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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, April 20, 2026 21:34:17

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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

News Archive

Previous SWPC news items.

DAP - temp Head Section

News Archive

Originally Posted
The NWS Fall Safety Campaign Has Begun Tuesday, September 1, 2015 - 20:55
G1 (Minor) Geomagnetic Storms Likely on 01 December 2015 Saturday, November 28, 2015 - 21:09
Ovation Auroral oval forecast G1-Minor storm conditions observed Thursday, November 19, 2015 - 01:05
GONG H-alpha image G1(Minor) storm likely/chance for G2(Moderate) Tuesday, November 17, 2015 - 05:32
Wing Kp Model Output to Change Wing Kp Model Output to Change Friday, August 28, 2015 - 01:34

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