The rapidly deteriorating conditions from Winter Storm Niko have both Suffolk County and Nassau County under a Blizzard Warning until 6 PM this evening.  This update marks an elevation for Nassau County, which was previously under a Winter Storm Warning, while New York City remains under a Winter Storm Warning.

Likely snow accumulations have risen dramatically, with the current forecast indicating 12-18 inches for communities on Long Island.  Snow will be falling at a rate of up to 3 inches per hour, creating whiteout conditions and visibilities at just ¼ mile. Frigid temperatures in the 20s are also expected throughout the morning and afternoon.

Sustained winds of 25-35 mph with gusts of up to 50 mph will lead to hazardous travel and potential power outages.  Both Nassau County and Suffolk County are covered under a Hazardous Weather Outlook as well today until 6 PM.

For the most up to date weather information, head over to the LongIsland.com Weather Center, where you can find the latest weather forecasts, advisories and more.

To get the latest traffic & road conditions before traveling, visit the LongIsland.com Traffic Center, and be sure to check out the live traffic feeds on our Traffic Cam Page.

Please visit our Long Island School Closures Page for regular updates of school closings in your district.

[Source: NWS]