Thursday, July 9, 2026

Dusty Convection Outflow

I wish I could say I'm glad to be back in Utah, but the aridity and dust leave much to be desired.

Yesterday at around 2000 MDT strong outflow wind from convection north of Salt Lake City picked up dust and briefly caused a spike in PM25 in some areas of the Salt Lake Valley.  Below is a photo of the dust looking south from the upper Avenues at 2007 MDT.


Observations from the University of Utah show a spike in PM2.5 to almost 40 ug/m3 at 2020 MDT.  

Source: MesoWest

There's a good chance that the exposed bed of the desiccating Great Salt Lake was a contributor to some if not most of the dust in this event.  

1 comment:

  1. Saw it from the cove and wondered what was going on. Looked like the dust was getting sucked into the clouds.

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