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Severe weather possible for parts of Midwest, New England

There is a Slight Risk of severe thunderstorms Tuesday afternoon and evening across parts of the Midwest, from southeastern NE and extreme northeastern KS across northern MO and much of IA and into extreme portions of southeastern MN and southwestern WI. A Marginal Risk of severe thunderstorms extends from southwestern KS to northern MN and Lake Superior, as well as across northern New England.
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Current conditions at

St. Louis, Lambert-St. Louis International Airport (KSTL)

Lat: 38.75°NLon: 90.37°WElev: 604ft.

Partly Cloudy

99°F

37°C

Humidity 43%
Wind Speed Vrbl 3 mph
Barometer 29.95 in (1012.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index109°F (43°C)
Last update 28 Jul 1:51 pm CDT
Extended Forecast for

Saint Louis MO

Excessive Heat Warning until Tuesday 09:00pm
Click here for hazard details and duration
Excessive Heat Warning
  •  
    Excessive Heat Warning until Tuesday 09:00pm

    NOW until
    9:00pm Tue

    Excessive Heat Warning

  • This
    Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm.  Mostly sunny, with a high near 96. Heat index values as high as 117. Light and variable wind.

    Chance
    T-storms

    High: 96 °F

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 82. Light and variable wind.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 82 °F

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 91. Heat index values as high as 101. Light west wind becoming northwest 5 to 9 mph in the morning.

    Chance
    T-storms

    High: 91 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 67. Northwest wind 3 to 7 mph.

    Partly Cloudy

    Low: 67 °F

  • Thursday

    Thursday: Sunny, with a high near 87. Northwest wind 3 to 6 mph.

    Sunny

    High: 87 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 71.

    Mostly Clear

    Low: 71 °F

  • Friday

    Friday: Sunny, with a high near 89.

    Sunny

    High: 89 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 69.

    Mostly Clear

    Low: 69 °F

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 96. Heat index values as high as 117. Light and variable wind.
Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 82. Light and variable wind. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 101. Light west wind becoming northwest 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 67. Northwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 87. Northwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 71.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Mostly sunny, with a high near 90.
  Click Map For Forecast
Point Forecast:
Saint Louis MO
 38.62°N 90.23°W (Elev. 489 ft)
2:25 pm CDT Jul 28, 2015
2pm CDT Jul 28, 2015-6pm CDT Aug 3, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database