Public Information Statement
Issued by NWS Upton, NY

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NOUS41 KOKX 050938
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CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-061000-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
600 AM EDT WED NOV 5 2014

...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 IMPACT TO MASS TRANSIT.
THIS DEFINES AN ICE STORM.

EVEN JUST A TRACE OF FREEZING RAIN CAN PRODUCE A GLAZE OF ICE OVER
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 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. THIS WAS A RESULT OF A
STRONG HIGH PRESSURE SYSTEM TO THE NORTH LOCKING IN A SHALLOW LAYER
OF COLD AIR...WHILE A LOW PRESSURE SYSTEM SLOWLY APPROACHED FROM THE
OHIO VALLEY. 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.

DURING JANUARY 1994...AT LEAST 4 SIGNIFICANT ICING EVENTS OCCURRED
FROM THE 4TH THROUGH THE 28TH.

THE NEXT STATEMENT AT 6 AM THURSDAY WILL COVER WINTER FLOODS.

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