Peakflow Forecasts Header

ELWHA--AT MCDONALD BRIDGE NEAR PORT ANGELES
   State:  Washington    County:  CLALLAM
   Latitude:  48 3' 18" North    Longitude:  123 34' 55" West
   Elevation:  200 feet
   Supporting WFO:  Seattle    
   Action Stage:  17.3'   Flood Stage:  20'   Moderate Flood Stage:  21.5'
   Major Flood Stage:  
23'

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

ELWHA--AT MCDONALD BRIDGE NEAR PORT ANGELES   (ELWW1)
Forecasts for Water Year
2022
Ensemble Date: 2021-12-07
Forecast Period: December 7 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 13.77 6357 2021-12-12
90 % 13.77 6357 2021-12-12
70 % 13.97 6713 2021-12-17
50 % 14.76 8150 2022-01-05
30 % 17.61 13663 2022-01-27
10 % 20.50 19968 2022-03-01
05 % 21.65 22579 2022-03-15

Peakflow exceedence plot for ELWW1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon