Articles tagged "cme" - page 5

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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

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Solar wind blasts Mercury

At a NASA teleconference yesterday, researchers working with data from the Messenger spacecraft offered new evidence that gusts of solar wind are penetrating Mercury's magnetic field and eroding material off the planet's surface. The spacecraft has actually flown

September 30, 2011

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Aurora reverberations

A CME hit Earth's magnetic field on Sept. 26th, sparking one of the strongest magnetic storms in years. At the peak of the Kp=8 disturbance, auroras were sighted around both poles and more than half a dozen US states. Magnetic reverberations continued for more than 48

September 29, 2011

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Minor geomagnetic storm in progress

A minor geomagnetic storm erupted earlier today, Sept. 28th, causing beautiful Wednesday-morning auroras in Canada and some northern-tier US states. These are, essentially, aftershocks of the severe storm on Sept. 26th. More reverberations are possible tonight.

September 28, 2011

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Strong solar activity causing severe geomagnetic storm

High-latitude sky watchers should be alert for auroras. A strong (Kp=7) geomagnetic storm is in progress. Earth's magnetic field has been strongly disturbed since approximately 1300 UT on Sept. 26th when a CME hit our planet. The impact strongly compressed the

September 26, 2011

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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

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Earth-directed coronal mass ejection expected

A coronal mass ejection (CME) is heading toward Earth and it could deliver a glancing blow to our planet's magnetic field on Sept. 22th around 23:00 UT. There are no large coronal holes on the Earth-facing side of the sun. High-latitude sky watchers should be alert for

September 21, 2011

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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

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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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Incoming CME and new sunspots

Yesterday, Sept. 14th, an eruption near sunspot 1289 hurled a CME in the general direction of Earth. Analysts at the Goddard Space Weather Lab expect the cloud to deliver a glancing blow to our planet's magnetic field on Sept 17th around 04:30 UT. There are no large

September 15, 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

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Geomagnetic storm in progress!

A polar geomagnetic storm (Kp=5) is in progress following the impact of a CME around 1100 UT on Sept. 9th. This could be the first of several hits from a series of CMEs expected to reach Earth during the weekend. High-latitude sky watchers should be alert for auroras

September 09, 2011

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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

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M3 solar flare took place on Sun's western limb

This morning at 1145 UT, an active region on the sun's western limb unleashed an M3-class solar flare. NASA's Solar Dynamics Observatory recorded the flash of extreme UV radiation:Although the blast site was not directly facing Earth, radiation from the explosion

September 04, 2011

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Sunspots 1271 and 1272 are growing again

After a weekend of quiet decay, sunspots 1271 and 1272 are growing again. Click on the image to view 24 hours of development:The increase in size has not yet translated into a significant increase in flares. Solar activity remains low, although this could change if

August 22, 2011

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Farside CME activity continues

Solar Activity continues at fairly low levels with only C-Class activity taking place in the past 24 hours. Sunspot 1271 is the largest visible area and it may pose a small threat for an M-Class event.Farside CME activity continues and you can view all of the action

August 19, 2011

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Spacecraft sees solar storm engulf Earth

For the first time, a spacecraft far from Earth has turned and watched a solar storm engulf our planet. The movie, released today during a NASA press conference, has galvanized solar physicists, who say it could lead to important advances in space weather forecasting.

August 19, 2011

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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

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Active sunspot 1263 has left the Earthside of the sun

Active sunspot 1263, which just two days ago produced the most powerful solar flare of the new Solar Cycle (an X7), has left the Earthside of the sun. It is now beginning a two week transit across the solar farside. We can still see signs of its ongoing activity,

August 12, 2011

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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

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X 6.9 solar flare took place - partialy Earth-directed!!!

The largest solar flare of Cycle 24 just took place at 08:05 UTC and it registered a whopping X6.9. The source was Sunspot 1263 which is nearing the Western Limb. Because of its location, any large explosions may not be fully earth directed. When watching new video

August 09, 2011

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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

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M3.5 solar flare took place around Sunspot 1263

At 18:10 UTC Monday, a short duration M3.5 Solar Flare took place around Sunspot 1263. Because of its location, any explosions at this point may not be earth directed.Just when solar activity was slowing down, an M3.5 Solar Flare took place around Sunspot 1263

August 08, 2011

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Behemoth sunspot 1263 has almost doubled in size

Behemoth sunspot 1263 has almost doubled in size this weekend. A 28-hour movie from NASA's Solar Dynamics Observatory shows the spot developing a tail that has added some 50,000 km of length to the active region.This development may increase the likelihood of a stro

August 08, 2011

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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

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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

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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

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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

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A moderate solar flare reaching M6.0 took place around Sunspot 1261

A Moderate Solar Flare reaching M6.0 took place around Sunspot 1261 at 13:47 UTC Wednesday and appears to be long in duration. A brief R2 Radio Blackout resulted. A bright Coronal Mass Ejection (CME) is associated and can be seen in the image below. It is most likely

August 03, 2011

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Sunspots 1261 and 1263 produce pair of M-Class flares - Expecting geomagnetic storm

An M1.1 Solar Flare took place around Sunspot 1261 at 03:37 UTC Wednesday morning followed an hour later by a M1.7 flare around Sunspot 1263 at 04:32 UTC. Stay tuned to this website for any further developments.A long duration M1.4 Solar Flare took place around

August 03, 2011

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Massive double Sunspot 1263 - wider than the Earth - harbors energy for powerful X-class solar flares!

Double sunspot 1263 is a whopper. Its two dark cores are each wider than Earth, and the entire region stretches more than 65,000 km from end to end. The clarity of  image is impressive. Note the granulation of the stellar surface surrounding the main dark cores.

August 02, 2011

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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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Geomagnetic storm in progress!

Geomagnetic K-index of 5 alert is issued by Space Weather Prediction Center. Kp-indices of 5 or greater indicate storm-level geomagnetic activity. Geomagnetic storms have been associated with satellite surface charging and increased atmospheric drag.Speed of solar

July 30, 2011

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Kp5 geomagnetic storm in progress!!!

The solar wind is at elevated levels and this may stir up minor activity at very high latitudes.Solar windspeed: 622.5 km/secdensity: 3.8 protons/cm3Planetary K-indexNow: Kp= 5 storm24-hr max: Kp= 5 stormInterplanetary Mag.

July 19, 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

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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