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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, April 18, 2024 11:52:49

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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

G1 (Minor) Geomagnetic Storm Warning Issued for 21 December: Watch still in effect for 22 December

Ovation Auroral Model Forecast
G1 (Minor) Geomagnetic Storm Warning Issued for 21 December: Watch still in effect for 22 December
published: Friday, December 23, 2016 01:01 UTC

A G1 (Minor) geomagnetic storm Warning has been issued for 21 December from 0331 to 1000 EST (21/0831 - 1500 UTC) due to effects from a coronal hole high speed stream. A G1 Watch remains in effect for 22 Dec.

Stay tuned for updates!