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National Oceanic and Atmospheric Administration

Sunday, April 22, 2018 05:02:18

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NOAA Scales mini

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Space Weather Conditions
24-Hour Observed Maximums
R
no data
S
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G
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Latest Observed
R
no data
S
no data
G
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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
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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

G1 (Minor) Geomagnetic Storm Watch in effect for 22-24 November

G1 Watch for 22-24 November
G1 (Minor) Geomagnetic Storm Watch in effect for 22-24 November
published: Friday, November 25, 2016 06:34 UTC

A G1 (Minor) geomagnetic storm watch is now in effect for the 22-24 November (UTC Days). Earth will be under the influence of a pair of Coronal Hole High Speed Streams (CH HSS) beginning later on 22 November, 2016. These separate features comprised one large, north-polar connected CH HSS last rotation and it was responsible for numerous G1 (Minor) and G2 (Moderate) storm periods; including an isolated G3 (Strong) interval on its previous transit across the disk. Current imagery suggests a noticeable weakening of the coronal hole structure from the last rotation. Continue to check the SWPC website for updated information.