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: 2024-04-26
Forecast Period: April 26 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.57 3140 2024-05-09
90 % 5.98 3654 2024-05-12
70 % 6.75 4757 2024-05-16
50 % 7.58 6146 2024-05-24
30 % 8.43 7794 2024-06-04
10 % 10.49 12656 2024-06-14
05 % 11.70 16127 2024-06-22

Peakflow exceedence plot for TANW1

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