Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Hazardous Weather Conditions

Flood Watch in effect from August 27, 12:00 PM EDT until August 28, 04:00 AM EDT

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Partly Cloudy

69°F

21°C

Humidity	88%
Wind Speed	Calm
Barometer	30.05 in
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	27 Aug 12:15 am EDT

More Information:

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

Extended Forecast for

Thorndale PA

Flood Watch August 27, 12:00pm until August 28, 04:00am

Click here for hazard details and duration

Flood Watch

Overnight
Low: 67 °F
Mostly Cloudy
Thursday
High: 84 °F
Chance
T-storms then
Showers
Likely
Thursday Night
Low: 66 °F
Heavy Rain
then Chance
Showers
Friday
High: 84 °F
Mostly Sunny
Friday Night
Low: 63 °F
Partly Cloudy
Saturday
High: 83 °F
Sunny
Saturday Night
Low: 63 °F
Mostly Clear
Sunday
High: 85 °F
Mostly Sunny
Sunday Night
Low: 67 °F
Partly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 67. South wind around 5 mph.

Thursday

A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms before 3am, then a slight chance of showers after 4am. Some of the storms could produce heavy rainfall. Low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Friday

Mostly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 63. Calm wind.

Saturday

Sunny, with a high near 83.

Saturday Night

Mostly clear, with a low around 63.

Sunday

Mostly sunny, with a high near 85.

Sunday Night

Partly cloudy, with a low around 67.