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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, April 17, 2024 08:03:39

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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
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G
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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

Update: Continued G4 (Severe) Geomagnetic Storming Observed

Update: Continued G4 (Severe) Geomagnetic Storming Observed
published: Saturday, September 09, 2017 01:54 UTC

G4 (Severe) geomagnetic storm levels were observed at 2350 UTC (19:50 Eastern) on 07 September, again at 0151 UTC (21:51 Eastern) on 08 September and 1304 UTC (09:04 Eastern) due to effects from a coronal mass ejection.  A G3 (Strong) or greater warning continues to be in effect until 1500 UTC (11:00 Eastern) on 08 September.