Peakflow Forecasts Header

MF SNOQUALMIE--NEAR TANNER
   State:  Washington    County:  KING
   Latitude:  47 29' 0" North    Longitude:  121 39' 0" West
   Elevation:  780 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.

MF SNOQUALMIE--NEAR TANNER   (TANW1)
Forecasts for Water Year
2022
Ensemble Date: 2021-12-08
Forecast Period: December 8 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.87 3434 2021-12-23
90 % 6.22 3910 2021-12-24
70 % 7.80 6682 2022-01-08
50 % 10.14 12441 2022-01-24
30 % 12.08 18647 2022-02-09
10 % 15.57 32843 2022-03-08
05 % 17.30 41399 2022-03-18

Peakflow exceedence plot for TANW1

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