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5/3/2024
WT Staff
HAPPENING NOW
Sabine River resumes flooding near Bon Wier, Bayou Dorcheat flooding near Springhill
NWS: Heavy rain for northwest and north central LA
Water news for Friday, May 3, 2024 updated 1235 pm CDT
National Weather Service Hazardous Weather Outlook issued 556 am May 3
Scattered to numerous showers and thunderstorms will impact portions of northwest and north central Louisiana today. The stronger storms will have the capability of producing strong wind gusts and small hail. An isolated severe thunderstorm cannot be ruled out. Look for locally heavy rainfall with the stronger storms today as well.
Scattered to numerous thunderstorms will be possible through upcoming weekend and into at least the middle part of next week. There will be a threat for strong to severe thunderstorms each day with the
greatest threats coming on Tuesday into Wednesday with the approach of our next storm system. While details concerning specific thunderstorm risks are still difficult to determine so far out in
the forecast, damaging wind gusts, large hail and locally heavy downpours, at the very least, are a strong possibility Tuesday into Wednesday across portions of the Four State Region.
Impacting Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-Grant-Caldwell-La Salle Parishes.
WT USA Flows and Flood Tracker provisional data from the network of USGS streamflow monitors
Ninety-three streamflow gauges record flooding in the USA Friday, up from sixty-eight on Thursday. WT tracks the nation's most common natural disaster dynamics through the states of New York, Ohio, Georgia and Louisiana. As of this report there are five active floodings recorded in Louisiana.
In the northwest, watershed Region 1 Bayou Dorcheat is back on the flood sheet Friday, the monitor recording provisional readings near Springhill indicating flood stage breached around 10 pm last night, currently heading up to two inches over flood stage. Bayou Bodcau continues to flood near Shreveport, still on a slowing trend and down a couple of inches in the last twenty four hours. A high flow 99th percentile is recorded on Cypress Bayou near Keithville, the flood stage is not established here.
Sabine River is back to flooding near Bon Wier, TX as of around 530 am CDT this morning, currently an inch over flood stage on a rising trend. Sabine River continues to flood in the lower end near Ruliff, TX, no change to the water level there in the last twenty four hours. Calcasieu River is up overnight near Glenmora in Region 4, running a foot and four inches over flood stage. For details, click here.
Harmful Algal Bloom HAB monitoring satellite monitoring program of the National Centers for Coastal Ocean Science (NCCOS)
The latest satellite image from NCCOS was captured May 2 at a surface wind speed of 4.8 mph. This image is largely cloud obscured. Part of the Black Bay HAB is visible, appearing higher in concentration than the previous image. An image captured May 1 at 3.9 mph offered a clear view of the southeast water bodies showing lakewide, high concentration HAB activity in Lac des Allemands and Bayou Fortier, click here for more details.
As many drinking water facilities are supplied from surface water reservoirs, the streamflow situation is pertinent to both drinking water supply and quality. High flows can stir up sediment and cause turbidity in the reservoirs, requiring additional treatments to render the water potable. Low flow volume is linked to warmer temperatures in the reservoir and can be an issue for water quality where HABs are present. WT tracks streamflow trends with an eye to the impacts on drinking water supply and quality in each of the state's watersheds. Check the watershed layer on the map to see the direction of flow and streamflows that may be impacting drinking water today.
USGS Provisional Data Statement
Data are provisional and subject to revision until they have been thoroughly reviewed and received final approval. Current condition data relayed by satellite or other telemetry are automatically screened to not display improbable values until they can be verified.
Provisional data may be inaccurate due to instrument malfunctions or physical changes at the measurement site. Subsequent review based on field inspections and measurements may result in significant revisions to the data.
Data users are cautioned to consider carefully the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information concerning the accuracy and appropriate uses of these data or concerning other hydrologic data may be obtained from the USGS.
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