Administrators NorthGeorgiaWX Posted October 27 Administrators Posted October 27 SPC Day 1 Fire Weather Outlook Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1128 AM CDT Sun Oct 27 2024 Valid 271700Z - 281200Z No changes have been made to the ongoing forecast. ... Mid-Atlantic to southern New England ... South of the ongoing elevated fire weather highlights a very dry airmass will remain in place, with relative humidity falling into the low 20s to perhaps even the upper teens in localized areas. Current wind forecasts (less than 10 mph) should limit extreme fire behavior as compared to areas farther north, which is why the existing elevated area was not extended southward. That said, the dry airmass and record dry fuels in place will certainly support an increase in fire starts and initial attack. ..Marsh.. 10/27/2024 .PREV DISCUSSION... /ISSUED 0141 AM CDT Sun Oct 27 2024/ ...Synopsis... A deepening trough over the western US is forecast to amplify as southwesterly flow over much of the western US increases. A lee trough over the High Plains will bolster downslope surface winds across the western US. To the east, high pressure should continue to intensify supporting offshore winds over New England behind an offshore cold front. Elevated fire-weather conditions are possible given unusually warm, dry and windy conditions over the CONUS. ...Lee of the Rockies and High Plains... Increasingly strong west/southwest flow ahead of the trough will support gusty winds across the Rockies and Northern High Plains. Near a lee trough, downslope winds of 15-20 mph are likely, coincident with a relatively dry air mass with RH values near 20%. Sustained elevated to locally critical fire-weather conditions appear likely across parts of central MT, eastern WY, and into western parts of the Dakotas and NE/CO. Here, fuels are the most receptive and the longest overlap of favorable meteorological conditions is expected. ...Southern New England... While slightly weaker than prior days, offshore flow should continue across parts of the East Coast and southern New England today. Gusty winds near 15 mph are possible, mainly closer to the coast, where RH values are still expected to be near 30-35%. A few hours of elevated fire-weather conditions are possible within record dry fuels. Concerns will ease as high pressure shifts eastward, weakening winds and cooler air mass will moderate RH values into Monday. ...Please see www.spc.noaa.gov/fire for graphic product... Read more View the full article Quote
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