Atmospheric river rating system chart
![CHart showing atmospheric river rating scale from 1-5, with higher numbers primarily hazardous and lower ones primarily beneficial. Higher levels of water vapor transport and longer durations result in higher numbers.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/ARsRatingSystem.jpg?itok=mqWE9gI2)
Detailed Description
A scale that categorizes atmospheric river events based on the maximum instantaneous integrated water vapor transport (IVT) associated with a period of atmospheric river conditions (i.e., IVT ≥ 250 kg m–1 s–1) and the duration of those conditions at a point.
Sources/Usage
Public Domain.
Adapted from Ralph et al. 2019.