Still on the cloud line
Coastal flooding will continue to be an issue along Lake Maurepas, Lake Pontchartrain and the Lower Tickfaw River as southeast winds of 10-15mph persist today. Tides will run 2-3 feet above average. The same southeast winds leading to high water have maintained enough low-level moisture to keep a stubborn cloud deck west of I-55 through the weekend.
Today and Tonight: Monday will alas bring some sun—especially for eastern portions of the forecast area. Locations that receive more sun will make it into the upper 70s. Where clouds persist, the mid 70s are more likely. Winds will be southeast at 5-10mph. Overnight, lows will be in the low 60s.
Up Next: Chances for showers and thunderstorms will gradually increase from west to east Tuesday, Wednesday and Thursday. Primarily driven by daytime heating, activity will be scattered in nature. Highs will chug for the upper 70s and low 80s prior to the shower and storm development.
Forecast Discussion: An upper ridge continues to be the main player for the local weather pattern. Its presence will influence a continued dry pattern, squashing any convective development. In addition, a surface high pressure continues drooping southwestward into the Eastern U.S. which is also aiding a dry pattern, but can be blamed for the weekend and ongoing cloud deck. The onshore, east-southeast winds have added moisture to the air mass and this layer became trapped beneath the ridge of warmer air aloft. The stratus deck resulted and will remain stubborn, more so the farther west of I-55. By Wednesday, an upper low currently over West Texas, will slide farther east breaking down the ridge and destabilizing the atmosphere. Ironically, this may help to punch holes in the cloud deck but will also signal the return of afternoon showers and thunderstorms. Further western locations will see better coverage. The upper low is expected to kick east by the end of the week bringing a drier and sunnier pattern for the weekend.
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