Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 17, 10:00 AM EDT until July 17, 08:00 PM EDT

Current conditions at

Brandywine Regional Airport (KOQN)

Lat: 39.99°NLon: 75.58°WElev: 465ft.

Fair

73°F

23°C

Humidity	94%
Wind Speed	Calm
Barometer	30.07 in
Dewpoint	72°F (22°C)
Visibility	7.00 mi
Last update	16 Jul 4:55 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Southeastern PA

Heat Advisory July 17, 10:00am until July 17, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 89 °F
Partly Sunny
then Showers
Likely
Tonight
Low: 73 °F
Showers
Likely then
Chance
Showers
Thursday
High: 90 °F
Chance
Showers then
Chance
T-storms
Thursday Night
Low: 74 °F
Chance
T-storms
Friday
High: 85 °F
Mostly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 85 °F
Mostly Sunny
then Chance
Showers
Saturday Night
Low: 70 °F
Chance
Showers
Sunday
High: 84 °F
Showers
Likely

Detailed Forecast

Today

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 89. Calm wind becoming southwest around 5 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.

Tonight

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 73. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 90. West wind 5 to 10 mph. Chance of precipitation is 50%. 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, mainly before 8pm. Partly cloudy, with a low around 74. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Northwest wind 5 to 10 mph. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 66.

Saturday

A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

Saturday Night

A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.

Sunday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 70%.

Sunday 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 68. Chance of precipitation is 60%.

Monday

A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

Monday Night

A chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

Tuesday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.