34°25'N / 117°38'O / Altitudine 1266 m / 05:07 16/03/2026, America/Los_Angeles (UTC-7)
Da: 16/03/2026, 00:04
A: 16/03/2026, 17:00
* WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...From Wednesday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Afternoon high temperatures between 103 and 109 degrees.
San Bernardino
An Extreme Heat Watch means that a period of very hot
temperatures, even by local standards, may 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.
NWS Phoenix AZ
16/03/2026, 00:04Da: 16/03/2026, 01:28
A: 16/03/2026, 15:00
* WHAT...For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 45 mph. For the Extreme Heat Watch, dangerously hot conditions with temperatures up to 106 possible. * WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort Mohave, and San Bernardino County-Upper Colorado River Valley. * WHEN...For the Lake Wind Advisory, until 8 PM PDT /8 PM MST/ this evening. For the Extreme Heat Watch, from Wednesday morning through Friday evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Heat related illnesses increase significantly during extreme heat events.
San BernardinoWinds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
Drink plenty of fluids, 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.
Monitor the latest forecasts and warnings for updates.NWS Las Vegas NV16/03/2026, 01:28Da: 16/03/2026, 01:28
A: 16/03/2026, 15:00
* WHAT...High temperatures in the Colorado River Valley and the lower elevations of Death Valley will top out in the 100 to 108 range. Temperatures in the lower elevations of San Bernardino County will top out in the 95 to 105 range with temperatures in the higher elevations topping out in the 90s. * WHERE...Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Morongo Basin, and Western Mojave Desert. * WHEN...From Wednesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San BernardinoDrink plenty of fluids, 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.
Monitor the latest forecasts and warnings for updates.NWS Las Vegas NV16/03/2026, 01:28Da: 16/03/2026, 02:43
A: 16/03/2026, 16:00
* WHAT...High temperatures in the lower to mid 90s below 4500 feet and in the 80s from 4500 to 6500 feet possible. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...From Thursday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.
San BernardinoDrink plenty of fluids, 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 evening. Take action when you see symptoms of heat exhaustion and
heat stroke.NWS San Diego CA16/03/2026, 02:43
Da: 16/03/2026, 01:28
A: 16/03/2026, 15:00
* WHAT...For the Lake Wind Advisory, north winds 15 to 25 mph with gusts up to 45 mph. For the Extreme Heat Watch, dangerously hot conditions with temperatures up to 106 possible. * WHERE...Lake Mead National Recreation Area, Lake Havasu and Fort Mohave, and San Bernardino County-Upper Colorado River Valley. * WHEN...For the Lake Wind Advisory, until 8 PM PDT /8 PM MST/ this evening. For the Extreme Heat Watch, from Wednesday morning through Friday evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Heat related illnesses increase significantly during extreme heat events.
San BernardinoWinds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
Drink plenty of fluids, 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.
Monitor the latest forecasts and warnings for updates.NWS Las Vegas NV16/03/2026, 01:28Da: 16/03/2026, 10:00
A: 16/03/2026, 16:00
* WHAT...High temperatures in the mid 80s to mid 90s for inland coastal areas to the mid 90s to 102 for the valleys are expected with the peak of the heat around Thursday. Hot conditions with temperatures 80 to 90 degrees near the coast and 95 to 105 inland. Hottest weather likely on Thursday and Friday. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...From 10 AM this morning to 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses.
San BernardinoDrink plenty of fluids, 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 evening. Take action when you see symptoms of heat exhaustion and
heat stroke.NWS San Diego CA16/03/2026, 02:43