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9/19/2024
WT Staff
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September 19, 2024 135 pm CDT
High concentration HAB takes over Lake Salvador
WT HAB Tracker from the satellite monitoring program of National Centers for Coastal Ocean Science (NCCOS)
The latest image of Lake Pontchartrain and the southeast water bodies is dated Sep 18, taken at wind speed 2.1 mph. This image is mostly clear offering a view of a big change in the Lake Salvador HAB over the prior twenty-four hours. HAB growth appeared in Lake Salvador a week ago, beginning in the west half of the water body. The bloom is now lakewide, escalated in concentration above 1 million cells per ml with a hot spot occurring in the northeast above 2 million cells per ml. Lake Verret widespread HAB is gatherined in the south end of the lake, still up around 1 million cells per ml. Lake Palourde shows two distinct HABs in this latest image, one localized at the west shore at 1 million cells per ml, another localized along the east shore at 200 to 300 thousand cells per ml. Black Bay is widespread with red tide around the 800 thousand to 1 million cells per ml concentration. Bayou Fortier and Lac des Allemands are cloud obscured in this image. Lakes Maurepas and Pontchartrain are well in view, these large water bodies remain HAB free another day as they have much of this season. See the latest satellite image of southeast LA water bodies, here.
Streamflow Situation from the network of USGS streamflow gauges in Louisiana
Another clear sunny day in New Orleans, the National Weather Service all quiet with no hazardous weather outlooks in effect for Louisiana. Checking in with the National Hurricane Center in Miami, FL to see what may be developing in the Caribbean and or Atlantic in the next week or two, NHC reporting remnants of Tropical Depression Gordon hanging around as disorganized showers and thunderstorms located over the central subtropical Atlantic. Some development of this system is still possible over the next several days, a low chance of this system reorganizing in the next 48 hours. NHC has eyes on another area, this one in the Caribbean, that could develop a broad low pressure system capable of forming a Tropical Depression over the next week. The chance of formation here is set at medium, 40 percent. The National Oceanographic and Atmospheric Administration (NOAA) expects ten or more hurricanes yet this season, 4 to 7 of these could be Category 3 or higher. More to follow.
Normal to much above seasonal normal flows dominate through all the watershed regions of Louisiana Thursday. Region 3 in the north along Arkansas border is the exception again today, three stations here sending below normal to low water levels, holding a severe drought condition in place along the Tensas River channel down through East Carroll, Madison and Tensas Parishes' western edges. Union, Ouachita, Caldwell and Catahoula Parishes are rated below normal today. The rest of Louisiana surface area is drought-free. No extreme high flows or flooding occurring in the reference network, no 1st percentile low flows.
See the latest Safe Drinking Water Act compliance stats for Louisiana here, including the US EPA list of serious violators.
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