Peakflow Forecasts Header

SKYKOMISH--NEAR GOLD BAR
   State:  Washington    County:  SNOHOMISH
   Latitude:  47 50' 7" North    Longitude:  121 39' 36" West
   Elevation:  209 feet
   Supporting WFO:  Seattle    
   Action Stage:  12.2'   Flood Stage:  15'   Moderate Flood Stage:  17'
   Major Flood Stage:  
19'

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.

SKYKOMISH--NEAR GOLD BAR   (GLBW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-06-30
Forecast Period: June 30 to October 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.80 1698 2025-07-02
90 % 5.80 1698 2025-07-02
70 % 5.80 1698 2025-07-02
50 % 6.12 2097 2025-08-07
30 % 6.92 3299 2025-09-20
10 % 10.07 10733 2025-09-30
05 % 14.45 28797 2025-10-01

Peakflow exceedence plot for GLBW1

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