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

Current conditions at

Annapolis, United States Naval Academy (KNAK)

Lat: 38.99°NLon: 76.49°WElev: 3ft.

Fair

77°F

25°C

Humidity	88%
Wind Speed	SW 3 mph
Barometer	30.04 in (1017.3 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	16 Jul 2:54 am EDT

More Information:

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

Extended Forecast for

Trappe MD

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

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 75 °F
Mostly Cloudy
Wednesday
High: 90 °F
T-storms
Likely
Wednesday Night
Low: 78 °F
T-storms
Likely then
Slight Chance
T-storms
Thursday
High: 94 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 78 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 90 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 73 °F
Chance
T-storms then
Mostly Cloudy
Saturday
High: 88 °F
Partly Sunny
then Chance
Showers
Saturday Night
Low: 73 °F
Chance
T-storms

Detailed Forecast

Overnight

Mostly cloudy, with a low around 75. South wind around 5 mph.

Wednesday

Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 90. Heat index values as high as 100. 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 likely, mainly before 8pm. Mostly cloudy, with a low around 78. Southwest wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 106. Southwest wind around 10 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. West 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 90. Chance of precipitation is 40%. 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. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.

Saturday

A chance of showers after 2pm. Partly sunny, with a high near 88. 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 73. Chance of precipitation is 30%.

Sunday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 60%.

Sunday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Monday

A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 40%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 30%.