Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 356 AM EDT Tue Apr 25 2017 Valid 12Z Tue Apr 25 2017 - 12Z Thu Apr 27 2017 ...Heavy rain possible over parts of New England Coast... ...Heavy rain possible over parts of the Upper Great Lakes and Middle Mississippi Valley... ...Heavy rain possible over parts of the Pacific Northwest/Northern California... Low pressure over the Carolinas will move northward to just south of Long Island New York by Wednesday. The system will produce showers and thunderstorms over parts of the Southern Mid-Atlantic that will move to coastal Southern New England by Wednesday morning and off the New England Coast by Wednesday evening. The storm will also produce rain over parts of the Northern Mid-Atlantic into parts of the Lower Great Lakes and Southern New England on Tuesday morning that will expand northward into Northern New England by Tuesday evening. The rain will end over the Lower Great Lakes by Wednesday morning and over the Northern Mid-Atlantic by Wednesday evening, while hanging on over the New England Coast by Wednesday evening, too. Meanwhile, a front extending from the Upper Great Lakes/Upper Mississippi Valley southwestward to the Southern High Plains and into the Southwest will move into the Upper Great Lakes southward to the Lower Mississippi Valley/Western Gulf Coast by Wednesday evening. The system will produce rain and snow over parts of the Upper Great Lakes/Upper Mississippi Valley through Tuesday evening. Overnight Tuesday, rain and snow will return to the Upper Mississippi Valley through Wednesday evening. In addition, some areas of rain/freezing rain will develop over parts of the Arrowhead of Minnesota and the western portion of the upper peninsula of Michigan on Wednesday into Wednesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php