BATON ROUGE – A flash flood watch will continue through Sunday for an area including Livingston Parish, according to the National Weather Service (NWS), while a tornado watch declaration is possible Saturday.
Some streets were closed Saturday in Denham Springs, and the Amite River was less than 6 inches from its predicted crest at 3:30 p.m.
The Denham Springs Police Department closed River Road between Government Street and Lakeview Drive Friday night until further notice.
The river-side lane of River Road was covered in several areas.
The Livingston Parish Department of Homeland Security and Emergency Preparedness has closed all waterways to recreational traffic through the weekend due to rising waters and the large amounts of hazardous debris reported.
In the wake of the storms, Gov. John Bel Edwards declared a “State of Emergency” for all of Louisiana.
“Rainfall since Friday morning has exceeded 6 inches, possibly as high as 10 inches,” the NWS said, and “2 to 4 inches of additional rainfall. Rain rates at times will be 2 to 3 inches per hour.”
“Another round of storms will likely develop by this afternoon and push through this evening. Another wave will likely impact the area early Sunday into Sunday afternoon,” the agency said.
“Each will bring heavy rainfall, that could accumulate to several inches of rainfall on already saturated ground. As a result, the potential for flash flooding will be present.”
At 3:15 p.m. Saturday, the Amite River at Denham Springs was at 31.13, more than 2 feet above flood stage, according to the NWS’s Advanced Hydrologic Prediction Service.
Flood stage on the Amite at Denham Springs is 29 feet.
The hydrologic service is predicting the Amite will stay above 31 feet until 3 a.m. Tuesday when it will crest at 31.5 feet, then begin to go down.
The Amite crested at 46.5 feet in the Great Flood of 2016.
The hydrologic service also reported the following levels on the Amite River in three other locations:
• Amite River at Magnolia: 42.12 feet at 3:30 p.m. Flood stage is 48 feet. Crest is predicted at 43.9 feet at 2 p.m. Monday.
• Amite River at French Settlement: 3.27 feet at 3. Food stage is 4 feet. No predicted crest was given.
• Amite River at La. 22 at Maurepas: 3.53 feet at 3 p.m., an increase of 0.16.
The Amite River crested at 4.72 feet shortly after midnight, the service said. Flood stage is 4 feet.
The flash flood watch continues for Livingston, St. Helena. Ascension, East Baton Rouge, Assumption, East Feliciana, Iberville, Orleans, Pointe Coupee, Tangipahoa, St. Charles, St. Helena, St. James, St. John the Baptist, St. Tammany, Washington, West Baton Rouge and West Feliciana parishes.
It also includes upper Jefferson, Lafourche, Plaquemines, St. Bernard and Terrebonne parishes.
At 2:40 p.m., the Weather Service said, tropical airmass storms can produce rapidly developing, short-duration tornadoes.
“The area is currently under the influence of deep tropical moisture with several thunderstorms developing and re-developing,” the NWS said.
“Many of these storms exhibit short periods of rotation that are likely tropical funnel clouds. At times, these may lower to the ground to become weak, short-lived tornadoes.
“Though weak, they can still cause damage in short and narrow tracks,” the NWS said.