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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 22, 2025 13:49:10

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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
S
no data
G
no data
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

News Archive

Previous SWPC news items.

News Archive

Originally Posted
G2 (Moderate) Geomagnetic Storm Watch Issued Friday, October 5, 2018 - 21:51
G2 Conditions Observed 11 Sep G2 Storm Conditions Observed 11 September, 2018 Tuesday, September 11, 2018 - 19:47
SWPC News Announcement SWPC Website only to Support HTTPS Protocol Beginning September 17 Monday, September 10, 2018 - 14:34
NWS Fall 2018 Safety Campaign NWS Fall 2018 Safety Campaign is On! Tuesday, September 4, 2018 - 04:17
G2 (Moderate) Geomagnetic Storm Observed Monday, August 27, 2018 - 18:23

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