Why easterly winds shut down storms today - KVOA | KVOA.com | Tucson, Arizona

Why easterly winds shut down storms today

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TUCSON - The Sonoran Wind Machine's cranked up to wrap the week.

A strong dome of high pressure parked east of the Four Corners provides a windy Friday, according to 4WARN Meteorologist Jeff Beamish. Easterly wind gusts up to 30-40 MPH are possible through mid-afternoon as a Wind Advisory is in effect until 3 PM today. Daytime highs reach the 105-107° range in Metro Tucson.

These strong winds will shut down Monsoon storm chances today. Due to topography, east winds that develop across southeastern Arizona and southern New Mexico are downsloping winds. This downsloping component limits the needed energy for storms to form. It can also dry out the atmosphere.

Easterly winds up to 20 MPH continue Saturday. While a stray shower or storm can't be ruled out, much of southern Arizona stays dry to start the weekend. Expect these winds to weaken by Sunday.

As easterly winds decrease, rain chances rise. Ample Monsoon moisture and energy should spark scattered storms Sunday. The upcoming work week looks active for the Monsoon. Each day features scattered storm chances for Metro Tucson.

Watch Jeff for a complete look at your forecast today on News 4 Tucson at Noon. Follow Jeff's weather updates on FacebookTwitter and his blog.

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