Isaias to Bring Tropical Impacts Across to the East Coast

Isaias is forecast to make landfall tonight in the Carolinas with dangerous storm surge, flash flooding, damaging winds, and isolated tropical tornadoes. Isaias may strengthen briefly prior to landfall, but the impacts will be the same regardless of the categorical definition. Isaias impacts will be felt all along the East Coast as Isaias moves northward through mid-week. Read More >

Current conditions at

Harrisburg, Capital City Airport (KCXY)

Lat: 40.22°NLon: 76.86°WElev: 335ft.

Fair

81°F

27°C

Humidity 54%
Wind Speed SW 7 mph
Barometer 30.06 in (1017.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 3 Aug 10:56 am EDT
Extended Forecast for

Duncannon PA

Flash Flood Watch August 3, 11:00pm until August 4, 11:00pm
Click here for hazard details and duration
Flash Flood Watch
  • Today

    Today: A chance of showers and thunderstorms, mainly after 4pm. Some of the storms could produce gusty winds.  Mostly cloudy, with a high near 86. South wind 3 to 5 mph.  Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers

    High: 86 °F

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm.  Low around 68. South wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    T-storms then
    Showers

    Low: 68 °F

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 2pm.  High near 78. Light and variable wind.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Showers

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers and thunderstorms, mainly before 2am.  Cloudy, then gradually becoming partly cloudy, with a low around 65. Light and variable wind.  Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.

    Chance
    T-storms

    Low: 65 °F

  • Wednesday

    Wednesday: Sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.

    Sunny

    High: 84 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 60.

    Mostly Clear

    Low: 60 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 84.

    Mostly Sunny

    High: 84 °F

  • Thursday
    Night

    Thursday Night: A chance of showers.  Partly cloudy, with a low around 64. Chance of precipitation is 30%.

    Chance
    Showers

    Low: 64 °F

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 83. Chance of precipitation is 50%.

    Chance
    Showers

    High: 83 °F

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 4pm. Some of the storms could produce gusty winds. Mostly cloudy, with a high near 86. South wind 3 to 5 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Low around 68. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
Showers, with thunderstorms also possible after 2pm. High near 78. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Tuesday Night
A chance of showers and thunderstorms, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
A chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Friday Night
A chance of showers before 2am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Mostly sunny, with a high near 89.
Click Map For Forecast
Point Forecast:
Duncannon PA
 40.4°N 77.02°W (Elev. 413 ft)
10:13 am EDT Aug 3, 2020
11am EDT Aug 3, 2020-6pm EDT Aug 9, 2020
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database