Peakflow Forecasts Header

FISHER--NEAR LIBBY
   State:  Montana    County:  FLATHEAD
   Latitude:  48 21' 20" North    Longitude:  115 18' 50" West
   Elevation:  2134 feet
   Supporting WFO:  Missoula    
   Action Stage:  7'   Flood Stage:  7.5'   Moderate Flood Stage:  8.5'
   Major Flood Stage:  
10'

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.

FISHER--NEAR LIBBY   (FISM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-05
Forecast Period: July 5 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.08 133 2025-07-05
90 % 3.08 133 2025-07-05
70 % 3.08 133 2025-07-05
50 % 3.08 133 2025-07-05
30 % 3.38 211 2025-09-27
10 % 4.64 847 2025-10-28
05 % 5.39 1468 2025-11-01

Peakflow exceedence plot for FISM8

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