Tuesday, October 29, 2013

Major X1.0 solar flare erupts with bright CME - glancing blow expected on October 31

Via The Watchers, 28 October 2013

Increased solar activity will continue this week. Beta-Gamma-Delta classified Active Region 1875 erupted with major solar flare reaching X1.0 at 02:03 UTC on Monday, October 28, 2013. A bright Coronal Mass Ejection (CME) is visible emerging from the Sun.

This region is located on the west limb and the majority of material is heading away from Earth. However, it appears that the eastern flank of the expanding cloud may still be Earth directed and a glancing blow impact to our geomagnetic field will be possible within 72 hours.

As visible on the image below, a smaller solar flare was already in progress around sunspot 1882 at the time of this eruption.

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 28 0141 UTC
Maximum Time: 2013 Oct 28 0203 UTC
End Time: 2013 Oct 28 0212 UTC
X-ray Class: X1.0
Optical Class: 2n
Location: N04W66
NOAA Scale: R3 - Strong

Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

Background image credit: SDO AIA 304 at the time of X1.0 eruption on October 28, 2013. Flare position image credit: SDO EVE/SAM

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