Severe Thunderstorms and Flash Flooding in the Central U.S.; A Dangerous Heatwave Coming to the West

A slow moving cold front will bring multiple rounds of widespread heavy rain, localized flash flooding, and severe thunderstorms from the central Plains into the Great Lakes through Saturday. A dangerous heatwave with record breaking and triple digit temperatures is expected this weekend into next week over the Northwest U.S. Excessive Heat Watches and Warnings have been issued. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

77°F

25°C

Humidity 88%
Wind Speed SE 10 mph
Barometer 29.94 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Jun 11:55 pm CDT
Extended Forecast for

Pontoon Beach IL

Flash Flood Watch until June 26, 07:00am
Tornado Watch until June 25, 04:00am
Click here for hazard details and duration
Flash Flood Watch
Tornado Watch
  •  
    Flash Flood Watch until June 26, 07:00am
    Tornado Watch until June 25, 04:00am

    NOW: Multiple
    hazards in effect

    Click HERE for Details

  • Overnight

    Overnight: Showers and thunderstorms, mainly after 2am. Some storms could be severe, with large hail, damaging winds, and heavy rain.  Low around 74. South wind 9 to 13 mph.  Chance of precipitation is 80%.

    Severe
    Thunderstorms

    Low: 74 °F

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 3pm. Some of the storms could produce heavy rain.  Cloudy, with a high near 90. Heat index values as high as 101. South wind 10 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%.

    Heavy Rain

    High: 90 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rain.  Low around 75. South wind around 11 mph.  Chance of precipitation is 80%.

    Heavy Rain

    Low: 75 °F

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 93. Heat index values as high as 100. South wind 10 to 15 mph, with gusts as high as 24 mph.

    Chance
    T-storms

    High: 93 °F

  • Saturday
    Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. South wind 7 to 13 mph, with gusts as high as 20 mph.

    Chance
    T-storms

    Low: 74 °F

  • Sunday

    Sunday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 90. Chance of precipitation is 70%.

    Chance
    T-storms then
    T-storms
    Likely

    High: 90 °F

  • Sunday
    Night

    Sunday Night: Showers and thunderstorms likely, mainly before 1am.  Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 72 °F

  • Monday

    Monday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 88. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 88 °F

Detailed Forecast

Overnight
Showers and thunderstorms, mainly after 2am. Some storms could be severe, with large hail, damaging winds, and heavy rain. Low around 74. South wind 9 to 13 mph. Chance of precipitation is 80%.
Friday
Showers and thunderstorms likely, mainly after 3pm. Some of the storms could produce heavy rain. Cloudy, with a high near 90. Heat index values as high as 101. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Friday Night
Showers and thunderstorms, mainly before 3am. Some of the storms could produce heavy rain. Low around 75. South wind around 11 mph. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 93. Heat index values as high as 100. South wind 10 to 15 mph, with gusts as high as 24 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind 7 to 13 mph, with gusts as high as 20 mph.
Sunday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Tuesday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Click Map For Forecast
Point Forecast:
Pontoon Beach IL
 38.73°N 90.06°W (Elev. 423 ft)
12:11 am CDT Jun 25, 2021
12am CDT Jun 25, 2021-6pm CDT Jun 30, 2021
 
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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