7 Day Accumulated QPE/QPF

7 Day Accumulated Qualitative Precipitation Estimate (QPE)/Forecast (QPF) and Return Frequency

This page displays APRFC's accumulated precipitation estimate for the past 7 days and accumulated precipitation forecast for the next 7 days on the top row.  The bottom row displays the associated precipitation return frequency.  Mouse-over a button to display the desired image below. 

For return frequency, values below 1 represent the ratio of precipitation vs the 1-year return frequency value. Values above 1 indicate the return frequency in years.  For example, if the value is 25, then the precipitation amount equals the 25-year return frequency.  (i.e. a 1 in 25 year event).  If the value is 0.5, then the precipitation amount is half of the 1-year return frequency.  Precipitation frequency values were obtained from the NOAA Atlas 14 dataset (https://hdsc.nws.noaa.gov).