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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Saturday, April 20, 2024 04:03:30

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
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
on NOAA Scales
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 (Moderate) Geomagnetic Storm Watch Issued for 23 April

G2 (Moderate) Geomagnetic Storm Watch Issued for 23 April
published: Sunday, April 23, 2017 09:27 UTC

SWPC Forecasters have issued a G2 (Moderate) geomagnetic storm watch for 23 April, followed by a G1 (Minor) geomagnetic storm watch for 24 and 25 April, due to continued influence from a recurrent, negative-polarity coronal hole high speed stream. Over the past 30 hours, numerous G1 and G2 storm levels have been observed. Check here for continued updates.