Area Forecast Discussion
Issued by NWS Oklahoma City, OK
Issued by NWS Oklahoma City, OK
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127 FXUS64 KOUN 121100 AFDOUN Area Forecast Discussion National Weather Service Norman OK 600 AM CDT Wed Jun 12 2024 ...New AVIATION... .SHORT TERM... (Today and tonight) Issued at 232 AM CDT Wed Jun 12 2024 Patchy fog is possible this morning across western north Texas and southwest Oklahoma, where was recent rainfall and winds are light with clear skies. Any fog should dissipate by mid-morning. Today will be the transition day toward hotter weather as mid- level heights rise with the exit of the mid/upper-level low to the southeast. The low-level thermal ridge will expand the northeast in tandem with an expanding ~595 dam mid-level ridge centered across the southwest U.S. This synoptic-scale pattern, combined with increased insolation, will result in afternoon highs 5 to 10 deg F higher than yesterday--generally ranging from the upper 80s to mid 90s deg F. Mahale && .LONG TERM... (Thursday through Tuesday) Issued at 232 AM CDT Wed Jun 12 2024 By Thursday, the mid-level ridge and attendant low-level thermal ridge will expand farther to the northeast as the center of the ridge begins an eastward shift in response to an mid/upper-level low approaching the California coastline. Even hotter temperatures are expected with afternoon highs another ~5 deg F higher. These hot temperatures will continue into Friday. By late Friday, the aforementioned mid/upper-level low is forecast to open up into a trough and begin to lift into the Plains. This will result in a low to moderate chance (20 to 30%) of showers and thunderstorms beginning across northwest Oklahoma Friday night. As the trough slowly moves across the Plains, there will be at least a low chance of showers and thunderstorms across the northern half of Oklahoma through the upcoming weekend. The uncertainty is southern extent of the trough`s influence. If the latitude of the trough is farther to the south, there is the potential more of the area may see a chance for rain during the upcoming weekend. Outside of any thunderstorms, generally hot temperatures in the 90s deg F will continue through the weekend. By early next week, the mid-level ridge is forecast to be centered across the eastern U.S. Tropical moisture may rotate around the western periphery of ridge. A weakness in the ridge, combined with this tropical moisture, will result in a low chance of showers and thunderstorms across southeast Oklahoma by Tuesday. This weakness may also result in temperatures a few degrees lower-- especially across southeast Oklahoma. A cold front may also approach from the north Tuesday night into Wednesday, but there remains uncertainty on how far south the front will make it before it stalls. Probabilistic guidance indicates the 12/00Z GFS is currently an outlier with its significant cool down by next Wednesday (e.g., the 10th percentile temperatures are 20+ deg F higher than the deterministic GFS). Currently, the more likely scenario is a small to no cool down with a chance of showers and thunderstorms across northern Oklahoma. Mahale && .AVIATION... (12Z TAFS) Issued at 554 AM CDT Wed Jun 12 2024 VFR conditions are expected this TAF period. However, some low stratus is just S and W of KSPS, KCSM, and KWWR. These clouds are expected to remain out of these sites but if do sneak in this morning IFR conditions will be possible. Some patchy fog could also affect KLAW and KSPS this morning. Otherwise, light winds will increase across much of the area today generally from the S. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 89 69 93 71 / 0 0 0 0 Hobart OK 89 69 96 71 / 0 0 0 0 Wichita Falls TX 88 69 94 70 / 0 0 0 0 Gage OK 93 68 101 69 / 0 0 0 10 Ponca City OK 92 69 97 72 / 0 0 0 0 Durant OK 89 68 92 68 / 0 0 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && $$ SHORT TERM...10 LONG TERM....10 AVIATION...25