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 2024
Ensemble Date: 2024-04-24
 Forecast Period: April 24 to August 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 11.37 2218 2024-05-09
90 % 11.47 2341 2024-05-11
70 % 11.70 2639 2024-05-16
50 % 11.87 2878 2024-05-30
30 % 12.02 3100 2024-06-07
10 % 12.31 3528 2024-06-29
05 % 12.48 3800 2024-07-15

Peakflow exceedence plot for ELWW1

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