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National Oceanic and Atmospheric Administration

Monday, November 20, 2017 07:42:24

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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 Watch issued for 13 September; G1 Watch issued for 14 September

G2 Watch issued for 13 September; G1 Watch issued for 14 September
G2 Watch issued for 13 September; G1 Watch issued for 14 September
published: Wednesday, September 13, 2017 21:14 UTC

A coronal hole high speed stream, originating from a recurrent, positive polarity coronal hole seen in the SDO/AIA 193 image above, is likely to cause geomagnetic storming at the G2 level on 13 September 2017, and at the G1 level on 14 September. Stay tuned for additional updates.