Area Forecast Discussion
Issued by NWS Jackson, MS
Issued by NWS Jackson, MS
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412 FXUS64 KJAN 300903 AFDJAN Area Forecast Discussion National Weather Service Jackson MS 403 AM CDT Tue Apr 30 2024 ...New DISCUSSION... .DISCUSSION... Issued at 359 AM CDT Tue Apr 30 2024 Today and tonight... Fog has developed across the area under clear skies in the wake of a shortwave and will likely persist through the night and into early morning. Fog will begin to mix to a low stratus deck before lifting later this morning. Clouds will gradually clear this afternoon. High temperatures should reach the mid 80s. Quiet conditions continue tonight under the influence of upper ridging and surface high pressure. This should allow temperatures to drop to the low 60s across the area tonight./SAS/ Wednesday through Monday: Warmer than normal through the period with disturbed weather as the southern branch of the jet stream meanders over the region combining with a few stalled boundaries. Come Wednesday morning shortwave ridging aloft will be over our region while a surface high will be centered over the Appalachians and ridging back across our CWA. Wl start out rather dry with PWATs less than an inch but the ridging aloft and the surface high will shift east through the day resulting in a decent return flow. PWATs will increase to nearly an inch and a half across the southwest and daytime heating will lead to a chance of showers and thunderstorms during the afternoon. This activity should see a distinct diurnal trend and dissipate by early evening. Thursday a northern stream disturbance will help develop a nearly stacked low over the northern Plains. This system will drop a cold front our way. In addition a southern stream disturbance moving out of the southern Plains may develop an mcs by Thursday afternoon over east Texas that may edge into our western zones before dissipating. Rain chances will increase over our west and northwest zones Thursday and Thursday night. The cold front is expected to drop into our CWA Friday and lead to greater rain chances across our whole CWA but the greatest rain chances will be across the northwest half of the CWA. The stalled cold front will still be over our CWA Saturday when another northern stream disturbance tries to drop a boundary into our CWA. This boundary looks to stall across the northern portions of our CWA. Friday night into Monday morning rain chances will likely be confined to the north of Interstate 20 while our southern zones remain dry. Highest afternoon temperatures are expected across our southern zones that may top out near 90F each afternoon Saturday through Monday. /22/ && .AVIATION... (06Z TAFS) Issued at 1246 AM CDT Tue Apr 30 2024 Some patchy dense fog is beginning to develop at some sites, mostly across central parts of the area. This should continue to increase throughout the night under mostly clear skies. By daybreak, this fog layer should lift to a low stratus deck with IFR/LIFR ceilings. ceilings should lift to MVFR/VFR by mid to late morning, with skies clearing in the afternoon./SAS/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 84 62 88 64 / 0 0 20 10 Meridian 85 60 88 62 / 0 0 10 0 Vicksburg 85 62 88 65 / 0 0 20 10 Hattiesburg 87 63 89 64 / 0 0 10 0 Natchez 86 63 87 65 / 0 10 30 0 Greenville 84 64 87 66 / 0 0 10 10 Greenwood 84 63 88 65 / 0 0 10 0 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && $$ SAS20/22/SAS20