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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, October 22, 2017 18:59:47

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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

G2 (Moderate) geomagnetic storm warning/conditions met

G2 Warning/Observed 22 Aug Aurora Forecast
G2 (Moderate) geomagnetic storm warning/conditions met
published: Wednesday, August 23, 2017 06:08 UTC

A G2 (Moderate) geomagnetic storm Warning was issued, valid from 22/0255-0800 UTC (21/2255 - 22/0400 EDT). Shortly thereafter, G2 (Moderate) geomagnetic storm conditions were observed at 22/0259 UTC (21/2259 EDT), due to a sudden enhancement in the solar wind environment. Conditions are not expected to increase any higher, with solar winds continuing to decrease as the day progresses.

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