NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, October 22, 2017 19:03:27

Main menu

NOAA Scales mini

minimize icon
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
maximize icon
R
no data
S
no data
G
no data
Current Space Weather Conditions
R1 (Minor) Radio Blackout Impacts
close
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

Anticipated Return of Active Region(s)

Picture of sunspots rotating onto the visible disk of the Sun
Anticipated Return of Active Region(s)
published: Sunday, October 19, 2014 13:36 UTC

The active region (or complex of regions) believed responsible for a handful of M-class solar flares (also known as R1 -Minor Radio Blackouts), as well a few far-side (non-Earth directed) coronal mass ejections (CMEs) over the past few days, is now rotating into view on the solar disk (from Earth's perspective).

Last rotation, about 27 days ago, Active Regions 2171, 2172, and 2173 were in the similar location and produced some minor activity. Over the next few days, the region(s) will move more into position allowing better determination of whether there is risk for more significant activity, or not.  It will take approximately 13.5 days for these spots to transit across the solar disk. Stay tuned here for more details.