Giant Sunspot “AR2781” Is Crackling With Solar Flares

Giant Sunspot “AR2781” Is Crackling With Solar Flares By Cap Allon for Natural Blaze

Giant sunspot AR2781 is crackling with solar flares, writes Dr Tony Phillips over at

The strongest so far, a C7-class explosion at 00:22 UT on Nov. 5, lit up the sunspot’s magnetic canopy for nearly an hour. NASA’s Solar Dynamics Observatory captured the extreme ultraviolet (UV) flash:

X-rays and UV radiation from the flare ionized the top of Earth’s atmosphere, causing a brief low-frequency radio blackout over the Pacific Ocean and Australia (blackout map). Mariners and ham radio operators in the region might have noticed signals fading, especially at frequencies below 10 MHz.

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AR2781 has nearly doubled in size since yesterday.

With a primary dark core more than 3 times wider than Earth, the sunspot is an easy target for amateur telescopes.

Shahrin Ahmad took this picture in Kuala Lumpur, Malaysia:

“Here is this morning’s view of THAT sunspot AR2781,” says Ahmad.

“Even though it is not yet directly facing Earth, we can feel the size is gigantic!”

A grid-down scenario is coming to a town near you–it’s just a matter of when, not if. The likely time frame is during the ramp up of Solar Cycle 25, when the Sun is most capable of hurling a civilization-resetting solar flare/coronal mass ejection in our direction. The highest level of threat falls between now and around 2025 (possibly later), when solar activity is increasing while Earth’s magnetosphere is waning–the latter is due to two independently occurring phenomenons, a GSM and a Magnetic Pole Shift 

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