NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, October 22, 2017 22:50:25

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

Asymmetric Partial-Halo CME From 11 Feb 2016 to Cause G1 (Minor) Geomagnetic Storms on 14-15 Feb 2016

SOHO/LASCO C2 coronagraph imagery
Asymmetric Partial-Halo CME From 11 Feb 2016 to Cause G1 (Minor) Geomagnetic Storms on 14-15 Feb 2016
published: Tuesday, February 16, 2016 06:03 UTC
An asymmetric partial-halo CME was observed in coronagraph imagery beginning at 11/2128 UTC and was associated, at least in part, with a long duration C8 flare from Region 12497 at 11/2103 UTC. Initial analysis suggests this CME has an Earth-directed component and is expected to arrive late on 14 Feb/early on 15 Feb, causing periods of G1 (Minor) geomagnetic storms.
 
Region 2497 has grown in size and magnetic complexity over the past 24 hours and produced an M1 flare (R1 (Minor) radio blackout) at 12/1047 UTC. C-class flares are expected with a chance for another R1 (Minor) event over the next few days.