• Flash-flood risk rises in Southern California, severe storms threaten Arizona

    Heavy rain and severe thunderstorms are forecast across the U.S. Southwest from October 21 into October 23, 2026, as a deep Pacific low draws tropical moisture inland. The Weather Prediction Center (WPC) placed parts of Southern California and the Southwest under a Slight Risk of excessive rainfall for October 21, while the Storm Prediction Center (SPC) placed parts of central and eastern Arizona under a separate Slight Risk of severe thunderstorms.

  • Hurricane Polo and remnants of Odalys bring heavy rain and flash flood risk across the Four Corners region, U.S.

    Heavy rain is forecast across the Four Corners region through 05:00 PT (12:00 UTC) on September 30, with 50–100 mm (2–4 inches) expected across much of eastern Arizona, western New Mexico, and the San Juan Mountains of southwestern Colorado. Moderate Risk excessive-rainfall outlooks, level 3 of 4, cover much of Arizona and New Mexico and parts of southern Utah and southern Colorado, corresponding to a ≥40% probability of flash flooding.

  • Flash flooding kills 3 near Newcomb on Navajo Nation, New Mexico

    Two adults and a juvenile drowned after being swept away by floodwaters near Newcomb, New Mexico, early on September 16, 2026. The deaths occurred amid a Navajo Nation-wide state of emergency for severe monsoon storms, flash flooding and storm-related damage to roads and infrastructure.

  • Heavy rain raises flash-flood risk across Arizona burn scars, slot canyons and saturated ground

    Heavy rainfall and repeated thunderstorms are raising the flash-flood threat across Arizona on September 16, 2026, with the Weather Prediction Center (WPC) placing parts of southern and central Arizona under a Moderate Risk of excessive rainfall. Flood Watches cover much of the state, while National Weather Service (NWS) offices warn that burn scars, slot canyons, and already saturated ground require particular attention during periods of heavy rainfall.

  • Extreme Heat Warnings and Heat Advisories issued from the Central Plains to the Southwest U.S.

    Extreme Heat Warnings and Heat Advisories were issued across parts of the central and southern United States, the Southwest and California on September 8, 2026. The National Weather Service (NWS) forecast heat index values up to 44°C (112°F) in parts of Arkansas and Oklahoma and temperatures up to 47°C (116°F) in Death Valley and the Colorado River Valley, with several western alerts continuing through September 11.

  • Grand Canyon flash flood leaves at least two dead, forces Stage 4 water restrictions, Arizona

    Two people died and one remained unaccounted for after flash flooding struck Bright Angel Canyon and the Phantom Ranch area of Grand Canyon National Park, Arizona, on August 29, 2026. About 80 people were rescued, while the National Park Service said approximately 40% of the Transcanyon Waterline was damaged or destroyed, leaving it non-operational and prompting Stage 4 water restrictions on the South Rim.

  • More than 60 airlifted, 15 missing after Grand Canyon flash flood, Arizona

    More than 60 people were airlifted and approximately 15 remained missing or unaccounted for after flash flooding struck Bright Angel Canyon and the Phantom Ranch area of Grand Canyon National Park, Arizona, on August 29, 2026. The body of a 46-year-old man was recovered near Crystal Rapids on August 30, but authorities had not confirmed whether his death was connected to the flooding.

  • Dust-storm warnings cover sections of I-10 and state routes in southern Arizona

    Two walls of dust crossed southern Arizona late on August 5 and early on August 6, 2026, reducing visibility to approximately 400 m (0.25 miles) across parts of Pima and Pinal counties. Winds above 97 km/h (60 mph) accompanied the stronger wall in central Pima County, creating dangerous travel conditions along several state highways and sections of Interstate 10.

  • Extreme Heat Warnings issued for parts of Arizona, California and Nevada, temperatures above 49°C (120°F) forecast

    Extreme Heat Warnings have been issued across large parts of Arizona, California, and Nevada as a prolonged heat event is forecast to persist through at least Monday, July 27, 2026. Afternoon temperatures are expected to reach 38 to above 49°C (100 to more than 120°F), while exceptionally warm overnight lows are forecast to provide little relief, significantly increasing the risk of heat-related illness.