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Solar Flare Caused Short Wave Radio Blackout in Asia & Australia, More Expected
- Thread starter Emily
- Start date
sharon sanders
Editor-in-Chief & President
bump this
Emily
Editor, Senior Moderator
https://spaceweather.com/archive.php?view=1&day=20&month=04&year=2022
SOLAR ACTIVITY IS INTENSIFYING: In the last 24 hours alone, the sun has produced more than 19 solar flares. The tally includes five M-class explosions and a powerful X2.2-class flare, described below. The fusillade is likely to continue as colossal sunspot complex AR2993-94 turns toward Earth in the days ahead. Solar flare alerts: SMS Text
X-CLASS SOLAR FLARE: Earth-orbiting satellites have just detected an X2.2-class solar flare (April 20th @ 0357 UT). Remarkably, it came from a farside sunspot. The source is AR2992, which yesterday rotated over the southwestern limb of the sun. NASA's Solar Dynamics Observatory recorded the blast:
Because the sunspot was eclipsed by the edge of the sun, the actual flare was certainly stronger than its nominal rating of X2.2.
The US Air Force is reporting a Type II solar radio burst. This suggests that a CME will emerge from the blast site. Type II radio bursts are caused by shock waves in the leading edges of CMEs, and this could be a big one.
Radiation from the flare caused a shortwave radio blackout over southeast Asia: blackout map. Mariners and ham radio operators in the area may have noticed loss of radio contact at frequencies below 30 MHz for as much as an hour.
Stay tuned for updates.
SOLAR ACTIVITY IS INTENSIFYING: In the last 24 hours alone, the sun has produced more than 19 solar flares. The tally includes five M-class explosions and a powerful X2.2-class flare, described below. The fusillade is likely to continue as colossal sunspot complex AR2993-94 turns toward Earth in the days ahead. Solar flare alerts: SMS Text
X-CLASS SOLAR FLARE: Earth-orbiting satellites have just detected an X2.2-class solar flare (April 20th @ 0357 UT). Remarkably, it came from a farside sunspot. The source is AR2992, which yesterday rotated over the southwestern limb of the sun. NASA's Solar Dynamics Observatory recorded the blast:
Because the sunspot was eclipsed by the edge of the sun, the actual flare was certainly stronger than its nominal rating of X2.2.
The US Air Force is reporting a Type II solar radio burst. This suggests that a CME will emerge from the blast site. Type II radio bursts are caused by shock waves in the leading edges of CMEs, and this could be a big one.
Radiation from the flare caused a shortwave radio blackout over southeast Asia: blackout map. Mariners and ham radio operators in the area may have noticed loss of radio contact at frequencies below 30 MHz for as much as an hour.
Stay tuned for updates.
sharon sanders
Editor-in-Chief & President
bump this
Emily
Editor, Senior Moderator
(I added the black bolding. -E)
https://spaceweather.com/archive.php?view=1&day=21&month=04&year=2022
...
STRONG EARTH-DIRECTED SOLAR FLARE: If you round up, it was an X-flare. On April 21st at 0157 UT, Earth-orbiting satellites detected a strong M9.6-class solar flare. The source was sunspot complex AR2993-94, which is almost directly facing Earth.
Radiation from the flare caused a shortwave radio blackout over southeast Asia and Australia: blackout map. Remarkably, this is the second day in a row the same region of Earth has experienced a radio blackout. It happened yesterday, too, in response to an even stronger X2.2 flare.
Shortly after the flare, the US Air Force reported a Type II solar radio burst--a natural form of radio noise produced by shock waves in the leading edge of a CME. This means we can expect a CME to emerge from the blast site. Stay tuned for updates.
https://spaceweather.com/archive.php?view=1&day=21&month=04&year=2022
...
STRONG EARTH-DIRECTED SOLAR FLARE: If you round up, it was an X-flare. On April 21st at 0157 UT, Earth-orbiting satellites detected a strong M9.6-class solar flare. The source was sunspot complex AR2993-94, which is almost directly facing Earth.
Radiation from the flare caused a shortwave radio blackout over southeast Asia and Australia: blackout map. Remarkably, this is the second day in a row the same region of Earth has experienced a radio blackout. It happened yesterday, too, in response to an even stronger X2.2 flare.
Shortly after the flare, the US Air Force reported a Type II solar radio burst--a natural form of radio noise produced by shock waves in the leading edge of a CME. This means we can expect a CME to emerge from the blast site. Stay tuned for updates.