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
2024
Ensemble Date: 2024-04-23
Forecast Period: April 23 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.52 3086 2024-05-07
90 % 5.97 3647 2024-05-12
70 % 6.70 4674 2024-05-16
50 % 7.47 5952 2024-05-24
30 % 8.38 7698 2024-06-05
10 % 10.38 12372 2024-06-15
05 % 11.66 15981 2024-06-28

Peakflow exceedence plot for TANW1

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