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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Wednesday, March 11, 2026 16:34:11

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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
G2 (Moderate) Warning Issued Friday, September 27, 2019 - 20:50
G1 Watch (27 and 29 Sep) G2 Watch (28 Sep) Geomagnetic Storm Watches for 27-29 September Wednesday, September 25, 2019 - 19:04
Model data from August 5th New NOAA-USGS model for electrical power grid operators Friday, September 20, 2019 - 20:32
G2 (Moderate) Geomagnetic Storm Conditions Observed Saturday, August 31, 2019 - 13:16
G1-G2 Watches 31 Aug-1 Sep, 2019 G1 Watch 31 Aug & G2 Watch 1 Sep, 2019 UTC-Days Thursday, August 29, 2019 - 20:43

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