Moderate

Possible threat to life or property

Illinois, Indiana Dense Fog Advisory | Effective 04/17/2026 04:01

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Illinois, DuPage, Kane, Lake IL, McHenry, and Northern<br /> Cook Counties. In Indiana, Porter County. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Instruction:<br /> If driving, slow down, use your headlights, and leave plenty of<br /> distance ahead of you.

Ohio Special Weather Statement | Effective 04/17/2026 03:48

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> Areas of fog have developed across northern Ohio this morning.<br /> Some of this fog may be locally dense with visibility as low as<br /> one-quarter of a mile. Conditions are expected to improve later<br /> this morning. If driving, use your headlights, allow extra time to reach your<br /> destination, give extra distance between you and the car in front<br /> of you, and be prepared for rapid changes to visibility. Instruction:

North Dakota Winter Weather Advisory | Effective 04/17/2026 03:50

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Snow expected. Total snow accumulations up to two inches<br /> with locally higher amounts to 4 inches. A light glaze of ice is<br /> also possible. * WHERE...Burleigh, Kidder, Sheridan, and Wells Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Plan on slippery road conditions. The hazardous<br /> conditions will impact the early Friday morning commute. Instruction:<br /> Slow down and use caution while traveling. The latest road conditions<br />

North Dakota Winter Weather Advisory | Effective 04/17/2026 03:50

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Mixed precipitation expected. Total snow and sleet<br /> accumulations up to one inch. Ice accumulations of a light glaze to<br /> five hundredths of an inch. Winds gusting as high as 35 mph. * WHERE...Foster and Stutsman Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Plan on slippery road conditions. The hazardous<br /> conditions will impact the early Friday morning commute. Instruction:<br />

Arizona, California Wind Advisory | Effective 04/17/2026 03:02

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...North winds 20 to 30 mph with gusts 40 to 50 mph expected. * WHERE...Western portion of Joshua Tree National Park, Eastern<br /> portion of Joshua Tree National Park, Southeastern Imperial<br /> County, Parker Valley, Chuckwalla Mountains, Chiriaco Summit, Palo<br /> Verde Valley, and Chuckwalla Valley. * WHEN...Until 1 PM MST /1 PM PDT/ this afternoon. * IMPACTS...Difficult driving conditions, especially for larger<br />

Colorado Freeze Warning | Effective 04/17/2026 03:13

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Prolonged sub-freezing temperatures dropping down into the<br /> 18 to 24 degree range. * WHERE...All of the Front Range Urban Corridor and northeast plains<br /> of Colorado. * WHEN...From 8 PM this evening to 8 AM MDT Saturday. * IMPACTS...If not drained or protected, damage to above ground<br /> irrigation lines will be likely. A hard freeze could kill sensitive<br /> vegetation and damage fruit trees. Instruction:<br /> Disconnect water hoses.

Colorado Winter Weather Advisory | Effective 04/17/2026 03:15

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Snow expected. Total snow accumulations of 2 to 7 inches.<br /> Winds gusting as high as 45 mph. * WHERE...The Mountains of Summit County, the Mosquito Range, and the<br /> Indian Peaks, and The Southern Front Range Foothills. * WHEN...From 9 AM this morning to 5 PM MDT this afternoon. * IMPACTS...Roads will become slippery in spots, especially through<br /> mountain passes. Use caution when traveling. The hazardous<br /> conditions will impact this mornings commute.

Colorado Winter Weather Advisory | Effective 04/17/2026 03:15

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Snow expected. Total snow accumulations between 3 and 9<br /> inches. Winds gusting as high as 45 mph. * WHERE...Rabbit Ears Pass, and Rocky Mountain National Park and the<br /> Medicine Bow Range. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Roads will become slippery in spots, especially through<br /> mountain passes. Use caution when traveling. The hazardous<br /> conditions will impact the this mornings commute. Instruction:<br />

California Wind Advisory | Effective 04/17/2026 02:56

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Northeast winds 25 to 35 mph with gusts up to 55 mph<br /> expected. Local gusts to 65 mph. * WHERE...Eastern San Gabriel Mountains and Western San Gabriel<br /> Mountains and Highway 14 Corridor. * WHEN...Until 2 PM PDT this afternoon. * IMPACTS...Gusty winds will blow around unsecured objects. Tree<br /> limbs could be blown down and a few power outages may result. Instruction:<br /> Winds this strong can make driving difficult, especially for high<br />

California Wind Advisory | Effective 04/17/2026 02:56

Public safety alert, emergency alert, and weather alert<br /> Description:<br /> * WHAT...Northeast winds 20 to 30 mph with gusts up to 50 mph<br /> expected. * WHERE...Calabasas and Agoura Hills, Central Ventura County<br /> Valleys, Santa Clarita Valley, Santa Susana Mountains,<br /> Southeastern Ventura County Valleys, Ventura County Beaches,<br /> Ventura County Inland Coast, Western San Fernando Valley, and<br /> Western Santa Monica Mountains Recreational Area. * WHEN...From 7 AM this morning to 2 PM PDT this afternoon.
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