Peakflow Forecasts Header

SATSOP--NEAR SATSOP
   State:  Washington    County:  GRAYS HARBOR
   Latitude:  47 0' 2" North    Longitude:  123 29' 40" West
   Elevation:  21 feet
   Supporting WFO:  Seattle    
   Action Stage:  36'   Flood Stage:  38'   Moderate Flood Stage:  40'
   Major Flood Stage:  42'

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.

SATSOP--NEAR SATSOP   (SATW1)
Forecasts for Water Year 2027
Ensemble Date: 2026-10-09
 Forecast Period: October 9 to February 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 34.21 8554 2026-11-16
90 % 35.38 11295 2026-11-20
70 % 36.98 16831 2026-12-04
50 % 37.54 20862 2026-12-16
30 % 38.24 26156 2027-01-02
10 % 38.99 32020 2027-01-20
05 % 39.30 34530 2027-01-28

Peakflow exceedence plot for SATW1

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