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- This HPC forecast discussion is directed completely to explaining manual forecasts of areas in the contiguous 48 states expected to receive 1/4 inch or more precipitation during a 24-hour period. The manual forecasts are explained in terms of initial conditions and differences and/or similarities in the numerical model forecasts. General confidence in the manual forecast is expressed where it is appropriate and possible alternatives may be offered. This product is issued 3 times a day.
NOAA National Weather Service - Cite This Source - This Definition
- AFD, Area Forecast Discussion, Extended Forecast Discussion, Outlook, PMD, QPFPFD