Peakflow Forecasts Header

CISPUS--NEAR RANDLE
   State:  Washington    County:  LEWIS
   Latitude:  46 26' 38" North    Longitude:  121 50' 28" West
   Elevation:  1260 feet
   Supporting WFO:  Seattle    

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.

CISPUS--NEAR RANDLE   (CIYW1)
Forecasts for Water Year
2027
Ensemble Date: 2026-10-09
Forecast Period: October 9 to February 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 13.86 717 2026-10-25
90 % 14.11 898 2026-11-02
70 % 16.04 2542 2026-11-28
50 % 16.92 3798 2026-12-18
30 % 17.72 6099 2027-01-08
10 % 18.57 9783 2027-01-28
05 % 19.12 12923 2027-01-31

Peakflow exceedence plot for CIYW1

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