Public Information Statement
Issued by NWS Cleveland, OH

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
1009 AM EST WED NOV 12 2014

THE WEEK OF NOVEMBER 9TH THROUGH 14TH IS
WINTER WEATHER AWARENESS WEEK IN PENNSYLVANIA.

EACH DAY WE WILL FEATURE A DIFFERENT EDUCATIONAL MESSAGE CONCERNING
THE DANGERS AND SAFETY CONCERNS ASSOCIATED WITH WINTER WEATHER.

TODAY`S MESSAGE...
ICE STORMS.

HEAVY ACCUMULATIONS OF ICE CAN BRING DOWN TREES AND POWER
LINES...AS WELL AS TOPPLE UTILITY POLES AND COMMUNICATION TOWERS.
ICE CAN DISRUPT COMMUNICATIONS AND POWER FOR DAYS WHILE UTILITY
COMPANIES REPAIR EXTENSIVE DAMAGE. EVEN SMALL ACCUMULATIONS OF ICE
CAN BE EXTREMELY DANGEROUS TO MOTORISTS AND PEDESTRIANS. BRIDGES AND
OVERPASSES ARE PARTICULARLY DANGEROUS BECAUSE THEY FREEZE BEFORE
OTHER SURFACES.

FREEZING RAIN IS THE RESULT OF PRECIPITATION WHICH INITIALLY FALLS
AS SNOW...THEN ENCOUNTERS A LAYER OF WARM AIR WHICH MELTS THE SNOW
CHANGING IT TO RAIN. THE RAIN THEN FREEZES AS IT ENCOUNTERS BELOW
FREEZING AIR AT OR NEAR THE SURFACE CREATING A FILM OF ICE.

MOST OF THE UNITED STATES RECEIVES LESS THAN 10 HOURS OF FREEZING
RAIN ANNUALLY WITH THE HIGHEST FREQUENCY IN THE SAINT LAWRENCE RIVER
VALLEY WHERE OVER 40 HOURS OF FREEZING RAIN ARE OBSERVED ANNUALLY.

THE NATIONAL WEATHER SERVICE ISSUES ICE STORM WARNINGS FOR
PENNSYLVANIA WHEN SIGNIFICANT ICE ACCUMULATIONS ARE EXPECTED AND
WINTER WEATHER OR FREEZING RAIN ADVISORIES FOR ANY ICE ACCRETION
WHICH ALSO INCLUDES FREEZING DRIZZLE. THE POCONOS IN NORTHEAST
PENNSYLVANIA ARE MOST SUSCEPTIBLE TO ICE STORMS WITH THE MOST RECENT
STORMS OCCURRING IN JANUARY 2003 AND 2005.


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