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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Fog/Mist

73°F

23°C

Humidity	100%
Wind Speed	Calm
Barometer	30.09 in
Dewpoint	73°F (23°C)
Visibility	2.50 mi
Last update	16 Jul 3:15 am EDT

More Information:

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

Extended Forecast for

Oxford PA

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

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 71 °F
Mostly Cloudy
Wednesday
High: 86 °F
Chance
T-storms then
Heavy Rain
Wednesday Night
Low: 73 °F
Heavy Rain
then Chance
T-storms
Thursday
High: 90 °F
Chance
Showers then
Chance
T-storms
Thursday Night
Low: 73 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 85 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 66 °F
Chance
T-storms then
Partly Cloudy
Saturday
High: 83 °F
Mostly Sunny
then Chance
Showers
Saturday Night
Low: 69 °F
Chance
T-storms

Detailed Forecast

Overnight

Mostly cloudy, with a low around 71. Calm wind.

Wednesday

A slight chance of showers, then showers and thunderstorms likely after 11am. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 86. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms before 5am, then a slight chance of showers. Some of the storms could produce heavy rainfall. Low around 73. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter 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. Heat index values as high as 100. West 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 thunderstorms before 8pm. Partly cloudy, with a low around 73. Southwest wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%.

Saturday

A chance of showers after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 30%.

Saturday Night

A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.

Sunday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 70%.

Sunday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

Monday

A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.