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National Oceanic and Atmospheric Administration

Thursday, March 27, 2025 22:01:57

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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

G1 and G2 Watches for 30 Nov - 1 Dec, 2023

G1-G2 Watches for 30 Nov - 1 Dec, 2023
G1 and G2 Watches for 30 Nov - 1 Dec, 2023
published: Friday, December 01, 2023 15:46 UTC

Multiple coronal mass ejections (CMEs) occurred from the Sun on 27 November, 2023. Three of these CMEs appear to have Earth-directed components with the first arrival as a potential glancing blow or near-Earth proximity passage beginning as early as late on 29 Nov EST (early 30 Nov UTC). The later CMEs are anticipated to arrive at Earth near the end of 30 Nov EST (early 1 Dec UTC) as at least glancing blows. Analysis and model results suggest G1 levels are probable on the 30 Nov UTC-day in response to any initial CME influences, followed by G2 levels on the 1 Dec UTC-day as the additional CMEs arrive. Continue to follow our webpage for the latest forecasts and updates.