Storm Center: Weather Alerts: Warnings
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Other Weather Alerts
Type
Heat Warning
Special Weather Statement
Issued By
Issuing Time
Tue, 12 Aug 2025 20:47:15 PDT
Broadcast Time
Tue, 12 Aug 2025 20:47:15 PDT
Valid Until
Wed, 13 Aug 2025 12:47:15 PDT
Brief Description
Heat Warning
Detailed Description
Hot weather continues Maximum temperatures between 30 and 34 degrees Celsius, combined with high humidity, generate humidex values close to 40. In addition, nights will be warm, with minimum temperatures of 20 degrees Celsius or higher, providing little relief. Conditions will begin to improve during the day on Wednesday. More seasonal daytime highs and lower humidity are expected on Thursday. ### Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion. For more information: https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/how-protect-yourself.html https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/who-is-at-risk.html Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to QCstorm@ec.gc.ca or post reports on X using #QCStorm.
Region
Alert
Ohio
Severe Thunderstorm Warning (2)
Tennessee
Flash Flood Warning
Minnesota
Flood Warning (14)
South Dakota
Flood Warning
Kansas
Flood Warning (8)
Iowa
Flood Warning (4)
Georgia,Tennessee
Flood Warning (7)
North Carolina,South Carolina
Flood Warning (16)
Wisconsin
Flood Warning (15)
Alaska
Flood Warning (7)
Lake Erie
Special Marine Warning
Montana
Lakeshore Warning or Statement
Arizona,California,Nevada
Public Severe Weather Alert (19)
New York,Vermont
Public Severe Weather Alert (6)
Maine
Public Severe Weather Alert (3)
Oregon
Public Severe Weather Alert (9)
Arkansas,Louisiana,Mississippi
Public Severe Weather Alert (7)
Florida,Georgia
Public Severe Weather Alert (2)
North Carolina
Coastal Flood Warning, Watch, or Statement (2)
South Carolina
Coastal Flood Warning, Watch, or Statement (2)
Arizona
Coastal Flood Warning, Watch, or Statement
Ohio
Coastal Flood Warning, Watch, or Statement
Texas
Coastal Flood Warning, Watch, or Statement (2)
Kansas
Coastal Flood Warning, Watch, or Statement
Alaska
Flood Statement
North Carolina,Tennessee,Virginia
Special Weather Statement (2)
Ohio
Special Weather Statement
Montana
Special Weather Statement
California
Air Stagnation Advisory
Minnesota
Air Stagnation Advisory (4)
Colorado
Air Stagnation Advisory (4)
Washington
Air Stagnation Advisory
Texas
Air Stagnation Advisory
Connecticut
Air Stagnation Advisory (2)
Arizona,California,Nevada
Non Precipitation Warning, Watch, or Statement (33)
Montana
Non Precipitation Warning, Watch, or Statement (5)
Idaho
Non Precipitation Warning, Watch, or Statement (2)
Colorado
Non Precipitation Warning, Watch, or Statement (8)
Oregon
Non Precipitation Warning, Watch, or Statement (14)
Columbia River Bar,Coastal WA; Coastal CA; Coastal OR
Non Precipitation Warning, Watch, or Statement
Utah
Non Precipitation Warning, Watch, or Statement (4)
Washington
Non Precipitation Warning, Watch, or Statement (3)
Wyoming
Non Precipitation Warning, Watch, or Statement
Idaho
Red Flag Warning (4)
Montana
Red Flag Warning (3)
Wyoming
Red Flag Warning (7)
Washington
Red Flag Warning
Colorado
Red Flag Warning (3)
Utah
Red Flag Warning (2)
Oregon
Red Flag Warning (10)
Coastal California-Oregon
Marine Weather Statement (15)
Coastal Oregon
Marine Weather Statement (2)
Coastal Oregon-California
Marine Weather Statement
Alaska
Marine Weather Statement (6)
Coastal California
Marine Weather Statement
Alabama,Florida
Marine Weather Statement (3)
Alaska
River Statement
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