Peakflow Forecasts Header

SNAKE--NEAR ANATONE
   State:  Washington    County:  ASOTIN
   Latitude:  46 5' 49" North    Longitude:  116 58' 36" West
   Elevation:  807 feet
   Supporting WFO:  Spokane    
   Action Stage:  19'   Flood Stage:  20'   Moderate Flood Stage:  23'
   Major Flood Stage:  
24'

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.

SNAKE--NEAR ANATONE   (ANAW1)
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 % 5.81 25383 2022-01-05
90 % 6.30 28208 2022-01-29
70 % 7.10 33255 2022-03-03
50 % 8.22 40926 2022-03-16
30 % 9.07 47238 2022-03-26
10 % 10.28 56912 2022-04-01
05 % 11.52 67465 2022-04-01

Peakflow exceedence plot for ANAW1

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