Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 257 PM EST Tue Nov 21 2017 Valid 00Z Wed Nov 22 2017 - 00Z Fri Nov 24 2017 ...Heavy rain possible over the Pacific Northwest... ...Rain changing to snow over parts of the Lower Great Lakes... A front extending from the Lower Great Lakes roughly southwestward to the Lower Mississippi Valley/Southern Plains will move east and southward to off the Eastern Seaboard and off the Gulf Coast by Wednesday. An area of rain and snow over parts of the Great Lakes will move eastward into Northern New England by Wednesday evening and into Canada by late Wednesday night. More to Follow Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php