http://www.solarham.net/planetk.htm http://spaceweather.com/archive.php?view=1&day=26&month=06&year=2018
GEOMAGNETIC STORM PREDICTED: NOAA forecasters say there is a 70% chance of G1-class geomagnetic storms on June 27th when a stream of solar wind hits Earth's magnetic field. The gaseous material is flowing from a large, irregular hole in the sun's atmosphere. High latitude sky watchers should be alert for auroras, especially in the southern hemisphere where winter darkness favors visibility
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 5 storm
"" http://earth-chronicles.ru/index/0-27
Aurora Corona Taken by Tom Arne Moldenaes on September 5, 2017 @ Norway,Tromso
THE FLARES CONTINUE: Sunspot AR2673 has remained active on Sept. 7th, producing three M-class flares (M2.4, M1.4, M7.3) and another X-flare (X1.3). Unlike yesterday's monster X9-flare, however, none of today's explosions have hurled a significant CME toward Earth. Ham radio operators may be noticing the effects of these most recent flares in the form of minor shortwave blackouts and strange propagation effects. Free: Solar Flare Alerts
Above: The extreme ultraviolet flash from an M7-class flare on Sept. 7th. Credit: NASA/SDO
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. 2.4, 10.15 7.3.
http://spaceweather.com/
EARTH VS. SOLAR FLARE: Amateur astronomer Philippe Tosi photographed the sun on Sept. 6th, and his timing was perfect. He caught sunspot AR2673 in mid-explosion, producing the most powerful solar flare in more than a decade.
His image of the X9-category blast, with Earth inserted for comparison, highlights the advantages of being 93 million miles away from the sun. The explosion was big enough to swallow our entire planet with room to spare. More images of this outsized explosion may be found in the Space Weather Photo Gallery.
AN EXPLOSION ON THE SUN: Today, May 30th, a long dark filament of magnetism is lifting off the surface of the sun. NASA's Solar Dynamics Observatory is recording the action:
As the filament lashes through the sun's atmosphere, it could propel a coronal mass ejection (CME) into space--much like the one that sparked a strong geomagnetic storm on May 28th. This possibility is still hypothetical, however. Stay tuned for updates in the hours ahead as we monitor coronagraph images for evidence of a CME.
Auroras Taken by Nick Stasilli on May 27, 2017 @ Cold Brook, NY
The Sun Always Moves ! Around AR2645 Taken by Sylvain Weiller on April 2, 2017 @ Jerusalem, Israel
http://spaceweather.com/
CHANCE OF FLARES: NOAA forecasters estimate a 60% chance of M-class solar flares and a 20% chance of X-flares on April 3rd as sunspot AR2644 continues to crackle with magnetic explosions. Extreme UV radiation from such flares can cause shortwave radio blackouts and other disturbances to the normal transmission of radio signals around the globe.
]http://www.tesis.lebedev.ru/sun_flares.html
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M1.2 2644 03:56:00 04:05:00 04:12:00
M5.8 0 17:19:00 17:29:00 17:34:00
THE SUN WAKES UP: Suddenly, solar flare activity is high. With little warning, sunspot AR2644 exploded on April 1st, producing an M4.4-class flare. That was the strongest solar flare of the year--for less than a day. The sunspot topped itself on April 2nd with a pair of M5-class explosions. This picture from NASA's Solar Dynamics Observatory shows the instigating flare on April 1st:
Flashes of extreme ultraviolet radiation, like the one shown above, have been ionizing Earth's upper atmosphere and altering the normal propagation of radio waves around our planet. There have been at least three significant shortwave radio blackouts affecting, especially, the Pacific and Indian oceans. (Blackout maps: #1, #2, #3) People who might have noticed these blackouts include ham radio operators and mariners using low-frequency rigs for communication at frequencies below 10 MHz.
At least two of the explosions hurled coronal mass ejections (CMEs) into space. So far there is no evidence that the clouds will hit Earth. This conclusion is preliminary, however, so stay tuned for updates.
http://spaceweather.com/
THE SUN WAKES UP: Suddenly, solar flare activity is high. With little warning, sunspot AR2644 started exploding yesterday, producing an M4.4-class flare on April 1st followed by an even stronger M5-class flare on April 2nd. Here is the ultraviolet flash from the first explosion, recorded by NASA's Solar Dynamics Observatory.
UV radiation from the flare caused a brief shortwave radio blackout on the Pacific side of Earth: map.
People who might have noticed the blackout include ham radio operators and mariners using low-frequency rigs for communication at frequencies below 10 MHz.
The explosion also hurled a coronal mass ejection (CME) into space: image.
The cloud is not heading directly for Earth, but a glancing blow is possible in the days ahead. NOAA analysts are evaluating this possibility now.
NOTE: The source of this flare, AR2644, is not the big sunspot discussed below. While forecasters focused their attention on the huge sunspot facing Earth, a lesser sunspot near the sun's western limb exploded instead. Tricky sun.
BIG SUNSPOT FACES EARTH: In a year of few sunspots, AR2645 is remarkable. The young spot has quickly grown from an almost invisible speck into a sprawling behemoth more than 120,000 km wide, with multiple dark cores larger than Earth. And, it is directly facing our planet:
AR2645 has a 'beta-gamma' magnetic field that harbors energy for M-class (moderately strong) solar flares. Any such explosions while the sunspot faces Earth could ionize the top of our planet's atmosphere and alter the normal propagation of radio transmissions around the globe. Shortwave radio blackouts are possible if the sunspot erupts.
Despite its potential, AR2645 has so far been quiet, emitting only a crackling of minor C-flares with minimum effect on Earth. NOAA forecasters estimate a 10% chance of more potent M-flares in the next 24 hours.
Coronal Holes: 01 Apr 17
Solar wind flowing this minor coronal hole should reach Earth on April 2-3, adding its contribution to an already enhanced solar wind environment around Earth.
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31 2017 . (Aurora Murmansk Sony A7)
Taken by on March 31, 2017 @ Murmansk
