Convective outflow boundaries

Updated: Jul 12, 2021

When thunderstorms develop and evolve, their "exhaust" is cold dense air flowing down through the storm, striking the ground and moving outward away from the storm. To better understand this, imagine pouring pancake batter onto a griddle.  The edge of that pancake is the outflow boundary which is essentially a gust front of sorts.  Are they dangerous if you encountered one of these in flight?  Enjoy this loop of a nearly perfect outflow boundary emanating from convection that erupted  over the Fort Worth WSR-88D Doppler radar site.  If you were wondering, these outflow boundaries (and gust fronts) are filtered out of the radar depiction you will get with SiriusXM and FIS-B.





Most pilots are weatherwise, but some are otherwise™


Scott Dennstaedt

Weather Systems Engineer

CFI & former NWS research meteorologist

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