Peakflow Forecasts Header

OKANOGAN--NEAR TONASKET
   State:  Washington    County:  OKANOGAN
   Latitude:  48 37' 57" North    Longitude:  119 27' 28" West
   Elevation:  861 feet
   Supporting WFO:  Spokane    
   Action Stage:  14'   Flood Stage:  15'   Moderate Flood Stage:  17'
   Major Flood Stage:  
18'

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.

OKANOGAN--NEAR TONASKET   (TONW1)
Forecasts for Water Year
2022
Ensemble Date: 2021-12-07
Forecast Period: December 7 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 9.07 5941 2021-12-07
90 % 9.07 5941 2021-12-07
70 % 9.07 5941 2021-12-07
50 % 9.07 5941 2021-12-07
30 % 9.07 5941 2021-12-07
10 % 9.69 6986 2022-03-08
05 % 10.31 8137 2022-03-31

Peakflow exceedence plot for TONW1

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