Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 424 PM EDT Thu Apr 04 2019 Valid 00Z Fri Apr 05 2019 - 00Z Sun Apr 07 2019 ...Heavy rain and severe weather expected through tonight for Louisiana... ...Rain moving across the eastern U.S. Friday with wintry weather for northern New England Friday night... ...More unsettled weather moving across the western U.S. into the weekend... ...Strong thunderstorms forecast to develop over Texas Friday night... A wave of a low pressure supported by an upper-level trough will promote heavy rain together with strong to severe thunderstorms through tonight over Louisiana, especially for locations near the Gulf coast. Moisture associated with this system will combine with another upper-level system to spread rain eastward across the Ohio Valley tonight, moving into much of the East Coast on Friday. In addition, mixed rain and snow will also be found farther north across the upper Midwest and the Great Lakes tonight, moving across northern New England on Friday. The precipitation should begin to gradually move off the East Coast on Saturday as a low pressure center is forecast to develop just off the North Carolina coast. This low should not have significant impacts on the weather across the Mid-Atlantic states other than pulling in drier air from the northwest Saturday evening with higher swells near the coast. An active weather pattern over the Northeast Pacific will continue to bring unsettled weather across a large portion of the western U.S. into the weekend. A couple of upper-level troughs, along with their associated fronts, will move into the western U.S. over the next couple of days. This will keep a good chance of rain along the West Coast through the weekend, as higher elevation snow and lower elevation rain spread across the Intermountain and Great Basin, followed by the northern and central Rockies Friday and Saturday. Meanwhile, an upper-level disturbance will push across northern Mexico on Friday, entering the southern Plains on Saturday. This will bring the next round of thunderstorms into the southern Plains, some of which can be severe over Texas on Saturday. Scattered thunderstorms are also expected to develop farther north over the northern and central Plains on Saturday as another cold front approaches from the north. Meanwhile, scattered thunderstorms can also be expected in the Southeast through the next couple of days due to a lingering a front. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php