Riverside County, CA
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Wednesday 07/22 10:00 AM PDT – Monday 07/27 8:00 PM PDT
Issued by NWS Phoenix AZ
What
Dangerously hot conditions possible. Afternoon temperatures 108 to 116. Major Heat Risk.
Where
Southwest Arizona and southeast California.
When
From 10 AM MST /10 AM PDT/ Wednesday to 8 PM MST /8 PM PDT/ Monday.
Impacts
Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.
What to Do
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.
Areas Impacted
- Parker Valley
- Yuma
- Imperial County Southwest
- Salton Sea
- Chuckwalla Mountains
- Imperial County Southeast
- Imperial County West
- Imperial Valley
- Chiriaco Summit
- Palo Verde Valley
- Chuckwalla Valley
Tips to Stay Safe
An Extreme Heat Warning means that extremely dangerous heat conditions are happening now or soon. You must take precautions to protect yourself and others from extreme heat.
- Stay inside in air conditioning if possible. If you don’t have air conditioning, go to a library, mall, or local cooling center.
- Drink plenty of water to stay hydrated, and wear loose, light-colored clothing.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
- Reschedule outdoor activities for a cooler day.
- If you must be outdoors, take longer and more frequent breaks in the shade or air conditioning, and avoid the hottest parts of the day.
- Bring pets indoors if possible. If pets are left outside, make sure they have shade and plenty of cool water.
- Make sure you know the signs of heat-related illness and how to respond.
In effect from Wednesday 07/22 10:00 AM PDT – Monday 07/27 8:00 PM PDT
Issued by NWS San Diego CA
What
Dangerously hot conditions with high temperatures of 112 to 117 and low temperatures in the mid 80s to mid 90s.
Where
Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning.
When
From 10 AM Wednesday to 8 PM PDT Monday.
Impacts
Heat related illnesses increase significantly during extreme heat events.
Additional Details
Major to locally Extreme HeatRisk. Elevated low temperatures will limit overnight relief from the heat.
What to Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Areas Impacted
- Coachella Valley
- San Diego County Deserts
- San Gorgonio Pass Near Banning
Tips to Stay Safe
An Extreme Heat Warning means that extremely dangerous heat conditions are happening now or soon. You must take precautions to protect yourself and others from extreme heat.
- Stay inside in air conditioning if possible. If you don’t have air conditioning, go to a library, mall, or local cooling center.
- Drink plenty of water to stay hydrated, and wear loose, light-colored clothing.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
- Reschedule outdoor activities for a cooler day.
- If you must be outdoors, take longer and more frequent breaks in the shade or air conditioning, and avoid the hottest parts of the day.
- Bring pets indoors if possible. If pets are left outside, make sure they have shade and plenty of cool water.
- Make sure you know the signs of heat-related illness and how to respond.
In effect from Wednesday 07/22 10:00 AM PDT – Monday 07/27 8:00 PM PDT
Issued by NWS San Diego CA
What
High temperatures in the mid 80s to mid 90s to around 100 for the inland San Diego County valleys with low temperatures in the mid 60s to lower 70s expected. Hottest conditions expected Thursday through Sunday.
Where
Orange County Inland Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills.
When
From 10 AM Wednesday to 8 PM PDT Monday.
Impacts
Hot temperatures may cause heat illnesses.
Additional Details
Widespread moderate HeatRisk with localized major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.
What to Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Areas Impacted
- San Diego County Inland Valleys
- Santa Ana Mountains and Foothills
- Orange County Inland
Tips to Stay Safe
A Heat Advisory means dangerous heat conditions are happening now or soon. Take action before, during and after the heat to stay safe.
- Stay in air-conditioned spaces if possible. Find cooling centers or places with AC in your community that you can go to, like libraries or shopping malls.
- Stay hydrated and stock up on clean drinking water to get you through multiple days of heat.
- Reschedule outdoor activities for cooler times of the day, and take breaks in the shade or air conditioning.
- Cover windows with curtains or shades, or use window reflectors designed to reflect heat back outside.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
Make sure you know the signs of heat-related illness and how to respond.
In effect from Wednesday 07/22 10:00 AM PDT – Monday 07/27 8:00 PM PDT
Issued by NWS San Diego CA
What
High temperatures as hot as the upper 90s to 108 and low temperatures as warm as the upper 60s to mid 70s. Hottest conditions expected Thursday through Sunday.
Where
San Bernardino and Riverside County Valleys-The Inland Empire.
When
From 10 AM Wednesday to 8 PM PDT Monday.
Impacts
Hot temperatures may cause heat illnesses.
Additional Details
Widespread moderate to localized major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.
What to Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Areas Impacted
- San Bernardino and Riverside County Valleys-The Inland Empire
Tips to Stay Safe
A Heat Advisory means dangerous heat conditions are happening now or soon. Take action before, during and after the heat to stay safe.
- Stay in air-conditioned spaces if possible. Find cooling centers or places with AC in your community that you can go to, like libraries or shopping malls.
- Stay hydrated and stock up on clean drinking water to get you through multiple days of heat.
- Reschedule outdoor activities for cooler times of the day, and take breaks in the shade or air conditioning.
- Cover windows with curtains or shades, or use window reflectors designed to reflect heat back outside.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
Make sure you know the signs of heat-related illness and how to respond.
In effect from Wednesday 07/22 10:00 AM PDT – Monday 07/27 8:00 PM PDT
Issued by NWS San Diego CA
What
High temperatures in the mid 80s to mid 90s below 6500 feet with low temperatures in the mid 60s to mid 70s expected.
Where
Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains.
When
From 10 AM Wednesday to 8 PM PDT Monday.
Impacts
Hot temperatures may cause heat illnesses.
Additional Details
Widespread moderate HeatRisk, with local areas of major HeatRisk on mountain foothills. Elevated low temperatures will limit overnight relief from the heat.
What to Do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Areas Impacted
- San Bernardino County Mountains
- Riverside County Mountains
- San Diego County Mountains
Tips to Stay Safe
A Heat Advisory means dangerous heat conditions are happening now or soon. Take action before, during and after the heat to stay safe.
- Stay in air-conditioned spaces if possible. Find cooling centers or places with AC in your community that you can go to, like libraries or shopping malls.
- Stay hydrated and stock up on clean drinking water to get you through multiple days of heat.
- Reschedule outdoor activities for cooler times of the day, and take breaks in the shade or air conditioning.
- Cover windows with curtains or shades, or use window reflectors designed to reflect heat back outside.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
Make sure you know the signs of heat-related illness and how to respond.
Briefings
From the Forecaster
Heat Hazards in Effect
Created by the NWS San Diego WFO
Extreme Heat Warning is in effect beginning at 10 AM Wednesday for the low deserts and 10 AM Thursday for the high desert. Heat Advisories go into effect at the same time for the Inland Empire, San Diego County valleys, Orange County inland areas, and mountain zones. These hazards will remain in effect through Monday of next week.
Tuesday Storm Outlook
Created by the NWS Phoenix WFO
Scattered thunderstorms will develop over the high terrain of southern Gila County this afternoon resulting in locally heavy rainfall and potential flooding. An outflow boundary will descend towards lower elevations in the evening potentially triggering new storms. There is a 10-25% of storms during the evening in the Phoenix Metro. The main concerns from storms will be gusty winds, local blowing dust, and heavy rain.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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