Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Reedsville / Mifflin (KRVL)

Lat: 40.68°NLon: 77.63°WElev: 820ft.

Fair

90°F

32°C

Humidity	49%
Wind Speed	W 10 mph
Barometer	30.00 in
Dewpoint	68°F (20°C)
Visibility	9.00 mi
Heat Index	94°F (34°C)
Last update	4 Jul 12:15 pm EDT

More Information:

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

Extended Forecast for

Port Royal PA

Heat Advisory July 4, 12:24pm until July 4, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 4, 12:24pm until July 4, 08:00pm
NOW until 8:00pm Sat
Heat Advisory
Independence Day
High: 96 °F
Severe
Thunderstorms
Tonight
Low: 70 °F
Severe
Thunderstorms
and Patchy
Fog
Sunday
High: 87 °F
Slight Chance
Showers and
Areas Fog
then Heavy
Rain
Sunday Night
Low: 66 °F
Heavy Rain
and Patchy
Fog then
Showers and
Patchy Fog
Monday
High: 79 °F
Showers and
Patchy Fog
Monday Night
Low: 64 °F
Showers
Likely
Tuesday
High: 81 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 65 °F
Chance
T-storms then
Chance
Showers

Detailed Forecast

Independence Day

A slight chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Some of the storms could be severe. Mostly sunny and hot, with a high near 96. Heat index values as high as 105. West wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Some of the storms could be severe. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

A chance of showers, then showers and thunderstorms likely after 1pm. Some of the storms could produce heavy rainfall. Areas of fog before 9am. Otherwise, partly sunny, with a high near 87. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and thunderstorms likely before 7pm, then showers and possibly a thunderstorm between 7pm and 5am, then showers after 5am. Some of the storms could produce heavy rainfall. Patchy fog after 11pm. Low around 66. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers, with thunderstorms also possible after 11am. Patchy fog between 10am and 11am. High near 79. Light southeast wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

Wednesday

Partly sunny, with a high near 84.

Wednesday Night

Partly cloudy, with a low around 65.

Thursday

A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.