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Severe Storms and Flash Flooding in the Midwest: Critical Fire Weather Threats in the West

Strong to severe storms with damaging winds, large hail, and locally heavy rain will be possible from the Central Plains to the Mid-South and the Great Lakes as a cold front moves eastward. An organized area of thunderstorms may produce a greater severe threat, including a derecho with winds up to 100 mph across parts of Iowa, Illinois, and southern Wisconsin. Read More >

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

A Few Clouds

92°F

33°C

Humidity 41%
Wind Speed Vrbl 3 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 10 Aug 3:56 pm EDT
Extended Forecast for

Duncannon PA

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 69. Light south wind.

    Mostly Clear
    then Patchy
    Fog

    Low: 69 °F

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Patchy Fog
    then T-storms
    Likely

    High: 90 °F

  • Tuesday
    Night

    Tuesday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely then
    Slight Chance
    Showers

    Low: 70 °F

  • Wednesday

    Wednesday: A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    Showers then
    Showers
    Likely

    High: 91 °F

  • Wednesday
    Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    Low: 70 °F

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    Showers
    Likely

    High: 87 °F

  • Thursday
    Night

    Thursday Night: Showers likely, with thunderstorms also possible after 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Showers
    Likely then
    Chance
    T-storms

    Low: 70 °F

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    Chance
    Showers then
    Showers
    Likely

    High: 84 °F

  • Friday
    Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

    Showers
    Likely then
    Chance
    T-storms

    Low: 69 °F

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 69. Light south wind.
Tuesday
Showers and thunderstorms likely, mainly after 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 90. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely, with thunderstorms also possible after 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
Last Update:
2:47 pm EDT Aug 10, 2020
Forecast Valid:
4pm EDT Aug 10, 2020-6pm EDT Aug 17, 2020
 
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Additional Resources

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Chance of Precipitation