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Area Forecast Discussion
Issued by NWS Tulsa, OK
Issued by NWS Tulsa, OK
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362 FXUS64 KTSA 291917 AFDTSA Area Forecast Discussion National Weather Service Tulsa OK 217 PM CDT Sat Jun 29 2024 ...New SHORT TERM, LONG TERM... .SHORT TERM... (Tonight) Issued at 215 PM CDT Sat Jun 29 2024 Dangerous heat conditions are ongoing and will persist through mid evening. Focus will be on increase storm chances later this afternoon through the evening primarily across NE OK into far NW AR. Sfc boundary currently aligned from NW OK into SE KS will be the focus for storm development within an increasingly unstable airmass. Short term guidance does steadily increase the effective shear profiles across the frontal zone this evening so some degree of storm organization is likely which will raise potential for a few severe storms capable of large hail and locally damaging downbursts. Mean storm motions will generally be east to west which should confine higher precip coverage across the northern periphery of the forecast area, however a more southward motion or development should be expected with any brief supercell structure and outflow focused new storms. The risk of severe weather will begin to wane by late evening. Locally heavy rains should also be expected as deep moisture pools along the frontal zone and storm motions may track in a generally confined corridor. && .LONG TERM... (Tomorrow through Saturday) Issued at 215 PM CDT Sat Jun 29 2024 Showers and storms may be ongoing early Sunday along the elevated frontal zone which will slowly focus southward into the region. The composite sfc boundary / outflows will likely align further southward across SE OK into western AR by Sunday afternoon. Additional afternoon storms are likely along the sfc front while some amount of persistent elevated convection continue further north. Temperatures are likely to be highly variable across the forecast area on Sunday with cloud cover and precip along with frontal gradients all creating uncertainties. Along and south of the sfc boundary may again approach heat advisory criteria but will hold off on headlines at this time given wide range of scenarios. Sfc boundary gradually loses definition and realigns more north south across the region on Monday. Upper ridge will begin to strength overhead however isolated to scattered afternoon storms are likely along the remnant boundaries. Heat will intensify Tuesday into Wednesday and heat headlines likely return. Pattern change expected by late week with ridging aloft expanding through the western CONUS and downstream troughing aiding a notable cold front push southward. The front is currently timed to pass through the local region Friday with increasing shower and thunderstorm chances and cooler temperatures into next weekend. && .AVIATION... (18Z TAFS) Issued at 1226 PM CDT Sat Jun 29 2024 VFR conditions will prevail through today and a good portion of tonight. Scattered storms are expected to develop along a frontal boundary moving into northeast OK around 00z, with storms developing into part of northwest AR later this evening. Overall storm coverage remains a bit uncertain, but gusty winds are possible with a few, and any direct impact could result in brief IFR conditions at NE OK and NW AR sites this evening. Data suggests increasing probability of MVFR ceilings spreading into NE OK and NW AR early Sunday morning. && .PRELIMINARY POINT TEMPS/POPS... TUL 76 88 76 95 / 40 30 10 20 FSM 79 93 76 93 / 20 60 10 20 MLC 77 94 74 96 / 20 40 10 20 BVO 70 85 71 94 / 70 30 10 20 FYV 73 87 69 89 / 30 50 10 20 BYV 73 87 68 88 / 50 50 10 20 MKO 76 90 75 93 / 30 40 10 20 MIO 70 85 71 91 / 70 40 10 20 F10 75 91 74 95 / 20 40 10 20 HHW 78 96 75 95 / 10 30 10 20 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...Heat Advisory until 9 PM CDT this evening for OKZ058-063-069. Excessive Heat Warning until 9 PM CDT this evening for OKZ049- 053>057-059>062-064>068-070>076. AR...Heat Advisory until 9 PM CDT this evening for ARZ001-002-010-011. Excessive Heat Warning until 9 PM CDT this evening for ARZ019- 020-029. && $$ SHORT TERM...07 LONG TERM....07 AVIATION...14