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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Friday, September 20, 2019 04:05:45

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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 Watch 31 Aug & G2 Watch 1 Sep, 2019 UTC-Days

G1-G2 Watches 31 Aug-1 Sep, 2019
G1 Watch 31 Aug & G2 Watch 1 Sep, 2019 UTC-Days
published: Monday, September 02, 2019 11:38 UTC

A G2 (Moderate) Watch remains in effect for the 01 September, 2019 UTC-day.

A G1 (Minor) Warning is valid through 01/2359 UTC.

A G2 (Moderate) Warning is valid through 01/2100 UTC.

These geomagnetic storm conditions are in response to influences associated with a positive polarity coronal hole high speed stream (CH HSS). Solar wind speeds have reached in excess of 800 km/s with this recurrent coronal hole.Continue to monitor our webpage for the latest forecasts, warnings, and alerts.