3:30 PM CT Nowcast for Oklahoma City/Dryline Update 3

By mid afternoon…a dryline was nearly stalled from central Texas up through south central and eastern Oklahoma. The dryline extended from Mineral Wells Texas to Pauls Valley and Tulsa. Humidity dropped immediately to 20 percent behind the boundary…and was generally 9 to 17 percent over the western half of Oklahoma and all of western North Texas. Temperatures were in the upper lower to middle 80s. Throughout this same area…winds were somewhat breezy…at 15 to 20 mph with a few higher gusts. Winds were much stronger in northwest Oklahoma…beneath the core of a mid level jet stream. West to southwesterly winds were sustained at 20 to 30 mph with occasional gusts around 45 mph…affecting an area north of Cheyenne to Cherokee. A cold front was dropping through western Kansas this afternoon… and will reach Harper County Oklahoma around 5 PM. This will turn winds to the northwest…with a decrease in speeds…but with gusts still near 30 mph. Meanwhile…trends in satellite data and short range model output suggest that an upper trough will lift from Mexico through Texas early this evening. As this trough interacts with the dryline… scattered thunderstorms may develop up toward southern Oklahoma after 6 PM.


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