How to measure rainfall from the atmospheric rivers hitting Oregon, Washington

TriMet on Instagram: "Enjoy the vibrant Portland fall colors by checking out the 4 T Trail 👇🍂 🚉 Train: Start your journey at Pioneer Courthouse Square. Take a Westbound Blue or Red Line MAX train to Washington Park. 🥾 Trail: Upon arriving at the Washington Park station, use the elevator to reach the street level. Walk toward the Oregon Zoo, where you will begin to see signs for the 4 T Trail along the sidewalks. Cross the Highway 26 overpass and hike uphill on the Marquam Trail to Council Cr