Area Forecast Discussion
Issued by NWS Jackson, MS
Issued by NWS Jackson, MS
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467 FXUS64 KJAN 181903 AFDJAN Area Forecast Discussion National Weather Service Jackson MS 203 PM CDT Wed Sep 18 2024 ...New DISCUSSION... .DISCUSSION... Issued at 203 PM CDT Wed Sep 18 2024 Tonight through Tomorrow Night The main challenge will onset, coverage, and thickness of low- lying stratus and fog development throughout the CWA. That being said we`ve had some dry air mix into the area mostly off to the northeastern most quadrant, which should inhibit any low-lying stratus development in that area. The rest of the CWA will see areas of patchy fog with denser development in low elevation sites along shallow river valleys. In any event, hydrometeors are expected to burn off by mid morning across all sites. Other weather parameters look to be typical, following with diurnal trends. Highest wind speeds look to be under 10kts and generally northerly, although the direction may be variant with light winds and a ridge that extends from the surface through to 300mb that is slowly building throughout the period. Precipitation chances remain near 0% with the isentropic lift mechanism eroding away early this morning, being relegated along the MS/AL/FL gulf coast. Lows in the mid 60s and highs are expected to be the high 80s. Friday through Tuesday... Ridging will continue to entrench itself across the Lower Mississippi River Valley and as the cut-off low over the Carolinas (the remnants from an unnamed tropical system that moved through earlier this week) begins to fill and push eastward; we will see a shifting of the ridge axis to a more positive tilt. This will result in tame conditions across the region for the remainder of the period, with rain chances rebounding into the 20% range Wednesday afternoon as the ridge completes its traversal across our area and a trough beginning to meander over from the west. Relative humidity values are not expected to change much so expect a more narrow diurnal swing in our temperatures: Highs in the mid to high 80s and lows in the low to mid 60s./OAJ/ && .AVIATION... (18Z TAFS) Issued at 1230 PM CDT Wed Sep 18 2024 VFR conditions will predominate through the TAF period. Brief localized fog and low stratus cannot be ruled out early Thursday morning, but confidence at any specific site is too low to include in TAF at this time. /DL/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 68 90 67 90 / 0 0 0 0 Meridian 65 91 67 92 / 0 0 0 0 Vicksburg 69 91 66 91 / 0 0 0 0 Hattiesburg 71 92 69 94 / 0 0 0 0 Natchez 70 90 67 91 / 0 0 0 0 Greenville 64 88 65 90 / 0 0 0 0 Greenwood 64 90 67 92 / 0 0 0 0 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && $$ OAJ/DL