Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from August 17, 12:00 PM EDT until August 17, 08:00 PM EDT

Current conditions at

Greenville Spartanburg International Airport (KGSP)

Lat: 34.91°NLon: 82.21°WElev: 955ft.

Fair

77°F

25°C

Humidity	88%
Wind Speed	SW 3 mph
Barometer	30.03 in (1015.7 mb)
Dewpoint	73°F (23°C)
Visibility	9.00 mi
Heat Index	78°F (26°C)
Last update	17 Aug 7:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Duncan SC

Heat Advisory August 17, 12:00pm until August 17, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 97 °F
Hot
Tonight
Low: 75 °F
Partly Cloudy
Tuesday
High: 94 °F
Sunny
Tuesday Night
Low: 72 °F
Mostly Clear
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 72 °F
Mostly Clear
Thursday
High: 96 °F
Hot
Thursday Night
Low: 72 °F
Partly Cloudy
Friday
High: 93 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

Sunny and hot, with a high near 97. Heat index values as high as 105. Calm wind becoming southwest 5 to 7 mph in the afternoon.

Tonight

Partly cloudy, with a low around 75. West southwest wind around 6 mph becoming calm after midnight.

Tuesday

Sunny, with a high near 94. Heat index values as high as 103. North wind around 6 mph becoming calm in the afternoon.

Tuesday Night

Mostly clear, with a low around 72. North northeast wind around 7 mph.

Wednesday

Sunny, with a high near 94. North northeast wind around 5 mph becoming calm in the afternoon.

Wednesday Night

Mostly clear, with a low around 72.

Thursday

Sunny and hot, with a high near 96.

Thursday Night

Partly cloudy, with a low around 72.

Friday

A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 93.

Friday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

Saturday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

Saturday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Sunday

Mostly sunny, with a high near 90.