NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, January 20, 2018 04:49:55

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

G1 (Minor) Storm Warning in Effect from 21/0432 to 21/1800 UTC

G1 (Minor) Storm Warning in Effect from 21/0432 to 21/1800 UTC
published: Tuesday, November 21, 2017 23:19 UTC

A G1 (Minor) geomagnetic storm warning is in effect from 21/0432 to 21/1800 UTC due to persistent positive polarity CH HSS effects. G1 (Minor) alerts were issued at 21/0530 and 21/0825 UTC. Stay tuned here for updates.