Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 415 PM EDT Thu Jun 01 2017 Valid 00Z Fri Jun 02 2017 - 00Z Sun Jun 04 2017 ...There is a slight risk of severe thunderstorms over parts of the Maine Coast... ...Heavy rain possible for parts of Western Texas... An upper-level low over Eastern Canada will slowly move eastward to Northern New England on Friday into Saturday. Showers and thunderstorms over Maine will come to an end by early Thursday night. Additionally, moisture trapped under the upper-level low and diurnal heating will aid in producing late afternoon into late evening rain showers over parts of the Northeast on Friday into Saturday. Another upper-level low over Northwestern Mexico will move northeastward to the Southern Plains on Friday into Saturday as additional upper-level energy will move over the Eastern Gulf Coast. Moisture from the Gulf of Mexico will flow over the Southern Plains eastward to the Southeast will aid in the development of showers and thunderstorms over the region through Saturday. The maximum areal coverage of thunderstorms will be during the late afternoon into late evening hours on Friday into Saturday. Meanwhile, a front over the Northern High Plains into the Great Basin will slowly move eastward to the Upper Mississippi Valley to the Central High Plains by Saturday. Showers and thunderstorms will develop over parts of the Northern Intermountain Region/Northern Rockies to parts of the Great Basin/Central Rockies will move eastward to the Upper Mississippi Valley and parts of the Upper Great Lakes into Central Plains/Middle Mississippi Valley by Saturday. Weak onshore flow along the Pacific Northwest will produce rain over the area through Friday evening when upper-level ridging will move over the Northwest. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php