Articles tagged "coronal mass ejection"

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Unsettled to active geomagnetic field levels expected, G1 geomagnetic storm watch in effect

Unsettled to active geomagnetic field levels are possible on January 5, 2021, due to the onset of an anticipated Solar Sector Boundary Crossing (SSBC) followed by coronal hole influence late in the day. G1 - Minor geomagnetic storm conditions are likely on January 6...

January 05, 2021


Moderate geomagnetic storm in progress (June 7, 2013)

A moderate G2 Geomagnetic Storm (Kp=6) is currently in progress due the arrival of the fast flow from the low-latitude coronal hole at the northern hemisphere.​ Bz component of Interplanetary Magnetic Field (IMF) has been tipping sharply

June 07, 2013


M1.0 solar flare erupted from AR 1760

Impressive M1.0 solar flare erupted at 20:00 UTC on May 31, 2013. Event started at 19:52 UTC and ended at 20:06 UTC. The source of eruption was Active Region 1760. This region is small but appears to have a large amount of shear in the central spot. M1.0 solar

May 31, 2013

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Geomagnetic storms - basic terms, data, plots and graphs

A coronal mass ejection (CME) that erupted on March 15, 2013, hit Earth's magnetic field at 06:00 UTC on March 17, 2013. The solar wind speed reached 700 km/s and sparked a moderately strong G2 (Kp=6) geomagnetic storm and minor S1 solar radiation

March 18, 2013


Coronal mass ejection to reach planet on February 14

Coronal mass ejection (CME) is seen in the latest images, as the result of a filament lifting off in the northern hemisphere. Geomagnetic field activity is expected to increase to unsettled to active levels, with high latitude minor storm intervals. It could produce

February 12, 2012


Blocks of ice from the Jorge Montt Glacier in southern Chile stolen and then found

Somebody stole blocks of ice from the Jorge Montt Glacier in southern Chile. Agents with Chile's National Forest Service (CONAF) claim that ice was being stolen from the glacier, located in the Chilean Patagonia region some 1,700 kilometers (1,056 miles) south of

February 02, 2012


Three M-class solar flares at northeast limb

An M1.1 Solar Flare peaked at 15:08 UTC Monday morning and was centered around a new region located on the Northeast Limb. Stay Tuned for increasing solar activity.The second and third M-Class Flares of the day has taken place around the new region hiding on the

October 31, 2011


Sun blasted CME toward Mars

A bright CME blasted off the sun on Oct. 22nd, and it appears to be heading for Mars. Analysts at the Goddard Space Weather Lab expect the cloud to reach the Red Planet on Oct. 26th (forecast track). A brief discussion of what CMEs can do to Mars follows this SOHO

October 23, 2011


Significant CME heading toward Mars

A significant CME blasted off the sun today, Oct. 22nd, around 1100 UT. Analysts at the Goddard Space Weather Lab say the cloud is heading for Mars, due to hit the Red Planet on Oct. 26th.  (movie, forecast track)While looking at the latest STEREO Ahead images,

October 22, 2011


Sun is active again: M1.6 flare & sundiving comet

A Solar Flare reaching M1.6 peaked at 03:25 UTC Thursday morning and appears to be centered off the northwest limb near Sunspot 1318 which is rotating out of direct earth view.Solar activity remains at fairly low levels with only small to mid sized C-Class flares

October 20, 2011


Farside CME hurled toward Mercury and Venus

An active region on the far side of the sun erupted on October 14 and hurled a significant coronal mass ejection toward Mercury and Venus. Analysts at the Goddard Space Flight Center expect the cloud to hit the innermost planet on October 15 around 08:30 UTC....

October 14, 2011


Minor geomagnetic storming underway

Minor geomagnetic storming (G1 on the Geomagnetic Storm Scale) is underway following the arrival at Earth of 1 or more Coronal Mass Ejections that erupted from the Sun late last week and into the weekend.  Activity is not expected to strengthen much beyond current

October 06, 2011


Comet and Coronal mass ejection

A comet discovered by amateur astronomers on Friday, Sept. 30th, disintegrated in spectacular fashion the very next day when it plunged into the sun. The Solar and Heliospheric Observatory recorded the comet's last hours. The end was punctuated by an unexpected

October 04, 2011


Double eruption on Sun

On October 1st around 10:17 UT, widely-spaced sunspots 1302 and 1305 erupted in quick succession, revealing a long-distance entanglement which was not obvious before. NASA's Solar Dynamics Observatory (SDO) recorded the movie of the double blast:Since it was

October 02, 2011


X1.9 solar flare took place

Sunspot 1302 is back at it again, this time producing an X1.9 Solar Flare at 09:40 UTC. This major event resulted in an R3 level radio blackout as well as producing a 10.7cm Radio Burst (TenFlare). A fast moving type II sweep frequency event is reported also. As this

September 24, 2011

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Long duration X1.4 solar flare took place at new sunspot

Earth-orbiting satellites have detected a long-duration X1.4-class solar fare coming from a new sunspot on the sun's eastern limb. The blast, which peaked at 1100 UT, produced a significant CME, but the cloud is not Earth-directed.

September 22, 2011


STEREO-SOHO detected six coronal mass ejections

On Sept. 19th, the STEREO-SOHO fleet of spacecraft surrounding the sun detected six coronal mass ejections (CMEs). Two of the clouds rapidly dissipated. The remaining four, however, are still intact and billowing through the inner solar system. Click to view a movie of

September 20, 2011

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Geomagnetic storm in progress

As predicted by analysts at the Goddard Space Weather Lab, a coronal mass ejection (CME) hit Earth's magnetic field at ~03:30 UT on Sept 17th. The impact sparked a moderate geomagnetic storm (in progress) and auroras around the Arctic Circle. High-latitude sky watch

September 17, 2011


Incoming coronal mass ejection

As predicted by analysts at the Goddard Space Weather Lab, a coronal mass ejection (CME) hit Earth's magnetic field at ~03:30 UT on Sept 17th. The impact was not strong. Nevertheless, the arrival of the CME could spark geomagnetic activity around the Arctic Circle.

September 17, 2011

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Geomagnetic storm continues

New sunspot AR1295 is emerging over the sun's northeastern limb and crackling with solar flares. The strongest so far, a C9.9-category blast, did something remarkable. Click on the arrow to watch an extreme ultraviolet movie from NASA's Solar Dynamics

September 13, 2011

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Geomagnetic storm subsiding, expecting more CMEs

The first of several CMEs en route to Earth struck our planet's magnetic field on Sept. 9th around 1130UT. The impact sparked a strong (Kp=7) geomagnetic storm, which is now subsiding. Last night Northern Lights were spotted in the United States as far south

September 10, 2011

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Geomagnetic storm in progress

UPDATE: The Geomagnetic Storm has subsided over the past few hours. However, the solar wind remains energized and occasional pulses of activity are expected for another 24 hours. Region 1283, the responsible party back at the Sun, decayed today. The Geomagnetic Storm

September 10, 2011


Earth-directed M5.3 solar flare took place

This morning at 0150 UT, sunspot 1283 produced an M5.3-class solar flare. A movie from NASA's Solar Dynamics Observatory shows the flash of extreme UV radiation. Because of the sunspot's central location on the solar disk, the eruption was Earth-directed and a CME

September 06, 2011


New sunspots forming, Venus-directed CME

Yesterday, the Solar and Heliospheric Observatory witnessed a spectacular explosion on the sun that seemed to pass perilously close to Venus.As the movie shows, the CME passed harmlessly. There was no collision, and it wasn't even close. Although Venus seems to be

August 17, 2011


Largest flare of Solar Cycle 24 occurred today - Non-Earth directed X6.9

This morning at 08:05 UTC, sunspot 1263 produced an X6.9 solar flare, the third X-flare of new Solar Cycle 24 and the most powerful so far. NASA's Solar Dynamics Observatory captured the explosion's extreme ultraviolet flash:The brunt of the ex

August 09, 2011


Another M-class solar flare

A second M-Class flare, this time a M2.5 took place at 03:54 UTC Tuesday morning around Sunspot 1263. This is in addition to the earlier M3.5 flare which we reported yesterday. The first flare produced a small, but fast moving (2010 km/s) Coronal Mass Ejection...

August 09, 2011


One of the strongest geomagnetic storms in years subsiding

Earth's magnetic field is still reverberating from a CME strike on August 5th that sparked one of the strongest geomagnetic storms in years. Registering 8 on the 0 to 9 "K-index" scale of magnetic disturbances, the storm, at its maximum, sparked...

August 06, 2011


Geomagnetic storm still in progress but lingering

A geomagnetic storm is in progress. It began on August 5th around 18:00 UT when a CME struck Earth's magnetic field. At its peak during the hours just after impact, the storm registered 8 on the 0 to 9 "K-index" scale of geomagnetic disturbances,...

August 06, 2011


Major geomagnetic storm in progress!!!

A major geomagnetic storm is in progress following the impact of a CME on August 5th around 1800 UT. Sky watchers at all latitudes should be alert for auroras after nightfall. Tip: the best hours for aurora sightings are usually around local midnight.Analysts at the

August 05, 2011


Strong solar activity - M9.3 solar flare took place, expecting CMEs

Sunspot 1261 is at it again, this time producing a strong M9.3 Solar Flare at 03:57 UTC Thursday morning. It also turns out that yet another Coronal Mass Ejection (CME) was produced and you can see it in the still image below captured by STEREO Ahead.Proton Levels are o

August 04, 2011


M1.4 Earth-directed solar flare took place

Magnetic fields above sunspot 1261 erupted this morning at 0648 UT, producing an M1-class solar flare. The blast also hurled a bright coronal mass ejection toward Earth. This movie from the STEREO-Ahead spacecraft shows the cloud racing away from the sun at almost

August 02, 2011

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Solar tsunami and dark fireworks on the Sun

On June 7, 2011, Earth-orbiting satellites detected a flash of X-rays coming from the western edge of the solar disk. Registering only "M" (for medium) on the Richter scale of solar flares, the blast at first appeared to be a run-of-the-mill eruption- that is, until

July 12, 2011


Behemoth sunspots evolve

The CME was not squarely Earth-directed and is not traveling at great speed, only minor geomagnetic storming is expected when the cloud arrives. A coronal mass ejection (CME) that billowed away from sunspot 1247 on July 9th could hit Earth's magnetic field on...

July 10, 2011


Impact of solstice solar flare is expected on June 24th

A CME propelled toward Earth by the "solstice solar flare" of June 21st may be moving slower than originally thought. Analysts at the GSFC Space Weather Lab have downgraded the cloud's probable speed from 800 km/s to 650 km/s. Impact is now expected on June 24th at

June 22, 2011


Sunspot 1236 harbors energy for M-class solar flares

The magnetic field of sunspot 1236 harbors energy for M-class solar flares. NOAA forecasters estimate a 25% chance of such an eruption during the next 24 hrs.

June 16, 2011


Sundiving comet and coronal mass ejection

A comet dove into the sun on May 11th and seemed to trigger a massive eruption. Watch the movie, then scroll down for further discussion. A comet goes in; a CME comes out. Coincidence? Probably, yes, the sequence was coincidental. The comet disintegrated

May 12, 2011


Spectacular CME, active region approaching Earth

A sunspot located just behind the sun's eastern limb erupted during the waning hours of May 9th, hurling a spectacular coronal mass ejection into space: movie. NASA's Solar Dynamics Observatory photographed hot magnetic loops towering over the edge of the sun in the

May 11, 2011


Solar winds blowing earthward from Sun's new coronal hole

NASA's Solar Dynamics Observatory is monitoring a hole in the sun's atmosphere - a "coronal hole." It is the dark region circled in this extreme ultraviolet image taken during the early hours of April 28th: Coronal holes are places where the sun's magnetic field

April 28, 2011


February solar flare was sparked by five spinning sunspots

The giant solar flare unleashed in February was caused by five rotating sunspots working in concert, the UK's National Astronomy Meeting has heard.Images released from the Solar Dynamics Observatory (SDO) clearly show the sunspots, which are centres of magnetic

April 21, 2011


Filament of magnetism is curling around the sun's southeastern quadrant

Newly-arriving data from NASA's STEREO probes suggest that a coronal mass ejection (CME) might be heading toward Earth. The source of the cloud appears to be sunspot complex 1185-1186, which experienced an episode of magnetic instability during the early hours of April

April 09, 2011