Peakflow Forecasts Header

BLACKFOOT--NEAR BONNER
   State:  Montana    County:  MISSOULA
   Latitude:  46 53' 58" North    Longitude:  113 45' 20" West
   Elevation:  3345 feet
   Supporting WFO:  Missoula    
   Action Stage:  9.5'   Flood Stage:  10'   Moderate Flood Stage:  16'
   Major Flood Stage:  
17'

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.

BLACKFOOT--NEAR BONNER   (BONM8)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-25
Forecast Period: April 25 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.53 3086 2024-05-06
90 % 4.57 3145 2024-05-10
70 % 5.03 3851 2024-05-16
50 % 5.41 4481 2024-05-21
30 % 5.66 4926 2024-05-27
10 % 6.26 6059 2024-06-06
05 % 6.98 7568 2024-06-17

Peakflow exceedence plot for BONM8

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