Gotta love a chart that doesn't actually define it's scale. What exactly is "Abnormally" compare to historical norms? It smacks of agenda driven chartology.
Pugs, pretty good definitions and description of how that chart is made on their website
What is the USDM
Maybe you’ve seen it in the media: that map of the U.S. painted with blobs of yellow,orange and red. It shows drought – but how do we know which colors go where? Who decides? What does it mean for you? Read below to find out.
The two easiest for me to see and understand are the "CPC soil moisture models" and the "USGS weekly streamflow" both of which are percentile rankings.
Right now our area is in the 1-5 percentile of soil moisture and 1% of normal streamflow. Those are pretty low measurements by any standard.
It may be a little bit of scientific mumbo jumbo..................................but it's decent mumbo jumbo for what that's worth.
![[Linked Image from droughtmonitor.unl.edu]](https://droughtmonitor.unl.edu/data/jpg/20210615/20210615_usdm.jpg)
