Are you talking about the local NWS offices in the PNW?

I always tell tech savvy people to look at the forecast discussion and not the infographics. For example, look at Spokane:

https://forecast.weather.gov/MapClick.php?lat=47.65726000000...

Then select 'Forecast Discussion' and read the discussions. They are usually updated a few times a day at the minimum, but during active weather events they are generally updated every 3 to 4 hours with new information (more data from the 850mb layer, for example).