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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, December 14, 2017 05:55:46

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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

Interplanetary Shock Arrived at ACE - Geomagnetic Disturbance in Progress

ACE SWEPAM plot showing interplanetary shock arrival.
Interplanetary Shock Arrived at ACE - Geomagnetic Disturbance in Progress
published: Wednesday, December 24, 2014 15:15 UTC

An interplanetary shock was detected at the ACE spacecraft December 21st at approximately 1824 UTC (1:24 p.m. EST).  This shock is believed to be associated with the coronal mass ejection from December 18th.  Active to minor storm (G1 - Minor) conditions followed and are expected to persist through the end of December 22nd. You'll find the latest aurora predictions at http://www.swpc.noaa.gov/products/30-minute-aurora-forecast