Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
121 AM PDT Tue Jun 17 2025
AZZ002-003-036-CAZ522>524-527-NVZ017-020-021-172100-
/O.CON.KVEF.XH.W.0004.250618T1700Z-250620T0500Z/
Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National
Recreation Area-Death Valley National Park-Western Mojave Desert-
Eastern Mojave Desert-San Bernardino County-Upper Colorado River
Valley-Western Clark and Southern Nye County-Las Vegas Valley-
Lake Mead National Recreation Area-
Including the cities of Golden Valley, Mountain Pass, Mitchell
Caverns, Las Vegas, Lake Havasu City, Boulder City, Furnace
Creek, Needles, Amargosa Valley, Yucca, Hoover Dam, Valentine,
Indian Springs, Henderson, Topock, Dolan Springs, Wikieup,
Bullhead City, Pahrump, Kingman, Stovepipe Wells, Daggett, Desert
Rock, Oatman, North Las Vegas, Mohave Valley, Barstow, Laughlin,
Fort Irwin, Baker, Shoshone, and Desert Hills
121 AM PDT Tue Jun 17 2025 /121 AM MST Tue Jun 17 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM PDT /10 AM
MST/ WEDNESDAY TO 10 PM PDT /10 PM MST/ THURSDAY...
* WHAT...Dangerously hot conditions. Expect high temperatures around
110 in Las Vegas, Pahrump, and Barstow, around 105 in Kingman, 110
to 115 in the Colorado River Valley, and around 120 at Furnace
Creek in Death Valley National Park. Overnight lows in the 80s in
Las Vegas and at the lower elevations along the Colorado River
will give little relief from the heat.
* WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort
Mohave, Northwest Deserts, Death Valley National Park, Western
Mojave Desert, Eastern Mojave Desert, San Bernardino County-Upper
Colorado River Valley, Western Clark and Southern Nye County, and
Las Vegas Valley.
* WHEN...From 10 AM PDT /10 AM MST/ Wednesday to 10 PM PDT /10 PM
MST/ Thursday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of water, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or late evening. Take action when you see symptoms of heat
exhaustion and heat stroke.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
For more information from the National Weather Service visit
http://weather.gov/lasvegas
AN
URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
1233 AM MST Tue Jun 17 2025
AZZ006-171545-
/O.CON.KFGZ.XH.W.0001.000000T0000Z-250621T0200Z/
Grand Canyon Country-
Including the cities of Supai, North Rim, and Grand Canyon
Village
1233 AM MST Tue Jun 17 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM MST FRIDAY
BELOW 4000 FEET...
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 102 degrees at Havasupai Gardens, to 114
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 7 PM MST Friday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This warning is reserved for only the hottest days of the year and
is issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1
1/2 miles from the upper trailhead. Between the hours of 10 AM and 4
PM, hikers should be out of the canyon or at Havasupai Gardens or
Bright Angel campgrounds, physical activity is discouraged. All
hikers should have adequate gear, including a wide-brimmed hat,
sunscreen, salty snacks, sufficient water, and electrolyte mix.
Doubling your calorie intake helps maintain your energy.
Hike smart.
&&
$$
Konieczny
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
103 PM MST Mon Jun 16 2025
AZZ534-538-539-547-552>556-559>562-171200-
/O.NEW.KPSR.XH.W.0002.250618T1700Z-250621T0300Z/
/O.CON.KPSR.XH.W.0001.000000T0000Z-250617T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Rio Verde/Salt River-
Superior-Northwest Pinal County-West Pinal County-Apache
Junction/Gold Canyon-Tonto Basin-Sonoran Desert Natl Monument-San
Carlos-Dripping Springs-Globe/Miami-
Including the cities of Wintersburg, Apache Junction, Punkin
Center, San Carlos, Globe, Florence, Tortilla Flat, Tonopah,
Aguila, Coolidge, Hassayampa, Gladden, Gila Bend, Sentinel,
Wickenburg, Arlington, Miami, Kaka, Casa Grande, Hayden,
Winkelman, Peridot, Cactus Forest, and Superior
103 PM MST Mon Jun 16 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS
EVENING...
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM WEDNESDAY TO 8 PM MST
FRIDAY...
* WHAT...For the first Extreme Heat Warning, dangerously hot
conditions. Afternoon temperatures 108 to 114. Major Heat Risk.
Overexposure can cause heat cramps and heat exhaustion to develop
and, without intervention, can lead to heat stroke. For the second
Extreme Heat Warning, dangerously hot conditions. Afternoon
temperatures 106 to 116 expected. Major Heat Risk. Overexposure
can cause heat cramps and heat exhaustion to develop and, without
intervention, can lead to heat stroke.
* WHERE...A portion of south central Arizona.
* WHEN...For the first Extreme Heat Warning, until 8 PM MST this
evening. For the second Extreme Heat Warning, from 10 AM Wednesday
to 8 PM MST Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
&&
$$
Heat Advisory
URGENT - WEATHER MESSAGE
National Weather Service San Diego CA
956 PM PDT Mon Jun 16 2025
CAZ048-050-056-058-171300-
/O.CON.KSGX.HT.Y.0002.000000T0000Z-250619T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-San
Diego County Valleys-Riverside County Mountains-San Diego County
Mountains-
Including the cities of San Bernardino, Poway, Santee, Julian,
Pine Valley, Corona, Moreno Valley, Riverside, El Cajon, San
Marcos, Rancho Cucamonga, Escondido, Fontana, and Ontario
956 PM PDT Mon Jun 16 2025
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...
* WHAT...Temperatures up to 96.
* WHERE...Riverside County Mountains, San Bernardino and Riverside
County Valleys-The Inland Empire, San Diego County Mountains, and
San Diego County Valleys.
* WHEN...Until 8 PM PDT Wednesday.
* IMPACTS...Hot temperatures may cause heat illnesses.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
&&
$$
Wind Advisory
URGENT - WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
929 PM PDT Mon Jun 16 2025
CAZ378-171600-
/O.EXB.KLOX.WI.Y.0060.250617T0500Z-250617T1600Z/
Interstate 5 Corridor-
Including the cities of Tejon Pass, Pyramid Lake, and Gorman
929 PM PDT Mon Jun 16 2025
...WIND ADVISORY IN EFFECT UNTIL 9 AM PDT TUESDAY...
* WHAT...Northwest to north winds 20 to 35 mph with gusts up to 50
mph expected.
* WHERE...Interstate 5 Corridor.
* WHEN...Until 9 AM PDT Tuesday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
&&
$$
Air Quality Alert
CAZ061-065-171500-
Coachella Valley-San Gorgonio Pass near Banning-
Including the cities of Indio, Palm Springs, Cathedral City,
Palm Desert, Palm Desert Country, La Quinta, and Coachella
359 PM PDT Sun Jun 15 2025
...AIR QUALITY ALERT DUE TO HARMFUL PARTICLE POLLUTION LEVELS FROM
WINDBLOWN DUST...
* WHAT...The South Coast AQMD has issued an air quality alert due to
harmful levels of particle pollution from windblown dust.
* WHERE...Coachella Valley. Levels of particle pollution can vary by
time and location depending on emissions and local weather
conditions.
* WHEN...until 8 AM Tuesday.
* 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, people who are pregnant, children, and
those who spend a lot of time outdoors are at greater risk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To protect your health, check air quality levels and act as needed:
* When Air Quality Index (AQI) levels are "Unhealthy for Sensitive
Groups" (orange), sensitive groups as specified above should
limit
extended or intense outdoor activity.
* When AQI is "Unhealthy" (red), everyone may experience health
impacts. Sensitive groups should avoid extended time outdoors.
* When AQI is "Very Unhealthy" (purple), sensitive groups should
avoid
all outdoor physical activity. Everyone else should avoid
extended
or intense outdoor activity.
* When AQI is "Hazardous" (maroon), everyone should avoid all
outdoor
physical activity.
* ADDITIONAL DETAILS...
To help keep indoor air clean when air quality is poor:
* Keep windows and doors closed
* Run your air conditioner and/or an air purifier
* Do not use whole house fans or swamp coolers that bring in
outside
air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, grilling, and gasoline-powered lawn and garden equipment
To help minimize outdoor particle pollution levels:
* Carpool, telecommute, reduce trips, or take public transportation
* Slow down if driving on dirt roads
* Stabilize loose soils
To view current and forecasted air quality levels, visit the South
Coast Air Quality Management District website at aqmd.gov or
download the mobile app at www.aqmd.gov/mobileapp. Additional
details for this air quality alert may be available at
www.aqmd.gov/advisory.
For the latest air quality forecasts and information, visit the
website at aqmd.gov.
$$
