NOAA Logo

NWS Logo

Organizations

Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 27, 2024 17:40:26

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) storms likely on 20 Jul with CME

G1 (Minor) storms likely on 20 Jul with CME
published: Saturday, July 22, 2023 21:31 UTC

AR 3363 produced an M5.7 flare, which peaked at 18/0006 UTC. An asymmetric, halo CME moving around 1200 km/s was associated with the flare. The bulk of the ejecta is directed ahead and south of Earth’s orbit, which is consistent with AR 3363’s region location on the WSW limb. Nonetheless, numerous model results show a wide and expansive CME front, which is likely to pass close enough to Earth on 20 July to cause minor (G1) geomagnetic storming. A G1 (Minor) geomagnetic storm watch is now in effect for 20 Jul.