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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, April 04, 2025 00:56:11

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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
No more 'Dark side of the Moon' Wednesday, August 5, 2015 - 19:13
Negative Polarity Coronal Hole High Speed Streams G1 (Minor) Geomagnetic Storms Likely on 31 July and 01 August Thursday, July 30, 2015 - 22:30
Power Interuption at SWPC Thursday, July 30, 2015 - 01:45
21st Century Blue Marble Tuesday, July 21, 2015 - 16:56
Ovation Aurora Forecast Model G1 Minor geomagnetic activity Saturday, July 11, 2015 - 07:02

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