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Area Forecast Discussion
Issued by NWS Tulsa, OK
Issued by NWS Tulsa, OK
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984 FXUS64 KTSA 190219 AFDTSA Area Forecast Discussion National Weather Service Tulsa OK 919 PM CDT Thu Jul 18 2024 ...New SHORT TERM... .SHORT TERM... (The rest of tonight) Issued at 919 PM CDT Thu Jul 18 2024 Convective activity that occurred across far southeast OK earlier this afternoon has since diminished and the rest of the evening/night should be rain-free for all of eastern OK and northwest AR. Surface high pressure will remain in control across the forecast area tonight, maintaining a fairly cool and dry air mass with light winds after midnight. Although a few mid/high level clouds are possible from time to time, skies should stay mostly clear. For the evening update, decided to drop overnight low temperatures a degree or two from the afternoon forecast package with (assuming skies remain mostly clear and winds remain light) a decent radiational cooling setup occurring tonight. Most locations will see temperatures fall into the low-mid 60s (5 to 10 degrees cooler than seasonal average). Some of the coolest spots tonight will be across the higher elevations in northwest AR and in portions far northeast OK, where mid-upper 50s temps are probable if the forecast verifies. Finally, there is a low probability of light fog forming in locations that picked up some rain earlier today, mostly impacting Pushmataha and Choctaw counties. However, probabilities are too low (< 20%) to include in the grids at this time. Mejia && .LONG TERM... (Tonight through Thursday) Issued at 154 PM CDT Thu Jul 18 2024 A seasonably cool start is expected Friday morning with another pleasant afternoon as surface ridge remains over the area. Southerly winds will return on Saturday with increasing low level moisture. A weak mid level disturbance will swing around base of trough with increasing shower/thunderstorm chances Saturday into Sunday. Deterministic GFS solution is more aggressive with wave compared to EC with higher QPF across southeast Oklahoma. With the large spread in the GEFS, the more broad and lower rainfall amounts seems reasonable for now. Another weak upper low will approach from the north on Monday as long wave troughing remains over the central/southern Plains, extending northeast into the Great Lakes region. Most areas will receive at least some rainfall (0.25 inch) over the weekend into early next week, with locally higher amounts with these two systems. Increasing cloud cover/precip chances will likely keep high temperatures several degrees below normal both Sunday/Monday. Although a slow warming trend is expected into mid week, the overall weather pattern will not significantly change with the upper trough remaining over the region. Temperatures are forecast to stay near or slightly below normal with a least low rain chances across SE OK/NW AR through the extended periods. && .AVIATION... (00Z TAFS) Issued at 624 PM CDT Thu Jul 18 2024 Few to scattered mid and high clouds are forecast across the CWA through the TAF period as surface high pressure remains to the northeast of the region. In response...winds through the period should continue to be light/variable to an easterly direction. VFR conditions should persist through the TAF period for the CWA. && .PRELIMINARY POINT TEMPS/POPS... TUL 63 88 67 87 / 0 0 0 10 FSM 66 88 66 90 / 0 0 0 0 MLC 65 87 66 87 / 0 0 0 0 BVO 59 86 62 85 / 0 0 0 10 FYV 58 85 61 87 / 0 0 0 0 BYV 60 83 60 86 / 0 0 0 0 MKO 63 86 65 87 / 0 0 0 0 MIO 60 84 62 85 / 0 0 0 0 F10 64 87 65 87 / 0 0 0 10 HHW 68 87 66 88 / 10 0 0 0 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && $$ SHORT TERM...67 LONG TERM....12 AVIATION...20