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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Sunday, April 22, 2018 19:57:55

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
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
on NOAA Scales
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

News Archive

Previous SWPC news items.

News Archive

Originally Posted
Update: G2 (Moderate) Geomagnetic Storm Levels Observed Friday, April 20, 2018 - 07:34
G1 (Minor) Geomagnetic Storm Warning Valid 20/0510-21/0300 UTC Sunday, April 8, 2018 - 05:05
SWPC Dissemination Service Modernization Friday, April 6, 2018 - 17:53
SWPC Dissemination Service Modernization Friday, April 6, 2018 - 15:34
SWPC Web Page Downtime Required Wednesday, March 28, 2018 - 13:58

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