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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

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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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S
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G
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Latest Observed
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S
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R1-R2 --
R3-R5 --
S1 or greater --
G
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R1-R2 --
R3-R5 --
S1 or greater --
G
no data
R1-R2 --
R3-R5 --
S1 or greater --
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no data
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R
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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

G2-Moderate Geomagnetic Storm Watch issued

G2 storming effects and Auroral oval forecast
G2-Moderate Geomagnetic Storm Watch issued
published: Sunday, April 03, 2016 05:45 UTC

A G2-Moderate geomagnetic storm watch has been issued for 2 April in anticipation of the arrival of a negative polarity coronal hole high speed stream (CH HSS). This recurrent CH HSS was responsible for G3-Strong conditions the previous rotation. The G2 Watch upgrades the previous G1-Minor storm watch that was valid for the same period. In addition, a G1-Minor storm watch has been issued for 3 April, due to the the influence from the same CH HSS influence.

Stay tuned here for updates.