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
2024
Ensemble Date: 2024-03-27
Forecast Period: March 27 to July 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 11.79 547 2024-04-10
90 % 11.92 618 2024-04-11
70 % 12.27 831 2024-04-21
50 % 12.87 1287 2024-05-02
30 % 13.15 1523 2024-05-15
10 % 13.80 2115 2024-06-04
05 % 14.05 2368 2024-06-12

Peakflow exceedence plot for GARW1

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