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 2025
Ensemble Date: 2025-07-04
 Forecast Period: July 4 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 18.13 1742 2025-10-02
90 % 18.14 1744 2025-10-06
70 % 18.16 1770 2025-10-11
50 % 18.55 2310 2025-10-20
30 % 19.76 4538 2025-10-28
10 % 21.63 9332 2025-11-01
05 % 22.67 12734 2025-11-01

Peakflow exceedence plot for SPOW1

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