McPhee Reservoir Inflow Daily Average Forecast Flow (ending 12z on given date) Units: CFSD Created: May 17 2018 DAILY TOTAL: deterministic forecast flow (official forecast on CBRFC website) ESP TOTAL: 50% exceedance forecast flow based on climatology DATE,TOTAL, 2018-05-18,440,Daily Model Output (20180517) 2018-05-19,438 2018-05-20,393 2018-05-21,349 2018-05-22,324 2018-05-23,319 2018-05-24,289 2018-05-25,255 2018-05-26,230 2018-05-27,214 2018-05-28,200 2018-05-29,189 2018-05-30,179 2018-05-31,170 2018-06-01,161 2018-06-02,174,ESP Model Output (20180516) 2018-06-03,165 2018-06-04,158 2018-06-05,152 2018-06-06,145 2018-06-07,139 2018-06-08,132 2018-06-09,127 2018-06-10,120 2018-06-11,118 2018-06-12,113 2018-06-13,108 2018-06-14,104 2018-06-15,100 2018-06-16,99 2018-06-17,95 2018-06-18,91 2018-06-19,87 2018-06-20,83 2018-06-21,80 2018-06-22,77 2018-06-23,76 2018-06-24,73 2018-06-25,71 2018-06-26,68 2018-06-27,67 2018-06-28,67 2018-06-29,65 2018-06-30,63 2018-07-01,61 2018-07-02,59 2018-07-03,57 2018-07-04,56 2018-07-05,54 2018-07-06,53 2018-07-07,57 2018-07-08,52 2018-07-09,53 2018-07-10,53 2018-07-11,51 2018-07-12,50 2018-07-13,48 2018-07-14,48 2018-07-15,50 2018-07-16,50 2018-07-17,51 2018-07-18,50 2018-07-19,48 2018-07-20,46 2018-07-21,46 2018-07-22,47 2018-07-23,49 2018-07-24,53 2018-07-25,57 2018-07-26,57 2018-07-27,54 2018-07-28,59 2018-07-29,67 2018-07-30,75 2018-07-31,66 SPECIFIC SITE NOTES: GENERAL NOTES: - Days 1-15 are from the CBRFC deterministic model. This uses 5 days of precipitation forecasts and 15 days of temperature forecasts. These are updated daily and will change as the weather forecast changes so there is increasing uncertainty past days 3-5. - Days 16 and beyond are from the Ensemble Prediction Model (ESP). This model is driven primarily by climatology for the 1981-2015 period. This guidance is probabilistic and used the 50% exceedance value. It is best to use this as a possible pattern of flow into the future as opposed to an exact value that will occur. - An abrupt change in guidance may occur at the switch from the daily model to the ESP model. Some possible reasons are: - The daily model is using a temperature forecast that is either much above or below normal before reverting to normal temperatures in ESP. - If there is regulation (reservoirs; diversions; etc.) above the forecast point there may be differences between the two runs in how they are being handled. Please check with CBRFC forecasters for details on specific forecast points.