Peakflow Forecasts Header

CARBON--NEAR FAIRFAX
   State:  Washington    County:  PIERCE
   Latitude:  47 2' 0" North    Longitude:  122 1' 59" West
   Elevation:  1213 feet
   Supporting WFO:  Seattle    
   Action Stage:  11.6'   Flood Stage:  13.5'   Moderate Flood Stage:  14.5'
   Major Flood Stage:  15'

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.

CARBON--NEAR FAIRFAX   (FFXW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-07-04
 Forecast Period: July 4 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 7.92 428 2025-07-14
90 % 8.02 462 2025-07-24
70 % 8.50 650 2025-09-26
50 % 8.95 880 2025-10-21
30 % 10.06 1695 2025-10-27
10 % 11.81 4040 2025-11-01
05 % 13.48 7182 2025-11-01

Peakflow exceedence plot for FFXW1

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