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Severe weather and flash flooding possible Saturday

Severe weather is possible across portions of the Great Plains, Deep South and coastal Carolinas Saturday. Primary threats are large hail and damaging winds, although a small tornado risk is also possible mainly in the Plains. Also across the South, heavy rainfall could lead to localized flash flooding.
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Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

75°F

24°C

Humidity 54%
Wind Speed N 8 mph
Barometer 29.93 in (1013.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 4 Jul 12:56 pm EDT

Detailed Forecast

This Afternoon
Mostly cloudy with a 50 percent chance of light rain. Near steady temperature in the mid 70s. Northeast winds around 10 mph.
Tonight
Mostly cloudy. A chance of light rain in the evening. Lows in the upper 50s. Northeast winds 5 to 10 mph...becoming north after midnight. Chance of rain 40 percent.
Sunday
Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph... Becoming southwest in the afternoon.
Sunday Night
Mostly clear. Lows in the upper 60s. Southwest winds 5 to 10 mph.
Monday
Sunny. Highs in the mid 80s. Northwest winds around 5 mph...becoming southwest in the afternoon.
Monday Night
Partly cloudy in the evening...then becoming mostly cloudy. Lows in the upper 60s.
Tuesday
Mostly cloudy in the morning...then becoming partly sunny. Highs in the mid 80s.
Tuesday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 30 percent.
Wednesday
Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 30 percent.
Wednesday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of rain 40 percent.
Thursday
Partly sunny. A chance of showers and thunderstorms in the morning...then a chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
Thursday Night
Mostly cloudy with a 30 percent chance of showers. Lows in the upper 60s.
Friday
Mostly sunny. Highs in the lower 80s.
  Click Map For Detailed Forecast
130 PM EDT SAT JUL 4 2015
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database