Alert archive / New York / Lake Effect Snow Advisories in 2016

Lake Effect Snow Advisory 14, NWS Buffalo, NY

February 9, 20164 counties in New York

NWS Buffalo, NY issued this lake effect snow advisory at Feb 9, 2016, 3:38 PM EST for 4 counties in New York. It took effect at Feb 9, 2016, 11:00 PM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Feb 9, 2016, 3:38 PM EST (20:38 UTC)
In effect from
Feb 9, 2016, 11:00 PM EST
Expired
Feb 10, 2016, 4:00 AM EST
In force
5 hr
Issued by
NWS Buffalo, NY

Counties Cayuga County, NY, Erie County, NY, Oswego County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 131 km from the middle of the area, began a volume at 20:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.6 hours before the alert went out and 128 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2016-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2016-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

691 
WWUS41 KBUF 092038
WSWBUF

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BUFFALO NY
338 PM EST TUE FEB 9 2016

NYZ019-020-100445-
/O.UPG.KBUF.LE.A.0006.160210T0600Z-160211T2100Z/
/O.NEW.KBUF.LE.W.0006.160210T0400Z-160211T2100Z/
CHAUTAUQUA-CATTARAUGUS-
INCLUDING THE CITIES OF...JAMESTOWN...OLEAN
338 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 11 PM THIS EVENING TO
4 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW WARNING...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 4 PM
EST THURSDAY. THIS REPLACES THE LAKE EFFECT SNOW WATCH.

* LOCATIONS...CHAUTAUQUA AND CATTARAUGUS COUNTIES. GREATEST SNOW
  AMOUNTS EXPECTED JUST INLAND FROM LAKE ERIE ALONG THE CHAUTAUQUA
  RIDGE.

* TIMING...FROM LATE THIS EVENING THROUGH LATE THURSDAY 
  AFTERNOON.

* ACCUMULATIONS...UP TO 2 INCHES OVERNIGHT...3 TO 6 INCHES
  WEDNESDAY...2 TO 4 INCHES WEDNESDAY NIGHT...AND 2 TO 4 INCHES
  THURSDAY...LEADING TO STORM TOTALS OF 8 TO 16 INCHES IN THE MOST
  PERSISTENT LAKE SNOWS.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH PRODUCING SOME
  BLOWING AND DRIFTING SNOW.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN VERY
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND POOR
  VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

IF YOU LOSE POWER AND PLAN ON RUNNING A GENERATOR...MAKE SURE
THAT THE GENERATOR IS LOCATED OUTDOORS AND IS PROPERLY
VENTILATED. SPACE HEATERS SHOULD ALSO BE PROPERLY VENTILATED AND
USED ONLY IF THEY ARE OPERATING PROPERLY. MAKE SURE SNOW DOES NOT
BLOCK EXHAUSTS AND FRESH AIR INTAKES FOR HIGH EFFICIENCY FURNACES
AND WATER HEATERS.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ085-100445-
/O.UPG.KBUF.LE.A.0006.160210T0600Z-160211T2100Z/
/O.NEW.KBUF.LE.Y.0014.160210T0400Z-160211T2100Z/
SOUTHERN ERIE-
INCLUDING THE CITIES OF...ORCHARD PARK...SPRINGVILLE
338 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
4 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW ADVISORY...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO
4 PM EST THURSDAY. THIS REPLACES THE LAKE EFFECT SNOW WATCH.

* LOCATIONS...SOUTHERN ERIE COUNTY. GREATEST SNOW AMOUNTS EXPECTED
  JUST INLAND FROM LAKE ERIE ACROSS THE BOSTON HILLS.

* TIMING...FROM LATE THIS EVENING THROUGH LATE THURSDAY 
  AFTERNOON.

* ACCUMULATIONS...AN INCH OR LESS OVERNIGHT...2 TO 4 INCHES 
  WEDNESDAY...1 TO 3 INCHES WEDNESDAY NIGHT...AND UP TO 2 INCHES 
  THURSDAY...LEADING TO STORM TOTALS OF 5 TO 10 INCHES IN THE 
  MOST PERSISTENT LAKE SNOWS.

* WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH PRODUCING SOME
  BLOWING AND DRIFTING SNOW.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND POOR
  VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ004>006-100445-
/O.NEW.KBUF.LE.Y.0014.160210T1800Z-160211T2300Z/
WAYNE-NORTHERN CAYUGA-OSWEGO-
INCLUDING THE CITIES OF...NEWARK...FAIR HAVEN...OSWEGO
338 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 1 PM WEDNESDAY TO
6 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW ADVISORY...WHICH IS IN EFFECT FROM 1 PM WEDNESDAY TO 6 PM
EST THURSDAY.

* LOCATIONS...WAYNE...NORTHERN CAYUGA...OSWEGO COUNTIES. GREATEST
  SNOW AMOUNTS EXPECTED SOUTHEAST OF LAKE ONTARIO FROM
  NORTHEASTERN WAYNE ACROSS NORTHERN CAYUGA TO SOUTHERN OSWEGO
  COUNTIES.

* TIMING...FROM EARLY WEDNESDAY AFTERNOON THROUGH EARLY THURSDAY 
  EVENING.

* ACCUMULATIONS...AN INCH OR LESS WEDNESDAY...3 TO 5 INCHES
  WEDNESDAY NIGHT...AND 2 TO 4 INCHES THURSDAY...LEADING TO STORM
  TOTALS OF 5 TO 9 INCHES IN THE MOST PERSISTENT LAKE SNOWS.

* WINDS...WEST 20 TO 30 MPH PRODUCING SNOW BLOWING AND DRIFTING
  SNOW.

* VISIBILITIES...LESS THAN A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN 
  VERY DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND 
  POOR VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

SMITH
2 follow-up statements
222 
WWUS41 KBUF 100245
WSWBUF

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BUFFALO NY
945 PM EST TUE FEB 9 2016

NYZ019-020-101045-
/O.CON.KBUF.LE.W.0006.160210T0400Z-160211T2100Z/
CHAUTAUQUA-CATTARAUGUS-
INCLUDING THE CITIES OF...JAMESTOWN...OLEAN
945 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 4 PM EST
THURSDAY...

* LOCATIONS...CHAUTAUQUA AND CATTARAUGUS COUNTIES. GREATEST SNOW 
  AMOUNTS EXPECTED JUST INLAND FROM LAKE ERIE ALONG THE 
  CHAUTAUQUA RIDGE.

* TIMING...FROM LATE THIS EVENING THROUGH LATE THURSDAY 
  AFTERNOON.

* ACCUMULATIONS...1 TO 3 INCHES OVERNIGHT...3 TO 5 INCHES 
  WEDNESDAY...2 TO 4 INCHES WEDNESDAY NIGHT...AND 1 TO 3 INCHES 
  THURSDAY...LEADING TO STORM TOTALS OF 7 TO 14 INCHES IN THE 
  MOST PERSISTENT LAKE SNOWS.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN 
  VERY DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND 
  POOR VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

IF YOU LOSE POWER AND PLAN ON RUNNING A GENERATOR...MAKE SURE
THAT THE GENERATOR IS LOCATED OUTDOORS AND IS PROPERLY
VENTILATED. SPACE HEATERS SHOULD ALSO BE PROPERLY VENTILATED AND
USED ONLY IF THEY ARE OPERATING PROPERLY. MAKE SURE SNOW DOES NOT
BLOCK EXHAUSTS AND FRESH AIR INTAKES FOR HIGH EFFICIENCY FURNACES
AND WATER HEATERS.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ085-101045-
/O.CON.KBUF.LE.Y.0014.160210T0400Z-160211T2100Z/
SOUTHERN ERIE-
INCLUDING THE CITIES OF...ORCHARD PARK...SPRINGVILLE
945 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST
THURSDAY...

* LOCATIONS...SOUTHERN ERIE COUNTY. GREATEST SNOW AMOUNTS 
  EXPECTED JUST INLAND FROM LAKE ERIE ACROSS THE BOSTON HILLS.

* TIMING...FROM LATE THIS EVENING THROUGH LATE THURSDAY 
  AFTERNOON.

* ACCUMULATIONS...AROUND AN INCH OVERNIGHT...1 TO 3 INCHES 
  WEDNESDAY...1 TO 3 INCHES WEDNESDAY NIGHT...AND UP TO 2 INCHES 
  THURSDAY...LEADING TO STORM TOTALS OF 5 TO 10 INCHES IN THE 
  MOST PERSISTENT LAKE SNOWS.

* WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN 
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND POOR 
  VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ004>006-101045-
/O.CON.KBUF.LE.Y.0014.160210T1800Z-160211T2300Z/
WAYNE-NORTHERN CAYUGA-OSWEGO-
INCLUDING THE CITIES OF...NEWARK...FAIR HAVEN...OSWEGO
945 PM EST TUE FEB 9 2016

...LAKE EFFECT SNOW ADVISORY REMAINS IN EFFECT FROM 1 PM
WEDNESDAY TO 6 PM EST THURSDAY...

* LOCATIONS...WAYNE...NORTHERN CAYUGA...OSWEGO COUNTIES. 
  GREATEST SNOW AMOUNTS EXPECTED SOUTHEAST OF LAKE ONTARIO FROM 
  NORTHEASTERN WAYNE ACROSS NORTHERN CAYUGA TO SOUTHERN OSWEGO 
  COUNTIES.

* TIMING...FROM EARLY WEDNESDAY AFTERNOON THROUGH EARLY THURSDAY 
  EVENING.

* ACCUMULATIONS...AN INCH OR LESS WEDNESDAY...2 TO 4 INCHES 
  WEDNESDAY NIGHT...AND 3 TO 5 INCHES THURSDAY...LEADING TO 
  STORM TOTALS OF 5 TO 9 INCHES IN THE MOST PERSISTENT LAKE 
  SNOWS.

* WINDS...WEST 20 TO 30 MPH.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN 
  VERY DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND 
  POOR VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

WOOD
858 
WWUS41 KBUF 100900
WSWBUF

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BUFFALO NY
400 AM EST WED FEB 10 2016

NYZ004>006-101700-
/O.UPG.KBUF.LE.Y.0014.160210T1800Z-160211T2300Z/
/O.EXB.KBUF.LE.W.0006.160210T1500Z-160212T0900Z/
WAYNE-NORTHERN CAYUGA-OSWEGO-
INCLUDING THE CITIES OF...NEWARK...FAIR HAVEN...OSWEGO
400 AM EST WED FEB 10 2016

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 10 AM THIS MORNING TO
4 AM EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 4 AM
EST FRIDAY. THE LAKE EFFECT SNOW ADVISORY IS NO LONGER IN EFFECT.

* LOCATIONS...WAYNE...NORTHERN CAYUGA...AND OSWEGO COUNTIES...WITH
  THE GREATEST SNOW AMOUNTS EXPECTED FROM NORTHEASTERN WAYNE
  COUNTY ACROSS NORTHERN CAYUGA AND SOUTHERN OSWEGO COUNTIES.

* TIMING...FROM LATE THIS MORNING THROUGH LATE THURSDAY NIGHT.

* ACCUMULATIONS...1 TO 3 INCHES TODAY...3 TO 5 INCHES TONIGHT...
  3 TO 5 INCHES THURSDAY...AND 4 TO 8 INCHES THURSDAY NIGHT...
  LEADING TO STORM TOTALS OF 10 TO 20 INCHES IN THE MOST 
  PERSISTENT LAKE SNOWS.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* VISIBILITIES...AS LOW AS A QUARTER MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN VERY
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND GREATLY
  REDUCED VISIBILITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

IF YOU LOSE POWER AND PLAN ON RUNNING A GENERATOR...MAKE SURE
THAT THE GENERATOR IS LOCATED OUTDOORS AND IS PROPERLY
VENTILATED. SPACE HEATERS SHOULD ALSO BE PROPERLY VENTILATED AND
USED ONLY IF THEY ARE OPERATING PROPERLY. MAKE SURE SNOW DOES NOT
BLOCK EXHAUSTS AND FRESH AIR INTAKES FOR HIGH EFFICIENCY FURNACES
AND WATER HEATERS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

EXPERIMENTAL CONTENT BELOW...DO NOT USE OPERATIONALLY
PLEASE SEE BELOW LINKS FOR MORE INFORMATION ON THIS EXPERIMENT
HTTP://WWW.WEATHER.GOV/BUF/POLYGON_PDD
HTTP://WWW.NWS.NOAA.GOV/OS/NOTIFICATION/PNS15LAKE_EFFECT_SNOW.HTM
TO VIEW THE EXPERIMENTAL POLYGONS PLEASE SEE:
HTTP://WWW.WEATHER.GOV/BUF/LESPOLYGON
COORD...4341 7583 4361 7581 4363 7620 4324 7688 
        4324 7606 
TIME Y16M02D10T1500Z-Y16M02D11T0000Z
COORD...4324 7645 4333 7627 4337 7668 4326 7694 
        4325 7727 4302 7650 
TIME Y16M02D11T0000Z-Y16M02D11T0900Z
COORD...4330 7618 4329 7723 4311 7717 4302 7650 
        4318 7647 4316 7588 
TIME Y16M02D11T0900Z-Y16M02D11T1800Z
COORD...4326 7622 4335 7673 4326 7694 4324 7733 
        4302 7650 4320 7647 
TIME Y16M02D11T1800Z-Y16M02D12T0600Z
COORD...4352 7584 4363 7620 4331 7672 4325 7609 
        4331 7588 
TIME Y16M02D12T0600Z-Y16M02D12T0900Z

$$

NYZ085-101700-
/O.UPG.KBUF.LE.Y.0014.000000T0000Z-160211T2100Z/
/O.EXA.KBUF.LE.W.0006.000000T0000Z-160211T2100Z/
SOUTHERN ERIE-
INCLUDING THE CITIES OF...ORCHARD PARK...SPRINGVILLE
400 AM EST WED FEB 10 2016

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 4 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW WARNING...WHICH IS IN EFFECT UNTIL 4 PM EST THURSDAY. THE
LAKE EFFECT SNOW ADVISORY IS NO LONGER IN EFFECT.

* LOCATIONS...SOUTHERN ERIE COUNTY...WITH THE GREATEST SNOW
  AMOUNTS EXPECTED JUST INLAND FROM LAKE ERIE ACROSS THE BOSTON
  HILLS AND SKI COUNTRY.

* TIMING...THROUGH LATE THURSDAY AFTERNOON.

* ACCUMULATIONS...2 TO 4 INCHES TODAY...2 TO 4 INCHES
  TONIGHT...AND 1 TO 3 INCHES THURSDAY.

* WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* VISIBILITIES...AS LOW AS A QUARTER MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND GREATLY
  REDUCED VISIBILITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

IF YOU LOSE POWER AND PLAN ON RUNNING A GENERATOR...MAKE SURE
THAT THE GENERATOR IS LOCATED OUTDOORS AND IS PROPERLY
VENTILATED. SPACE HEATERS SHOULD ALSO BE PROPERLY VENTILATED AND
USED ONLY IF THEY ARE OPERATING PROPERLY. MAKE SURE SNOW DOES NOT
BLOCK EXHAUSTS AND FRESH AIR INTAKES FOR HIGH EFFICIENCY FURNACES
AND WATER HEATERS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ019-020-101700-
/O.CON.KBUF.LE.W.0006.000000T0000Z-160211T2100Z/
CHAUTAUQUA-CATTARAUGUS-
INCLUDING THE CITIES OF...JAMESTOWN...OLEAN
400 AM EST WED FEB 10 2016

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 4 PM EST
THURSDAY...

* LOCATIONS...CHAUTAUQUA AND CATTARAUGUS COUNTIES...WITH THE
  GREATEST SNOW AMOUNTS EXPECTED JUST INLAND FROM LAKE ERIE ALONG
  THE CHAUTAUQUA RIDGE.

* TIMING...THROUGH LATE THURSDAY AFTERNOON.

* ACCUMULATIONS...2 TO 4 INCHES TODAY...3 TO 5 INCHES TONIGHT...AND
  3 TO 6 INCHES THURSDAY.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* VISIBILITIES...AS LOW AS A QUARTER MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN VERY
  DIFFICULT TRAVEL AT TIMES WITH SNOW COVERED ROADS AND GREATLY
  REDUCED VISIBILITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

IF YOU LOSE POWER AND PLAN ON RUNNING A GENERATOR...MAKE SURE
THAT THE GENERATOR IS LOCATED OUTDOORS AND IS PROPERLY
VENTILATED. SPACE HEATERS SHOULD ALSO BE PROPERLY VENTILATED AND
USED ONLY IF THEY ARE OPERATING PROPERLY. MAKE SURE SNOW DOES NOT
BLOCK EXHAUSTS AND FRESH AIR INTAKES FOR HIGH EFFICIENCY FURNACES
AND WATER HEATERS.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ007-008-101700-
/O.NEW.KBUF.LE.Y.0015.160210T1200Z-160211T0300Z/
JEFFERSON-LEWIS-
INCLUDING THE CITIES OF...WATERTOWN...LOWVILLE
400 AM EST WED FEB 10 2016

...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 7 AM THIS MORNING TO
10 PM EST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW ADVISORY...WHICH IS IN EFFECT FROM 7 AM THIS MORNING TO
10 PM EST THIS EVENING.

* LOCATIONS...JEFFERSON AND LEWIS COUNTIES...WITH THE GREATEST
  SNOW AMOUNTS EXPECTED ACROSS THE TUG HILL REGION.

* TIMING...FROM EARLY THIS MORNING THROUGH LATE THIS EVENING.

* ACCUMULATIONS...2 TO 3 INCHES TODAY AND AN INCH OR TWO THIS
  EVENING...LEADING TO STORM TOTALS OF 3 TO 5 INCHES IN THE MOST
  PERSISTENT LAKE SNOWS.

* WINDS...WEST 10 TO 20 MPH.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN
  HAZARDOUS TRAVEL AT TIMES WITH SNOW COVERED ROADS AND GREATLY
  REDUCED VISIBILITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

NYZ001>003-101700-
/O.NEW.KBUF.LE.Y.0015.160210T2100Z-160211T2100Z/
NIAGARA-ORLEANS-MONROE-
INCLUDING THE CITIES OF...NIAGARA FALLS...MEDINA...ROCHESTER
400 AM EST WED FEB 10 2016

...LAKE EFFECT SNOW ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON
TO 4 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A LAKE EFFECT
SNOW ADVISORY...WHICH IS IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 PM EST THURSDAY.

* LOCATIONS...NIAGARA...ORLEANS...AND MONROE COUNTIES...WITH THE
  GREATEST SNOWFALL AMOUNTS EXPECTED ALONG AND A BIT INLAND FROM
  THE LAKE ONTARIO SHORELINE.

* TIMING...FROM LATE THIS AFTERNOON THROUGH LATE THURSDAY 
  AFTERNOON.

* ACCUMULATIONS...AN INCH OR LESS THIS AFTERNOON...2 TO 4 INCHES 
  TONIGHT...AND 1 TO 3 INCHES THURSDAY...LEADING TO STORM TOTALS 
  OF 4 TO 7 INCHES IN THE MOST PERSISTENT LAKE SNOWS.

* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 35 MPH.

* VISIBILITIES...AS LOW AS A HALF MILE AT TIMES.

* IMPACTS...LAKE EFFECT SNOW AND BLOWING SNOW WILL RESULT IN
  HAZARDOUS TRAVEL AT TIMES WITH SNOW COVERED ROADS AND GREATLY
  REDUCED VISIBILITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN LAKE EFFECT SNOW THE WEATHER CAN VARY FROM LOCALLY HEAVY SNOW
IN NARROW BANDS TO CLEAR SKIES JUST A FEW MILES AWAY. IF YOU WILL
BE TRAVELING ACROSS THE REGION BE PREPARED FOR RAPID CHANGES IN
ROAD AND VISIBILITY CONDITIONS.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE SOURCE OF
WEATHER INFORMATION FOR THE LATEST UPDATES. ADDITIONAL DETAILS
CAN ALSO BE FOUND AT WWW.WEATHER.GOV/BUFFALO.

REPORT SNOW ACCUMULATION TO THE NATIONAL WEATHER SERVICE IN
BUFFALO BY SENDING AN EMAIL TO BUFSTORM.REPORT@NOAA.GOV...POSTING
TO THE NWS BUFFALO FACEBOOK PAGE...OR TWEET...USING THE HASHTAG
BUFWX

&&

$$

JJR

What forecasters said that day

The local office's own words before this lake effect snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this lake effect snow advisory went out at Feb 9, 1:23 PM EST, 2 hours 15 minutes earlier.

Area forecast discussion, Feb 9, 1:23 PM EST, 2 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BUFFALO NY
123 PM EST TUE FEB 9 2016

.SYNOPSIS...
WHILE A STALLED STORM SYSTEM OVER THE LOWER GREAT LAKES WILL KEEP
THE REGION SHROUDED UNDER CLOUDS...ONLY LIGHT NUISANCE
PRECIPITATION IS EXPECTED. AS THE SYSTEM STARTS TO MOVE AWAY
TONIGHT...COLDER AIR WILL DEEPEN IN ITS WAKE WITH ACCUMULATING
LAKE SNOWS DEVELOPING EAST OF BOTH LAKES. THESE LAKE SNOWS WILL
PERSIST INTO THE WEEKEND...AT WHICH TIME OUR FIRST TRUE ARCTIC
AIRMASS OF THE SEASON WILL INVADE THE AREA. FRIGID TEMPERATURES
DURING THE DAY SATURDAY WILL HOVER WITHIN A FEW DEGREES OF ZERO
WITH DANGEROUSLY LOW WIND CHILL VALUES.

&&

.NEAR TERM /THROUGH TONIGHT/...
REGIONAL RADARS CONTINUE TO SHOW SOME SCATTERED LIGHT RETURNS WITH A
MIXTURE OF RAIN AND SNOW ACROSS WESTERN NY. ADDITIONALLY...A LITTLE
ENHANCED SHOWER ACTIVITY IS OCCURRING OFF LAKE ERIE. NO ACCUMULATION
IS EXPECTED AT THIS TIME FOR LOWER ELEVATIONS AS TEMPERATURES HAVE
CLIMBED MOSTLY ABOVE THE FREEZING MARK HERE. ELSEWHERE...ACROSS THE
HIGHER TERRAIN OF THE SOUTHERN TIER WHERE TEMPERATURES ARE NEAR OR
BELOW FREEZING A TRACE UP TO A FEW HUNDREDTHS OF AN INCH WILL BE
POSSIBLE MAINLY ON GRASSY SURFACES. FURTHER TO THE EAST AND
NORTHEAST THERE IS SOME WEAK LIFT IN THE VCNTY OF A SLOW MOVING
FRONTAL BOUNDARY. THIS IS HELPING TO GENERATE A LITTLE BETTER
ORGANIZED AREA OF LIGHT SNOW ACROSS THE NORTH COUNTRY
WITH AGAIN VERY MINIMAL ACCUMULATION EXPECTED.

NOW FOR THE BIGGER PICTURE...AN IMPRESSIVE AND HIGHLY AMPLIFIED
SYNOPTIC PATTERN HAS DEVELOPED OVER THE CONTINENTAL U.S WITH A RIDGE
IN THE WEST AND A DEEP TROUGH COVERING 2/3 OF THE EASTERN U.S. IN
ADDITION TO THIS IMPRESSIVE PATTERN...A NEARLY VERTICALLY STACKED
CLOSED LOW HAS SET UP SHOP OVER THE LOWER GREAT LAKES.
HOWEVER...EVEN WITH THIS FEATURE IN PLACE LITTLE TO NO REAL DYNAMICS
REMAIN. THIS HAS AND WILL LIKELY CONTINUE TO RESULT IN JUST A WEALTH
OF CLOUDS COVER AND SOME SPOTTY PRECIPITATION. WHILE THERE WILL
REMAIN A DEEP ENOUGH DENDRITIC SNOW GROWTH AREA WITHIN THE CLOUD
COVER...THE LOWER BOUNDARY LAYER WILL STRUGGLE TO REMAIN COLD ENOUGH
TO SUPPORT PRIMARILY SNOW UNTIL COLDER AIR ARRIVES.

TONIGHT...THE BROAD STORM SYSTEM WILL SLOWLY 'OPEN UP' AND DRIFT
EAST TO THE ADIRONDACKS. WHILE GENERAL SYNOPTIC LIFT WILL REMAIN
WEAK UNDER THE DEPARTING SYSTEM...DEEPENING COLD AIR IN ITS WAKE
WILL ESTABLISH ENOUGH LAKE DRIVEN INSTABILITY TO GENERATE SOME
LAKE EFFECT SNOW. THIS MESOSCALE LAKE RESPONSE MAY TAKE MUCH OF
THE NIGHT TO GET GOING THOUGH...AS LAKE DELTA T'S SHOULD NOT REACH
CRITICAL VALUES UNTIL AFTER MIDNIGHT. THE MOST LIKELY AREA FOR
LAKE SNOWS BY DAYBREAK WILL BE ACROSS THE SOUTHERN TIER WHERE A
COUPLE INCHES OF ACCUMULATION WILL BE POSSIBLE ALONG THE
CHAUTAUQUA RIDGE. OUTSIDE OF THIS LAKE EFFECT...THERE WILL ONLY BE
SOME SCATTERED LIGHT SNOW SHOWERS.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY/...
THERE IS NO MAJOR SHIFT IN 12Z GUIDANCE...WITH MESOSCALE GUIDANCE
NOW STARTING TO COME INTO BETTER FOCUS. THE MAIN CHANGE IN FORECAST
IS TO INCREASE SNOW AMOUNTS A BIT SOUTH OF LAKE ONTARIO WHERE THERE
WILL LIKELY BE A BRIEF GEORGIAN BAY CONNECTION WEDNESDAY NIGHT INTO
THURSDAY. NO CHANGES TO WSW HEADLINES YET...WITH THE MAJOR
CONSIDERATION BEING THE TIMING AND LOCATION OF SNOW SOUTH OF LAKE
ONTARIO AS WELL AS THE EXISTING WATCH WHICH IS IN PLACE.

THE PERSISTENT SURFACE LOW WHICH HAS BEEN MEANDERING TO OUR WEST
WILL FINALLY MOVE ACROSS THE LOWER LAKES EARLY WEDNESDAY MORNING
BEFORE RIPPLING DOWN THE INVERTED TROUGH INTO NEW ENGLAND BY
WEDNESDAY AFTERNOON. MOIST CYCLONIC FLOW WILL INCREASE AS THE LOW
MOVES EAST OF OUR LATITUDE...WITH SEVERAL MID LEVEL SHORTWAVES
PROVIDING ADDITIONAL LARGE SCALE ASCENT. THE SYNOPTIC SCALE MOISTURE
AND ASCENT COMBINED WITH LOW LEVEL CONVERGENCE WILL PRODUCE
WIDESPREAD LIGHT SNOW WEDNESDAY AND WEDNESDAY EVENING ACROSS THE
REGION. EXPECT ACCUMULATIONS OF AN INCH OR TWO WEDNESDAY AND ANOTHER
INCH OR TWO WEDNESDAY NIGHT OUTSIDE OF LAKE EFFECT AREAS. BY
THURSDAY THE GENERAL SYNOPTIC SNOW WILL BE COMING TO AND END OUTSIDE
OF LAKE EFFECT AREAS.

AS COLDER AIR FILTERS INTO THE REGION WEDNESDAY LAKE ENHANCEMENT
WILL BECOME A CONCERN...TRANSITIONING INTO MORE PURE LAKE EFFECT
WEDNESDAY NIGHT AND THURSDAY SOUTHEAST OF THE LAKES. LAKE INDUCED
EQUILIBRIUM LEVELS STEADILY RISE ON WEDNESDAY TO AROUND 10K FEET BY
AFTERNOON...AND REMAIN THERE THROUGH THURSDAY AS 850MB TEMPS PLUMMET
TO AROUND -22C.

OFF LAKE ERIE...

INITIALLY WEDNESDAY THIS WILL BE MORE OF A LAKE ENHANCEMENT AND
UPSLOPE SCENARIO WITH DEEP SYNOPTIC SCALE MOISTURE AND ASCENT STILL
IN PLACE. WESTERLY FLOW OFF LAKE ERIE WILL PROVIDE ADDITIONAL
MOISTURE AND SOME INSTABILITY...WITH A STRONG UPSLOPE SIGNATURE
NOTED IN MESOSCALE MODEL GUIDANCE ALONG THE CHAUTAUQUA RIDGE AND THE
BOSTON HILLS.

WEDNESDAY NIGHT THE DEEPER SYNOPTIC SCALE MOISTURE AND ASCENT PULL
AWAY...LEAVING MORE OF A PURE LAKE EFFECT SCENARIO TO UNFOLD.
WESTERLY BOUNDARY LAYER FLOW INITIALLY DURING THE EVENING WILL VEER
NORTHWEST OVERNIGHT. THIS WILL TRANSITION THE LAKE ENHANCEMENT INTO
MULTIPLE BANDS OF LAKE EFFECT SNOW PRIMARILY OVER CHAUTAUQUA AND
CATTARAUGUS COUNTIES AND POSSIBLY STILL CLIPPING FAR SOUTHERN ERIE
COUNTY. UPSLOPE WILL STILL PLAY AN IMPORTANT ROLE...WITH THE HIGHER
SNOWFALL RATES LIKELY FOCUSING ON THE HIGHER TERRAIN JUST INLAND
FROM THE LAKE.

THE SAME PATTERN REMAINS IN PLACE THURSDAY WITH NORTHWEST FLOW
PRODUCING MULTIPLE BANDS OF LAKE EFFECT SNOW ACROSS THE WESTERN
SOUTHERN TIER...WITH GREATER AMOUNTS FOCUSING ACROSS THE HIGHER
TERRAIN JUST INLAND FROM THE LAKE. LATE WEDNESDAY NIGHT AND THURSDAY
THE NEWEST MESOSCALE MODEL GUIDANCE SUGGESTS THE POTENTIAL FOR AN
UPSTREAM CONNECTION TO LAKE HURON. THESE UPSTREAM CONNECTIONS ARE
OFTEN THE KEY TO ACHIEVING A MORE SIGNIFICANT LAKE EFFECT SNOW EVENT
WITH NORTHWEST FLOW OFF LAKE ERIE...WITH NOTABLE CONTRIBUTIONS OF
MOISTURE AND CONVERGENCE COMING FROM THE UPSTREAM LAKE.

GIVEN THE ABOVE EVOLUTION...EXPECT THE HEAVIEST SNOW TO FALL
WEDNESDAY WITH THE LAKE ENHANCEMENT AND UPSLOPE...AND THEN AGAIN
LATER WEDNESDAY NIGHT AND THURSDAY MORNING IF THE UPSTREAM
CONNECTION TO LAKE HURON DEVELOPS. WITH THIS IN MIND...WE WILL GO
WITH A LAKE EFFECT SNOW WATCH FOR CHAUTAUQUA...CATTARAUGUS...AND
SOUTHERN ERIE COUNTIES. THE GREATEST AMOUNTS WILL LIKELY FALL IN A
FAIRLY NARROW CORRIDOR JUST INLAND FROM THE LAKE ALONG THE
CHAUTAUQUA RIDGE WHERE TOTALS FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON MAY REACH 12-16 INCHES. TOTALS ACROSS THE BOSTON HILLS MAY
ALSO REACH 8-12 INCHES. AMOUNTS WILL BE CONSIDERABLY LOWER ALONG
THE LAKE ERIE SHORE...AND ALSO FARTHER INLAND ACROSS THE WESTERN
SOUTHERN TIER.

OFF LAKE ONTARIO...

LAKE EFFECT WILL BE MUCH SLOWER TO EVOLVE AS THE BOUNDARY LAYER FLOW
WILL BE DISRUPTED WEDNESDAY BY THE CLOSE PROXIMITY OF THE SURFACE
LOW. EXPECT SOME LAKE ENHANCED SNOW TO DEVELOP LATE WEDNESDAY
AFTERNOON AND EVENING EAST OF THE LAKE ACROSS THE TUG HILL AS COLDER
WESTERLY FLOW BECOMES ESTABLISHED. LATER WEDNESDAY NIGHT THROUGH
THURSDAY BOUNDARY LAYER FLOW BECOMES WNW...ALLOWING MORE PURE LAKE
EFFECT SNOW TO DEVELOP SOUTHEAST OF THE LAKE.

MESOSCALE MODEL GUIDANCE SUGGESTS THE LAKE EFFECT SNOW WILL SPREAD
OUT WITH MULTIPLE BANDS ALONG MUCH OF THE SOUTH SHORE FROM NIAGARA
COUNTY EAST TO OSWEGO COUNTY. THE 290 FLOW WOULD SUGGEST A RELATIVE
MAXIMUM IN SNOWFALL COVERAGE AND INTENSITY ACROSS WAYNE AND NORTHERN
CAYUGA COUNTIES EXTENDING INTO THE SYRACUSE AREA. FARTHER WEST SNOW
SHOWERS WILL ALSO IMPACT THE ROCHESTER AREA. THE CURRENT MESOSCALE
MODEL GUIDANCE SUGGESTS THE UPSTREAM CONNECTION WITH GEORGIAN BAY
WILL END UP ACROSS THE NIAGARA FRONTIER LATE WEDNESDAY NIGHT AND
THURSDAY. SINCE THE UPSTREAM CONNECTION IS NOT FORECAST TO LINK UP
WITH THE BETTER LAKE ONTARIO BANDING ACROSS WAYNE/NORTHERN CAYUGA
COUNTIES...IT APPEARS WATCH/WARNING CRITERIA IS LESS LIKELY OFF LAKE
ONTARIO.

EXPECT SNOWFALL AMOUNTS FROM WEDNESDAY MORNING THROUGH THURSDAY
AFTERNOON OF 2-4 INCHES IN GENERAL ALONG THE SOUTH SHORE OF LAKE
ONTARIO. THE SOMEWHAT BETTER BANDING ACROSS WAYNE AND NORTHERN
CAYUGA COUNTIES MAY PRODUCE 4-7 INCHES. THE WILDCARD IS THE GEORGIAN
BAY BAND...WHICH MAY PRODUCE A FEW LOCALLY HIGHER AMOUNTS TO THE
WEST OF ROCHESTER.

TEMPERATURES WILL CONTINUE THEIR DOWNWARD SLIDE WITH EARLY DAY HIGHS
ON WEDNESDAY IN THE LOWER 30S ACROSS LOWER ELEVATIONS AND MID TO
UPPER 20S ON THE HILLS. TEMPERATURES WILL DROP DURING THE AFTERNOON
AS COLD ADVECTION INCREASES IN THE WAKE OF THE DEPARTING LOW. BY
THURSDAY HIGHS WILL ONLY BE IN THE MID TEENS ACROSS LOWER ELEVATIONS
AND LOWER TEENS ON THE HILLS.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
LAKE EFFECT SNOW WILL WEAKEN INITIALLY THURSDAY EVENING AS A NARROW
SURFACE RIDGE BRIEFLY CROSSES THE LOWER LAKES AND BRINGS INCREASED
SHEAR AND DRY AIR. LATER THURSDAY NIGHT INTO FRIDAY MORNING BOUNDARY
LAYER FLOW WILL BACK MORE WESTERLY...WITH LAKE EFFECT SNOW POSSIBLY
BECOMING BETTER ORGANIZED AGAIN EAST OF THE LAKES.

FRIDAY AFTERNOON THE ARCTIC COLD FRONT WILL APPROACH...THE CROSS THE
REGION FRIDAY EVENING. THE ARCTIC FRONT ITSELF WILL PRODUCE A FEW
SNOW SHOWERS AND POSSIBLY A SNOW SQUALL. EXPECT LAKE EFFECT SNOW TO
INTENSIFY EAST OF THE LAKES JUST AHEAD OF THE ARCTIC FRONT POSSIBLY
PRODUCING DECENT ACCUMULATIONS...THEN MOVE SOUTH OVERNIGHT AND BREAK
APART INTO MULTIPLE BANDS SOUTH OF THE LAKES AS BOUNDARY LAYER FLOW
BECOMES NORTHERLY. LAKE EFFECT SNOW WILL THEN CONTINUE SOUTH OF THE
LAKES SATURDAY THROUGH SUNDAY AS TRUE ARCTIC AIR POURS ACROSS THE
LOWER LAKES. THE INSTABILITY WILL BE EXTREME WITH SUCH A COLD
AIRMASS...BUT ALL AIRMASSES THIS COLD ARE ALSO VERY DRY. THE DRY
AIR...SHORT NORTHERLY FETCH...AND POOR CLOUD MICROPHYSICS IN THE
BITTERLY COLD AIR WILL LIKELY KEEP ACCUMULATIONS RELATIVELY MINOR
FOR SATURDAY THROUGH SUNDAY.

THE BIG STORY THIS WEEKEND WILL BE THE EXTREME COLD. MEDIUM RANGE
GUIDANCE REMAINS CONSISTENT IN BRINGING THE COLDEST AIRMASS OF THE
WINTER BY FAR INTO THE LOWER LAKES AND NEW ENGLAND. BOTH THE GFS AND
ECMWF TAKE 850MB TEMPS DOWN TO AROUND -32C ON SATURDAY. TO PUT THIS
IN PROSPECTIVE...THE COLDEST TEMPERATURE EVER RECORDED AT 850MB ON A
KBUF SOUNDING IN THE MONTH OF FEBRUARY IS -28C...AND THE COLDEST
EVER RECORDED FOR ANY MONTH IS -32C. THIS FRIGID AIRMASS WILL KEEP
HIGHS IN THE LOWER SINGLE NUMBERS ON SATURDAY...AND IF THE TIMING
WORKS OUT WITH THE CORE OF THE COLD CROSSING DURING THE DAY HIGHS
MAY NOT GET ABOVE ZERO. LOWS SATURDAY NIGHT WILL BE BELOW ZERO
EVERYWHERE...AND 20 BELOW OR BETTER ACROSS THE NORTH COUNTRY WITH NO
LAKE INFLUENCE. THE COMBINATION OF BITTER COLD AND WIND WILL PRODUCE
DANGEROUSLY COLD WIND CHILLS.

THE CORE OF THE COLD BEGINS TO MOVE OFF BY SUNDAY AFTERNOON WITH A
RAPID WARM-UP TO NEAR AVERAGE BY MONDAY. THE NEXT SYSTEM WILL
APPROACH BY MONDAY WITH A CHANCE OF ANOTHER GENERAL LIGHT SNOW.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
PRIMARILY MVFR CIGS WILL CONTINUE THE REST OF THE AFTERNOON FOR
WESTERN NY...WITH SLOWLY DETERIORATING CONDITIONS TOWARD IFR
OVERNIGHT AND/OR WEDNESDAY.  EAST OF LAKE ONTARIO HOWEVER...EXPECT A
PERIOD OF IMPROVING/VFR CONDITIONS AFTER AN AREA OF SNOW MOVES
NORTHEAST OUT OF THE REGION...BEFORE IFR CONDITIONS RETURN LATER
WEDNESDAY.

OUTLOOK...
WEDNESDAY THROUGH THURSDAY...MVFR/IFR IN PERIODS OF SNOW.
FRIDAY...MVFR. A CHANCE OF SNOW SHOWERS.
SATURDAY AND SUNDAY...VFR/MVFR...CHANCE OF SNOW SHOWERS.

&&

.MARINE...
A BROAD...STATIONARY STORM SYSTEM WILL BE CENTERED OVER THE LOWER
GREAT LAKES TODAY. THIS WILL RESULT IN LIGHT TO MODERATE BREEZES
THIS MORNING...THEN AS WE PROGRESS THROUGH THE MIDDAY AND
AFTERNOON...SOUTHWEST WINDS WILL FRESHEN ON LAKE ERIE. WINDS AND
WAVES WILL LIKELY REACH SCA LEVELS ON LK ERIE BY LATE AFTERNOON...
AND WILL CERTAINLY BE IN PLACE TONIGHT. MEANWHILE WINDS WILL REMAIN
RELATIVELY LIGHT ON LAKE ONTARIO.

ON WEDNESDAY...THE LARGE STORM SYSTEM WILL PUSH EAST ACROSS NEW
ENGLAND AND THE CANADIAN MARITIMES. THIS WILL PROMOTE FRESH TO
STRONG WESTERLIES ON BOTH LAKES ERIE AND ONTARIO...WHICH WILL BECOME
MORE NORTHWESTERLY WEDNESDAY NIGHT. A SCA WILL BE NEEDED TO BE
ISSUED FOR LK ONTARIO IN A LATER FORECAST PACKAGE.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...LAKE EFFECT SNOW WATCH FROM 1 AM EST WEDNESDAY THROUGH
     THURSDAY AFTERNOON FOR NYZ019-020-085.
MARINE...SMALL CRAFT ADVISORY UNTIL 2 PM EST THURSDAY FOR LEZ040-041.

&&

SYNOPSIS...AR/RSH
NEAR TERM...AR/RSH
SHORT TERM...APFFEL/HITCHCOCK
LONG TERM...APFFEL/HITCHCOCK
AVIATION...AR/RSH
MARINE...AR/RSH
Hazardous weather outlook, Feb 9, 4:06 AM EST, 11 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BUFFALO NY
406 AM EST TUE FEB 9 2016

NYZ001-002-013-014-021-100915-
NIAGARA-ORLEANS-LIVINGSTON-ONTARIO-ALLEGANY-
406 AM EST TUE FEB 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

THE CHANCE OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

WIDESPREAD MAINLY LIGHT SNOW WILL CONTINUE WEDNESDAY THROUGH
THURSDAY MORNING WITH A FEW INCHES OF ACCUMULATION.

AN ARCTIC COLD FRONT WILL CROSS THE REGION FRIDAY EVENING. THIS
MAY BE ACCOMPANIED BY A HEAVY SNOW SQUALL.

A BITTERLY COLD ARCTIC AIRMASS WILL ARRIVE THIS WEEKEND. HIGH
TEMPERATURES WILL LIKELY REMAIN IN THE SINGLE DIGITS ON SATURDAY
WITH LOW TEMPERATURES BELOW ZERO. THE COMBINATION OF FRIGID
TEMPERATURES AND WIND MAY PRODUCE DANGEROUSLY COLD WIND CHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT THEIR SNOW AMOUNTS.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

NYZ019-020-085-100915-
CHAUTAUQUA-CATTARAUGUS-SOUTHERN ERIE-
406 AM EST TUE FEB 9 2016

...LAKE EFFECT SNOW WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   LAKE EFFECT SNOW WATCH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   LAKE EFFECT SNOW WATCH.

ADDITIONAL LAKE EFFECT SNOW MAY DEVELOP LATE THURSDAY NIGHT
THROUGH FRIDAY EVENING. AN ARCTIC COLD FRONT WILL THEN CROSS THE
REGION FRIDAY EVENING AND MAY PRODUCE A HEAVY SNOW SQUALL.

A BITTERLY COLD ARCTIC AIRMASS WILL ARRIVE THIS WEEKEND. HIGH
TEMPERATURES WILL LIKELY REMAIN IN THE SINGLE DIGITS ON SATURDAY
WITH LOW TEMPERATURES BELOW ZERO. THE COMBINATION OF FRIGID
TEMPERATURES AND WIND MAY PRODUCE DANGEROUSLY COLD WIND CHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT THEIR SNOW AMOUNTS.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

NYZ010>012-100915-
NORTHERN ERIE-GENESEE-WYOMING-
406 AM EST TUE FEB 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

THE CHANCE OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

LAKE EFFECT SNOW MAY DEVELOP FRIDAY AND FRIDAY EVENING. AN ARCTIC
COLD FRONT WILL THEN MOVE THROUGH THE REGION FRIDAY EVENING
AND MAY PRODUCE A HEAVY SNOW SQUALL.

A BITTERLY COLD ARCTIC AIRMASS WILL ARRIVE THIS WEEKEND. HIGH
TEMPERATURES WILL LIKELY REMAIN IN THE SINGLE DIGITS ON SATURDAY
WITH LOW TEMPERATURES BELOW ZERO. THE COMBINATION OF FRIGID
TEMPERATURES AND WIND MAY PRODUCE DANGEROUSLY COLD WIND CHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT THEIR SNOW AMOUNTS.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

NYZ003>005-100915-
MONROE-WAYNE-NORTHERN CAYUGA-
406 AM EST TUE FEB 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL NEW YORK
AND WESTERN NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

THE CHANCE OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

LAKE EFFECT SNOW IS EXPECTED TO DEVELOP LATER WEDNESDAY NIGHT AND
CONTINUE THROUGH THURSDAY NIGHT...BRINGING MODERATE ACCUMULATIONS
OF SNOW IN PERSISTENT BANDS.

AN ARCTIC COLD FRONT WILL CROSS THE REGION FRIDAY EVENING
AND MAY PRODUCE A HEAVY SNOW SQUALL.

A BITTERLY COLD ARCTIC AIRMASS WILL ARRIVE THIS WEEKEND. HIGH
TEMPERATURES WILL LIKELY REMAIN IN THE SINGLE DIGITS ON SATURDAY
WITH LOW TEMPERATURES BELOW ZERO. THE COMBINATION OF FRIGID
TEMPERATURES AND WIND MAY PRODUCE DANGEROUSLY COLD WIND CHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT THEIR SNOW AMOUNTS.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

NYZ006>008-100915-
OSWEGO-JEFFERSON-LEWIS-
406 AM EST TUE FEB 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

THE CHANCE OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

LAKE ENHANCED SNOWFALL WILL DEVELOP EAST OF LAKE ONTARIO LATE
WEDNESDAY AFTERNOON AND EVENING WITH ACCUMULATING SNOWFALL. THE
GREATEST AMOUNTS ARE LIKELY TO BE ACROSS THE TUG HILL PLATEAU.

ADDITIONAL LAKE EFFECT SNOW MAY DEVELOP FRIDAY. AN ARCTIC COLD
FRONT WILL THEN CROSS THE REGION FRIDAY EVENING...AND MAY PRODUCE
A HEAVY SNOW SQUALL.

A BITTERLY COLD ARCTIC AIRMASS WILL ARRIVE THIS WEEKEND. HIGH
TEMPERATURES WILL LIKELY REMAIN IN THE SINGLE DIGITS ON SATURDAY
WITH LOW TEMPERATURES BELOW ZERO. THE COMBINATION OF FRIGID
TEMPERATURES AND WIND MAY PRODUCE DANGEROUSLY COLD WIND CHILLS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT THEIR SNOW AMOUNTS.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

LEZ020-040-041-LOZ030-042>045-062>065-100915-
UPPER NIAGARA RIVER AND BUFFALO HARBOR-
LAKE ERIE NEARSHORE WATERS FROM RIPLEY TO DUNKIRK-
LAKE ERIE NEARSHORE WATERS FROM DUNKIRK TO BUFFALO-
LOWER NIAGARA RIVER-
LAKE ONTARIO NEARSHORE WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
LAKE ONTARIO NEARSHORE WATERS FROM HAMLIN BEACH TO SODUS BAY-
LAKE ONTARIO NEARSHORE WATERS FROM SODUS BAY TO MEXICO BAY-
LAKE ONTARIO NEARSHORE WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE
RIVER-
LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH-
LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO SODUS BAY-
LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO MEXICO BAY-
LAKE ONTARIO OPEN WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE RIVER-
406 AM EST TUE FEB 9 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE AND LAKE
ONTARIO.

.DAY ONE...TODAY AND TONIGHT.

THE CHANCE OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

HEAVY FREEZING SPRAY IS POSSIBLE FRIDAY NIGHT THROUGH SATURDAY
NIGHT AS BITTERLY COLD ARCTIC AIR CROSSES LAKES ERIE AND ONTARIO.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES...
AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN
BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF

HITCHCOCK

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 9, 3:36 AM ESTLake Effect Snow WatchBUFCattaraugus, Chautauqua, Erie12 hr
Feb 9, 3:57 AM ESTSmall Craft AdvisoryBUF5 days
Feb 9, 3:38 PM ESTLake Effect Snow WarningBUFCattaraugus, Cayuga, Chautauqua, Erie, Genesee, Jefferson and 7 more3 days

Nearby

Lake Effect Snow Advisories in New York, 2016Every lake effect snow advisory in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.