Confusion With A Chance Of Clarity: Your Weather Questions, Answered

Many listeners and readers felt a concise explanation of "a 20 percent chance of rain" was missing from this story, so we followed up with two meteorologists.

From Meterologist Eli Jacks, of NOAA's National Weather Service: "There's a 20 percent chance that at least 100th of an inch of rain — and we call that measurable amounts of rain — will fall at any specific point in a forecast area."

From Jason Samenow, chief meteorologist with The Washington Post's Capital Weather Gang: "It simply means for any locations for which the 20 percent chance of rain applies, measurable rain (more than a trace) would be expected to fall in two of every 10 weather situations like it."

Copyright 2014 NPR. To see more, visit

Most Popular