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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, January 16, 2018 21:45:17

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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 Geomagnetic Storms Likely 23-24 Aug 2015

WSA-Enlil Depiction
G1-Minor Geomagnetic Storms Likely 23-24 Aug 2015
published: Wednesday, August 26, 2015 00:54 UTC

G1-Minor geomagnetic storms are likely on 23 Aug 2015 due to a recurrent coronal hole high speed stream (CH HSS). G1 levels are now expected to continue into 24 Aug 2015 as a combination of two coronal mass ejections (CMEs) are predicted to arrive in conjunction with continued HSS effects. The WSA-Enlil model run pictured depicts the CME arrival early on the 24th.