Peakflow Forecasts Header

MF FLATHEAD--NEAR WEST GLACIER
   State:  Montana    County:  FLATHEAD
   Latitude:  48 29' 43" North    Longitude:  114 0' 33" West
   Elevation:  3129 feet
   Supporting WFO:  Missoula    
   Action Stage:  9'   Flood Stage:  10'   Moderate Flood Stage:  14'
   Major Flood Stage:  
18'

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 FLATHEAD--NEAR WEST GLACIER   (WGCM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 6.68 13537 2025-05-13
90 % 6.68 13537 2025-05-13
70 % 6.68 13537 2025-05-13
50 % 6.68 13537 2025-05-13
30 % 6.81 13988 2025-05-28
10 % 7.22 15454 2025-06-11
05 % 7.72 17253 2025-06-19

Peakflow exceedence plot for WGCM8

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