UPDATE: The NWS released a Blowing Dust Advisory at 9:47 a.m. this morning.
"For the Blowing Dust Advisory, visibility between one-quarter and one mile in blowing dust expected later this afternoon into this evening," the NWS said.
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The mountains surrounding Tucson were hidden behind a thick haze Thursday morning.
According to the National Weather Service, Tucson, the blocked view was due to "dust being lofted into the atmosphere from storm activity overnight."
The NWS said the haze should mix out by mid-to-late morning.
