Area Forecast Discussion
Issued by NWS Jackson, MS
Issued by NWS Jackson, MS
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658 FXUS64 KJAN 292348 AAA AFDJAN Area Forecast Discussion...UPDATED National Weather Service Jackson MS 648 PM CDT Wed May 29 2024 ...New AVIATION... .DISCUSSION... Issued at 313 PM CDT Wed May 29 2024 Through Thursday: A small convective system has continued to move east into southwest portions of the forecast area as of early afternoon. It has been producing some strong wind gusts, but expect these storms to diminish as they move farther east into more stable air. Overnight, there is some guidance suggesting redevelopment of showers along a warm front pushing north across the area, so it wouldn`t be surprising if we see an uptick in convective rainfall late tonight and perhaps into the early morning along some west- east oriented axis (e.g., recent HRRR/ARW2 suggest along the I-20 corridor). As we go through Thursday, a warm, moist, and unstable environment along a slowly- shifting frontal boundary will support additional shower/thunderstorm chances during peak heating hours. As of now, there are no signals for significant MCVs/perturbations moving across that might enhance the convective potential and increase the risk for strong/severe storms. /EC/ Friday through Wednesday: More of a summer-like active weather pattern is expected around the region through the early parts of next week. Generally southerly flow in the low levels as surface high pressure drifts across the eastern CONUS into early next week will keep moist and unstable air flowing into the Gulf Coast and Southern Plains regions. Guidance points to two upper-level low pressure systems slowly moving east from the Plains toward the Great lakes in that time frame - one passing east of our area Friday night into Saturday and the other sometime Sunday into the early part of next week. These and any other minor disturbances will interact with the moist air mass in place to support diurnal convection. There could be some better flow at times, with mid- level speeds around 20-30 kts, while tapering off between waves. PWAT values will meanwhile rise into the 1.6-2.0 inch range and support locally heavy downpours. At this time, a highlighted Marginal Risk for severe storms is out for much of the area on Friday, but can definitely foresee additional Severe Storm Outlooks being needed as details come into alignment. Microbursts producing localized damaging wind gusts, hail, and heavy rain will be a possibility through the middle of next week. /NF/ && .AVIATION... (00Z TAFS) Issued at 643 PM CDT Wed May 29 2024 Afternoon activity is coming to an end with just some lingering TSRA over the far SE areas. Much of the TAF period will be VFR, but sites across our far S could see some MVFR vis or brief ceilings between 10-14z before VFR conditions return. /CME/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 66 84 67 88 / 30 40 30 30 Meridian 65 83 65 88 / 30 30 20 10 Vicksburg 67 85 68 87 / 40 50 40 40 Hattiesburg 68 89 67 90 / 50 30 20 20 Natchez 66 87 68 87 / 20 50 40 40 Greenville 69 84 69 87 / 30 50 30 40 Greenwood 67 83 67 87 / 30 40 20 30 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && $$ EC/NF/CME