SPC Day 1 Fire Weather Outlook

By Newsroom America Feeds at 14 Sep 2017

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1216 AM CDT Thu Sep 14 2017 Valid 141200Z - 151200Z ...Synopsis... In the mid levels, the flow over the central Rockies vicinity will attain more of a zonal component today. As a result, surface lee troughing will occur over the central High Plains, south of a frontal zone extending from the upper Mississippi Valley to the northern Plains. This will contribute to a tightened pressure gradient over portions of the central states. ...Portions of KS, the OK/TX Panhandles, northwest OK... The aforementioned tightened pressure gradient is expected to support southerly to south-southwesterly surface winds of 15-22 mph with higher gusts. Moisture return will be very limited, owing to the antecedent reinforcement of dry air over the south-central states (south of the remnants of Tropical Cyclone Irma). As temperatures warm into the lower to middle 90s, RH should fall to 19-24 percent (lowest readings in western KS and the OK/TX Panhandles). Given the drying of fine fuels related to the lack of recent precipitation, elevated fire-weather conditions are anticipated. However, given the lack of an even drier air mass, RH is not expected to become sufficiently low amidst strong winds for Critical designation. ...Southern Idaho... Locally elevated fire-weather conditions may occur across the area, including the Snake River Valley, as 10-15 mph surface winds combine with RH falling to the 20s. The anticipated marginal/spotty nature of any elevated fire-weather risk preclude highlights. Furthermore, wetting rainfall has contributed to unfavorable fuels for fire spread in some areas. ..Cohen.. 09/14/2017 ...Please see www.spc.noaa.gov/fire for graphic product... Read more



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