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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 22, 2025 03:33:06

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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
G1 Watch (27 and 29 Sep) G2 Watch (28 Sep) Geomagnetic Storm Watches for 27-29 September Wednesday, September 25, 2019 - 19:04
Model data from August 5th New NOAA-USGS model for electrical power grid operators Friday, September 20, 2019 - 20:32
G2 (Moderate) Geomagnetic Storm Conditions Observed Saturday, August 31, 2019 - 13:16
G1-G2 Watches 31 Aug-1 Sep, 2019 G1 Watch 31 Aug & G2 Watch 1 Sep, 2019 UTC-Days Thursday, August 29, 2019 - 20:43
NWS 2019 Fall Safety Campaign The NWS Fall Safety Campaign Is On Thursday, August 29, 2019 - 18:30

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