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

Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Smith Regional Airport (KFSM)

Lat: 35.33°NLon: 94.37°WElev: 436ft.

Fair

85°F

29°C

Humidity 65%
Wind Speed SW 5 mph
Barometer 30.12 in (1019.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 15 Aug 7:53 am CDT
Extended Forecast for

Lavaca AR

Heat Advisory August 15, 08:08am until August 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 15, 08:08am until August 16, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • Today

    High: 101 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 78. South wind 5 to 10 mph becoming light after midnight.

    Low: 78 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 104. Heat index values as high as 110. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 104 °F

    Hot

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 103. Calm wind becoming west around 5 mph in the morning.

    High: 103 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. West wind around 5 mph becoming calm in the evening.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 101. Heat index values as high as 109. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Tonight
Clear, with a low around 78. South wind 5 to 10 mph becoming light after midnight.
Sunday
Sunny and hot, with a high near 104. Heat index values as high as 110. Light south wind becoming southwest 5 to 10 mph in the morning.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny and hot, with a high near 103. Calm wind becoming west around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 74. West wind around 5 mph becoming calm in the evening.
Tuesday
Sunny and hot, with a high near 103. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 78. South wind around 5 mph.
Wednesday
Sunny and hot, with a high near 104. Light south wind becoming southwest 5 to 10 mph in the morning.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 76. South wind around 5 mph becoming east after midnight.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 99. East wind around 5 mph becoming west in the afternoon.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74. East wind around 5 mph.
Friday
Sunny, with a high near 98. East wind 5 to 10 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lavaca AR
 35.34°N 94.17°W
Last Update:
7:56 am CDT Aug 15, 2026
Forecast Valid:
8am CDT Aug 15, 2026-6pm CDT Aug 21, 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