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Severe Thunderstorms and Heavy Rain in Upper Midwest

A slow moving frontal boundary from the central Pains to the Upper Midwest will bring a potential for severe thunderstorms and heavy rain. Rain amounts of 1-3 inches, with locally heavier amounts can be expected. The threat of severe weather moves into the Ohio Valley and Northeast on Tuesday. Monsoon moisture continues to bring the threat of flash flooding to the Southwest and southern Rockies. Read More >

Hazardous Weather Conditions

Current conditions at

Iowa City Municipal Airport (KIOW)

Lat: 41.64°NLon: 91.54°WElev: 650ft.

Fog/Mist

21°C

69°F

Humidity 93%
Wind Speed S 6 km/h
Barometer 1016.9 mb (30.04 in)
Dewpoint 19°C (67°F)
Visibility 10 km
Last update 21 Aug 4:52 am CDT
Extended Forecast for

West Branch IA

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms.  Patchy fog.  Otherwise, mostly cloudy, with a low around 19. Calm wind.

    Chance
    T-storms and
    Patchy Fog

    Low: 19 °C

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 9am.  Patchy fog before 9am.  Otherwise, mostly cloudy, with a high near 29. South wind 5 to 10 km/h increasing to 15 to 20 km/h in the afternoon.  Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.

    T-storms
    Likely and
    Patchy Fog
    then Chance
    T-storms

    High: 29 °C

  • Monday
    Night

    Monday Night: Showers and thunderstorms.  Low around 20. South wind 10 to 15 km/h becoming west after midnight.  Chance of precipitation is 80%. New rainfall amounts between 2 and 3 cm possible.

    T-storms

    Low: 20 °C

  • Tuesday

    Tuesday: Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 1pm.  Cloudy through mid morning, then gradual clearing, with a high near 26. Northwest wind 15 to 20 km/h, with gusts as high as 35 km/h.  Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.

    T-storms
    Likely then
    Slight Chance
    Showers

    High: 26 °C

  • Tuesday
    Night

    Tuesday Night: Clear, with a low around 13.

    Clear

    Low: 13 °C

  • Wednesday

    Wednesday: Sunny, with a high near 25.

    Sunny

    High: 25 °C

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 13.

    Partly Cloudy

    Low: 13 °C

  • Thursday

    Thursday: Mostly sunny, with a high near 24.

    Mostly Sunny

    High: 24 °C

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 13.

    Partly Cloudy

    Low: 13 °C

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 19. Calm wind.
Monday
Showers and thunderstorms likely, mainly before 9am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 29. South wind 5 to 10 km/h increasing to 15 to 20 km/h in the afternoon. Chance of precipitation is 60%. New rainfall amounts between 5 and 7.5 mm possible.
Monday Night
Showers and thunderstorms. Low around 20. South wind 10 to 15 km/h becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between 2 and 3 cm possible.
Tuesday
Showers and thunderstorms likely before 10am, then a slight chance of showers between 10am and 1pm. Cloudy through mid morning, then gradual clearing, with a high near 26. Northwest wind 15 to 20 km/h, with gusts as high as 35 km/h. Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.
Tuesday Night
Clear, with a low around 13.
Wednesday
Sunny, with a high near 25.
Wednesday Night
Partly cloudy, with a low around 13.
Thursday
Mostly sunny, with a high near 24.
Thursday Night
Partly cloudy, with a low around 13.
Friday
Mostly sunny, with a high near 25.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Mostly cloudy, with a low around 15.
Sunday
Partly sunny, with a high near 27.
Click Map For Forecast
Point Forecast:
West Branch IA
 41.66°N 91.35°W (Elev. 243 m)
4:45 am CDT Aug 21, 2017
5am CDT Aug 21, 2017-6pm CDT Aug 27, 2017
 
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