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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, January 21, 2018 08:40:40

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NOAA Scales mini

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Space Weather Conditions
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
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

R2 (Moderate) Radio Blackouts Observed - 02 April 2017

D-region absorption prediction during 02/2033 UTC R2 event
R2 (Moderate) Radio Blackouts Observed - 02 April 2017
published: Tuesday, April 04, 2017 21:20 UTC

Region 2644 produced a pair of R2 (Moderate) radio blackouts at 02/0802 UTC and 02/2033 UTC, respectively, along with multiple R1 (Minor) radio blackouts over the past 24 hours.  Multiple coronal mass ejections (CMEs) associated with the solar flare activity originating from Region 2644 have been observed but are not expected to be earth-directed.