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National Oceanic and Atmospheric Administration

Sunday, January 21, 2018 21:58:06

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NOAA Scales mini

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Space Weather Conditions
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
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

G2 (Moderate) Watch Issued for 03 January

G2 (Moderate) Watch Issued for 03 January
published: Monday, January 04, 2016 01:11 UTC

An R1 (Minor) radio blackout followed by an S1 (Minor) solar radiation storm occurred on 02 January 2016. The flare associated with this event was a long duration M2.3 flare that originated from NOAA Region AR12473, located near the Sun's southwestern (bottom right) limb and peaked at 02/0011 UTC (01/1911 EST).  After the flare, an enhancement was observed in GOES-13 Proton Flux that crossed the NOAA Scale S1 (Minor) threshold at 02/0430 UTC, resulting in possible minor impacts on HF radio communications in the polar regions.  Associated with this event was a fast-moving, asymmetric, partial-halo coronal mass ejection (CME) pictured above.  Analysis of this CME, and subsequent WSA-Enlil model output, suggests a possible glancing blow at Earth early to midday EST on 03 January resulting in G1 (Minor) to G2 (Moderate) geomagnetic storms.  Stay tuned here for further updates.