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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 0752Z Sep 16, 2020)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 352 AM EDT Wed Sep 16 2020 Valid 12Z Wed Sep 16 2020 - 12Z Fri Sep 18 2020 ...Sally to bring hurricane force winds and life-threatening flash flooding and storm surge to parts of the Central Gulf Coast... ...There is a high risk of excessive rainfall over parts of the Eastern Gulf Coast... ...Wildfires and poor air quality continues over parts of the interior Pacific Northwest, Central California, the Northern Rockies, the Great Basin, Arizona, and Northern New England... ...Below normal temperatures will move into the Upper Midwest... The latest forecast for Hurricane Sally from the NHC has Sally onshore early Wednesday morning. Hurricane force winds, life-threatening storm surge, very heavy rainfall, and a threat for tornadoes will continue through Wednesday for portions of the Central Gulf Coast region. Sally is a slow moving storm producing very heavy rainfall a high risk for life-threatening and historic flash flooding. As Sally makes her way slowly inland, significant flash and urban flooding, as well as minor to moderate river flooding, are likely to spread northward into Alabama, Northern Georgia, and the Western Carolinas. The WPC has issued a high risk of excessive rainfall over parts of the Central Gulf Coast through Thursday morning. The heavy rain and surf associated with Sally will produce severe, widespread areas of flash flooding, this will include areas that don't normally experience flash flooding. The latest forecast storm total rainfall from Sally calls for 10 to 20+ inches of rain with isolated 35 maximum over parts of Southeast U.S.. Please refer to the latest advisory from the NHC for additional and updated information regarding Sally. Out West and Northeast, dense smoke advisories and air quality alerts remain in place across much of the Northwest U.S., Great Basin, parts of Central California, parts of Arizona, and Northern New England. Compared to recent days, fire weather conditions should continue to improve across the Western U.S. ahead of a frontal boundary. By Thursday evening into Friday, some much anticipated rainfall is expected to move into parts of the Pacific Northwest. Above average temperatures will continue Wednesday into Thursday over the Western U.S.. A cold front dropping into the Northern Tier States will bring a surge of colder temperatures spreading from the Upper Midwest on Wednesday into Thursday. Daytime highs could be 10 degrees below normal for some locations within this airmass. Elsewhere, the East Coast should remain comfortable and near normal the next few days, with below normal temperatures also expected within areas impacted by Hurricane Sally. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php