Thanks, Stephen, An awesome video.
Haboob was a new one to me, so it got me looking up some terminology relating to outflow boundaries. Thunderstorms lift an enormous amount of stuff and when the storm collapses, a lot of it simply falls down, displacing the air at the surface, and forcing it outward ahead and behind the storm. The line between the air pushing out and the air it is pushing on is called an outlow boundary. On many stormy nights in NM, you can see on radar, faint circles of echoes, pushing out from the storms. These are reflections from the outlow boundary, where surface air is being thrust up and forced to condense its moisture. Surprisingly, neither haboob nor derecho appear in the NWS glossary! Near as I can make out, a haboob is an outflow boundary occurring in a desert setting, that is violent enough to lift stuff off the ground, a dust storm. A derecho is an organization of outflow boundaries at least 200 miles in length that may propagats over hundreds of miles, arising from a line of thunderstorms associated with a strong advancing cold front. One famous one traveled from Iowa to DC over 36 (?) hours and did substantial damage all along its way. A derecho might or might not cause a dust storm depending on the surface over which it is traveling. You-all probably knew all of that. Nick On Thu, Jun 20, 2024 at 1:05 AM Stephen Guerin <stephen.gue...@simtable.com> wrote: > NIck, > > Check out this Haboob moving across southern NM / northern Mexico > satellite animation: > https://guerin.acequia.io/incidents/HaboobAndSouthForkFire_20240619_2.mp4 > > Roger, did you experience it? > > This while Ruidoso experiences Post Fire Debris Flow flooding and loss of > 2,400 structures > > -Stephen > -. --- - / ...- .- .-.. .. -.. / -- --- .-. ... . / -.-. --- -.. . > FRIAM Applied Complexity Group listserv > Fridays 9a-12p Friday St. Johns Cafe / Thursdays 9a-12p Zoom > https://bit.ly/virtualfriam > to (un)subscribe http://redfish.com/mailman/listinfo/friam_redfish.com > FRIAM-COMIC http://friam-comic.blogspot.com/ > archives: 5/2017 thru present > https://redfish.com/pipermail/friam_redfish.com/ > 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/ >
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