NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, April 21, 2025 15:55:35

Main menu

NOAA Scales mini

minimize icon
Space Weather Conditions
on NOAA Scales
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
on NOAA Scales
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) Geomagnetic Storms Observed - 11 June 2017

G1 (Minor) Geomagnetic Storms Observed - 11 June 2017
published: Monday, June 12, 2017 15:05 UTC

G1 (Minor) geomagnetic storm conditions were observed at 11/1759 UTC due to an observed SSBC and the arrival of a recurrent, positive-polarity CH HSS.