A major western North American mountain range
The National Park Service has issued an extreme heat watch for the Grand Canyon’s inner canyon, predicting 105–110+ degree conditions at the bottom. Officials are urging hikers to avoid mid-day trails as several heat-related incidents have already occurred, with fatalities reported on Kaibab trails. Fire danger is rising nearby amid dry conditions.
The FAA has moved to replace its 1973 ban on overland supersonic flights with new, noise-based standards. Initial proposals could allow faster cross-country travel and reduce flight times, while NASA tests aim to refine how sonic booms are perceived. Final rules are targeted for mid-2027.
The Aspen Acres Fire has expanded overnight to about 105 square miles (272 square kilometers) with no containment. Colorado City and nearby towns have been evacuated. About 50 National Guard soldiers are assisting road checkpoints and water-scooping operations. Firefighters are racing to contain multiple blazes across the West amid ongoing drought and dry conditions.