Tuesday’s Tucson Forecast: Last call for Monsoon 2015

TODAY’S BEAMISH BLOGCAST

THE CLIFF NOTES

7DayForecast092215

Today – 30% chance of storms. 86°, west wind 10 MPH.

Tonight – Partly cloudy. 68°, southeast wind 5 MPH.

Tomorrow – Partly cloudy. 92°, west-northwest wind 5-10 MPH.

FORECAST DISCUSSION

HRRR092215

This afternoon likely marks Monsoon 2015’s swan song.

A low pressure trough interacts with ample moisture to develop scattered showers & storms today. Most of southern Arizona has a 30% chance of storms between late morning and early evening, with mountains standing a 40% chance of thunder. Highs reach the mid 80s in Tucson, running 6-8° below average.

Today’s Monsoon Prediction Index is 3 out of 10 for Tucson, indicating a low storm risk. Locally heavy rainfall can’t be ruled out in a few spots, but widespread flooding appears unlikely today.

High pressure begins to build over the southwest starting tomorrow. This feature dries out the atmosphere & returns highs to the low 90s. Temperatures make a run at triple digits Thursday through the weekend, with mostly sunny skies prevailing.

SKY CANDY OF THE DAY

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Storm structure in The Valley, captured near Ahwatukee Monday by Bryan Snider. Storms were more miss than hit in Phoenix yesterday, but produced some beautiful vertical structure.

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