A HEAT ADVISORY will be in effect from 10 a.m. - 7 p.m. Wednesday for many around the Capital Area, including East Baton Rouge, West Baton Rouge, Ascension, Iberville, East Feliciana, Livingston, Pointe Coupee, St. Helena, St. James, Tangipahoa, and West Feliciana Parishes as well as, Amite and Wilkinson Counties. Expect feels-like temperatures as hot as the 105-110° range for several hours during the afternoon. Drink plenty of fluids, wear light clothing, and take breaks during the hottest parts of the day.
Today & Tonight: Wednesday marks the final day of our typical summertime pattern before big changes arrive. Expect hot conditions with highs in the mid-90s, and feels-like temperatures reaching 105–110° at times—stay hydrated! As deep moisture moves in from the Gulf, clouds will increase Wednesday afternoon, as well as rain coverage. Isolated storms will be possible this afternoon with a gradual increase in rain coverage overnight. Overnight conditions will be very warm and humid, with lows in the 70s.
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, Tangipahoa, and West Feliciana Parishes. It will go into effect Wednesday afternoon and last through Friday night. 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.
Up Next: The weather will take on a tropical influence by the end of the week as a tropical wave brings extreme moisture amounts to south Louisiana. This will lead to several days in a row of very high rain coverage beginning late Wednesday through the weekend. Rainfall totals of 2–5" are likely, with locally higher amounts possible, especially near the coast. Some bullseyes near 10" will be possible. Isolated flash flooding cannot be ruled out due to the chance of heavy rains over three days. Exactly where the heaviest rain falls is still being determined, so make sure to check in often for new information. More on the system's potential development is outlined below.
The Tropics: (Wednesday 7 a.m. Update) Surface and radar observations indicate that a broad area of low pressure is moving westward across the Florida Panhandle between Tallahassee and Panama City. The associated shower and thunderstorm activity is disorganized and located mainly south and southwest of the center. This system is forecast to continue moving westward, and could emerge or redevelop over the far northeastern to north-central portion of the Gulf later today or tonight, reaching the coast of Louisiana by Thursday. If this system moves far enough offshore, environmental conditions over the Gulf appear generally favorable for additional development, and a tropical depression could still form over the next couple of days before the system moves fully inland by the end of the week.
Regardless of development, heavy rainfall could cause flash flooding for portions of the north-central Gulf Coast beginning late today and continuing through Friday.
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– The Storm Station
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