SolarHam.com - Older News Archive (April 2014)|
Added 04/18/2014 @ 12:15 UTC
Large Sunspots, Mostly Quiet (So Far)
A number of large Earth facing regions, including sunspots 2034, 2035 and 2036 continue to transit the visible disk today, but with the exception of a number of C-Class solar flares and one low level M-Flare event, have been mostly quiet so far. There will remain an ongoing threat for an isolated M-Class event as we head into the weekend. Each passing day will carry the active regions out of a geoeffective Earth facing position. Keep watching for the latest.
UPDATE: The quiet is over. An M7.3 solar flare was observed around region 2036. more to follow.
Added 04/13/2014 @ 13:45 UTC
An enhanced period of geomagnetic activity Saturday night resulting from a prolonged period of southward Bz was enough to generate some nice aurora displays at high latitudes. Theresa Tanner sends us this photo that she captured last night around 11:30pm local time from just east of Red Deer, Alberta, Canada. Thanks for sharing!
Another image by Chris Ratzlaff in Alberta.
Updated 04/12/2014 @ 15:40 UTC
Geomagnetic Storm Observed
The Bz component of the interplanetary magnetic field (IMF) tipped south for a long duration on Friday evening and generated a minor G1 level geomagnetic storm (KP=5) at high latitudes. The increase in geomagnetic activity helped to trigger nice aurora displays at high latitudes. Conditions have since returned to more quieter levels.
Added 04/10/2014 @ 02:50 UTC
Around the Corner
One or more active regions, likely the return of old region 2010 and company, are about to begin their journey back onto the visible solar disk. The solar X-Rays are indicating C-Class activity while still behind the east limb. More updates in the days ahead.
Added 04/06/2014 @ 02:25 UTC
Weak CME Impact
Good evening. Below is a nice aurora image sent to us by Joni Alavesa who captured this particular shot Saturday night from Raattama, Lapland, Finland. A weak CME impact did not generate a geomagnetic storm, however when you are located near the Arctic Circle, aurora displays are very common with only the slightest gust of solar wind. Thanks Joni for sharing!
Added 04/05/2014 @ 12:45 UTC
Monster Prominence Eruption
A monster sized prominence erupted Friday night off the southeast limb and flung a bright coronal mass ejection (CME) into space. The plasma cloud appears to be directed away from our planet. The planet Earth is inserted into the image to give you an idea of just how large the eruption was. Imagery by SDO/LASCO C2.
Updated 04/02/2014 @ 20:45 UTC
M6.5 Solar Flare Observed
A rather noisy and long duration solar flare event measuring M6.5 was observed around sunspot 2027 at 14:05 UTC. The flare was associated with an asymmetrical coronal mass ejection that became visible soon after in STEREO Ahead imagery. Because the source region is located close to the northeast limb, the blast was directed mostly away from our planet. Only a minor glancing blow impact will be possible by April 4th. More information to follow. Click HERE for a video.
View full event log
SUMMARY: 10cm Radio Burst
Begin Time: 2014 Apr 02 1341 UTC
Maximum Time: 2014 Apr 02 1357 UTC
End Time: 2014 Apr 02 1407 UTC
Duration: 26 minutes
Peak Flux: 3700 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
ALERT: Type II Radio Emission
Begin Time: 2014 Apr 02 1323 UTC
Estimated Velocity: 903 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.