Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 420 AM EDT Sun Sep 01 2019 Valid 12Z Sun Sep 01 2019 - 12Z Tue Sep 03 2019 ...Hurricane Dorian packing 150mph winds could bring tropical-storm-force winds to the central portion of the east coast of Florida by Monday night or Tuesday morning... ...Excessive heat continues into Sunday across portions of the Southwest... ...Record-breaking heat across portions of the central Rockies and High Plains through Labor Day... ...Elevated fire weather conditions expected across portions of the northern Rockies on Monday... The upper-level pattern across the U.S. will continue to favor broad troughing over the Northeast while a warm high pressure ridge remains anchored over the Rockies. Meanwhile, Hurricane Dorian, packing 150mph winds, continues to track westward toward the northern Bahamas this Sunday morning. The latest forecast from the National Hurricane Center indicates that Dorian will move very slowly across northwestern Bahamas as a major hurricane late Sunday into Monday before turning northward near or just offshore of the central Florida peninsula by Tuesday. There are still notable uncertainties as to when and where this northward turn will take place as the upper trough in the Northeast passes to the north of Dorian. Just a slight deviation of the hurricane track to the left would bring life-threatening storm surge and dangerous hurricane-force winds along portions of the Florida east coast. Please refer to the National Hurricane Center for the latest information regarding Dorian. Above-normal to well-above-normal temperatures are forecast to continue across much of the western U.S. into early next week under the warm high pressure ridge. Excessive heat warnings have been extended through today across portions of the southern California deserts, southern Nevada, including the Las Vegas metro, and western Arizona - where daytime temperatures are expected to climb into the triple digits once again. Near-record to record-breaking temperatures are expected Monday across portions of the central Rockies into the High Plains, including the Denver metro area. Daytime temperatures are forecast to reach the upper 90s to near 100 degrees across parts of the region. A cold front dropping southeast from the Pacific Northwest will support breezy conditions but little precipitation - generating elevated fire weather conditions from southwestern Montana and southern Idaho to northern Utah and southern Wyoming on Monday. Fall-like conditions will spread into the northern Plains by Tuesday morning behind the cold front. Following another day of scattered showers and thunderstorms, expect mostly dry conditions over the central and southern Plains today as the better chances for precipitation shift farther northeast through the Ohio valley into the Northeast. Rain chances are expected to continue across the Northeast into Monday ahead of a cold front approaching from southeastern Canada. Meanwhile, as the aforementioned cold front over the West begins to move east of the northern Rockies, showers and thunderstorms will become more likely across the northern Plains and upper Midwest on Labor Day where severe thunderstorms will become possible. Kong/Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php