Weekly tips, technique and training from IFR.

Features June 2018 Issue

More MOS

The aviation forecast tables at are probably the easiest to interpret. There are charts, like the four shown, for sky cover, temperature, wind chill, wind direction and speed, cloud bases, visibility, chance of precipitation and thunderstorms, humidity, dew point, and temperature-dewpoint spread. Better yet, the forecast extends 60 hours.

More MOS

Modeled Output Statistics provides TAF-level forecasts to smaller airports without TAFs. If weather matters to you, which it should, add these forecasts to your toolset.

While I was driving to the airport a layer of radiation fog condensed and became a pattern-smashing iron plate by flight time. While waiting for tower to cut the next ATIS, I poked around weather forecasts and noticed that the MOS forecast predicted, correctly, low ceilings for the rest of the morning. Argh!

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