• Series of atmospheric rivers to bring heavy rain to Washington, Oregon, and northern California through early October

    A series of atmospheric rivers (AR) is forecast to hit the U.S. West Coast from late September through early October, beginning with a strong AR that made landfall over British Columbia on September 26, 2025. Forecasts show moderate AR conditions in Washington, Oregon, and northern California on September 28, followed by a stronger system making landfall on September 30 and potentially continuing into October 7.

  • Heavy to excessive monsoon rainfall forecast over the Desert Southwest, isolated flash flooding risk

    Heavy to excessive rainfall from monsoon thunderstorms may bring isolated flash and urban flooding to the Desert Southwest into Sunday, September 28, 2025. A plume of anomalously high monsoonal moisture streaming northward on the eastern flank of a slow-moving upper-level low will fuel several rounds of widespread showers and thunderstorms, with greatest impacts expected across southeastern Arizona and southwestern New Mexico.

  • Thunderstorms shift east bringing flood risk for New England and New York City area

    Widespread thunderstorms are forecast across the United States on Wednesday and Thursday, September 24 and 25, 2025, as a cold front advances eastward. The Weather Prediction Center (WPC) has issued a Slight Risk of Excessive Rainfall for parts of the Ohio and Tennessee Valleys, while isolated flash flooding is possible in southern New England and the New York City metropolitan area as storms reach the Northeast.

  • Severe thunderstorms with tornado risk forecast for eastern Oklahoma and western Arkansas

    The southern Plains and Ozarks face a severe weather outbreak on September 23, 2025, with the Storm Prediction Center warning of supercells capable of producing tornadoes, very large hail, and damaging winds from eastern Oklahoma and northeast Texas into western Arkansas. Storms are expected to intensify this afternoon and evening (local time), with tornado potential maximized across northeastern Oklahoma into western Arkansas.

  • Child found deceased after floodwaters sweep away vehicle in Barstow, California

    Flooding triggered by the remnants of Tropical Storm Mario caused the death of a 2-year-old in the city of Barstow, California, after he got swept away by the floodwaters on September 18, 2025. The fatality was confirmed by the police on September 19, after the body of the deceased was found in a flood control channel in the area.

  • Flash flooding prompts multiple rescues in Ruidoso, New Mexico

    Heavy rainfall associated with slow-moving thunderstorms affected the Sierra Blanca region of southern New Mexico on September 18, leading to rapid runoff and flash flooding in the Village of Ruidoso. The National Weather Service issued flash flood warnings as runoff rapidly filled the Rio Ruidoso and smaller drainages. The river crested at about 3.8 m…

  • Flood Watches in effect as post-tropical Mario drives moisture into the U.S. Southwest

    Moisture from post-tropical Mario is forecast to spread into southern California on September 18, 2025, bringing thunderstorms and rainfall totals of 25–75 mm (1–3 inches) through Friday. Rainfall rates may exceed 25 mm/h (1 inch/h), prompting Flood Watches and Flash Flood Watches across much of the region. Arizona and New Mexico are also expected to see widespread showers and thunderstorms with localized flooding into September 19.