An introduction to Model Output Statistics or MOS

A majority of certificated pilots have never heard of Model Output Statistics or what is referred to as MOS (pronounced moss).  MOS isn’t new and has been around since the 1960s, but is just starting to be leveraged by many pilots.  Back in 2016 the FAA added a brief description of MOS to the Aviation Weather Services advisory circular AC 00-45H Change 1 so it is now officially recognized by the FAA as supplemental guidance for preflight planning. WeatherSpork makes heavy use of this automated guidance which drives the signature feature in WeatherSpork called the Wheels Up Departure Advisor (WUDA) found in the Map, Grid and Route Profile views.  MOS is also used by meteorologists as one of several tools to issue terminal aerodrome forecasts (TAFs).

This video below was an audio and screen recording of a presentation given by Scott Dennstaedt to a local flight school in Charlotte.  Watch this video to learn a bit more about MOS and its advantages as flight planning guidance.

“Most pilots are weatherwise, but some are otherwise.”

Scott Dennstaedt
Weather Systems Engineer
Co-founder, WeatherSpork

Scott Dennstaedt

View posts by Scott Dennstaedt
CFI and former NWS research meteorologist. Founder of and co-founder of WeatherSpork
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