Peakflow Forecasts Header

SPOKANE--AT SPOKANE
   State:  Washington    County:  SPOKANE
   Latitude:  47 39' 34" North    Longitude:  117 26' 52" West
   Elevation:  1696 feet
   Supporting WFO:  Spokane    
   Action Stage:  26'   Flood Stage:  27'   Moderate Flood Stage:  29'
   Major Flood Stage:  30'

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.

SPOKANE--AT SPOKANE   (SPOW1)
Forecasts for Water Year 2027
Ensemble Date: 2026-10-05
 Forecast Period: October 5 to February 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 19.27 3640 2026-11-01
90 % 20.21 5675 2026-11-05
70 % 20.79 7148 2026-11-24
50 % 21.32 8665 2026-12-08
30 % 22.12 11210 2027-01-15
10 % 23.59 16466 2027-01-31
05 % 23.89 17573 2027-01-31

Peakflow exceedence plot for SPOW1

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