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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Tuesday, April 24, 2018 21:11:16

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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 for 22 and 23 October UTC Days

G1 Watch for 22 and 23 October with SDO image
G1 Watch for 22 and 23 October UTC Days
published: Monday, October 24, 2016 20:52 UTC

A G1 (Minor) watch is in effect for both 22 and 23 October UTC days. The G1 watch was issued due to a few likely periods of minor geomagnetic storming in response to effects from a recurrent, isolated coronal hole high speed stream (CH HSS). Additionally, SWPC forecasters are closely monitoring the return of another CH HSS, currently anticipated to rotate into an Earth-influential position as early as 24 October. This second CH HSS is also a recurrent feature that provided three days of G1 level activity and periods of G2 (Moderate) storming last rotation. Please continue to visit our website to see the latest forecasts and updates.