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Where is the 2020 Monsoon for Tucson?

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TUCSON (KVOA) - The Old Pueblo has only seen one or two good days of Monsoon rain this summer.

As we are a month and a half away from the end of Monsoon, it is no secret that this year's Monsoon is more of a "nonsoon."

We had not had a lot of significant rainfall this summer, so what is going on? 

July and August are the two months of the year where Southern Arizona expects heavy rain and thunderstorms. These are also the months were we get one-third of our annual rainfall. But so far, we have only seen a little more than half an inch of rain.

News 4 Tucson Chief Meteorologist Matt Brode has seen some dry Monsoons over the years, but this year is one of the worst. 

"I can't remember really in all the years I've been here in the summers such a slow start to the Monsoon," Brode said. "That said, we still have seven and a half weeks or so. We could have a good surge at the end of August and we have all of September."

"We have had high pressure in favorable positions. The problem is when we've had that high pressure in the favorable positions we have not had a lot of moisture to our south."

So far to date, this is the driest monsoon on record. However, Brode said one good rain can fix all of it. 

"The west side of the City of Tucson, even at my house, 3.5 to 4 inches of rain that was within a 2 to 3 hour time period. That represents two-thirds of our annual Monsoon," he said. "So there you have it. All it does take his one good storm. The problem is we haven't had a lot of those storms evenly distributed."

The driest Monsoon ever was recorded 96 years ago in 1924. That year, Southern Arizona only saw 1.5 inches of rain.

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Daniel McFarland

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