ARLA/CLUSTER: A maior "labareda" Solar registada em 2016

[João Costa > CT1FBF]

Strongest flare of 2016

The Space Weather site reports sunspot complex AR2565-AR2567 erupted
on July 23, twice, producing two strong solar flares in quick
succession

The first at 0211 UT registered M5 on the Richter Scale of Flares.
The second at 0516 UT registered M7.6, making it the strongest flare
of 2016 so far.

Pulses of radiation from the two flares ionized the top of Earth's
atmosphere, causing a blackout of shortwave radio transmissions over
the Pacific side of Earth. People who might have noticed the fading
signals include ham radio operators, mariners and aviators.

The explosions hurled an impressive CME into space. The body of the
cloud will not hit Earth. However, Earth could experience a glancing
blow from shock waves on the outskirts of the cloud. This has prompted
NOAA forecasters to issue a minor geomagnetic storm warning for July
26.

Source: Space Weather
http://spaceweather.com/