• Model predicts major atmospheric river for Pacific Northwest and Northern California

    The latest model guidance suggests a major atmospheric river could hit the Pacific Northwest and Northern California early next week, with the ECMWF EPS control member forecasting AR3-4 conditions from central Oregon to Northern California. Although timing and duration remain uncertain, 70% of EPS members predict AR4 or AR5 conditions in coastal southern Oregon, according to the Center for Western Weather and Water Extremes (CW3E).

  • Coastal storm prompts flood warnings in Virginia, U.S.

    Coastal Flood Warnings were issued for several counties in Virginia on Thursday, November 14, 2024, after the National Weather Service (NWS) warned of a coastal storm that will impact the region from Thursday into Friday, November 15 with up to 61 cm (2 feet) of flooding being expected in the affected areas.

  • Significant rain and snow event expected for Northern California and Pacific Northwest

    A strong Atmospheric River is set to bring significant low-elevation rain and high-elevation snow to the Pacific Northwest and Northern California beginning Tuesday evening, November 12, 2024. The system will continue moving eastward, impacting a wide swath of the western and central United States with varied precipitation, including rain, snow, and thunderstorms.

  • Edisto River crest breaks 1928 record, causing dam failures and damaging roads and bridges in Orangeburg, South Carolina

    A plume of moisture from Hurricane “Rafael” moved northward into the Southeastern United States and collided with a stationary front over South Carolina, causing intense rainfall in Orangeburg County on November 6 and 7, 2024. The extreme rainfall, totaling 180 – 380 mm (7 – 15 inches) in 24 hours, overwhelmed local ponds and dams, leading to failures that sent water downstream, damaging bridges and roads near Norway, South Carolina.

  • Pacific Northwest and Northern California brace for incoming atmospheric rivers

    Two atmospheric rivers are set to bring heavy rainfall and flood risks to the Pacific Northwest and Northern California from November 10 to November 14. The storms are expected to bring significant precipitation, with the heaviest rainfall forecast for the Olympic Peninsula and Cascade Mountains. The peak rainfall is predicted to occur between November 10 and November 13.

  • Impossible travel, near blizzard conditions, and historic snowfall totals expected in parts of New Mexico and Colorado

    A severe winter storm impacting parts of Colorado and New Mexico is expected to bring additional heavy snowfall on Friday, November 8, 2024. Parts of the area had already accumulated 25 – 50 cm (10 – 20 inches) of snow by Thursday night, November 7, prompting the Colorado governor to declare a disaster emergency for what could be Denver’s most severe snowstorm in 30 years. Snowfall rates of 2.5 – 5 cm per hour (1 – 2 inches per hour) are anticipated to continue across the region, with total snow accumulations forecast to reach 30 – 120 cm (1 – 4 feet) in some areas.