Peakflow Forecasts Header

SNOQUALMIE--NEAR SNOQUALMIE
   State:  Washington    County:  KING
   Latitude:  47 32' 43" North    Longitude:  121 50' 28" West
   Elevation:  120 feet
   Supporting WFO:  Seattle    
   Action Stage:  11.89'   Flood Stage:  13.43'   Moderate Flood Stage:  15.94'
   Major Flood Stage:  
17.21'

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.

SNOQUALMIE--NEAR SNOQUALMIE   (SQUW1)
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 % 9.17 8073 2021-12-12
90 % 9.17 8073 2021-12-12
70 % 11.01 12482 2022-01-08
50 % 14.45 23741 2022-01-18
30 % 16.15 32519 2022-02-11
10 % 18.91 57869 2022-03-14
05 % 19.78 68088 2022-03-23

Peakflow exceedence plot for SQUW1

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