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National Oceanic and Atmospheric Administration

Friday, April 19, 2024 14:44:16

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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

M4 Flare (R1-Minor) Event on 20 February, 2023

R1 Event 20 Feb, 2023
M4 Flare (R1-Minor) Event on 20 February, 2023
published: Wednesday, March 01, 2023 03:50 UTC

An M4.4 flare (R1-Minor HF Radio Blackout) occurred on 20 February, 2023, at 9:58 am EST (1458 UTC). The source was new NOAA/SWPC Region 3234, which rotated into view early today and has produced occasional optical subflares, as well as today's M4 flare. Continue to visit our webpage for the latest information, forecasts, and updates.