Peakflow Forecasts Header

HENRYS FORK--AT ST. ANTHONY
   State:  Idaho    County:  FREMONT
   Latitude:  43 58' 0" North    Longitude:  111 40' 21" West
   Elevation:  4951 feet
   Supporting WFO:  Pocatello    
   Action Stage:  6.5'   Flood Stage:  7'   Moderate Flood Stage:  8.2'
   Major Flood Stage:  
11'

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.

HENRYS FORK--AT ST. ANTHONY   (ANTI1)
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 % 3.66 1425 2022-01-02
90 % 3.67 1430 2022-01-05
70 % 3.76 1573 2022-03-09
50 % 3.90 1806 2022-03-18
30 % 4.05 2049 2022-03-26
10 % 4.41 2730 2022-03-29
05 % 4.47 2861 2022-03-30

Peakflow exceedence plot for ANTI1

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