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Sunday, October 22, 2017 22:35:33

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NOAA Scales mini

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Space Weather Conditions
24-Hour Observed Maximums
R
no data
S
no data
G
no data
Latest Observed
R
no data
S
no data
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
G
no data
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R
no data
S
no data
G
no data
Current Space Weather Conditions
R1 (Minor) Radio Blackout Impacts
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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

Region 12192 Biggest in 2 Solar Cycles (Updated)

Region 12192 Biggest Since 1990
Region 12192 Biggest in 2 Solar Cycles (Updated)
published: Tuesday, October 28, 2014 14:03 UTC

Active Region 12192 is the largest region since November 18, 1990, a full two solar cycles ago.  To see what we might expect, we took a look back at the region from 1990 (Region 6368).  At its largest, region 6368 was about 10% larger than region 12192.  During its entire transit across the Earth facing side of the Sun, region 6368 did not produce any R3 or larger Radio Blackouts (X-class flares).  Already, region 12192 has surpassed that region in term of production of significant solar flares.  The full tally, keeping in mind that region 12192 has about 2 more days before rotating to the far side of the sun, is given in the table below.

 

Comparing two large active regions
  Region 6368 (1990) Region 12192 (2014)*
R3-R5 (X-class) flares 0 6
R1-R2 (M-class) flares 14 23
(C-class) flares 96 62

*Through mid-day October 27.

 

Image courtesy of the NASA SDO HMI team.