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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, July 22, 2017 00:44:34

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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

R1 (Minor) Radio Blackout Observed - 14 July 2017

R1 (Minor) Radio Blackout Observed - 14 July 2017
published: Saturday, July 15, 2017 02:45 UTC

Region 2665 (S07W30) produced a long-duration M2 flare (R1-Minor Radio Blackout) with a maximum time observed at 14/0209 UTC. There is a slight chance for additional M-class flare activity (R1-R2 / Minor-Moderate) radio blackouts over the next three days (14-16 July).