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

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Hazardous Weather Conditions

Current conditions at

Patterson Memorial (KPTN)

Lat: 29.72°NLon: 91.33°WElev: 10ft.

Partly Cloudy

N/A

Humidity NA
Wind Speed NE 5 mph
Barometer 29.94 in
Dewpoint N/A
Visibility 10.00 mi
Last update 6 Sep 12:56 pm CDT
Extended Forecast for

Amelia LA

Heat Advisory September 7, 11:00am until September 7, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 100. West wind around 5 mph.

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.

    Low: 78 °F

    Mostly Clear

  • Labor Day

    Labor Day: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming northwest around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 10 percent chance of showers after 5am. Partly cloudy, with a low around 77. Calm wind.

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming east around 5 mph. Chance of precipitation is 80%.

    High: 91 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 77. Calm wind. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 89. Calm wind becoming east around 5 mph. Chance of precipitation is 80%.

    High: 89 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    T-storms
    Likely

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 90. Heat index values as high as 100. West wind around 5 mph.
Tonight
Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.
Labor Day
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 105. Calm wind becoming northwest around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 10 percent chance of showers after 5am. Partly cloudy, with a low around 77. Calm wind.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Calm wind becoming east around 5 mph. Chance of precipitation is 80%.
Tuesday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 77. Calm wind. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 89. Calm wind becoming east around 5 mph. Chance of precipitation is 80%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Calm wind.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph. Chance of precipitation is 70%.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 77.
Friday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 77.
Saturday
Showers and thunderstorms likely. Mostly sunny, with a high near 90. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Amelia LA
 29.65°N 91.1°W
Last Update:
1:21 pm CDT Sep 6, 2026
Forecast Valid:
1pm CDT Sep 6, 2026-6pm CDT Sep 12, 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