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
2022
Ensemble Date: 2021-12-08
Forecast Period: December 8 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 2.41 786 2021-12-08
90 % 2.41 786 2021-12-08
70 % 2.64 957 2022-03-16
50 % 3.03 1292 2022-03-24
30 % 3.43 1679 2022-03-29
10 % 4.05 2410 2022-04-01
05 % 4.20 2612 2022-04-01

Peakflow exceedence plot for BONM8

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