National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Slidell, Slidell Airport (KASD)

Lat: 30.34°NLon: 89.82°WElev: 30ft.

Mostly Cloudy

75°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 29.85 in (1010.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 16 Jun 5:53 pm CDT
Extended Forecast for

4 Miles E Mandeville LA

Flood Watch June 16, 06:27pm until June 19, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 16, 06:27pm until June 19, 07:00am

    NOW until 7:00am Fri

    Flood Watch

  • Tonight

    Low: 74 °F

    Chance
    T-storms and
    Patchy Fog
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Mostly cloudy, with a high near 88. South wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 77. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 77 °F

    Chance
    T-storms then
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 88. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    High: 88 °F

    Showers then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 78. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 78 °F

    T-storms
    Likely then
    Showers
    Likely

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 92. Southwest wind around 5 mph. Chance of precipitation is 70%.

    High: 92 °F

    Showers
    Likely then
    T-storms
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 91 °F

    Showers
    Likely then
    T-storms
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog before 7pm. Otherwise, mostly cloudy, with a low around 74. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms after 7am. Mostly cloudy, with a high near 88. South wind 5 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 77. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers and possibly a thunderstorm before 1pm, then showers and thunderstorms after 1pm. High near 88. South wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Thursday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 78. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Juneteenth
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly sunny, with a high near 92. Southwest wind around 5 mph. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Partly sunny, with a high near 91. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 77. South wind around 5 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 79. South wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 95. Southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 79. South wind around 5 mph.
Tuesday
A slight chance of showers and thunderstorms. Sunny and hot, with a high near 95. West wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Mandeville LA
 30.35°N 90.02°W
Last Update:
5:18 pm CDT Jun 16, 2026
Forecast Valid:
6pm CDT Jun 16, 2026-6pm CDT Jun 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation