FXUS64 KOUN 161128 AFDOUN Area Forecast Discussion National Weather Service Norman OK 628 AM CDT Thu Apr 16 2026 ...New AVIATION... .KEY MESSAGES... Updated at 608 AM CDT Thu Apr 16 2026 - Severe storms are expected Friday afternoon and Friday night. - Near-critical fire weather conditions will occur across western Oklahoma this afternoon. Elevated fire weather conditions are possible Saturday and Sunday during the afternoon. - Dry and cooler weather this weekend with a freeze possible Sunday morning (western and northern Oklahoma). && .NEAR TERM... (Through Thursday) Issued at 159 AM CDT Thu Apr 16 2026 Weak shortwave ridging will shift east by late afternoon, as a dryline mixes into parts of central Oklahoma. Afternoon temperatures across the western third of Oklahoma and western north Texas will soar into the lower 90s (perhaps mid 90s). This combined with a very dry airmass will result in some single digit RH values during peak heating. Transport winds suggest a southwest wind will gusts to near 30+ mph at times which will result in near-critical fire weather conditions. A Red Flag Warning is in effect for 6 counties across northwest Oklahoma where fuels continue to be most receptive to fire starts and spread. We will also issue a Fire Danger Statement for several more counties to the east and south. Weak convergence along a dryline may result in an isolated storm or two, mainly along and east of a Seminole to Lake Texoma line. Instability and shear will support a strong to severe storm or two. CAMs also suggest a few storms may form across parts of western north Texas and southwestern Oklahoma, as a shortwave approaches within increase flow aloft. Storm coverage, if any, is also expected to be isolated (a few storms). The dryline will continue to retreat and is expected to bring good to excellent humidity recovery to all of western Oklahoma and northern Texas overnight into early Friday morning. && .SHORT TERM... (Thursday night through Saturday night) Issued at 159 AM CDT Thu Apr 16 2026 Severe weather is expected to impact the area from mid afternoon Friday into the early morning hours of Saturday. A triple point is expected to develop across northwestern Oklahoma by early to mid afternoon, as mid/upper level trough lifts across the northern and central Plains. If a few dryline storms can develop across far western Oklahoma and western north Texas, supercells are likely with a risk of very large hail, damaging winds and tornadoes. Thunderstorm develop is likely along a cold front across far northwestern Oklahoma and perhaps north central Oklahoma (depending on the frontal timing). If storms can remain separated initially, there will be a risk of all hazards, before more storm interactions occur as a squall line develops. The front will accelerate quickly to the south during the early to mid evening with damaging winds and hail expected. The front will clear most of the area by 3 to 5 am Saturday, with linger precipitation in the morning. As gusty northerly wind will prevail on Saturday with much cooler temperatures. With light winds and a clear sky Saturday night, parts of western and northern Oklahoma may experience freezing temperatures by early Sunday morning. && .LONG TERM... (Sunday through Wednesday) Issued at 159 AM CDT Thu Apr 16 2026 Global models and ensemble members are rather similar with a mid-level ridge axis extending roughly along the spine of the Rockies by Sunday. With northeast winds along the western Gulf Coast, dry return flow is expected Sunday afternoon with strengthening southerly winds across western Oklahoma and northern Texas. A low amplitude shortwave trough is expected move across portions of Texas/southern Oklahoma on Monday with height rises and ridging in the wake of this feature on Tuesday. This will result in low rain chances across mainly southern Oklahoma and western north Texas on Monday with mainly dry conditions on Tuesday. Near average temperatures are expected Sunday and Monday with a warming trend starting Tuesday. A more humid airmass will return on Tuesday, as a western trough/low moves across the Intermountain West. A dryline will setup across the Panhandles by Wednesday afternoon, but the mid and upper flow will remain weak. A more active weather pattern will likely emerge Thursday into Friday of next week. && .AVIATION... (12Z TAFS) Issued at 608 AM CDT Thu Apr 16 2026 Low clouds with MVFR to IFR ceilings have developed across portions of southern into central Oklahoma with some patchy fog and reduced visibility. A few localized areas of dense fog have develop across portions of western Oklahoma, including LAW/CSM. The low clouds and reduced visibilities are advecting northward into northern Oklahoma, but confidence is low on these conditions reaching WWR. Meanwhile, based on satellite trends, PNC has a better chance to drop to MVFR at least. With sunrise and daytime warming, the low clouds and patchy fog should begin to lift through the mid-to-late morning hours. Breezy southerly winds of 10 to 15 knots with higher gusts possible. Low level wind shear is possible late tonight across northern Oklahoma with the highest confidence for mention at PNC/SWO. Additionally, models suggest low clouds re-developing again tonight, but confidence was overall too low for any mention in this TAF issuance. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 86 66 81 45 / 10 10 40 70 Hobart OK 90 63 88 44 / 0 10 40 40 Wichita Falls TX 91 66 86 49 / 10 20 20 60 Gage OK 91 61 88 38 / 0 10 30 20 Ponca City OK 86 66 82 43 / 10 10 70 80 Durant OK 85 66 82 51 / 20 10 10 70 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...Red Flag Warning from noon today to 9 PM CDT this evening for OKZ004-005-009-010-014-021. Dense Fog Advisory until 9 AM CDT this morning for OKZ010-011- 015>017-021>023-034-035-038. TX...None. && $$ NEAR TERM...06 SHORT TERM...06 LONG TERM....06 AVIATION...23