WRF, NAM, and GFS numerical weather prediction models update 4-times daily.

The Weather Research and Forecasting Model (WRF) 36-hour forecast (Last Updated: 04/20/2019 at 23:42:25)

The North American Model (NAM) 84-hour forecast (Last Updated: 04/21/2019 at 06:31:56)

The Global Forecast System (GFS) 186-hour Forecast (Last Updated: 04/21/2019 at 03:48:14)