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February 2012 News
JANUARY 2012 News
01/22 - CME IMPACT: Arriving a little later than expected, a coronal mass ejection (CME) hit Earth's magnetic field at 0617 UT on Jan. 22nd. According to analysts at the Goddard Space Weather Lab, the impact strongly compressed Earth's magnetic field and briefly exposed satellites in geosynchronous orbit to solar wind plasma. Shifting lines of magnetic force induced strong ground currents in Norway and sparked bright Northern Lights over Canada and Alaska. Skies above the Yukon turned vivid green as seen at Spaceweather.com. "It was very cloudy at Lake Laberge north of Whitehorse, but we just happened to get 10 minutes of clear sky not long after the CME hit," reports Phil Hart from the Yukon. "A green corona appeared directly overhead." Credit: www.spaceweather.com
01/19 - EARTH-DIRECTED SOLAR FLARE: Active sunspot 1401 erupted today, Jan. 19th, between 15:15 and 16:30 UT. The long-duration blast produced an M3-class solar flare and a CME that appears to be heading toward Earth. NASA's twin STEREO spacecraft recorded an impressive CME emerging from the blast site that can be viewed on Credit Website. Analysts at the Goddard Space Weather Lab confirm that the CME is heading for Earth, and they say strong geomagnetic storms are possible (although not guaranteed) when the cloud arrives this weekend. Their animated forecast track predicts an impact on Jan. 21st at 22:30 UT (+/- 7 hrs). Credit: Spaceweather.com
01/12 - FARSIDE ERUPTION: Today, Jan. 12th, between 10:00 and 1300 UT, NASA's STEREO-Behind spacecraft observed a significant eruption on the farside of the sun. Although the blast was eclipsed by the edge of the solar disk, it nevertheless produced a long-duration X-ray flare (C3-class) detectable from Earth. A movie from NASA's Solar Dynamics Observatory shows some of the debris flying over the NE limb and can be found at www.spaceweather.com. The blast site is not far behind the eastern limb, and it is only ~two days away from rotating onto the Earthside of the sun. By this weekend, we'll get a direct look at the active region. Credit: Spaceweather.com
01/05 - FARSIDE BLAST: A magnetic active region behind the sun's eastern limb erupted during the late hours of Jan. 6th. SOHO recorded the flying debris. In a few days the blast site will rotate onto the Earthside of the sun for closer inspection. Stay tuned. Credit: Spaceweather.com
01/05 - INCOMING CME? A magnetic filament in the sun's northern hemisphere erupted on Jan. 5th and hurled a CME in the general direction of Earth. At first it appeared that the cloud would sail north of Earth and completely miss our planet. Subsequent work by analysts at the Goddard Space Weather Lab suggests a different outcome: the CME might deliver a glancing blow to Earth's magnetic field on Jan. 7th. View an animated forecast track at www.spaceweather.com. NOAA forecasters are estimating a 20% chance of polar geomagnetic storms on Jan 7-8 when the CME is expected to arrive. High latitude sky watchers should be alert for auroras. Credit: Spaceweather.com
01/05 - Sunspots 1390 and 1392 are crackling with low-level C-class solar flares. Credit: SDO/HMI
2011 ARCHIVES
12/31 - SUDDEN IONOSPHERIC DISTURBANCE: Today around 1320 UT, a wave of ionization swept through the high atmosphere over Europe after sunspot AR1389 unleashed another M2-class solar flare. "There was a very clear sudden ionospheric disturbance on my VLF radio instruments," reports Rob Stammes, who sends data from the Polar Light Center in Lofoten, Norway that can be found on today's news on www.spaceweather.com. "The sun is below the horizon where we are located north of the Arctic Circle," says Stammes. "This event shows we still have some contact with the sun." NOAA forecasters estimate a 40% chance of more M-flares during the next 24 hours. There is also a 5% chance of X-flares. - Credit: Spaceweather.com
12/29 - SOLAR FLARE: Emerging over the sun's southeastern limb, sunspot AR1389 unleashed an M2-class solar flare at 1350 UT on Dec. 29th. The blast shows that the newly-visible sunspot is capable of significant eruptions. AR1389 is not yet facing Earth, but it is turning in our direction. Credit: www.spaceweather.com
12/26 - CMEs TARGET EARTH, MARS: The odds of a geomagnetic storm on Dec. 28th are improving with the launch of two CMEs toward Earth in less than 24 hours. NASA's STEREO-B spacecraft photographed one on Dec. 26th found at www.spaceweather.com According to a forecast track prepared by analysts at the Goddard Space Weather Lab, the cloud should squarely strike Earth's magnetic field on Dec. 28th at 20:22 UT (+/- 7 hours). Another CME could deliver a glancing blow a few hours earlier on the same date. The double impact is expected to spark mild-to-moderate geomagnetic storms at high latitudes. - Credit: Spaceweather.com
12/26 - BEAUTIFUL BLAST: After three years of deep quiet, the sun woke up in 2011. Sunspots and solar flares became commonplace again as long-awaited Solar Cycle 24 got underway. One of the most beautiful eruptions of the young solar cycle occured just this past weekend with a time lapse video found at www.spaceweather.com. This explosion was not Earth-directed. Next time, however, could be different. The source of the blast, sunspot 1386, is turning toward Earth, increasing the chances of a geoeffective flare in the days ahead. Additionally, New sunspot 1387 is crackling with M-class flares. Credit: SDO/HMI and www.spaceweather.com
12/24 - CHRISTMAS EVE ERUPTION: A filament of magnetism connected to sunspot AR1386 erupted during the early hours of Dec. 24th. Extreme UV-wavelength cameras onboard the Solar Dynamics Observatory recorded the picturesque blast that can be viewed at www.spaceweather.com. The C5-class eruption hurled a billion-ton coronal mass ejection (CME) into space, but not toward Earth. With the cloud sailing wide-left of our planet, Christmas geomagnetic storms are unlikely. Nevertheless, this active region merits watching as it turns toward Earth in the days ahead, possibly positioning itself for the first storms of 2012. - Credit: Spaceweather.com
December 2012
12/18 - Another important Federal Commission (The US Nuclear Regulatory Commission) has just issued a
November 2012
11/16 - HUMONGOUS ERUPTION: A truly gigantic explosion happened on the sun yesterday. On Nov. 16th, magnetic fields snaking halfway across the sun's southern hemisphere erupted in tandem,
producing a prominence so big, it doesn't fit inside this image from NASA's Solar Dynamics Observatory (SDO). The blast hurled a CME into space, but the cloud does not appear to be heading for Earth.
A movie of the event, prepared by Steele Hill of the Goddard Space Flight Center, shows magnetic fields in concerted motion across an expanse of solar "terrain" more than 700,000 km wide. Observations by SDO have shown that such wide-ranging eruptions are not uncommon on the sun--the great Global Eruption of August 2010 being the iconic example. Credit: www.spaceweather.com
October 2012
10/23 - X-FLARE: New sunspot AR1598 has erupted again. On Oct. 23rd at 0322 UT, Earth orbiting satellites detected a strong X1-class solar flare. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash which can be observed today at www.spaceweather.com. Radiation from the flare created waves of ionization in the upper atmosphere over Asia and Australia (the daylit side of Earth) and possibly HF radio blackouts at high latitudes. The blast did not, however, produce a significant coronal mass ejection (CME). No auroras are expected to result from this event. This is the 4th significant flare from AR1598 since it emerged over the southeastern limb only three days ago. This means more flares are probably in the offing, and they will become increasingly Earth-directed as the sunspot turns toward our planet in the days ahead. Stay tuned for updates. Credit: www.spaceweather.com
August/September 2012