Thunderstorms and Heavy Rains in the Appalachians

Multiple rounds of moderate to locally heavy rain will impact portions of the Appalachians and Mid-Atlantic, which may lead to flash flooding concerns. Thunderstorms with isolated severe wind gusts will be possible this afternoon from parts of the Southeast into the southern and central Appalachians. A multi-day heavy rain will pose a flash flood threat in New Mexico beginning Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Light Rain Fog/Mist

56°F

13°C

Humidity	93%
Wind Speed	Vrbl 6 mph
Barometer	30.04 in (1017.6 mb)
Dewpoint	54°F (12°C)
Visibility	5.00 mi
Last update	21 Sep 3:53 pm EDT

More Information:

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

Extended Forecast for

Smithton PA

Flood Watch September 21, 04:27pm until September 23, 08:00am

Click here for hazard details and duration

Flood Watch

Flood Watch September 21, 04:27pm until September 23, 08:00am
NOW until 8:00am Wed
Flood Watch
This Afternoon
High: 64 °F
Showers
Likely and
Patchy Fog
Tonight
Low: 57 °F
Showers
Tuesday
High: 65 °F
Showers
Likely
Tuesday Night
Low: 53 °F
Showers
Wednesday
High: 62 °F
Showers
Wednesday Night
Low: 51 °F
Chance
Showers
Thursday
High: 65 °F
Mostly Sunny
Thursday Night
Low: 45 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm. Patchy fog before 5pm. Otherwise, cloudy, with a high near 64. East wind around 11 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and possibly a thunderstorm before 3am, then showers likely. Low around 57. Northeast wind 7 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

Showers likely before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Cloudy, with a high near 65. East wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night

Showers. Low around 53. East wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday

Showers. High near 62. East wind 11 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday Night

A chance of showers before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday

Mostly sunny, with a high near 65.

Thursday Night

Mostly clear, with a low around 45.

Friday

Sunny, with a high near 66.

Friday Night

Mostly clear, with a low around 45.

Saturday

Sunny, with a high near 67.

Saturday Night

Mostly clear, with a low around 47.