Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 AM EDT Mon Sep 02 2019 Valid 12Z Mon Sep 02 2019 - 12Z Wed Sep 04 2019 ...Extremely dangerous Hurricane Dorian is forecast to edge very slowly toward the central portions of the Florida east coast during the next couple of days... ...Thunderstorms could become severe across the northern Plains into the Great Lakes ahead of a cold front... ...Record-breaking heat today across portions of the central Rockies into the central High Plains... The upper-level pattern across the U.S. will continue to favor troughing over the eastern U.S. while a ridge will remain anchored over the West. Meanwhile, Hurricane Dorian has prompted Hurricane and Tropical Storm Warnings along portions of the Florida east coast. The forward motion of this powerful category-5 hurricane has slowed to a crawl as it moves right along the Grand Bahama Island this Labor Day morning. The latest forecast from the National Hurricane Center indicates that Dorian will begin to turn toward the north-northwest just off the Florida east coast on Tuesday. Please refer to the National Hurricane Center for the latest information regarding Dorian. Above average to well-above-average 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 Great Basin. 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 Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php