Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 155 AM EST Thu Nov 12 2015 Valid 12Z Thu Nov 12 2015 - 12Z Sat Nov 14 2015 ...Heavy rain possible over the Pacific Northwest and parts of the Northern Rockies... ...Heavy snow possible over the northern most Cascades and Northern Rockies... A storm over the Great Lakes will move eastward to the Canadian Maritimes by Friday evening. Rain with embedded thunderstorms will develop along and ahead of the associated front from the Great Lakes to parts of the Ohio and Tennessee Valleys to the Lower Mississippi Valley on Thursday morning into Thursday afternoon. By Thursday evening, the rain along the front will end while the rain will continue over Great Lakes eastward to the Northeast through Friday evening. Additionally, light snow will develop over parts of the Upper Great Lakes on Thursday. In addition, light rain will develop over parts of the southern tip of Florida through Friday. Meanwhile, onshore flow off the Pacific will stream moisture into the Pacific Northwest through Friday. The moisture will aid in developing rain over the Northwest Coast that will spread inland to parts of the Northern Rockies by Thursday evening. The snow levels will rise as the moisture pushes inland. Snow accumulations will be limited to the northern most Cascades and Northern Rockies through Friday. The rain will continue over Pacific Northwest into the Northern Rockies through Friday evening, too. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php