If you’ve never come across the term, you may be wondering, “What exactly is a dry thunderstorm?” We’re glad you asked (even if you didn’t!) Fortunately I was able to whip up this short, educational video just in time for the article.
Now that we understand dry thunderstorms a little better, let’s discuss when and where we’re expecting them on Friday.
The brown shaded area you see here is for ISO DRYT. That stands for Isolated Dry Thunderstorms. Remember, that’s *less than* scattered. Whenever you hear a forecast, scattered will mean more than isolated (example scattered showers versus isolated showers). According to the demonstration above, that means that high-based clouds will develop, some may grow tall/strong enough to produce lightning and thus, dry thunderstorms. The Desert Southwest is notorious for dry thunderstorms because of the extremely dry climate, mixed with thunderstorms that develop closer to the monsoon season.
For Friday the 27th specifically, the timing for these isolated thunderstorms will be during the heart of the afternoon.
The biggest concern with dry thunderstorms is the development of new wildfires. Arizona and New Mexico are experiencing drought conditions as well, which raises the concern about any new wildfires flaring up.
For WeatherNation, Meteorologist Steve Glazier