Marine Weather and Tide Forecast for Vidalia, LA

DISCUSSION
Issued at 353 AM CDT Sat Jul 25 2026

Through tonight: Our CWA will remain on the eastern periphery of a large high centered just east of the Four Corners region. Early morning satellite imagery/RAP analysis showed a shortwave trough stretching from the mid Mississippi valley back across the ArkLaTex.
This shortwave trough will continue sliding southeast today around the large high and bring low rain chances to our northern zones. Our PWATs got knocked down to just below and inch and a half per the 00Z Sat JAN sounding. With surface ridging across the Gulf states shifting south across the northern Gulf by tonight, low level moisture is expected to increase slightly. Local radars were currently quiet but the chance for rain is expected this morning in our northwest and gradually shift east across the Highway 82 corridor through this afternoon as the shortwave trough swings through. Some of the early model guidance was showing the potential heavy rain just to our northwest but rainfall amounts in our CWA are not expected to cause any runoff issues. The southern half of our CWA is expected to remain dry with heat and humidity remaining to be the main concern. The combination of temperatures in the 90s and high humidity will result in peak heat index values near 105F over most of the area today. /22/

Sunday through next Friday...

The perfect word to describe the forecast for the long term period would be 'HOT'. Dangerous heat stress conditions will be the primary focus for the long term as a strong, zonally oriented upper-level ridge continues to amplify over the western/central CONUS on Sunday.
Afternoon highs are forecasted to peak in the mid to upper 90s under mostly sunny skies. This, combined with dewpoints in the mid-70s, will allow for peak heat index values in excess of 105 degrees across much of the area. For this reason, an "Elevated" risk for dangerous heat will be advertised for most our area for Sunday including portions of southeast AR and all of our northeast LA parishes. Likewise, a heat advisory will likely be needed for most of our CWA heading into Sunday.

A slight chance for scattered to isolated showers and storms cannot be ruled out for portions of northeast and east MS Sunday afternoon.
Quiet weather conditions will prevail across our CWA heading into Sunday night with nighttime lows dipping into the mid 70s. Rain chances heading into the new work week will be limited by the ridge aloft, but a wave may pass through the area mid week and trigger some shower and thunderstorm activity.

"Elevated" to "Significant" heat stress will continue Monday through Thursday with temperatures forecasted to be in the upper 90s to near 100 degrees, along with heat index value readings in the 110 to 115 range areawide. An areawide heat advisory will likely be needed for Monday. A heat warning may eventually needed for a good portion of the area by Tuesday. If a heat warning is issued for Tuesday, it will likely start from the Delta and cover areas along and west of I- 55 including portions of southeast AR and all of our northeast LA parishes. As we go through the mid-week and heat stress continue to worsen, general thinking is to expand the heat warning further east across portions of southeast MS. As always, at this time of year, please make sure loved ones, neighbors, and pets have a cool place to spend the hot afternoons and warm nights. Heat trends will continue to be closely monitored as we get closer.

Scattered showers and storms will start to increase across much of the area heading into Friday. There will be slight higher rain chances across the area (30-45%) on Saturday which could help bring some brief relief from the heat. /CR/

AVIATION
(06Z TAFS)
Issued at 1251 AM CDT Sat Jul 25 2026

VFR conditions wl prevail through the TAF period central and south. In the north there is a low chance of MVFR conditions developing 10-13Z and isolated to scattered SHRA may come in vcty of the TAF sites after 15Z and continuing through the aftn. /22/

PRELIMINARY POINT TEMPS/POPS
Jackson 93 75 95 75 / 0 10 10 0 Meridian 94 75 94 76 / 10 10 20 0 Vicksburg 92 76 95 77 / 0 10 0 0 Hattiesburg 96 76 96 76 / 0 0 0 0 Natchez 94 75 96 75 / 0 0 0 0 Greenville 90 76 95 76 / 30 10 10 0 Greenwood 91 75 95 75 / 20 10 20 0

JAN WATCHES/WARNINGS/ADVISORIES
MS...None.
LA...None.
AR...None.