Weather Outlook

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Date & Time: 10/18/2017 8:05 AM MST

Forecaster: Henz, D.

Synopsis:

Getting tired of our mid-October heat? Some relief is on the way with changes to the weather pattern beginning today. Our early week ridge of high pressure has flattened out with more zonal flow aloft now in place. A weak Pacific disturbance will move east across the Desert Southwest later today into Thursday morning bringing additional cloud cover and perhaps some light showers/sprinkles to southcentral AZ. Following this system, general troughing will develop across the Western U.S. lending to a welcomed cool down (upper 80s to low 90s) and breezy conditions Friday into the upcoming weekend.

For today plan on partly sunny skies mixed with periods of thicker clouds and possibly a few light showers. Afternoon temperatures will warm into the 93˚F-96˚F range around the Valley with low 90s across the foothill locales. Variable winds will remain in the 2-6mph range with no gusts of any consequence throughout the day. Overnight low temperatures will dip into the low 70s around the urban corridor under overcast skies.

For tomorrow morning plan on lingering cloud cover and perhaps some light showers through the morning commute before rapidly clearing conditions into the afternoon. Daytime highs will reach the 92˚F-95˚F range around the Valley. Variable winds will generally remain in the 3-8mph range with localized evening gusts around 15mph. A welcomed cooling trend will arrive on Friday and continue into the weekend along with increased breezes. Highs on Friday will dip to around 91˚F before falling into the upper 80s on Saturday. More details on this in tomorrow’s extended Outlook.

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