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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, November 23, 2017 18:24:46

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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 Blackout Observed 17 April 8:29 pm EDT

R2 Radio Blackout and 30MhZ D-Region Absorption Graphic
R2-Moderate Radio Blackout Observed 17 April 8:29 pm EDT
published: Wednesday, April 20, 2016 19:03 UTC

R2 (Moderate) radio blackouts were observed at 18/0029 UTC (April 17, 2016 at 8:29 pm EDT) due to an impulsive M6 flare from NOAA Region 2529. A coronal mass ejection occurred in relation to this event, however forecaster analysis suggests an Earth-directed component is unlikely.