Short Range Forecast Discussion...amended NWS Weather Prediction Center College Park MD 940 PM EDT Wed Aug 13 2014 Valid 12Z Thu Aug 14 2014 - 12Z Sat Aug 16 2014 ...Heavy rain continues to threaten New England on Wednesday... ...Showers and thunderstorms with flash flooding potential to impact the Desert Southwest... The upper level low driving the frontal boundary northward across New England on Wednesday will continue to deliver copious amounts of rain to the region. Considering the impressive rainfall rates that were seen on Tuesday through the Mid-Atlantic and portions of the Northeast, flash flooding cannot be ruled out for New England from tonight into Thursday morning. The surface low begins to exit Maine by Thursday evening and the heavier activity will taper off as a result. In the wake of the system's cold front, lower humidities will follow and will make for pleasant conditions for the Northeast and Mid-Atlantic over the next few days. The frontal boundary that has exited off the East Coast will stall across the Southeast. This will fire off daytime showers and thunderstorms over the next couple of days especially in the Deep South and Florida. Some thunderstorms could be seen along the Texas coastline through Thursday morning. Monsoon moisture will continue to set off scattered convection in the Desert Southwest. With plenty of instability and moisture for the atmosphere to tap, flash flooding is a potential threat. The Pacific Northwest and portions of the Intermountain West could also see scattered showers and thunderstorms through Friday as a relatively strong upper level low moves across these regions from Wednesday into Thursday. Fanning Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php