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 2026
Ensemble Date: 2026-06-14
 Forecast Period: June 14 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.38 2586 2026-06-14
90 % 6.38 2586 2026-06-14
70 % 6.38 2586 2026-06-14
50 % 6.38 2586 2026-06-14
30 % 6.83 3297 2026-09-15
10 % 9.28 8700 2026-09-29
05 % 14.29 28388 2026-10-01

Peakflow exceedence plot for GLBW1

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