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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 20, 2024 13:19:34

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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

sort ascending Originally Posted
G1 Watch 15-16 Mar, 2023 G1 Watch in Effect for 15-16 March UTC days Monday, March 13, 2023 - 21:05
G1 Watch 1 & 2 June, 2018 G1 Watch for June 1 and 2 UTC-days Tuesday, May 29, 2018 - 19:13
G1 Watch 9 July 2017 G1 Watch for 9 July UTC-Day Thursday, July 6, 2017 - 20:55
G1 Watch 5-6 Aug, 2019 G1 Watch for 5 & 6 August, 2019 Monday, August 5, 2019 - 14:38
G1 Watch for 4-5 Jan due to CH HSS G1 WATCH for 4 and 5 January, 2017 Monday, January 2, 2017 - 19:59

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