Public Information Statement
Issued by NWS Upton, NY

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000 NOUS41 KOKX 011054 PNSOKX Public Information Statement National Weather Service New York NY 654 AM EDT Wed Nov 1 2017 ...THIS WEEK IS WINTER WEATHER AWARENESS WEEK... Please join the National Weather Service and the New York State Office of Emergency Management in promoting winter weather education including safety. The topic for today is ice storms. Freezing rain is liquid rain that falls when surface temperatures are at or below 32 degrees Fahrenheit. The rain freezes upon impact with objects and the ground, creating a layer of ice. When the layer of ice accumulates to at least one half inch thick, the weight of the ice can down tree limbs, power lines and communication towers, and cause widespread impacts. This defines an ice storm. Even just a trace of freezing rain can produce a thin layer of ice on roads, which can cause significant impact to mass transit, especially if it occurs during rush hour. Although ice storms occur more frequently from northern New Jersey across the Lower Hudson Valley and interior southwest Connecticut, they can occur along the coast. On January 18th 2015, up to one quarter of an inch of ice fell across the area. This was a result of a retreating high pressure system to the north locking in a shallow layer of cold air, while a warm front approached from the south. Even as air temperatures rose above freezing, very cold ground temperatures still allowed rain to freeze on contact with roads and walkways. Ice covered roads led to hundreds of traffic accidents. On February 1st and 2nd of 2011, between one quarter and three quarters of an inch of ice fell across Long Island, the New York City and New Jersey metro area, southern portions of the Lower Hudson valley and southern Connecticut. Several roof collapses were caused by the weight of the ice on top of already snow covered roofs, while many tree limbs and power lines were downed, causing numerous power outages. Ice covered roads also led to numerous traffic accidents. The next statement around 6 am Thursday will cover winter floods. $$

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