Severe Thunderstorms in the Southeast U.S. Saturday; Flash Flooding Threat for the Northern Gulf Coast

Isolated to scattered severe thunderstorms appear possible across portions of the Southeast and Carolinas on Saturday where a Slight Risk (Level 2 of 5) has been issued. A Slight Risk Excessive Rainfall Outlook (Level 2 of 4) has been issued for part of the northern Gulf Coast Saturday due to the threat of flash, urban, and riverine flooding. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Mostly Cloudy

79°F

26°C

Humidity 62%
Wind Speed SW 7 mph
Barometer 29.89 in (1011.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 18 May 11:53 am CDT
Extended Forecast for

4 Miles WSW Mascoutah IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 64. Light southeast wind.

    Low: 64 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am.  Otherwise, sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 65. Southeast wind around 6 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 87. South wind 6 to 10 mph.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am.  Partly cloudy, with a low around 69.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 90.

    High: 90 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Calm wind.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 64. Light southeast wind.
Sunday
Patchy fog before 7am. Otherwise, sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 65. Southeast wind around 6 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. South wind 6 to 10 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 90.
Tuesday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 50%.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Mascoutah IL
 38.5°N 89.87°W (Elev. 449 ft)
10:37 am CDT May 18, 2024
1pm CDT May 18, 2024-6pm CDT May 24, 2024
 
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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