The National Weather Service issues wind chill advisories and warnings to alert the public of potential extreme temperatures. Learn more about the Wind Chill Index. Wind Chill Advisory. Wind chill index between -15Â°F and -24Â°F for at least three hours. Wind Chill Warning. Wind chill index below -25Â°F for at least three hours. What to do before extreme cold weather hits Be Informed by receiving alerts, warnings, and public safety information before, during, and after emergencies. Learn how to make a Family Emergency Plan that addresses the needs of your family and prepares your family to safely evacuate or shelter in place.
Virginia has plenty of whitewater rivers throughout its western mountain regions, such as the Clinch, Shenandoah and New Rivers, which afford river-running activities for paddlers of all levels of experience - from the novice to the expert.
The Potomac River runs 405 miles (652 km) from the Fairfax Stone in West Virginia on the Allegheny Plateau to Point Lookout, Maryland, and drains 14,679 square miles (38,020 km 2). The length of the river from the junction of its North and South Branches to Point Lookout is 302 miles (486 km).n terms of area, this makes the Potomac River the fourth largest river along the Atlantic coast of the United States and the 21st largest in the United States. Over 5 million people live within the Potomac watershed.