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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, March 16, 2026 21:19:25

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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

G2 Moderate Geomagnetic Storm Watch Issued
published: Monday, March 16, 2026 21:15 UTC

A G2 (Moderate) Geomagnetic Storm Watch has been issued for 19 Mar 2026 (UTC day) due to the arrival of CMEs that left the Sun on 16 Mar. For more information, see: https://www.youtube.com/shorts/MZIjop9bcK8

DAP - temp Head Section