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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, June 21, 2021 20:38:53

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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

G3 (Strong) Geomagnetic Storm Conditions Observed

G3 (Strong) Geomagnetic Storm Conditions Observed
published: Friday, May 14, 2021 04:40 UTC

An interplanetary shock was observed at the DSCOVR spacecraft at 12/0547 UTC, announcing the arrival of the forecasted 09 May CME. This observation was followed by a 51 nT sudden impulse at the Fredericksburg Geomagnetic Observatory (FRD) at 12/0643 UTC. G3 (Strong) geomagnetic storm conditions were observed at 12/1258 UTC (6:58 AM MDT) and 12/1759 UTC (11:59 AM MDT). The G3 Warning is valid until 12/2359 UTC (5:59 PM MDT). Stay tuned to this website (https://www.swpc.noaa.gov/) for additional updates as forecasters continue to manage this geomagnetic activity.