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Weather and Climate

Looking east towards downtown Tucson from Tumamoc Hill. From January 2022.

Pima County Issues Ground-Level Ozone Advisory

Jul 14, 2022 Thursday marks the second consecutive day of an advisory.
Fire managers have restricted campfires in Arizona to limit the risk of human-caused fire following a wet winter.

Some fire restrictions ease ahead of the holiday weekend

Jul 1, 2022 Officials warn to always check restriction status before starting a fire.
Researchers say the smell of the monsoon is good for your health.

Arizonans benefit from the special scent of the monsoon

Jun 28, 2022 Scientists find evidence of health benefits in the desert rain.
Part of the Contreras Fire burning near the Kitt Peak Nationla Observatory on June 16, 2022.

Contreras Fire listed as 100% contained

Jun 24, 2022 Local management team will hand over control Saturday.
Experts say car batteries last for only three years in desert heat.

Southern Arizona heat takes annual toll on car batteries

Jun 13, 2022 Experts say motorists should plan to buy a new one every 3 years.

Hot Tucson weather expected to lead to season's first monsoon activity

Jun 9, 2022 Forecasters say southern Arizona will get most of the state's rainfall this season.
Water levels in Lake Powell are dipping dangerously close to "dead pool," at which point it becomes impossible to generate hydropower at the Glen Canyon dam. Experts think the reservoir could reach those levels within a year.

Hydropower customers could pay extra fees

May 26, 2022 Federal law requires fees be paid whether or not dams are generating power.
Snow hangs in Colorado's Elk Mountains in May 2022. The Colorado River gets the majority of its water from high-altitude snowpack, and climate scientists say it's likely that less water than normal will make it into rivers and streams.

For this summer's water forecast, climate experts are looking back to winter

May 16, 2022 Snow is the key to water in Arizona and other the Colorado River Basin states.
Water levels in Lake Powell are dipping dangerously close to "dead pool," at which point it becomes impossible to generate hydropower at the Glen Canyon dam. Experts think the reservoir could reach those levels within a year.

Colorado River basin give approval to proposed water cutbacks

Apr 22, 2022 The plan would cut flows to Arizona, Nevada and California by 480,000 acre-feet, enough water to supply more than half a million homes for a year.
Flaming Gorge Reservoir stores water in Wyoming and Utah.

Amid dropping water levels in Lake Powell, another ‘short-term fix’ is on the way

Apr 22, 2022 Upper Colorado River Basis states reach a deal.
A sprawling swath of the West is in drought, with more than 20 years of dryness in the Colorado River basin. Researchers say nearly every indicator of drought is heading in the wrong direction.

Drought to continue, NOAA says

Mar 17, 2022 Dryness and above average temperatures bring wildfire danger.
The H.Wilson Sundt Generating Station at 3950 E. Irvington Road is seen in this image from a Tucson Electric Power video on YouTube.

Tucson Electric Power plant emissions upgrade scheduled

Mar 16, 2022 Pima County seeks public comment on NOx reduction plan.
Tucson City Hall seen from El Presidio Plaza.

Tucson hires consulting firm to work on Climate Action Plan

Mar 7, 2022 The city will pay the firm $400,000
The Colorado River Basin continues to be sapped dry by increasing temperatures and diminished precipitation.

UN climate report says drought, earlier runoff will make water scarce this summer

Mar 2, 2022 A new report from the United Nations’ panel on climate change lays out a grim picture of the future.
The sun shines harshly behind a saguaro cactus.

Last year was fifth-warmest recorded in Tucson

Jan 4, 2022 Each month was among the warmest in Tucson history except for July, when there was heavy rainfall during the monsoon season.
Clouds and rainbow over Tucson during 2021 monsoon.

Arizona sees wet, windy weather with rain, snow

Dec 24, 2021 Holiday travel impacted by rain and snow

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