Heavy Rainfall and Severe Thunderstorms in the Midwest and Ohio Valley Tuesday

Multiple rounds of severe thunderstorms appear likely Tuesday across the Midwest and Ohio Valley, with severe wind gusts in excess of 75 mph as the primary threat. Heavy to excessive rainfall may lead to considerable flash and urban flooding impacts Tuesday across portions of the Ohio Valley. A Moderate Risk (level 3 of 4) of excessive rainfall has been issued. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

77°F

25°C

Humidity	83%
Wind Speed	E 10 mph
Barometer	29.88 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	10 Aug 9:15 pm CDT

More Information:

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

Extended Forecast for

16 Miles NW Agar SD

Severe T-storm Watch until August 11, 03:00am

Click here for hazard details and duration

Severe T-storm Watch

Severe T-storm Watch until August 11, 03:00am
NOW until 3:00am Tue
Severe T-storm Watch
Tonight
Low: 61 °F
Severe
Thunderstorms
Tuesday
High: 85 °F
Partly Sunny
then Patchy
Smoke
Tuesday Night
Low: 61 °F
Chance
T-storms
Wednesday
High: 80 °F
Mostly Sunny
then Chance
Showers
Wednesday Night
Low: 58 °F
Showers
Likely
Thursday
High: 72 °F
Chance
Showers
Thursday Night
Low: 56 °F
Chance
T-storms
Friday
High: 70 °F
Showers
Likely

Detailed Forecast

Tonight

A chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Patchy smoke between 10pm and 1am. Mostly cloudy, with a low around 61. East wind 7 to 10 mph. Chance of precipitation is 30%.

Tuesday

Patchy smoke after noon. Partly sunny, with a high near 85. Northeast wind 7 to 9 mph.

Tuesday Night

A chance of showers and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 61. Northeast wind 6 to 10 mph. Chance of precipitation is 40%.

Wednesday

A chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Increasing clouds, with a high near 80. East northeast wind 6 to 10 mph. Chance of precipitation is 30%.

Wednesday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Cloudy, with a low around 58. East northeast wind around 11 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday

A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 72. East northeast wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 56. East wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

Friday

Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 70. East southeast wind around 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Southeast wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

Saturday

A chance of showers before 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.

Saturday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 20%.

Sunday

A slight chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 20%.

Sunday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

Monday

A slight chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 20%.