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    Long Range Weather Forecast Discussion April 22-May 6

    11530 PM EDT Fri. Apr. 19, 2024

    Apr. 22-26: A ridge is forecast in the West with a trough in the East. A trough will develop in the West late.

    A front and its upper trough will cross the Southeast U.S. with a second trough amplifying over the Great Lakes and the Northeast. This will send a strong cold front across the East. The front will cause light to moderate rain Monday into Tuesday. The system will be followed by a cold high-pressure system. The next trough is expected to develop over the West late in the week. This system will bring light rain and mountain snow to the Northwest by Wednesday. The trough will help in developing a surface low over the western Plains late in the week. This system will bring widespread rain and storms to the Plains by the end of the week.

    Apr. 27-May 1: The eastern trough lifts out followed by rising heights. A trough is forecast in the West.

    TEMPERATURES

    Below-normal temperatures are forecast for the West Coast. Anomalies of 2-4°F are expected. Above normal temperatures are forecast for most of the Rockies, into the Midwest, the Ohio and Tennessee Valleys, and most of the Southeast. Anomalies could be near 8°F.

    Untitled 1

    Yellow-2-4°F

    Orange-4-6°F

    Red-6-8°F or Greater

    Light Blue 2-4F Below

    Mediam Blue 4-6F Below

    Dark Blue-6-8F or Great Below

    PRECIPITATION

    Untitled 2

    Yellow=-35% Below

    Brown-35-45% Below

    Dark Brown-45-55% Below

    Light Green-30-35% Above

    Green-35-45% Above

    Dark Green-45-55%Above

    Above-normal precipitation is forecast for most of the Plains to the Pacific Coast. The probability of occurrence is nearly 40 percent. Below-normal precipitation is forecast for the Southeast, the Ohio and Tennessee Valleys, the Mid-Atlantic, and the Northeast. The probability of occurrence is nearly 35 percent.

    May 2-6: A trough is forecast in the West with above-normal heights across much of Canada and the East.

    TEMPERATURES

     Untitled 1

    Yeloow-2-4°F

    Orange-4-6°F

    Red-6-8°F or Greater

    Light Blue 2-4F Below

    Medium Blue-4-6F Below

    Dark Blue-6-8F or Great Below

    Little change is expected in the temperature anomalies from the previous period.

    PRECIPITATION

     Untitled 2

    Yellow=-35% Below

    Brown-35-45% Below

    Dark Brown-45-55% Below

    Light Green-30-35% Above

    Green-35-45% Above

    Dark Green-45-55%Above

    Below-normal precipitation is forecast from the eastern Plains to the Atlantic Coast. The probability of occurrence is nearly 35 percent.

    Jim Munley, Jr.
    http://www.jimmunleywx.com


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