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Tropical Storm Beta keeping threat of flooding rains through mid-week

Posted at 4:37 PM, Sep 21, 2020
and last updated 2020-09-21 23:52:38-04

10pn UPDATE...latest Tropical Storm Beta Advisory and forecast:

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A Flash Flood Watch remains in effect for all of Acadiana through Wednesday evening as meandering Tropical Storm Beta will keep the threat of flooding rains across Southern Louisiana and Acadiana.

Beta was getting closer to the Texas Coast late Monday but remains a poorly organized tropical storm with 45 mph winds.

The system has brought elevated tide levels and minor coastal flooding to the entire Louisiana coastline with water levels expected to remain near 1-3 feet above normal until the system begins to clear our area Thursday.

There will be two primary areas of flooding concern with Beta over the next few days...one near the core of the storm and wherever it goes , and the second in an outer rain band zone east of the storm that could bring even heavier rains compared to what may occur near the center.

Per the National Hurricane Center and the National Weather Service, total rainfall amounts will be in the 3-8" range for most of Acadiana through the next 72 hours...but there may be isolated areas reach up to 12-15" before all is said and done with this system.

The best bet for the highest rain totals will likely be across Southeastern Texas and across Southeastern Louisiana, but in this pattern forecasting specific rain totals is nearly impossible, but Monday's Euro model supports the aforementioned rainfall projections.

While rains will not be continuous, we are carrying high rain chances through Thursday...near 80% on any given day or night.

Typically in this type of tropical set-up, the heaviest rains will become most intense at night and during the morning hours, and less so during the latter part of the day into the early evening.

Beta is expected to hug the upper Texas Coast as a tropical storm through Tuesday and should begin to make a definitive move to the east-northeast Tuesday into Wednesday, bringing the system through the Acadiana area as a tropical depression Wednesday into Thursday.

While staying breezy over the next few days, we are not expecting damaging winds with whatever remnants of Beta move through here mid-week.

Finally by Friday, drier air is expected to filter into the region bringing back partly to mostly sunny skies into the weekend.

The best news of the day is that a robust cool front through the area in about a week's time...which could bring our lows down into upper 50s for mid-next week!

Stay with KATC, katc.com and social media for the latest on Tropical Storm Beta and the flooding rain threat.

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