Tag: mst

Official

Air Quality Alert issued April 29 at 9:44AM MST by NWS Phoenix AZ

AQAPSR AEUS75 KPSR 291644 AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The
Official

Air Quality Alert issued April 29 at 9:30AM MST by NWS Phoenix AZ

AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment
Official

Air Quality Alert issued April 29 at 9:15AM MST by NWS Phoenix AZ

AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment
Official

Air Quality Alert issued April 29 at 10:21AM MST by NWS Phoenix AZ

AQAPSR The Arizona Department of Environmental Quality (ADEQ) has issued an Ozone High Pollution Advisory for the Phoenix Metro Area on Wednesday. This means that forecast weather conditions combined with existing ozone levels are expected to result in local maximum 8-hour ozone concentrations that pose a health risk. Adverse health effects increase as air quality deteriorates. Ozone is an air contaminant which can cause breathing difficulties for children, older adults, as well as persons with respiratory problems. A decrease in physical activity is recommended. You are urged to car pool, telecommute or use mass transit. The use of gasoline-powered equipment
Official

Red Flag Warning issued April 27 at 1:55AM MST until April 27 at 7:00PM MST by NWS Flagstaff AZ

MST Sun Apr 27 2025/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MST /11 AM MDT/ THIS MORNING TO 7 PM MST /8 PM MDT/ THIS EVENING FOR THE LITTLE COLORADO RIVER VALLEY, NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264, WHITE MOUNTAINS, CHUSKA MOUNTAINS, AND THE DEFIANCE PLATEAU... * AFFECTED AREA...Locations near Alpine, Buffalo Pass, Dilkon, Eagar-Springerville, Ganado, Holbrook, Kykotsmovi, Pinetop- Lakeside, Saint Johns, Show Low, Snowflake-Taylor, Tuba City, Whiteriver, Window Rock and Winslow. This includes portions of the Apache-Sitgreaves National Forest. * WINDS...Southwest 15 to 25 MPH with gusts up to 45 MPH. * RELATIVE HUMIDITY...As
Official

Red Flag Warning issued April 27 at 12:41AM MST until April 27 at 8:00PM MST by NWS Tucson AZ

* AFFECTED AREA...Fire Weather Zones 151, 152, 153 and 154 including the Sky Islands of Southeast Arizona, Cochise, Graham, Greenlee, Santa Cruz, and eastern portions of Pinal and Pima counties. * TIMING...From 10 AM this morning to 8 PM MST this evening. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...6 to 10 percent. * IMPACTS...Any fires that develop or are ongoing will have the potential to spread rapidly.
Official

Blowing Dust Advisory issued April 27 at 12:37AM MST until April 27 at 7:00PM MST by NWS Tucson AZ

* WHAT...Southwest winds between 15 to 25 mph with localized areas up to 30 mph and gusts to 40-45 mph will create areas of blowing dust reducing visibility to between one and three miles. Localized dust prone areas including near the Wilcox Playa and the Arizona and New Mexico state line along Interstate 10 may see reductions in visibility to between one-quarter and one-half mile in blowing dust. * WHERE...Eastern Cochise County below 5000 feet and Upper Gila River Valley. * WHEN...From 10 AM this morning to 7 PM MST this evening. * IMPACTS...Hazardous driving conditions due to reduced visibility.
Official

Wind Advisory issued April 27 at 3:11AM MST until April 27 at 7:00PM MST by NWS Flagstaff AZ

* WHAT...Southwest winds 20 to 30 mph with gusts 40 to 50 mph. The strong winds will develop early this morning from Show Low to Springerville and then spread northward to St Johns, Winslow, and Holbrook after 9 AM MST. * WHERE...Little Colorado River Valley in Apache County, Little Colorado River Valley in Navajo County, and White Mountains. * WHEN...Until 7 PM MST /8 PM MDT/ this evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles.
Official

Air Quality Alert issued April 25 at 7:19AM MST by NWS Phoenix AZ

* WHAT...The Imperial County APCD has issued an air quality alert due to harmful levels of particle pollution from windblown dust. * WHERE...Within the western portions of Imperial County. Levels of particle pollution can vary by time and location depending on emissions and local weather conditions. * WHEN...Today through Saturday, April 26, 2025. * IMPACTS... Particle pollution can get deep into the lungs and cause serious health problems such as asthma attacks, heart and lung disease symptoms, and increased risk of lung infections. Everyone can be affected, but sensitive groups such as people with lung or heart disease, older adults
Official

Red Flag Warning issued April 26 at 1:53AM MST until April 27 at 7:00PM MST by NWS Flagstaff AZ

MST Sat Apr 26 2025/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MST /11 AM MDT/ THIS MORNING TO 7 PM MST /8 PM MDT/ THIS EVENING FOR THE LITTLE COLORADO RIVER VALLEY, NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264, WHITE MOUNTAINS, CHUSKA MOUNTAINS, AND THE DEFIANCE PLATEAU... ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MST /11 AM MDT/ TO 7 PM MST /8 PM MDT/ SUNDAY FOR THE LITTLE COLORADO RIVER VALLEY, NORTHEAST PLATEAUS AND MESAS SOUTH OF HWY 264, WHITE MOUNTAINS, CHUSKA MOUNTAINS, AND THE DEFIANCE PLATEAU... * AFFECTED AREA...Locations near Alpine, Buffalo