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.