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National Oceanic and Atmospheric Administration

Friday, April 19, 2024 10:09:09

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NOAA Scales mini

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
R
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G
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Latest Observed
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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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

G1 Watch issued for next coronal hole

SDO/AIA 211 imagery
G1 Watch issued for next coronal hole
published: Saturday, December 12, 2015 12:41 UTC

A G1-Minor geomagnetic storm Watch was issued for 10 and 11 December, 2015.  This Watch is in response to the next coronal hole expected to influence the Earth's magnetosphere.  It is located near center disk and is expected to become geo-effective (become well connected to the Earth's magnetic field lines) early on 10 December.  Any Warnings or Alerts will be issued if/when conditions warrant.

Stay tuned here for details.