Area Forecast Discussion
Issued by NWS New Orleans/Baton Rouge, LA
Issued by NWS New Orleans/Baton Rouge, LA
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210 FXUS64 KLIX 300820 AFDLIX Area Forecast Discussion National Weather Service New Orleans LA 320 AM CDT Tue Apr 30 2024 ...New SHORT TERM, LONG TERM, AVIATION, MARINE... .SHORT TERM... (Today through Wednesday) Issued at 232 AM CDT Tue Apr 30 2024 Fog will be the weather maker this morning. Most locations should fall below 1/2 mile and many less than 1/4 mile. Dense fog advisory has been posted for most of the area. The only locations that may not have an issue with this is the eastern coastline of LA and some of coastal Mississippi. This is radiation fog so it will need very little to no wind, no cloud cover and mainly outside heat islands. The cloudy skies are hanging on over areas where the dense fog advisory is not valid. This cloud cover is expected to hand on through sunrise in these areas. Some sh/ts are also hangin on over Jackson Co. this morning. But as the cloud cover slowly moves east, we may need to bring these areas in for fog as well. But current thinking is that these cloudy areas should be clear(of fog) for now. The moisture is now in place for fog again tonight. And again, it will be a radiation fog night as well so areas where there are no cloudy cover and calm winds will likely see this again tonight/Wed morning. A weak trough axis exists from Houston to the SE well offshore. This will begin to move back to the north later today and should be near or just on the coast by Wed. It may be just enough to help a few sh/ts develop with heating. Widespread rain or storms are not expected with this, but it could bring some rain to areas in and around the Atchafalaya Basin. && .LONG TERM... (Wednesday night through Monday) Issued at 232 AM CDT Tue Apr 30 2024 Fog will remain a concern for Wed night/Thu morning as well as long as we still have enough moisture trapped in the BL. We should also see a similar type of event that occurred over our area yesterday. But this time, it may be farther north. An MCS feature looks to break away from the front over central TX Thursday and move rapidly east along the interstate 20 corridor. At the same time, a cold front will orient east/west near the Missouri/Arkansas line and stall. This will help keep an unsettled environment along and south of this line as several disturbances move over and south of this line for the next several days Thursday. We will need to look at each day individually later this week to break down whether we will get some of this activity. && .AVIATION... (12Z TAFS) Issued at 232 AM CDT Tue Apr 30 2024 Mainly IFR to LIFR cigs and vis this morning for most areas. This will lift into VFR levels by mid morning. There is a good possibility of FG developing at some terminals again tonight/Wed morning. && .MARINE... Issued at 232 AM CDT Tue Apr 30 2024 Light and variable winds will begin to become SE today and should stay this way through this fcast remaining around 10kt for the most part. && .PRELIMINARY POINT TEMPS/POPS... MCB 84 62 86 64 / 0 0 30 0 BTR 89 67 88 69 / 0 0 40 0 ASD 86 66 87 67 / 10 0 20 0 MSY 85 69 86 71 / 10 0 20 0 GPT 84 66 84 67 / 10 0 10 0 PQL 86 64 88 64 / 10 0 10 0 && .LIX WATCHES/WARNINGS/ADVISORIES... LA...Dense Fog Advisory until 9 AM CDT this morning for LAZ034>037- 039-046>048-056>060-065>068-071-076-078>086-088>090. GM...None. MS...Dense Fog Advisory until 9 AM CDT this morning for MSZ068>071- 077-083-086. GM...None. && $$ SHORT TERM...TE LONG TERM....TE AVIATION...TE MARINE...TE