Area Forecast Discussion
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
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649 FXUS64 KLCH 171107 AFDLCH Area Forecast Discussion National Weather Service Lake Charles LA 607 AM CDT Tue Sep 17 2024 ...New AVIATION... .SHORT TERM... (Today through Thursday night) Issued at 335 AM CDT Tue Sep 17 2024 The weak, quasistationary boundary that has been sitting over the area for the last three days is presently analyzed near the coast this morning with dewpoints ranging from 68 to 73 away from the coastline. Aloft, a broad upper level low resulting from the merging of the remnants of Francine and a now inland tropical disturbance will maintain weakness aloft across Acadiana through the day. The combination of these two features will result in scattered convection this afternoon primarily around the Atchafalaya basin, but isolated convection could develop as far West as Lake Charles. As has been the case the last couple of days, any convection that develops should wane around sunset. Upper level ridging over central Texas builds further into the region by Wednesday which should keep any afternoon convection isolated. Further entrenchment of the ridge on Thursday looks to suppress all convection. Daily temperatures will be running near seasonal normals both today and Wednesday with highs ticking up a degree or two Thursday in response to less cloud and precip coverage. Jones && .LONG TERM... (Friday through Tuesday) Issued at 335 AM CDT Tue Sep 17 2024 The extended period will be dominated by upper level ridging becoming centered nearly overhead Friday through early next week. This will prevent any appreciable precipitation while keeping temperatures at or slightly above seasonal normals. A weak gradient at the surface will maintain somewhat variable winds at 5 MPH or less. Jones && .AVIATION... (12Z TAFS) Issued at 526 AM CDT Tue Sep 17 2024 Light ground fog has developed across the region this morning intermittently causing minor visibility restrictions at area terminals. Expect any fog to dissipate by 14Z. A weak pressure gradient at the surface broadly surrounding a tropical disturbance over the Carolinas will maintain light Northwesterly to Northerly winds through the period. The combination of a weak frontal boundary at the surface and weakness aloft will support scattered thunderstorm development from mid afternoon through early evening primarily across South Central Louisiana. LFT and ARA are most likely to be affected by these storms. Storms will wane by around sunset with calm and clear conditions expected tonight. Another round of light ground fog may develop early Wednesday morning. Jones && .MARINE... Issued at 335 AM CDT Tue Sep 17 2024 A weak pressure gradient across the gulf this week will keep winds light and seas low. Isolated showers and thunderstorms will be possible across the near shore waters this afternoon with no appreciable precipitation chances expected the rest of the week. && .PRELIMINARY POINT TEMPS/POPS... AEX 86 69 88 69 / 20 0 10 0 LCH 88 74 88 74 / 20 10 10 0 LFT 89 74 90 74 / 40 10 20 0 BPT 91 75 92 74 / 10 10 10 0 && .LCH WATCHES/WARNINGS/ADVISORIES... LA...None. TX...None. GM...None. && $$ SHORT TERM...66 LONG TERM....66 AVIATION...66