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Baton Rouge, Louisiana
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Sunday PM Forecast: Near-record heat early week, eyes on next storm system

14 hours 42 minutes 2 seconds ago Sunday, April 27 2025 Apr 27, 2025 April 27, 2025 4:57 PM April 27, 2025 in Forecast Discussion
Source: The Storm Station

Moving into next week, the heat will continue to be the main story, with new records possible. This changes at the end of the week, as we observe an uptick in rain chances. 

Tonight & Tomorrow: Expect mostly clear conditions in the overnight hours, with lows near 66 degrees. Once again, some areas of fog will be possible. Monday will be very warm and dry. Highs will reach to near 90 degrees, possibly tying or breaking the record high for the day. As for rain, none is expected, but we will observe partly sunny skies. 

Up Next: This same exact pattern will also continue into Tuesday, before we start to see changes. Clouds will begin to build Wednesday, as the high pressure previously affecting us begins to break down. Moisture in the atmosphere will increase as well, and it will be sufficient for showers and storms starting Thursday. Another round will be possible Friday as a weak front enters the area. No significant temperature drop is expected, but humidity might slightly lower over the weekend. Rain chances should generally lower as well, but some slight chances will still be maintained. 


River Flooding: The National Weather Service has issued a RIVER FLOOD WARNING for the Mississippi River at Red River Landing, Baton Rouge, Donaldsonville, and Reserve, as well as the Atchafalaya River at Morgan City until further notice.

• At Red River Landing, flood stage is at 48 feet. Moderate flooding is already occurring. A crest of 59.8 feet is expected around April 30. At this level, the east bank levee will be topped, and the prison farmland between the two levees will be inundated. Angola Landing will be under water, closing the ferry there. All river islands along the reach from Red River Landing to Baton Rouge will remain inundated with recreational camps and river bottom farmland under water. This gauge will fall below flood stage around May 14.

• At Baton Rouge, flood stage is 35 feet. Major flood stage has been reached, with a crest at 42.5 feet expected on May 1. Around these levels, the grounds of the older part of Louisiana State University's campus become soggy. This includes the area around the Veterinary Medicine building, the Veterinary Medicine Annex, and Alex Box Stadium. Levees protect the city of Baton Rouge and the main LSU campus at this level. Caution is urged when walking near riverbanks. This gauge will fall below flood stage around May 12.

• At Donaldsonville, the flood stage is at 27 feet. Moderate flooding will begin shortly. Moderate flooding with a crest of 31.2 feet is expected around May 1. Around these levels, navigation becomes difficult for smaller river craft. Safety precautions for river traffic are urged. After cresting, the river will fall below flood stage around May 11.

• At Reserve, flood stage is at 22 feet. Minor flooding is already occurring. A crest of 23.8 feet is expected around May 1. Around these levels, slow-bell procedures will be enacted for river transportation. After cresting, the river will fall below flood stage around May 9.

• At Morgan City, flood stage of 6 feet will be reached by Saturday. Moderate flooding with a crest of 7 feet is forecast on May 3. At 7 feet, buildings at the foot of Ann Street on the riverside of the flood wall will flood as water overtops the Rio Oil Company dock. Buildings on the riverside of the Berwick floodwall will flood. River traffic restrictions will be strictly enforced. In addition, backwater flooding could potentially impact portions of areas around Lake Palourde and Stephensville.


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-- Balin

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