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Tuesday Midday Video Forecast
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The National Weather Service has issued a FLOOD WATCH for East Baton Rouge, West Baton Rouge, Ascension, Assumption, Iberville, East Feliciana, Livingston, Pointe Coupee, St. Helena, St. James, St. Mary, Tangipahoa, and West Feliciana Parishes as well as, Amite and Wilkinson Counties starting Tuesday evening and lasting through Thursday evening.
A FLOOD WATCH means conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. Be on the lookout for threatening weather conditions and listen for later statements and possible warnings. For more on flooding safety, CLICK HERE.
Multiple rounds of heavy rain will begin on Tuesday evening. Three to five inches of rain are likely though Thursday night across the area, with up to 10" possible. Locally higher amounts are possible. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Scroll down for additional forecast information.
In addition, the National Weather Service has issued a TORNADO WATCH for East Baton Rouge, West Baton Rouge, Ascension, Assumption, Iberville, East Feliciana, Livingston, Pointe Coupee, St. Helena, St. Mary, St. James, Tangipahoa, and West Feliciana Parishes as well as, Amite and Wilkinson Counties until 1 a.m. Wednesday.
A TORNADO WATCH means conditions are favorable for tornadoes and/or damaging winds in and around the watch area. Be on the lookout for threatening weather conditions and listen for later statements and possible warnings. If a Tornado Warning is issued, seek shelter in a low-level, interior room of a sturdy building. Take pets (on a leash) with you, have on hard-soled shoes, monitor storm coverage on a wireless device, and cover your head in the event of wind or tornado impact. For more on tornado safety, CLICK HERE.
Scattered to numerous thunderstorms will develop and move into the region through the evening and early overnight hours. Isolated tornadoes are possible with the most intense thunderstorms, as well as damaging wind gusts and large hail.
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Tonight: Rain coverage and intensity will increase after sunset as an organized complex of thunderstorms moves into the I-10/12 corridor. The threat of severe weather is not off the table, as some thunderstorms could cause gusty winds, large hail, and possibly a brief spin-up tornado. However, heavy rain is the primary concern for much of the night. Rain rates will be intense at times, and thunderstorms could repeat over the same locations. Several inches could fall in a few locations. As a result, flash flooding is possible, with areas affected experiencing poor drainage flooding and rapid rises on smaller creeks and streams. Allow extra time for the morning commute in case of road closures, and be cautious of any flooded roads. Do not attempt to drive through floodwater. Temperatures will bottom in the upper 60s.
Wednesday: The showers and thunderstorms are expected to linger into early Wednesday but may well use up most of the energy in the atmosphere, allowing for a break in the action by afternoon. Mainly cloudy skies will remain as temperatures hover in the upper 70s. Don’t get too comfortable in any dry time—more rain will be on the way. There is some uncertainty as to when the next round of showers and thunderstorms will develop. A weak impulse in the atmosphere could reasonably set off some more activity during the evening or overnight, but it is also plausible that there is not enough energy for storms until the atmosphere recharges and a stronger impulse arrives.
Up Next: Another round of showers and thunderstorms will spark in response to an impulse in the atmosphere pushing a front south across the region late Thursday into Friday. At that point, any extra rain would aggravate the flash flood risk due to previously saturated soils. Friday brings lower coverage in showers and thunderstorms, but still 40% of the 13 Parish, 2 County Area is pegged for measurable rain. New to the forecast, isolated showers and thunderstorms have been added for Saturday and Sunday as well, thanks to some lingering energy into the weekend. Though the flood threat should be lower, some hail may occur in any storms. By early next week, expect some drier times with more sunshine, lower humidity, and comfortable temperatures.
River Flooding: The National Weather Service has issued a RIVER FLOOD WARNING for the Mississippi River at Red River Landing, Baton Rouge, and Donaldsonville, the Atchafalaya River at Morgan City, and the Tangipahoa River at Robert. For the latest levels and forecasts, CLICK HERE.
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