HEADS UP: A new visual warning system that uses red and green lights to alert pilots that they are flying in restricted airspace was to become operational May 21 around Washington.

Several commercial flights repeatedly received mid-air collision warnings near Washington DC last weekend – even though no other aircraft were in the area.

Washington's ShakeAlert earthquake early warning network will officially go live statewide on May 4, but won't be fully completed until 2025.

Additionally, a visual warning system is in place to alert non-compliant aircraft, using red and green lasers to illuminate cockpits and prompt immediate action from pilots.

National Park Service shuts Washington Monument due to extreme heat warning in DC area.

The system uses a network of electro-optical/infrared cameras, backed up by artificial intelligence, to supplement traditional radar-powered identification of aircraft near the American capital.

A bee swarm sparked alarm in Washington D.C. on Monday, with police issuing a warning for residents to avoid the area. Why It Matters The Centers for Disease Control and Prevention (CDC) says that ...

A quick-moving storm system is causing downed trees, power outages, and traffic impacts Friday evening in the D.C., Maryland and Virginia region.

General-aviation groups have expressed cautious approval of a laser-based visual warning system (VWS) to alert pilots that they have violated restricted airspace over Washington DC. Demonstration ...

Cellphone users from the U.S. border with Canada south to the border with Mexico should receive a mobile alert from the early warning system when an earthquake is detected.

WASHINGTON — The state of Hawaii boasts the largest outdoor warning system in the world, yet there's no indication any siren sounded, to alert people around the fires on Maui that they needed to ...