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Space Weather Prediction Center

National Oceanic and Atmospheric Administration

Monday, March 17, 2025 05:08:32 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

Forecast Discussion

The product was designed to be a free form, technical forecast discussion that details observed data, analysis, and forecast rationale. Users of this product typically desire more information about the observed data supporting forecasts as well as a detailed explanation for why conditions are expected. Users desiring a more simple outline of conditions expected should refer to the 3-Day Forecast product.

Issued every 12 hours, twice daily at 0030 UTC and 1230 UTC (and updated out-of-cycle as conditions warrant), detailing recently observed space weather data, model guidance, and forecaster rationale and tailored toward the sophisticated user and detailed scientific perspective “ Forecast and observed (summary) criterion is broken down into 4 sections by phenomenon type and 2 sub-sections; Summary and Forecast.

For more details, please see the Forecast Discussion informational text.

Details about this page are available in the Forecast Discussion informational text.

https://services.swpc.noaa.gov/text/discussion.txt

Current and previous Forecast Discussion text files are available.