Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 350 PM EDT Wed May 23 2018 Valid 00Z Thu May 24 2018 - 00Z Sat May 26 2018 ...Heavy rainfall possible across portions of the Southeast... ...Severe thunderstorms possible from the northern/central Plains to the Upper Mississippi Valley... Anomalous moisture streaming northward out of the Gulf of Mexico and the Caribbean will continue to interact with a weakening frontal boundary as it dips southward and eventually dissipates across the Deep South. As a result, expect mainly diurnally driven showers and thunderstorms to continue popping up from the lower Mississippi Valley to the Southeast/Florida and the southern Mid-Atlantic. While much of this activity should be widely scattered in nature, storms that do develop may contain moderate to heavy rainfall, especially tonight for portions of Georgia and Alabama near an area of low pressure. Unsettled weather should continue through the rest of the work week as weak pieces of energy sneak through within the flow aloft. Meanwhile, showers and thunderstorms will continue this evening and into tonight across the northern Intermountain West and into the northern/central Plains as an upper level low lifts slowly through the region. A developing cold front moving into the Plains tonight will provide a focus for showers and storms and conditions should be favorable to support a few strong to severe thunderstorms with locally heavy rainfall across the Plains tonight and into the Upper Mississippi Valley by Thursday. The Storm Prediction Center has highlighted both regions within a slight risk for severe weather. See products issued by that center for additional details. Wet weather again returns to northern California and Oregon by Thursday afternoon as a closed upper level low pushes into California. Locally heavy rainfall will be possible, particularly along the favored terrain. Temperatures across California will remain below normal as the upper low slides inland. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php