Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

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. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Light Rain Fog/Mist

75°F

24°C

Humidity	100%
Wind Speed	S 8 mph
Barometer	29.94 in
Dewpoint	75°F (24°C)
Visibility	3.00 mi
Last update	27 Aug 4:15 pm EDT

More Information:

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

Extended Forecast for

Conowingo MD

Severe T-storm Watch until August 27, 10:00pm

Click here for hazard details and duration

Severe T-storm Watch

Severe T-storm Watch until August 27, 10:00pm
NOW until 10:00pm Thu
Severe T-storm Watch
This Afternoon
High: 85 °F
Severe
Thunderstorms
Tonight
Low: 67 °F
Severe
Thunderstorms
then
Scattered
Showers
Friday
High: 84 °F
Patchy Fog
then Slight
Chance
T-storms
Friday Night
Low: 65 °F
Partly Cloudy
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 66 °F
Mostly Clear
Sunday
High: 86 °F
Mostly Sunny
Sunday Night
Low: 70 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm before 5pm, then scattered showers and thunderstorms after 5pm. Some of the storms could be severe. Mostly cloudy, with a high near 85. South wind around 8 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 thunderstorms likely, mainly before 11pm. Some of the storms could be severe. Mostly cloudy, with a low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Friday

A slight chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms after 5pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 84. Calm wind becoming north around 5 mph. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 65. Calm wind.

Saturday

Sunny, with a high near 85. North wind around 5 mph becoming calm in the afternoon.

Saturday Night

Mostly clear, with a low around 66.

Sunday

Mostly sunny, with a high near 86.

Sunday Night

Partly cloudy, with a low around 70.

Monday

Mostly sunny, with a high near 90.