Area Forecast Discussion
Issued by NWS Oklahoma City, OK
Issued by NWS Oklahoma City, OK
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825 FXUS64 KOUN 121745 AFDOUN Area Forecast Discussion National Weather Service Norman OK 1245 PM CDT Sun May 12 2024 ...New AVIATION... .SHORT TERM... (Today and tonight) Issued at 311 AM CDT Sun May 12 2024 Low-level moisture advection increases today as winds shift to the S/SE, initially across western north Texas and then western Oklahoma as the closed upper low slowly moves across northern New Mexico and southern Colorado. We will see dewpoint temperatures rise into the low 60`s across much of the area today and high temperatures should remain in the low 70`s. However, areas that see more rounds of rain (parts of western Oklahoma) could stay in the 60`s. Scattered to numerous showers (along with a few general thunderstorms) are expected this morning - mainly across the western third of our FA with rain anticipated to affect central Oklahoma by late morning or early afternoon as the upper low reaches eastern CO/NM and as isentropic lift strengthens. Rain rates will increase this afternoon for portions of northwest Oklahoma and western north Texas and moderate rainfall will continue across northern Oklahoma tonight as the upper low progresses across Kansas and northern Oklahoma. With expected QPF remaining below flash-flood guidance, a flood watch is not needed. Weak instability could increase into the afternoon, particularly over western north Texas, and this area would have the greatest severe storm potential. CAMS still disagree on how much instability will be present this afternoon and overnight and the RAP is the most robust, with 1000 to 1500 J/kg of MUCAPE extending into central Oklahoma tonight. With that said, some strong to marginally severe storms are possible beginning this afternoon out west and then into west-central Oklahoma tonight, as well. Large hail and gusty winds of 40 to 50 mph are possible with some storms. Thompson && .LONG TERM... (Monday through Saturday) Issued at 311 AM CDT Sun May 12 2024 The developing surface trough shifts eastward across the plains and a weak cold front moves through the area by Monday night. There is a marginal risk of severe thunderstorms over southeastern Oklahoma as early as mid-morning as instability increases ahead of the approaching front. Large hail is the main concern with this activity. Warmer temperatures are expected on Tuesday and Wednesday with winds shifting to the south as a low-amplitude ridge passes overhead. Shower and thunderstorm chances return to northern Oklahoma on Wednesday morning due to low-level WAA ahead of an approaching subtropical shortwave. Thunderstorm chances increase late Wednesday, especially across western counties as the shortwave draws closer and as a cold front approaches the area. Storm chances continue into Thursday and Thursday night with the approach of a stronger trough. Then, a warming trend is forecast into next weekend. Thompson && .AVIATION... (18Z TAFS) Issued at 1245 PM CDT Sun May 12 2024 An area of showers and thunderstorms will continue to move to the east-northeast this afternoon. Brief reduction in visibility to MVFR or IFR flight conditions are possible in association with the heaviest rainfall. MVFR to IFR ceilings are likely this evening into the overnight hours as stratus develops across the area. Another round of showers and thunderstorms is expected to develop during the evening hours with the highest probability of impact across the northern half of Oklahoma (KWWR/KSWO/KPNC); however, impacts may occur as far south as KCSM to KOKC/KOUN. Winds will gradually shift to the west and northwest late in the TAF period. As this occurs, ceilings should begin to transition toward VFR. Mahale && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 60 75 57 79 / 80 40 10 0 Hobart OK 59 77 54 82 / 60 30 0 0 Wichita Falls TX 62 80 57 82 / 50 10 0 0 Gage OK 53 73 50 84 / 70 20 0 0 Ponca City OK 59 73 56 78 / 100 70 20 10 Durant OK 63 79 60 82 / 60 40 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && $$ SHORT TERM...01 LONG TERM....01 AVIATION...10