Area Forecast Discussion
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
837 FXUS64 KLCH 200549 AFDLCH Area Forecast Discussion National Weather Service Lake Charles LA 1249 AM CDT Sun Sep 20 2026 ...New DISCUSSION, AVIATION, MARINE, FIRE WEATHER... .KEY MESSAGES... - Precipitation chances will increase but remain isolated through next week as a high pressure remains centered nearly overhead. - A weak "frontal" boundary will bring some drier air back into the region Wednesday through late next week. && .DISCUSSION... (Today through Saturday) Issued at 1234 AM CDT Sun Sep 20 2026 Aloft, high pressure is centered over the ArkLaTex, with an area of high pressure at the surface over the Gulf Coast. Thanks to light southerly to southeasterly flow, moisture has returned to the area, as indicated by rising dewpoints, especially over the coastal areas. Temperatures over the next few days will be warmer, in the mid to upper 90s, with even some low triple digits possible. Despite the rise in temperatures and dewpoints, values will remain below Heat Advisory criteria. Nevertheless, it is worth mentioning the elevated heat indices. As moisture gradually returns, isolated PoPs could also return to the forecast. Chances overall will remain low due to the influence of the upper ridge; however, it will not completely shut out the chance of some diurnally driven/seabreeze activity. The upper ridge will weaken somewhat as a shortwave moves across the Northern Plains. In addition, a weak frontal boundary is forecast to move through Tuesday into Wednesday. With antecedent conditions being a bit drier, not much in the way of showers and storms is expected as the boundary quickly sweeps through. However, northerly winds are forecast to prevail through the end of the week. This will usher in drier air, and temperatures will likely fall into the low to mid 90s, a decrease from 6 to 13 degrees above normal to a more modest 4 to 7 degrees above normal. && .AVIATION... (06Z TAFS) Issued at 1234 AM CDT Sun Sep 20 2026 VFR conditions are ongoing and likely to prevail for most of the forecast period. Temperatures will continue to decrease under mostly clear skies, while dewpoints remain relatively high. This has increased confidence in patchy fog across the southern terminals, though confidence in anything lower than MVFR remains low. Any fog that forms will be quick to burn off shortly after sunrise. && .MARINE... Issued at 1234 AM CDT Sun Sep 20 2026 Light east to southeast winds and low seas will exist across the coastal waters through Tuesday. A weak frontal boundary may move into the coastal waters Wednesday, with offshore winds increasing into SCEC criteria and increasing rain chances. && .FIRE WEATHER... Issued at 1234 AM CDT Sun Sep 20 2026 Min RH values to increase into the lower 40s to lower 50s for the beginning to middle of the work week as onshore flow becomes established. Little to no rainfall expected during this period. && .LCH WATCHES/WARNINGS/ADVISORIES... LA...None. TX...None. GM...None. && $$ PUBLIC/FIRE/MARINE...87 AVIATION...87