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National Oceanic and Atmospheric Administration

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
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G
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Latest Observed
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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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-G2 Storming on 7 & 8 November, 2017

Auroral Oval for G1-G2 storming on 8 Nov, 2017
G1-G2 Storming on 7 & 8 November, 2017
published: Thursday, November 09, 2017 05:47 UTC

An extension of a northern, polar coronal hole high speed stream (CH HSS) continues to buffet Earth's magnetosphere causing overall, planetary geomagnetic responses to the G1 (Minor) and G2 (Moderate) storming levels. The G2 storming level was first reached on 7 November, 2017 at 1921 UTC (1421 ET) and was most recently reached on 8 November, 2017 at 0429 UTC (7 Nov/2329 ET). Periods of G1 storming first began  on 7 November, 2017 at 1155 UTC (0655 ET). A G1 Watch now continues today through 11 November, 2017 due to elevated solar wind speed from the CH HSS. Continue to check our SWPC website for the latest conditions, forecasts, alerts, warnings, and watches.