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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 26, 2025 04:04:35

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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

Update - Downgrade for CME Peak Activity Forecast

10 Dec, 2020, CME Shock Arrival
Update - Downgrade for CME Peak Activity Forecast
published: Monday, December 14, 2020 16:47 UTC

The 7 December, 2020, CME arrived in line with the forecast, as an interplanetary shock was detected at DSCOVR at 10/0132 UTC (09 Dec, 8:32pm ET). The magnetic strength of this storm was less than the peak potential that could have initiated a G3 (Strong) geomagnetic storm as it arrived at Earth. Therefore, SWPC forecasters are downgrading to G1 (Minor) storm Watches for the remainder of today (10 Dec) and tomorrow (11 Dec).