Arizona weather forecast: Phoenix heat wave extends through Aug. 28

PHOENIX - After a brief break from the 110s, temperatures will heat up with our extreme heat warnings now extended through next week. It was a record-breaking start to the weekend with extreme heat lasting through next week. 

This Weekend:

Sunday was a scorcher across the southern deserts. Phoenix hit a high of 113 degrees, coming one degree shy of tying the daily record high. The Valley was sunny, with unhealthy air quality at times.

Storms crossed northern Arizona Sunday afternoon, bringing rain to spots like Flagstaff and Sedona. Those storms will end by around 9 p.m. There are severe storms Sunday evening in the Tucson area, and these may produce an outflow boundary that could cause a dust storm in Pinal and Maricopa Counties. There will also be a chance for scattered showers and thunderstorms through Monday morning. Storms may be capable of producing damaging wind gusts, lightning, heavy rain and flooding.

Phoenix hit a record-breaking high of 115 degrees on Saturday, shattering our 2011 record of 113 degrees. A large ridge of high pressure will dominate the region, extending extreme heat warnings through next Saturday. 

Storm activity was centered towards higher elevations with the Valley looking a slight chance for weak showers Saturday evening. 

Upcoming Week:

Monday morning will start partly cloudy with spotty showers in the Valley, central and northern Arizona. The Valley should clear as the day goes on, but the high country will see more scattered afternoon and evening storms.

Temperatures will drop to at or over 110 degrees for the next several days. The Valley will experience a major to extreme heat risk under the heatwave. There is an air quality alert in effect through the evening in Maricopa County.

The rest of the week will be drier in the Valley, but the high country will see isolated storms possible each day. Heat will be the big story this week. Extreme heat warnings have been extended until Saturday. Monday will be the coolest day of the week, with a high of 109. 

Temperatures will be even hotter the rest of the week, peaking around 113 to 115 Tuesday through Friday.

Big picture view:

Overnight lows will remain quite warm over the next couple of weeks, too. This combo of high afternoon temperatures and very warm overnights will lead to little relief for Phoenix.

The extreme heat warning has been extended for Phoenix, as well as portions of southwestern Arizona, through next Friday, Aug. 28.

Areas under the warning include Maricopa, Pinal, Pima and Graham counties. Temperatures under the warnings are looking to range from 106 to 115 degrees with lows ranging from 84 to 93 degrees. Daytime highs under the extreme heat are looking to either tie or be near record-breaking territory.

In the High Country, scattered shower and storm chances will continue through the weekend and early next week, particularly in the afternoons.

You can always check the latest weather conditions by visiting the FOX 10 Phoenix weather page, or download the Free FOX 10 Weather app, which is available on Apple iOS and Android.

Scroll down this page for satellite and radar, day planner, records, current temperatures, 10-day forecast, forecast highs, and recent rainfall totals, plus live video feeds.

The following heat safety information was provided by the Scottsdale Fire Department.

What are Heat Emergencies?

Heat Cramps: Profuse sweating, fatigue, extreme thirst, muscle cramps

Heat Exhaustion: Headache, dizziness, weakness, nausea/vomit, Cool/moist skin

Heat Stroke: Elevated temp. +103degrees, confusion/irrational behavior, dry/hot skin, rapid shallow breathing, rapid weak pulse (shock), seizures, unconscious

What to do

• Get person into shade or cool location.
• Cool person with cool, wet cloths (neck, groin, armpits, head) and fan body.
• Sip cool water if person is alert.
• For muscle cramps, massage muscles gently, but firmly until relaxed.
• *If symptoms worsen, call 911.

What not to do

• Do not give anything by mouth if person is vomiting, unable to swallow or unconscious.
• Do not underestimate the seriousness of a heat emergency.
• Prevention/Preparation for hike/exercise in heat.

Know your limitations

• Hydrate (begins day prior to hike/exercise, hour before hike, during and after).
• Wear proper clothing, lightweight and light color, protect head, proper shoes.
• Always carry a cell phone and best to hike with company.
• Always tell someone where you are hiking and when to plan to return.

Preventing heat exhaustion/heat stroke

The Arizona Department of Health Services stated the following precautions can be taken to prevent heat exhaustion or heat stroke:

• Stay in air-conditioned buildings.
• Find a cooling center/hydration station.
• Limit outdoor activity during the hottest part of the day (mid-day).
• Check on at-risk friends, family, and neighbors at least twice a day.
• Drink water before, during, and after working or exercising outside.
• Check the UV Index.
• Check the heat risk map.

Road Conditions

• Call 511 anywhere in Arizona or 1-888-411-ROAD (7623)

Rain/flood safety tips

The American Red Cross' tips for heavy rain situations and flood safety:

• Turn around don’t drown! If you must drive and you encounter a flooded roadway, turn around and go another way.
• If you are caught on a flooded road and waters are rising rapidly around you, get out of the car quickly and move to higher ground.
• Tune in to your local radio, NOAA radio, or news channels for the latest updates.
• If your neighborhood is prone to flooding, be prepared to evacuate quickly.
• Follow evacuation orders and do not attempt to return until officials say it is safe.
• If power lines are down, do not step in puddles or standing water.
• If power is out, use a flashlight. Do not use any open flame as alternate lighting.

 

Preparing for a severe thunderstorm 

The American Red Cross' tips for preparing for a severe thunderstorm:

• Put together an emergency kit.
• Know your community’s evacuation plan.
• Create a household disaster plan and practice it.
• Purchase a battery-powered or hand-crank radio
• Discuss thunderstorm safety with members of your household. Be aware that a thunderstorm could produce flooding.
• Pick a safe place in your home for household members to gather during a thunderstorm. This should be a place where there are no windows, skylights, or glass doors, which could be broken by strong winds or hail and cause damage or injury.

Be prepared and stay safe during the monsoon

"Most Valley residents know how quickly and furiously storms can move in and out, bringing strong winds, dust, rain, and flash flooding. These storms can cause interruptions in services, such as water, power, and gas," stated Captain Ashley Losch of the Glendale Fire Department.

GFD reminds residents of ways they can be prepared and stay safe:

• Have flashlights with extra batteries on hand.
• Have food that can be prepared without the need for cooking or refrigeration.
• Have at least one gallon of clean water for each person in the household.
• Have backup power for anyone requiring power for a medical device.
• Have backup power for cell phones that do not require charging.
• Have a first aid kit ready and accessible.
• Never drive into areas with flowing water; it takes less than 10 inches to wash a car away.
• Avoid flooded areas, such as washes.
• If waters are rising, seek higher ground.
• Do not approach downed power lines, the ground can be energized for up to 200 feet.
• Keep pets indoors during storms.

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