Send me BRIEFINGS from IFR, FREE!

Weekly tips, technique and training from IFR.

Features October 2018 Issue

Weather Rules of Thumb

Thunderstorm outflows, such as this vivid example, aren’t always visible on radar. But, they’re there.

Weather Rules of Thumb

Forget the TAFs and the models. Apply a few basic rules of thumb and you’ve got your forecast covered for all but the more extreme or unusual conditions.

All of these have different scales, ranging from hours and a few miles with the mountain breeze to thousands of miles and days to weeks with trade winds. Knowing which circulation normally affects your weather and which is dominant at the moment is what I would call one of the secrets to understanding the forecast. If the wind direction is normally 150 degrees on September afternoons, seeing 120 degrees tells you the wind is driven by something different.

To continue reading this article you must be a paid subscriber.

Subscribe to IFR Magazine

Get the next year of IFR Magazine for just $19.97. Get access to all articles published online. Features, reviews, lesson, quizzes - get it all.

That's a savings of more than $14 off the regular rate. Or double your savings and subscribe for 14 issues for just $39.94.

Get IFR Digital

Get 12 months of IFR DIGITAL for just $34. You get unlimited access to everything on the site including each monthly issue as a PDF.

Subscriber Log In

Forgot your password? Click Here.

Already subscribe but haven't registered for all the benefits of the website? Click here.