Area Forecast Discussion
Issued by NWS Tulsa, OK
Issued by NWS Tulsa, OK
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585 FXUS64 KTSA 171529 AFDTSA Area Forecast Discussion National Weather Service Tulsa OK 1029 AM CDT Fri May 17 2024 ...New SHORT TERM... .SHORT TERM... (The rest of today) Issued at 1029 AM CDT Fri May 17 2024 Dense fog this morning has burned off across most of the region allowing the Dense Fog Advisory to be allowed to expire, with clear to partly cloudy skies currently noted. A compact shortwave trough embedded within the broad southwest to northeast oriented upper trough will progress northeastward this afternoon into eastern Oklahoma and west central Arkansas. Isolated to scattered thunderstorms are expected to develop this afternoon as this wave encroaches on the warm/moist airmass in place. The greatest coverage of storms will likely be associated with the wave across parts of far eastern Oklahoma and into northwest Arkansas from mid to late afternoon. A lack of deep layer shear should keep storms from becoming very organized and thus, the severe potential will remain limited. Some isolated stronger downbursts or small hail are still possible with the more persistent updrafts over northwest Arkansas. With seasonably high moisture in place and due to the slow moving nature of any storms, locally heavy rainfall will be the main concern, especially over areas that have received a lot of rainfall recently, and could lead to some isolated flash flooding concerns. Otherwise, highs this afternoon will be seasonably warm in the upper 70s to lower 80s across the area. Update this morning adjusted PoPs/Thunder grids to align with current trends to lessen coverage of storms across eastern Oklahoma. Bowlan && .LONG TERM... (Tonight through Thursday) Issued at 317 AM CDT Fri May 17 2024 Some lingering showers and storms persist into the evening, mainly across southeast OK and western AR as the upper wave departs. Some amount of fog is likely again tonight, and potential for locally dense fog will be there. Otherwise the weekend will be uneventful weather-wise as shortwave ridging establishes over the region for a couple of days. Temperatures will rise above normal with rather humid conditions, however the NBM numbers for high temps may be a bit high given the saturated soil conditions. Either way, heat index values in the lower or even mid 90s are possible both days. The remainder of the extended forecast becomes a bit more active as stronger flow aloft sets up over much of the country, with some degree of longwave troughing in the west. A passing shortwave will result in a low threat of showers and storms late Sunday nigh into Monday across far northeast OK, though instability looks limited at this time. A more substantial wave will push a cold front into the area, sometime Tuesday most likely, and with the stronger deep layer flow present, the potential for severe weather will increase during that time. Confidence beyond that remains low regarding any details, but some degree of thunderstorm chances will be maintained into later next week. && .AVIATION... (12Z TAFS) Issued at 634 AM CDT Fri May 17 2024 Areas of fog will reduce visibilities and ceilings for the first couple hours of the forecast period, with mainly VFR conditions prevailing thereafter. A few showers and thunderstorms will be possible this afternoon, with the Arkansas sites most likely to be impacted. At least patchy fog will be possible again late tonight, with the southeast Oklahoma and northwest Arkansas sites most likely to see fog impacts at that time. && .PRELIMINARY POINT TEMPS/POPS... TUL 80 60 86 64 / 10 10 0 0 FSM 79 62 85 64 / 50 20 10 0 MLC 79 60 85 64 / 30 20 0 0 BVO 81 57 86 60 / 10 0 0 0 FYV 77 58 82 60 / 70 20 10 0 BYV 76 58 83 60 / 60 20 10 0 MKO 77 60 84 62 / 30 20 10 0 MIO 79 59 85 61 / 20 10 10 0 F10 77 59 84 63 / 30 20 0 0 HHW 79 62 86 64 / 30 20 10 0 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && $$ SHORT TERM...04 LONG TERM....14 AVIATION...05