Peakflow Forecasts Header

THOMPSON--NEAR THOMPSON FALLS
   State:  Montana    County:  SANDERS
   Latitude:  47 35' 30" North    Longitude:  115 13' 42" West
   Elevation:  2429 feet
   Supporting WFO:  Missoula    
   Action Stage:  6.5'   Flood Stage:  7'

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.

THOMPSON--NEAR THOMPSON FALLS   (THRM8)
Forecasts for Water Year
2026
Ensemble Date: 2026-01-16
Forecast Period: January 16 to May 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.39 1161 2026-03-06
90 % 4.54 1285 2026-03-22
70 % 4.74 1446 2026-04-12
50 % 5.07 1736 2026-04-19
30 % 5.31 1959 2026-04-25
10 % 6.07 2692 2026-04-29
05 % 6.28 2906 2026-05-01

Peakflow exceedence plot for THRM8

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