Peakflow Forecasts Header

BITTERROOT--NEAR MISSOULA
   State:  Montana    County:  MISSOULA
   Latitude:  46 49' 55" North    Longitude:  114 3' 11" West
   Elevation:  3110 feet
   Supporting WFO:  Missoula    
   Action Stage:  10'   Flood Stage:  11'   Moderate Flood Stage:  13'
   Major Flood Stage:  
15'

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.

BITTERROOT--NEAR MISSOULA   (BITM8)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-12
Forecast Period: July 12 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.35 956 2025-07-20
90 % 3.37 975 2025-08-01
70 % 3.44 1040 2025-09-02
50 % 3.62 1208 2025-09-22
30 % 3.78 1368 2025-10-11
10 % 4.54 2274 2025-10-30
05 % 4.69 2468 2025-11-01

Peakflow exceedence plot for BITM8

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