Peakflow Forecasts Header

SF SNOQUALMIE--NEAR GARCIA
   State:  Washington    County:  KING
   Latitude:  47 25' 0" North    Longitude:  121 35' 0" West
   Elevation:  1448 feet
   Supporting WFO:  Seattle    

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.

SF SNOQUALMIE--NEAR GARCIA   (GARW1)
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 % 12.22 755 2021-12-12
90 % 12.34 837 2021-12-19
70 % 13.01 1384 2022-01-08
50 % 13.86 2313 2022-01-27
30 % 14.96 3577 2022-02-15
10 % 16.68 5750 2022-03-12
05 % 17.18 6427 2022-03-19

Peakflow exceedence plot for GARW1

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