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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 1919Z Oct 16, 2014)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 319 PM EDT Thu Oct 16 2014 Valid 00Z Fri Oct 17 2014 - 00Z Sun Oct 19 2014 ...Heavy rain over New England should come to an end by Friday morning... ...Rain expected to impact portions of the Northwest on Friday and into Saturday... A deep cyclone over the Lower Great Lakes will continue to move northward into Southeast Canada by Friday morning. Its associated surface cold front will continue to lift slowly northward, spreading moderate to heavy rain ahead of it through New England tonight. Given the heavy rain which has already fallen over this area, there is a slight risk for flash flooding, as highlighted by the WPC excessive rainfall outlook. By mid-morning on Friday, the front will clear Maine, and the rain should come to an end. Upstream from this, a few lingering showers could be possible across the Lower lakes and Central Appalachians this evening and overnight tonight underneath the actual upper-level center. Meanwhile, a second front behind this over the Northern Mississippi Valley will continue it's trek eastward towards the Ohio Valley tomorrow. While, in general, this system have very little moisture to work with, a few lake enhanced rain showers should not be ruled out on Friday across the Upper and Lower Great Lakes regions as the energy associated with this system interacts with the deep cyclone ahead of it. And finally, out west, another frontal system moving through the Eastern Pacific will begin to bring rain to parts of the Pacific Northwest overnight tonight. Initially, the heaviest and most organized of the rain will remain offshore, but this area may begin to impact portions of western Washington and coastal Oregon by early afternoon on Friday. Most of the moisture will be rung out as it crosses the higher terrain of Washington on Friday, but a few rain showers are possible farther east on Saturday, especially across favorable slopes of the northern Rockies. Monarski Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php