Peakflow Forecasts Header

LEMHI--NEAR LEMHI
   State:  Idaho    County:  LEMHI
   Latitude:  44 56' 24" North    Longitude:  113 38' 16" West
   Elevation:  4960 feet
   Supporting WFO:  Missoula    
   Action Stage:  6'   Flood Stage:  6.5'   Moderate Flood Stage:  8.5'
   Major Flood Stage:  10'

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.

LEMHI--NEAR LEMHI   (LERI1)
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 % 4.51 395 2025-05-12
90 % 4.51 395 2025-05-12
70 % 4.51 395 2025-05-12
50 % 4.56 418 2025-05-30
30 % 4.75 506 2025-06-06
10 % 5.23 753 2025-06-16
05 % 5.36 827 2025-06-19

Peakflow exceedence plot for LERI1

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