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
2024
Ensemble Date: 2024-03-27
Forecast Period: March 27 to July 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 10.77 60993 2024-04-29
90 % 11.47 67069 2024-05-04
70 % 12.20 73638 2024-05-17
50 % 13.34 84246 2024-05-22
30 % 14.32 93389 2024-06-01
10 % 16.58 115042 2024-06-07
05 % 17.46 123734 2024-06-13

Peakflow exceedence plot for ANAW1

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