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

Isaias to Bring Tropical Impacts Across to the East Coast

Isaias is forecast to make landfall tonight in the Carolinas with dangerous storm surge, flash flooding, damaging winds, and isolated tropical tornadoes. Isaias may strengthen briefly prior to landfall, but the impacts will be the same regardless of the categorical definition. Isaias impacts will be felt all along the East Coast as Isaias moves northward through mid-week. Read More >

Current conditions at

Galliano, South Lafourche Airport (KGAO)

Lat: 29.44°NLon: 90.26°WElev: 0ft.

Partly Cloudy

90°F

32°C

Humidity 55%
Wind Speed N 3 mph
Barometer 29.97 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 3 Aug 1:37 pm CDT
Extended Forecast for

Grand Isle LA

  • This
    Afternoon

    This Afternoon: Sunny, with a high near 89. Northwest wind around 10 mph becoming southwest.

    Sunny

    High: 89 °F

  • Tonight

    Tonight: Mostly clear, with a low around 81. West wind 10 to 15 mph.

    Mostly Clear

    Low: 81 °F

  • Tuesday

    Tuesday: Sunny, with a high near 90. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Sunny

    High: 90 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 80. West wind 5 to 10 mph.

    Mostly Clear

    Low: 80 °F

  • Wednesday

    Wednesday: Sunny, with a high near 89. Northwest wind around 5 mph becoming calm.

    Sunny

    High: 89 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 80. South wind around 5 mph.

    Mostly Clear

    Low: 80 °F

  • Thursday

    Thursday: Sunny, with a high near 87. Northwest wind around 5 mph becoming east in the morning.

    Sunny

    High: 87 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 81. South wind 5 to 10 mph.

    Mostly Clear

    Low: 81 °F

  • Friday

    Friday: Scattered showers and thunderstorms, mainly before 1pm. Sunny, with a high near 87. Southwest wind 5 to 10 mph becoming east in the morning.

    Scattered
    T-storms

    High: 87 °F

Detailed Forecast

This Afternoon
Sunny, with a high near 89. Northwest wind around 10 mph becoming southwest.
Tonight
Mostly clear, with a low around 81. West wind 10 to 15 mph.
Tuesday
Sunny, with a high near 90. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 80. West wind 5 to 10 mph.
Wednesday
Sunny, with a high near 89. Northwest wind around 5 mph becoming calm.
Wednesday Night
Mostly clear, with a low around 80. South wind around 5 mph.
Thursday
Sunny, with a high near 87. Northwest wind around 5 mph becoming east in the morning.
Thursday Night
Mostly clear, with a low around 81. South wind 5 to 10 mph.
Friday
Scattered showers and thunderstorms, mainly before 1pm. Sunny, with a high near 87. Southwest wind 5 to 10 mph becoming east in the morning.
Friday Night
Isolated showers and thunderstorms after 1am. Mostly clear, with a low around 81. Southeast wind around 10 mph.
Saturday
Scattered showers and thunderstorms. Mostly sunny, with a high near 87. South wind 5 to 10 mph becoming east in the morning.
Saturday Night
Isolated showers and thunderstorms. Partly cloudy, with a low around 81. South wind 5 to 10 mph.
Sunday
Scattered showers and thunderstorms. Mostly sunny, with a high near 88. West wind 5 to 10 mph becoming east in the afternoon.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Grand Isle LA
 29.23°N 89.99°W
Last Update:
1:15 pm CDT Aug 3, 2020
Forecast Valid:
1pm CDT Aug 3, 2020-6pm CDT Aug 9, 2020
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation