National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Flash Flooding and Severe Thunderstorms Tuesday, July 28th - Wednesday, July 29th

Scattered to numerous thunderstorms are likely across the region Tuesday, July 28th through Wednesday, July 29th which will bring a risk of flash flooding and severe thunderstorms across the entire region. View this briefing for the details regarding these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Andover, Aeroflex-Andover Airport (K12N)

Lat: 41.01°NLon: 74.74°WElev: 584ft.

78°F

26°C

Humidity 76%
Wind Speed Vrbl 7 mph
Barometer 29.68 in (1004.2 mb)
Dewpoint 70°F (21°C)
Visibility NA
Heat Index80°F (27°C)
Last update 28 Jul 12:54 pm EDT
Extended Forecast for

Portland PA

Flood Watch July 28, 01:49pm until July 29, 08:00pm
Severe T-storm Watch until July 28, 08:00pm
Severe T-storm Warning until July 28, 02:15pm
Severe T-storm Warning until July 28, 02:00pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
...
...
  •  
    Flood Watch July 28, 01:49pm until July 29, 08:00pm
    Severe T-storm Watch until July 28, 08:00pm
    Severe T-storm Warning until July 28, 02:15pm
    Severe T-storm Warning until July 28, 02:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 78 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms before 5am, then a slight chance of showers. Some of the storms could produce heavy rainfall. Low around 63. Calm wind. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 63 °F

    Heavy Rain

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 78. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Northwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. North wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. Some of the storms could be severe and produce heavy rainfall. High near 78. South wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Tonight
Showers and thunderstorms before 5am, then a slight chance of showers. Some of the storms could produce heavy rainfall. Low around 63. Calm wind. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 78. Calm wind becoming northwest around 5 mph in the morning. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Northwest wind around 5 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. North wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Mostly cloudy, with a low around 64.
Sunday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portland PA
 40.93°N 75.11°W (Elev. 522 ft)
Last Update:
1:18 pm EDT Jul 28, 2026
Forecast Valid:
1pm EDT Jul 28, 2026-6pm EDT Aug 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation