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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, December 12, 2017 00:37:19

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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

G1 (Minor) Storm Conditions Observed, G2 (Moderate) Warning Issued - 16 July 2017

G1 (Minor) Storm Conditions Observed, G2 (Moderate) Warning Issued - 16 July 2017
published: Sunday, July 16, 2017 20:26 UTC

The geomagnetic field reached G1 (Minor) geomagnetic storm levels at 16/1105 UTC following the arrival of a coronal mass ejection (CME).  A G2 (Moderate) warning is valid 16/1040-1800 UTC.