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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Thursday, January 09, 2025 09:13:01 UTC

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NOAA Scales mini

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

3-Day Geomagnetic Forecast

A daily deterministic and probabilistic forecast, for next three days, of geomagnetic activity. Observed values of Ap and deterministic Ap forecasts are provided, followed by probabilistic forecasts for four categories of geomagnetic activity, and deterministic 3-hourly Kp forecasts for three days.

Three-day forecast of Ap, Kp, and Geomagnetic Storm levels

The forecasts for the past 75 days can be found at ftp://ftp.swpc.noaa.gov/pub/forecasts/geomag_forecast/