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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 20, 2024 15:58:01

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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 Postedsort descending
24 June ACE plot G3 downgraded to G1 Wednesday, June 24, 2015 - 22:08
Yet another R2 flare from NOAA Region 12371 Thursday, June 25, 2015 - 13:46
The Sun produces yet another Earth-directed event Thursday, June 25, 2015 - 18:28
CME passage depicted in shaded area Anticipated CME Passes Quietly By The Earth Sunday, June 28, 2015 - 14:50
A coronal hole is now in a geoeffective position and G1-Minor geomagnetic storms commenced at 1935 UTC (3:35pm ET) on this 4th of July G1-Minor Geomagnetic Storms In Progress Saturday, July 4, 2015 - 20:20

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