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National Oceanic and Atmospheric Administration

Friday, April 18, 2025 20:30:10

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NOAA Scales mini

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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
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R
no data
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Current Space Weather Conditions
on NOAA Scales
R1 (Minor) Radio Blackout Impacts
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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

Interplanetary Shock Passage Observed at the ACE Satellite

Interplanetary Shock Passage Observed at the ACE Satellite
published: Sunday, October 25, 2015 15:08 UTC

The anticipated arrival of the 22 Oct coronal mass ejection (CME) arrived at the ACE satellite at 24/1828 UTC (24/1228 MDT). The passage of the CME is likely to result in periods of G1 (Minor) geomagnetic storms for the remainder of 24 Oct through early 25 Oct. Stay tuned for further developments.