Area Forecast Discussion
Issued by NWS Oklahoma City, OK
Issued by NWS Oklahoma City, OK
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200 FXUS64 KOUN 221747 AFDOUN Area Forecast Discussion National Weather Service Norman OK 1247 PM CDT Sun Sep 22 2024 ...New AVIATION... .KEY MESSAGES... Updated at 1240 PM CDT Sun Sep 22 2024 - Showers and storms continue marching southeast through Monday morning. Hazards include a marginal risk for damaging wind gusts, marginally severe hail, and localized flooding. - Below average temperatures this week. && .SHORT TERM... (Today and tonight) Issued at 201 AM CDT Sun Sep 22 2024 A cold front will push through the forecast area today, bringing widespread showers and storms along with it. There is a marginal risk for severe storms (main hazards: damaging winds, marginally severe hail, and heavy rain) along a broad area roughly centered on the I-44 corridor late this morning through early evening. Concerning heavy rain, PWATs of 1.5-2 inches combined with steering flow roughly parallel to the front give some concern for training storms and localized flooding. However, the recent lack of recent rainfall sets the bar high for 1 and 3 hour flash flood guidance (2.5 to 4 inches). HREF guidance suggest southwest Oklahoma and western north Texas will see the highest QPF totals, with 3-hr 1 inch exceedance probabilities in the 50-70% range. Rain chances will linger overnight, decreasing and shifting southeast. Much cooler temperatures will fill in the wake of the cold front, yielding a tight temperature gradient with highs in the 60s in northwest Oklahoma to the lower 90s in south central Oklahoma today. Uncertainty is highest along and surrounding the I-44 corridor with NBM interquartile ranges of 6 to 7 degrees. Lows tonight will drop into the mid 40s in northwest Oklahoma. Day && .LONG TERM... (Monday through Saturday) Issued at 201 AM CDT Sun Sep 22 2024 Rain chances diminish Monday morning across southeast Oklahoma as the front pushes further south of the area. Cooler temperatures are expected to stick around for much of the coming week, with highs 5- 10 degrees below average for this time of year (highs in the 70s and 80s) as a trough remains over the central US. As shortwave energy digs across the central plains and attempts to form another cutoff low, parts of the area could see additional chances for showers and storms. However, models still show significant disagreement on the track of this next system and uncertainty is higher than normal at this range. This system may then linger in the vicinity late next week, maintaining cooler temperatures and potentially more rain chances for parts of the area. Day/Ware && .AVIATION... (18Z TAFS) Issued at 1240 PM CDT Sun Sep 22 2024 Thunderstorms are expected across the southern half of Oklahoma into this evening. IFR ceilings and visibility in western Oklahoma will today and expected to extend to most TAF sites for much of the period. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 56 72 55 78 / 70 20 0 10 Hobart OK 54 76 53 82 / 60 0 0 20 Wichita Falls TX 59 78 58 85 / 80 20 10 20 Gage OK 47 73 50 80 / 10 0 10 20 Ponca City OK 56 72 51 78 / 60 10 0 10 Durant OK 64 79 59 85 / 30 60 10 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && $$ SHORT TERM...14 LONG TERM....14 AVIATION...09