Tucson, AZ Weather Alerts

The Arizona Department of Environmental Quality (ADEQ) has issued an
Ozone (OZ) High Pollution Advisory for the Tucson Metro area Friday.

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 should be reduced or done late
in the day.

For details on this High Pollution Advisory, visit the ADEQ internet
site at www.azdeq.gov/forecast/tucson or call 602-771-2300.

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...A portion of Southeast Arizona, including the following
areas, Baboquivari Mountains, Catalina and Rincon Mountains,
Dragoon and Mule and Huachuca and Santa Rita Mountains, South
Central Pinal County, Southeast Pinal County, Tohono O'odham
Nation, Tucson Metro Area, Upper San Pedro River Valley and Upper
Santa Cruz River Valley/Altar Valley.

* WHEN...From this afternoon through this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas. Low-water
crossings may be flooded.

* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood

* WHAT...Strong and gusty thunderstorm outflows are expected to
produce blowing dust today, possibly developing into a haboob.
Outflows will move west and northwest across portions of Pima and
southeast Pinal counties. Visibility between one-quarter and one
mile in blowing dust expected.

* WHERE...Catalina and Rincon Mountains, South Central Pinal County,
Southeast Pinal County, Tohono O'odham Nation, and Tucson Metro
Area.

* WHEN...From 3 PM this afternoon to 10 PM MST this evening.

* IMPACTS...Blowing dust can restrict visibilities below a mile
posing a significant hazard to motorists. In addition, strong and
gusty winds will likely suspend dust into the air that people and
animals breathe. Individuals with heart disease and respiratory
sensitivities may want to reduce their level of exertion to limit
the dust they breathe into their lungs, especially if they are
near dust prone locations. Those most at risk may feel better if
they avoid outside exercise today, keeping windows and doors
closed to help reduce exposure.

* WHAT...For the Excessive Heat Warning, Dangerously hot conditions
with temperatures ranging from 106 to 113. For the Blowing Dust
Advisory, visibility between one-quarter and one mile in blowing
dust expected due to thunderstorm outflows.

* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, and Tucson Metro Area.

* WHEN...For the Excessive Heat Warning, from 10 AM this morning to
8 PM MST this evening. For the Blowing Dust Advisory, from 3 PM
this afternoon to 8 PM MST this evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Hazardous driving conditions due to reduced
visibility.

* WHAT...For the Excessive Heat Warning, Dangerously hot conditions
with temperatures ranging from 106 to 113. For the Blowing Dust
Advisory, visibility between one-quarter and one mile in blowing
dust expected due to thunderstorm outflows.

* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, and Tucson Metro Area.

* WHEN...For the Excessive Heat Warning, from 10 AM this morning to
8 PM MST this evening. For the Blowing Dust Advisory, from 3 PM
this afternoon to 8 PM MST this evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Hazardous driving conditions due to reduced
visibility.

* WHAT...For the Excessive Heat Warning and Excessive Heat Watch,
dangerously hot conditions with temperatures 105 to 110.

* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, and Western Pima County.

* WHEN...For the Excessive Heat Warning, until 8 PM MST this
evening. For the Excessive Heat Watch, from Saturday morning
through Sunday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* WHAT...For the Excessive Heat Warning and Excessive Heat Watch,
dangerously hot conditions with temperatures 105 to 110.

* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, and Western Pima County.

* WHEN...For the Excessive Heat Warning, until 8 PM MST this
evening. For the Excessive Heat Watch, from Saturday morning
through Sunday evening.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

The National Weather Service in Tucson has issued a Fire Weather
Watch, which is in effect from Sunday morning through Sunday
evening.

* AFFECTED AREA...Fire Weather Zones 150, 151, 152, 153 and 154.

* TIMING...11 am to 7 pm MST Sunday.

* WINDS...20-foot southwest winds of 20 to 30 mph and gusts to
40-45 mph.

* RELATIVE HUMIDITY...lowering to 6-14 percent in the lower
elevations and 10-17 percent in the mountains.

* IMPACTS...Any fires that develop or are ongoing will have the
potential to spread rapidly.

* FOR A DETAILED VIEW OF THE HAZARD AREA...Visit
weather.gov/Tucson and click on the Detailed Hazards Icon.

* WHAT...Southwest winds 25 to 35 mph with gusts up to 50 mph
expected.

* WHERE...Much of southeastern Arizona.

* WHEN...From 8 AM to 9 PM MST Friday.

* IMPACTS...Gusty winds could blow around unsecured objects.
Tree limbs could be blown down and a few power outages may
result.

* ADDITIONAL DETAILS...Areas of blowing dust may reduce
visibility, especially along I-10 east of Tucson.

* WHAT...Southwest winds 25 to 35 mph with gusts 40 to 45 mph
expected.

* WHERE...Most of Southeast Arizona.

* WHEN...From noon today to 10 PM MST this evening.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.