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Weather and Climate

Palm trees blow in the wind during monsoon in Tucson.

Challenges with predicting the monsoon

Jul 26, 2019 A discussion with UA climatologist Michael Crimmins.
A heavy monsoon storm over the city of Tucson, 2017.

Monsoon finally settling in, with more rains to come

Jul 25, 2019 The next couple weeks could hold even more promise for summer moisture.
Rain clouds near Tubac, July 2019.

Weather patterns lining up for late-coming monsoon

Jul 17, 2019 The Weather Service has forecast thunder and rain storms each day this week.
The sun rises over the Rincon Mountains in this view from Mt. Bigelow

More deadly temperatures in Arizona's future

Jul 16, 2019 Climate change will bring more extreme heat in the coming decades.
A view of downtown Tucson as seen from Tumamoc Hill.

Summer's effect on air quality in Southern Arizona

Jul 1, 2019 A discussion with UA hydrologist Eric Betterton.
A man walking in downtown Tucson uses an umbrella to shade himself from the sun.

How rising temperatures impact public health

Jul 1, 2019 And what local municipalities can do to reduce hazards.
Firefighting gear hangs in the dock at Tucson Fire Station 3.

First responders discuss how to stay safe in the heat

Jul 1, 2019 Tucson Fire and Pima County's Search and Rescue Unit respond to dozens of cases each summer.
Satellite image of California's Camp Fire, Nov. 8, 2018.

Smoke from US wildfires boosting health risk for millions

Jun 26, 2019 Another summer of fires in the West is expected to impact millions and increase premature deaths.
Rescue crews during 2017 flooding from Hurricane Harvey in Texas

UA storm watchers predict active hurricane season

Jun 18, 2019 Annual forecast model shows Atlantic conditions similar to dangerous 2017.
Gary Turner uses his turf harvester to peel 2-by-5-foot strips grass at his Washington City farm. He says the land and the water rights are so valuable in this fast-growing area that he often gets offers for the property in the heart of Utah redrock country.

Utah presses forward with pipeline plans despite Colorado River Basin constraints

Jun 14, 2019 The pipeline would be like dipping a 140-mile straw into Lake Powell halfway across the state.
The Green River is a main branch of the Colorado River.

Dams could protect ranchers from climate change's drought, but could they also contribute to it?

Jun 13, 2019 Wyoming is moving forward on building or expanding several reservoirs on the Green River, a main branch of the Colorado River.
The highest temperature ever recorded in Tucson was 117 degrees, in 1990.

Heat warning remains in effect for Phoenix area

Jun 12, 2019 Tucson is outside the warning area but is also expected to remain hot.
Gross Reservoir is a key piece of Denver Water’s delivery system. A proposal to expand the dam that holds up the lake has galvanized opponents who live near it.

On stressed Colorado River, states test how many more diversions watershed can bear

Jun 12, 2019 The river is running short on water, and this is pushing some states to tap into every available drop before things get worse.
Lake Mead outside of Las Vegas.

Arizona plans for drought contingency plan impacts

Jun 10, 2019 Water managers are preparing for a future with less Colorado River water.
Wildland firefighters watch smoke from a wildfire.

Fire danger high in southeast Arizona this weekend

May 24, 2019 The National Weather Service has issued a fire weather watch.
Cold temperatures dusted Mount Lemmon with snow May 20, 2019.

Weather system brings 'unusual' temperatures to Tucson

May 20, 2019 The chilly weather also meant light snow, hail and freeze warnings in parts of state.

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