In more than 20 years as a meteorologist, I learned plenty about how people interpret weather forecasts. Perhaps the most interesting (frustrating?) thing is that people ignore the words "chance" and "scattered."
For example, here's a typical summer weather forecast that I have written many times: "Breezy and warm with a chance of scattered thunderstorms developing this afternoon."
However, when I said those words on TV or on the radio, here's what most people heard "It's going to storm today."
When I write forecasts similar to the one above, I include the words "chance" and "scattered" for specific reasons.
The word "chance" is used because meteorologists can't always determine with certainty whether it will or will not rain. For a variety of reasons, some people won't accept that. Yet the truth is, for all of the monumental leaps the science of weather forecasting has made over the last 50 years, the atmosphere remains too complicated for man or machine to accurately predict what it will do in the future in all situations.
Perhaps TV station promotion departments have something to do with it. Maybe they have oversold their meteorologist's abilities. Perhaps some meteorologists themselves have positioned themselves as better than they are. Whatever the reason, there are still many times when conditions of the atmosphere are such that we are unable to determine with certainty whether it will rain or not.
The word "scattered" is used because we often have situations in which some areas will get rain and some won't. This situation is common in Milwaukee, especially in the summer. Atmospheric conditions are often such that individual storms can occur and bring heavy rain to one part of town while others remain dry.
I can't tell you how many times I've taken phone calls that went like this:
Caller: "I thought it was supposed to rain today."
Me: "It did."
Caller: "It didn't at my house."
Me: "That's true. The storms were scattered. Some plac…Read more...