Hazardous Weather Outlook Issued For Long Island

The National Weather Service has issued a hazardous weather outlook as heavy rain plus plunging temperatures could lead to "patchy" black ice beginning Sunday evening on Long Island.

The temperature will rise into the mid-50s by noon, but then begin to fall through the 30s as the day progresses, all the way down to 22 degrees by 6 a.m. Monday.

Rain, potentially heavy at times with a possible thunderstorm, are likely Sunday. As temperatures drop, residual moisture on untreated surfaces will freeze, the NWS says.

"Travelers should be alert for potentially icy travel conditions this evening into tonight," the hazardous weather outlook says.

Here's the full forecast:

Sunday- Showers and possibly a thunderstorm before 2pm, then rain between 2pm and 5pm, then showers likely after 5pm. Some of the storms could produce heavy rainfall. Patchy fog before 11am. Temperature rising to near 57 by noon, then falling to around 47 during the remainder of the day. Breezy, with a southwest wind 20 to 22 mph becoming west in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night- A 30 percent chance of showers, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 22. Wind chill values between 10 and 15. Blustery, with a north wind 13 to 20 mph.

Monday- Sunny, with a high near 31. Wind chill values between 10 and 20. North wind 8 to 11 mph.

Monday Night- Mostly clear, with a low around 17. Northeast wind 5 to 7 mph becoming calm after midnight.

Tuesday- Sunny, with a high near 37. Light and variable wind.

Tuesday Night- Partly cloudy, with a low around 29.