Aug 7, 2026 · 14 min · 8 segments
Some parts of southern Arizona have received higher-than-usual rainfall this summer. National Weather Service forecaster Julia Tetrault discusses what is making the monsoon more active than previous…
Julia TetraultGuest
Erika HamdenHost
what actually sets the dates that you guys have for like when it's monsoon season and when it isn't
Because we have that high pressure setup, we get that southeast flow versus our normal setup, which is our dry southwest flow.
So that's the main thing we're looking for is that reversal of wind, allowing that moisture to come in.
Those dates are kind of based on that, when we get that moisture at the surface and then when we don't have that moisture in the surface anymore.
Snow, right? First day of winter, right? You could have it throughout the whole winter season.
what actually sets the dates that you guys have for like when it's monsoon season and when it isn't
Because we have that high pressure setup, we get that southeast flow versus our normal setup, which is our dry southwest flow.
So that's the main thing we're looking for is that reversal of wind, allowing that moisture to come in.
Those dates are kind of based on that, when we get that moisture at the surface and then when we don't have that moisture in the surface anymore.
Snow, right? First day of winter, right? You could have it throughout the whole winter season.
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