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Area Forecast Discussion
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
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073 FXUS64 KLIX 260457 AFDLIX Area Forecast Discussion National Weather Service New Orleans LA 1157 PM CDT Thu Jul 25 2024 ...New AVIATION... .SHORT TERM... (This evening through Saturday Night) Issued at 250 PM CDT Thu Jul 25 2024 As has been repeated since the beginning of the week, we`re still in this wet but still pretty hot summer pattern. Temps today remain in the high 80s with heat index values just barely reaching 100. Tomorrow is similar albeit a bit cooler with heat indicies only reaching about 97. Short range models still suggest daily summer convection, and while these storms may not necessarily be jaw dropping, locally heavy rainfall can happen in places where convection rates tend to be higher. PWs are tending to range anywhere from 1.75-2.25 which supports said heavier local rainfall amounts. Going into Saturday, the models support the trough that has been stationed over the CWA finally moving towards the east coast. While this can be good in terms of catching a break from all the heavy rain we`ve been seeing, this does suggest a small increase in temperatures in the future. (Hunn)/(Frye) && .LONG TERM... (Sunday through Wednesday Night) Issued at 250 PM CDT Thu Jul 25 2024 Sunday will be a more transitional day as the H5 ridge spread westward across the northern Gulf of Mexico and generally in our direction. This will help punt the active southwesterly flow a bit as the upper level weakness continues down stream across the Ohio River Valley. The upper level pattern from this point will allow for this weakness to park over the eastern US Coastline late by midweek putting our region in a dryer northwesterly flow aloft. Speaking of drier, POPs late this weekend and early next week are still middle of the road, but not nearly as high as they have been running. The heights and subsidence aloft will help limited convection to more scattered in nature during the diurnal max (land/sea respectively). So, inversely as POPs decrease, temperatures will increase and that has been outlined gradually through the long term forecast period. Without being too specific, unfortunately it does look like we may start flirting with heat headline criteria once again from Sunday onward. (Frye) && .AVIATION... (06Z TAFS) Issued at 1156 PM CDT Thu Jul 25 2024 Prevailing VFR conditions are anticipated at all of the terminals through 16-18z. As temperatures warm, convection will begin to form around 18z and continue to form through 00z before once again dissipating between 00z and 02z. Have included a mention of prevailing SHRA and VCTS at all of the terminals between 18z and 00z. If a thunderstorm directly impacts a terminal, a period of gusty winds and a brief reduction in visibilities and ceilings into MVFR and IFR range can be expected. Convective impacts should be between 30 minutes and an hour if storm moves over a terminal. PG && .AVIATION... (00Z TAFS) Issued at 628 PM CDT Thu Jul 25 2024 A very typical Summer pattern of pop up convective cells forming between 18z and 00z is once again expected over the area tonight into tomorrow. Ongoing convection near MCB, HDC, and NEW will quickly dissipate within the next two hours as daytime heating wanes. Once these storms dissipate, prevailing VFR conditions are anticipated at all of the terminals through 16-18z. As temperatures warm, convection will begin to form around 18z and continue to form through 00z before once again dissipating between 00z and 02z. Have included a mention of prevailing SHRA and VCTS at all of the terminals between 18z and 00z. If a thunderstorm directly impacts a terminal, a period of gusty winds and a brief reduction in visibilities and ceilings into MVFR and IFR range can be expected. Convective impacts should be between 30 minutes and an hour if storm moves over a terminal. PG && .MARINE... Issued at 250 PM CDT Thu Jul 25 2024 Marine conditions will remain rather favorable through the cycle. Winds will mostly be onshore, but closer to the coast more variable wind directions may be possible. Regardless, winds should remain less than 10kts and seas again will remain favorable. Convectively speaking, showers and storms will continue each day, which may increase winds and seas locally. A waterspout or two will also remain possible, especially early morning. (Frye) && .PRELIMINARY POINT TEMPS/POPS... MCB 71 85 71 88 / 50 70 50 90 BTR 75 89 75 91 / 30 70 50 90 ASD 74 90 75 91 / 30 70 50 90 MSY 77 88 77 90 / 30 70 50 90 GPT 75 88 76 89 / 30 60 40 80 PQL 74 92 75 93 / 20 60 30 80 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...None. GM...None. MS...None. GM...None. && $$ SHORT TERM...RDF LONG TERM....RDF AVIATION...PG MARINE...RDF