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Event Summary: August 15, 2025 Severe Line of Storms Impacts Eastern Iowa

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Mostly Cloudy

89°F

32°C

Humidity	74%
Wind Speed	S 9 mph
Barometer	30.01 in
Dewpoint	80°F (27°C)
Visibility	10.00 mi
Heat Index	106°F (41°C)
Last update	18 Aug 1:15 pm CDT

More Information:

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

Extended Forecast for

Mc Nabb IL

Severe T-storm Watch until August 18, 06:00pm

Heat Advisory until August 18, 07:00pm

Click here for hazard details and duration

Severe T-storm Watch

Heat Advisory

Severe T-storm Watch until August 18, 06:00pm
Heat Advisory until August 18, 07:00pm
NOW: Multiple hazards in effect
Click HERE for Details
This Afternoon
High: 89 °F
Chance
T-storms
Tonight
Low: 71 °F
Chance
T-storms
Tuesday
High: 87 °F
Chance
T-storms
Tuesday Night
Low: 68 °F
Partly Cloudy
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 61 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 60 °F
Clear

Detailed Forecast

This Afternoon

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 103. South wind around 10 mph.

Tonight

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind around 5 mph. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. West wind around 5 mph.

Tuesday Night

Partly cloudy, with a low around 68. North wind around 5 mph.

Wednesday

Mostly sunny, with a high near 80.

Wednesday Night

Mostly clear, with a low around 61.

Thursday

Sunny, with a high near 82.

Thursday Night

Clear, with a low around 60.