Peakflow Forecasts Header

NISQUALLY--NEAR NATIONAL
   State:  Washington    County:  PIERCE
   Latitude:  46 45' 10" North    Longitude:  122 4' 57" West
   Elevation:  1450 feet
   Supporting WFO:  Seattle    

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.

NISQUALLY--NEAR NATIONAL   (NISW1)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-24
Forecast Period: April 24 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.76 1206 2024-05-06
90 % 5.88 1316 2024-05-07
70 % 6.10 1535 2024-05-14
50 % 6.44 1900 2024-05-22
30 % 7.00 2597 2024-05-30
10 % 8.00 4104 2024-06-14
05 % 8.14 4341 2024-06-18

Peakflow exceedence plot for NISW1

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