than a single front. This wide, off-axis coverage allowed scientists to reconstruct the CME’s two-dimensional shape and evolution, improving forecasts of how such solar storms propagate and boosting warning time for future crewed missions beyond Earth. Observations came from missions including SOHO, SDO, STEREO-A, MMS, ARTEMIS, Wind, ACE, GOES, DSCOVR, BepiColombo, MAVEN, Solar Orbiter, Europa Clipper, and others; the findings were published in Science Advances.

via Space|

#coronal-mass-ejection #heliophysics #multi-spacecraft

space-weather2 months ago•30 min saved

Earthward CME from M1.9 flare prompts August 2 geomagnetic watch

A long-duration M1.9 solar flare from Active Region 4492 on July 30, with an associated filament eruption, produced an Earth-directed partial-halo CME and a minor solar radiation storm. WSA-Enlil model runs place the CME’s arrival at Earth around August 2, with NOAA’s Space Weather Prediction Center forecasting G1–G2 (Minor–Moderate) geomagnetic storm conditions. Solar wind parameters have been mostly nominal, but disturbances from July 26–27 CMEs and the July 30 CME could arrive; increased drag, potential voltage alarms on power systems, spacecraft orientation corrections, and radio fade are possible, with auroras potentially visible as far south as New York and Idaho under favorable conditions.

via The Watchers - Watching the world evolve and transform|

#aurora #coronal-mass-ejection #geomagnetic-storm

space3 months ago•102 min saved

Sun unleashes a flare flood as Earth-bound CMEs lift July 4 aurora hopes

The Sun erupted with 10 M-class flares in 24 hours, with several coronal mass ejections headed toward Earth. NOAA forecasts suggest geomagnetic activity (G1–G2) could spark auroras across parts of the northern U.S. around the July 3–4 weekend, depending on CME interactions and magnetic-field orientation; viewing may be hindered by twilight in some areas.

via Space|

#aurora #coronal-mass-ejection #noaa

space3 months ago•102 min saved

X-Class Solar Flare and CME May Spark July 4 Aurora Show

An X1.1 solar flare from sunspot AR4479 on June 30 produced Radio Blackouts on the daylight side of Earth and launched a CME. While initial analyses suggested limited Earth impact, NOAA later issued a G2 geomagnetic storm watch for July 3, indicating that at least part of the CME could reach Earth and trigger geomagnetic activity. If the CME’s magnetic field is oriented favorably, auroras could be visible across parts of the northern U.S. during the July 4 weekend.

via Space|

#aurora #coronal-mass-ejection #july-4

space3 months ago•15 min saved

The 90-Second Sunstorm That Plunged Quebec Into Darkness—and Redefined Grid Risk

On March 13, 1989, a solar coronal mass ejection induced currents that collapsed Quebec's Hydro-Québec grid in 90 seconds, leaving 6 million people without power for hours; the event exposed vulnerabilities of long-distance transmission to space weather and spurred major investments in grid protection and real-time solar forecasting across North America.

via Space Daily|

#coronal-mass-ejection #geomagnetic-storm #grid-resilience

space-weather3 months ago•14 min saved

Earth as Battery: The 1859 Carrington Event Sparks Telegraph Chaos

The 1859 Carrington solar storm unleashed a fast coronal mass ejection that slammed Earth’s magnetosphere, turning hundreds of miles of telegraph wires into a giant generator; operators unplugged their batteries and still transmitted as sparks flew and lines smoked, with auroras visible far from the poles. The event illustrated how geomagnetically induced currents ride along ground conductors, a risk echoed in later outages like the 1989 Quebec blackout and a present-day grid whose transformers and infrastructure would face severe disruption—yet warnings from space weather monitoring can provide precious minutes to protect vulnerable equipment.

via Space Daily|

#carrington-event #coronal-mass-ejection #geomagnetically-induced-currents

space3 months ago•13 min saved

STEREO-A’s lone encounter rewrites what a Carrington-scale solar storm would do to Earth

NASA’s STEREO-A happened to sit in the direct path of the July 2012 Carrington-class CME, taking the full hit while Earth avoided a direct strike. The spacecraft’s instruments recorded unprecedented in-situ measurements of magnetic fields, plasma density, and shock structure, creating a canonical dataset for extreme solar storms. Analyses using that data suggest a direct Carrington-type event could drive geomagnetic disturbances powerful enough to damage hundreds of high-voltage transformers across North America and Europe, underscoring the value of even hours of warning. The event also anchors statistical risk estimates (roughly 10–15% per decade) and confirms that a future Earth-directed storm could have devastating consequences if not anticipated.

via Space Daily|

#coronal-mass-ejection #geomagnetic-storms #infrastructure-risk

science4 months ago•34 min saved

Cannibal solar storm could paint southern skies with auroras this Friday

A rare cannibal CME—a merger of an X-class flare from sunspot 4455 and following CMEs—could reach Earth this Friday, triggering a strong geomagnetic storm and lighting up auroras far farther south than usual, visible across central England and Wales and parts of the US such as Iowa, Ohio, Pennsylvania, Massachusetts, Rhode Island and New Hampshire.

via Yahoo News Canada|

#aurora-borealis #coronal-mass-ejection #science

space4 months ago•58 min saved

Earth‑bound cannibal CME from rare anti‑Hale sunspot sparks auroras across 23 states

A cannibal coronal mass ejection from sunspot 4455—a rare anti‑Hale sunspot—is expected to slam into Earth this afternoon, likely triggering strong geomagnetic storms (G3–G4) and widespread auroras visible as far south as 23 U.S. states, with NOAA projecting mid‑afternoon arrival and skywatchers from the Pacific Northwest to the Northeast potentially seeing the lights.

via Live Science|

#auroras #coronal-mass-ejection #geomagnetic-storm

space5 months ago•5 min saved

Sun Erupts M5.7 Flare; Auroras Expected Across High Latitudes This Week

A powerful M5.7 solar flare on May 10 released a CME that mostly misses Earth but could graze our planet, raising the chance of northern lights across high latitudes in the coming days. NOAA and the UK Met Office forecast a weak geomagnetic storm around May 13 as sunspot regions AR4436 and AR4432 evolve, with potential for more activity and even X-class flares in the near term.

via The Daily Galaxy|

#aurora #coronal-mass-ejection #geomagnetic-storm

space-weather5 months ago•72 min saved

Sun unleashes M5.7 flare and CME; auroras likely this week

A powerful M5.7 solar flare from sunspot AR4436 on May 10 produced a CME that could skim Earth around May 13, potentially triggering minor geomagnetic storms and visible auroras at high latitudes; a radio blackout was reported over the Atlantic during the event, and forecasters warn more solar activity may follow as sunspots evolve.

via Space|

#aurora #coronal-mass-ejection #geomagnetic-storm

space5 months ago•69 min saved

Twin X-class solar blasts knock out Earth radio signals

Two X2.5 solar flares erupted from sunspot AR4419 on the Sun’s western limb within seven hours, triggering radio blackouts on Earth’s dayside. The flares were the strongest in about 78 days; while a direct CME impact is unlikely, forecasters warn a glancing blow could spark geomagnetic activity and auroras. A preceding “sympathetic” flare involved eruptions from two sunspot regions on opposite sides of the Sun.

via Space|

#ar4419 #coronal-mass-ejection #radio-blackout

space6 months ago•50 min saved

Midwest and beyond could see northern lights as solar storm approaches this weekend

NOAA’s Space Weather Prediction Center warns of a G2 geomagnetic storm on March 19 (UTC) as multiple coronal mass ejections head toward Earth. The activity could push the auroral oval far south, with potential sightings in mid-latitudes including Illinois and New York, depending on CME timing and local conditions. Impacts could begin as early as 11 p.m. ET on March 18, with strongest activity 2–8 a.m. ET on March 19 and possibly lingering into March 20, and a wider window increases the chance for aurora displays given clear skies and favorable magnetic orientation.

via Space|

#auroras #coronal-mass-ejection #geomagnetic-storm

science7 months ago•6 min saved

Aurora Alert: Northern Lights Visible Across 10 U.S. States Tonight

NOAA SWPC forecasts the Northern Lights will be visible tonight across 10 northern U.S. states (including Alaska, Washington, Idaho, Montana, the Dakotas, Minnesota, Wisconsin, Michigan and Maine) due to solar winds and a coronal mass ejection; best viewing from about 10 p.m. to 2 a.m. under dark skies away from city lights, with additional chances around the March 20 spring equinox.

via The Daily Galaxy|

#aurora-borealis #coronal-mass-ejection #northern-lights