Public Information Statement
Issued by NWS Binghamton, NY

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NOUS41 KBGM 041358
PNSBGM
NYZ009-015>018-022>025-036-037-044>046-055>057-062-050400-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
900 AM EST TUE NOV 4 2014

...THIS WEEK IS WINTER WEATHER AWARENESS WEEK IN NEW YORK...

YOUR NATIONAL WEATHER SERVICE IN BINGHAMTON IS URGING YOU TO PREPARE
FOR THE HARSH...AND SOMETIMES DANGEROUS WEATHER THAT THE WINTER
SEASON OFTEN BRINGS.

THIS MESSAGE WILL PROVIDE YOU WITH SOME INFORMATION ON THE TYPES OF
HEAVY SNOW EVENTS WHICH IMPACT CENTRAL NEW YORK.

HEAVY SNOW CAN IMMOBILIZE A REGION AND PARALYZE A CITY...STRANDING
COMMUTERS...CLOSING AIRPORTS...STOPPING THE FLOW OF SUPPLIES...AND
DISRUPTING EMERGENCY AND MEDICAL SERVICES. ACCUMULATIONS OF SNOW CAN
CAUSE ROOFS TO COLLAPSE AND KNOCK DOWN TREES AND POWER LINES. HOMES
AND FARMS MAY BE ISOLATED FOR DAYS AND UNPROTECTED LIVESTOCK MAY BE
LOST. THE COST OF SNOW REMOVAL...REPAIRING DAMAGES...AND THE LOSS OF
BUSINESS CAN HAVE SEVERE ECONOMIC IMPACTS ON CITIES AND TOWNS.

HEAVY SNOW IN CENTRAL NEW YORK IS DEFINED AS 7 INCHES OR MORE
FALLING IN A 12 HOUR PERIOD OR 9 INCHES OR MORE FALLING IN A 24
HOUR PERIOD. WARNINGS ARE ISSUED WHEN THESE AMOUNTS ARE FORECAST
AND ADVISORIES ARE ISSUED FOR LESSER AMOUNTS...GENERALLY 4
INCHES OR MORE IN A 12 HOUR PERIOD.

HEAVY SNOW CAN BE PRODUCED BY NOREASTERS...OVERRUNNING SITUATIONS
AND LAKE EFFECT. LESSER AMOUNTS OF SNOW ARE OFTEN PRODUCED BY
ALBERTA CLIPPERS.

NOREASTERS ARE INTENSE AREAS OF LOW PRESSURE THAT TYPICALLY DEVELOP
ALONG THE EASTERN SEABOARD MOST OFTEN DURING LATE FALL...WINTER AND
EARLY SPRING. THEY USUALLY BRING STRONG NORTHEAST WINDS TO AREAS
NEAR THE COAST AS THEY MOVE NORTH ALONG IT. SOME MEMORABLE
NOREASTERS IN RECENT YEARS INCLUDED THE PRESIDENTS DAY SNOWSTORM OF
2003...THE FEBRUARY 11TH AND 12TH STORM OF 2006...THE VALENTINES
DAY SNOWSTORM OF 2007 AND THE SNOWSTORM OF FEBRUARY 25TH AND 26TH,
2010. SNOWFALL RATES IN NOREASTERS CAN REACH 2 TO 4 INCHES PER HOUR
AND THESE RATES CAN LAST FOR SEVERAL HOURS.

OVERRUNNING CAN ALSO PRODUCE HEAVY SNOW. THIS OCCURS WHEN WARM
AIR ALOFT FLOWS OVER COLD AIR NEAR THE SURFACE. OVERRUNNING HAPPENS
MOSTLY DURING THE WINTER WHEN THE CONTRAST IN AIRMASSES IS GREATEST.
OVERRUNNING OCCURS MOST OFTEN WHEN A LARGE DOME OF HIGH PRESSURE
IS LOCATED IN SOUTHEASTERN CANADA AND A WARM FRONT IS APPROACHING
OUR REGION FROM THE SOUTH OR SOUTHWEST.

LAKE EFFECT SNOWS OFTEN OCCUR IN THE LATE AUTUMN AND WINTER DOWNWIND
OF THE GREAT LAKES WHEN COLD ARCTIC AIR SWEEPS ACROSS THE RELATIVELY
WARMER WATERS OF THE LAKES. SNOW SQUALLS WILL TYPICALLY FORM ALONG
THE LEE SHORES OF THE LAKES AND MOVE DOWNWIND. THESE SQUALLS CAN
RESULT IN LOCALLY HEAVY SNOWS WITH REDUCED VISIBILITIES IN FAIRLY
NARROW BANDS. MOST LAKE EFFECT SNOWFALL OCCURS IN THE STRONG COLD
AIR FLOW AFTER THE PASSAGE OF A COLD FRONT. THE LAKE EFFECT SNOW
WHICH IMPACTS CENTRAL NEW YORK USUALLY ORIGINATES DOWNWIND OF
LAKE ONTARIO...BUT SOMETIMES THERE WILL BE BANDS FROM LAKE ERIE
WHICH CAN IMPACT THE SOUTHERN TIER AND FINGER LAKES REGION OF NEW
YORK. THE AREAS OF CENTRAL NEW YORK WHICH RECEIVE THE MOST LAKE
EFFECT SNOW ARE THE TUG HILL PLATEAU...WESTERN MOHAWK VALLEY AND THE
GREATER SYRACUSE AREA INCLUDING THE NORTHERN FINGER LAKES.

AN ALBERTA CLIPPER IS AN AREA OF LOW PRESSURE THAT USUALLY FORMS
OVER THE PROVINCE OF ALBERTA IN CANADA...EAST OF THE ROCKY
MOUNTAINS. ALBERTA CLIPPERS USUALLY MOVE VERY QUICKLY SOUTHEAST FROM
THEIR POINT OF ORIGIN AND USUALLY BRING ONLY LIGHT SNOW AS THEY
CROSS OUR REGION UNLESS THEY INTENSIFY OFF THE EAST COAST. THEY ALSO
ALLOW COLDER AIR FROM CANADA TO MOVE INTO OUR REGION IN THEIR WAKE.

SOME SNOW TERMS WHICH ARE COMMONLY USED INCLUDE BLIZZARD...BLOWING
SNOW...SNOW SQUALLS...SNOW SHOWERS AND SNOW FLURRIES.

A BLIZZARD IS A WINTER STORM WHICH HAS SUSTAINED WINDS OR FREQUENT
GUSTS OF 35 MPH OR MORE...WITH CONSIDERABLE FALLING AND OR BLOWING
SNOW FREQUENTLY REDUCING THE VISIBILITY TO AT OR BELOW ONE QUARTER
MILE...AND THESE CONDITIONS LAST FOR 3 HOURS OR MORE. SOME OF THE
GREATEST SNOWFALLS ON RECORD IN CENTRAL NY OCCURRED DURING
BLIZZARDS. THIRTY TO 45 INCHES FELL OVER A LARGE PART OF CENTRAL NY
DURING THE BLIZZARD OF 1993...AND BETWEEN 2 AND 3 FEET FELL DURING
THE BLIZZARD OF 1966.

BLOWING SNOW IS WIND DRIVEN SNOW THAT REDUCES VISIBILITY. BLOWING
SNOW MAY BE FALLING SNOW OR SNOW ALREADY ON THE GROUND THAT IS
PICKED UP BY THE WIND.

SNOW SQUALLS ARE BRIEF INTENSE SNOW SHOWERS ACCOMPANIED
BY STRONG GUSTY WINDS WHICH MAY PRODUCE SIGNIFICANT
SNOW ACCUMULATIONS.

SNOW SHOWERS HAVE SNOW FALLING AT VARYING INTENSITIES
FOR BRIEF PERIODS OF TIME WITH SOME SNOW ACCUMULATION
POSSIBLE.

SNOW FLURRIES ARE LIGHT SNOW WHICH FALLS WITH LITTLE
OR NO SNOW ACCUMULATION.

FOR MORE INFORMATION GO TO HTTP://WEATHER.GOV/BGM/WWAW
YOU CAN ALSO VISIT OUR FACEBOOK PAGE WHICH CAN BE ACCESSED
AT HTTP://WWW.FACEBOOK.COM/NWSBINGHAMTON AND TWITTER AT
HTTP://WWW.TWITTER.COM/NWSBINGHAMTON  YOU CAN ALSO FOLLOW
ALONG USING THE HASHTAG #WINTERPREP.

YOU CAN ALSO CONTACT DAVE NICOSIA WARNING COORDINATION
METEOROLOGIST FOR NOAA`S NATIONAL WEATHER SERVICE IN
BINGHAMTON AT 607-770-9531 X 223 OR VIA EMAIL AT
DAVID.NICOSIA@NOAA.GOV

$$
DJN






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