Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 427 AM EDT Tue Jun 06 2017 Valid 12Z Tue Jun 06 2017 - 12Z Thu Jun 08 2017 ...Unsettled weather in much of the eastern U.S. will gradually move out to sea over the next few days... ...Significant rain is expected to reach the West Coast by Thursday morning... Much of the active weather associated with an unusual evolution of the synoptic pattern over the eastern U.S. will gradually move off the coast during the next few days, while the western U.S. will get into the action by Thursday morning. First of all, a highly amplified upper-level trough is forecast to evolve into a closed low over the northeastern U.S. This trough has brought unsettled weather over much of the eastern U.S. for the last couple of days along with very cool temperatures for early June. A low pressure center is intensifying rapidly as it moves off the mid-Atlantic coast, taking much of the showers and thunderstorms offshore. However, residual showers will continue over New England today before gradually tapering off tonight. Farther south, tropical moisture interacting with an upper-level trough continues to bring widespread showers and thunderstorms across the Deep South into the Southeast as well as Florida. Cooler and drier air associated with the large upper-level low over the northeastern U.S. will begin to push the showers and thunderstorms offshore as an elongated low pressure system is forecast to move off the Carolina coast by Thursday morning. Out West, drier weather and warmer temperatures are expected for much of the interior sections today and tomorrow. However, by Thursday morning, a cold front from the eastern Pacific is expected to bring significant rainfall from the Pacific Northwest down to northern California. Elsewhere, a front moving across the northern and central Plains is forecast to weaken. Showers and thunderstorms associated with the front from the Plains into parts of the Rockies are expected to gradually become more widely scattered over the next couple of days. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php