Peakflow Forecasts Header

YAKIMA--AT KIONA
   State:  Washington    County:  YAKIMA
   Latitude:  46 15' 11" North    Longitude:  119 28' 37" West
   Elevation:  454 feet
   Supporting WFO:  Pendleton    
   Action Stage:  11'   Flood Stage:  13'   Moderate Flood Stage:  14.5'
   Major Flood Stage:  
16'

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.

YAKIMA--AT KIONA   (KIOW1)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-25
Forecast Period: April 25 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.75 4629 2024-04-29
90 % 5.75 4629 2024-04-29
70 % 5.84 4754 2024-05-12
50 % 6.71 6093 2024-05-18
30 % 6.94 6454 2024-05-27
10 % 8.03 8274 2024-06-12
05 % 8.86 9679 2024-06-21

Peakflow exceedence plot for KIOW1

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