Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Flood Watch in effect from August 20, 12:00 PM EDT until August 21, 02:00 AM EDT

Current conditions at

Somerville, Somerset Airport (KSMQ)

Lat: 40.62°NLon: 74.67°WElev: 105ft.

Fair

66°F

19°C

Humidity	100%
Wind Speed	Calm
Barometer	29.91 in (1012.8 mb)
Dewpoint	66°F (19°C)
Visibility	8.00 mi
Last update	19 Aug 10:53 pm EDT

More Information:

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

Extended Forecast for

Whitehouse Station NJ

Flood Watch August 20, 12:00pm until August 21, 02:00am

Click here for hazard details and duration

Flood Watch

Tonight
Low: 65 °F
Mostly Clear
Thursday
High: 80 °F
Chance
Showers then
Heavy Rain
Thursday Night
Low: 61 °F
Heavy Rain
then Slight
Chance
Showers
Friday
High: 81 °F
Partly Sunny
then Slight
Chance
Showers
Friday Night
Low: 63 °F
Chance
Showers
Saturday
High: 80 °F
Showers
Likely
Saturday Night
Low: 64 °F
Showers
Likely
Sunday
High: 83 °F
Chance
Showers then
Chance
T-storms
Sunday Night
Low: 61 °F
Chance
T-storms then
Mostly Clear

Detailed Forecast

Tonight

Mostly clear, with a low around 65. Calm wind.

Thursday

A chance of showers, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 80. Calm wind becoming northeast around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms likely before 9pm, then a slight chance of showers between 9pm and 2am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A slight chance of showers after 2pm. Partly sunny, with a high near 81. Northeast wind around 5 mph. Chance of precipitation is 20%.

Friday Night

A chance of showers, mainly after 8pm. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.

Saturday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

Sunday

A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.

Sunday Night

A chance of thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

Monday

Sunny, with a high near 81.

Monday Night

Mostly clear, with a low around 58.

Tuesday

Sunny, with a high near 81.

Tuesday Night

Partly cloudy, with a low around 60.

Wednesday

A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.