Peakflow Forecasts Header

YAKIMA--NEAR PARKER
   State:  Washington    County:  YAKIMA
   Latitude:  46 29' 48" North    Longitude:  120 26' 29" West
   Elevation:  889 feet
   Supporting WFO:  Pendleton    
   Action Stage:  9.4'   Flood Stage:  10'   Moderate Flood Stage:  12'
   Major Flood Stage:  
14'

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--NEAR PARKER   (PARW1)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.75 2330 2025-05-15
90 % 3.75 2330 2025-05-15
70 % 3.77 2358 2025-05-20
50 % 3.97 2630 2025-05-27
30 % 4.21 2976 2025-06-01
10 % 4.83 3960 2025-06-13
05 % 5.39 5000 2025-06-20

Peakflow exceedence plot for PARW1

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