Thicker clouds are expected to the south. The Weather Service office there points out that morning low clouds should break a bit this afternoon, particularly north of Interstate 20 that cuts through the city. Folks in the region should prepare for severe weather, including tornadoes, in the hours following the eclipse. Dallas (62 percent cloud cover - somewhat sunnier than previous forecasts): Variable cloud cover is likely during the day before a risk of strong to severe storms toward evening.This outlook is intended to offer only a general guide. Cloud cover often depends on processes happening at very small scales in the atmosphere - small enough that models don’t always have enough detailed data to accurately simulate them.It’s possible there could be some clouds building in far southern Indiana. The cloudiest locations in the Northeast are mainly from near lakes Erie and Ontario, including Jamestown, Buffalo and Rochester.San Antonio, Hondo and Eagle Pass look to be among the cloudier locations. Texas is home to many of the cloudiest forecasts, which is the opposite of historical norms. Totality locations where the risk of clouds is highest, with cloud cover expected to exceed 75 percent, include south and central Texas, as well as parts of the eastern Great Lakes focused on New York.Other locations where cloud cover is forecast to be less than 25 percent include Little Rock and Hot Springs in Arkansas, Thayer in southern Missouri and Frankfort, Ind.A zone from northeastern Vermont to Caribou in far northeastern Maine currently has the lowest predicted cloud percentage among totality locations. Totality locations where skies are most likely to be clear include the area from the northwestern half of Arkansas through south-central Indiana as well as northern New England.Another front will be stalling out and weakening over the central states while approaching the Ohio and Tennessee valleys, causing an increase in clouds along portions of the path, especially near the eastern Great Lakes and in central to southern Texas.There could be clouds moving into the Vermont portion of the eclipse track, but they should be high and thin clouds that still allow a decent view. Confidence in sunny skies is highest in northern New England because of high pressure clouds associated with a weak cold front will probably stay to the north.
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