Alert archive / New York / Lake Effect Snow Warnings in 2021

Lake Effect Snow Warning 2, NWS Buffalo, NY

January 18, 2021Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this lake effect snow warning at Jan 18, 2021, 1:28 PM EST for Jefferson County, Lewis County, Oswego County, New York. It took effect at Jan 19, 2021, 10:00 AM EST. It was in force for 20 hr. 13 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jan 18, 2021, 1:28 PM EST (18:28 UTC)
In effect from
Jan 19, 2021, 10:00 AM EST
Expired
Jan 20, 2021, 6:00 AM EST
In force
20 hr
Issued by
NWS Buffalo, NY

Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 18 km from the middle of the area, began a volume at 18:27 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.

What was reported inside it

TimeReportWhereRemark
Jan 19, 2:30 PM ESTSNOW 4Henderson, NY
Jan 19, 3:00 PM ESTSNOW 4.52 N Richland, NYFROM 9 AM TO 3 PM, MOST FELL AFTER NOON.
Jan 19, 4:17 PM ESTSNOW 7.34 Sw Barnes Corners, NYFROM 6 AM TO 415 PM.
Jan 19, 6:00 PM ESTSNOW 7Lyons Falls, NYRELAYED BY BROADCAST MEDIA.
Jan 19, 6:30 PM ESTSNOW 6Henderson, NYSTORM TOTAL.
Jan 19, 6:30 PM ESTSNOW 6.8Watertown, NYSTORM TOTAL.
Jan 19, 9:20 PM ESTSNOW 7Croghan, NYRELAYED BY BROADCAST MEDIA.
Jan 19, 9:20 PM ESTSNOW 17Barnes Corners, NYRELAYED BY BROADCAST MEDIA.
Jan 19, 9:29 PM ESTSNOW 4Philadelphia, NYRELAYED BY BROADCAST MEDIA.
Jan 20, 4:00 AM ESTSNOW 101 Nw Constableville, NY
Jan 20, 5:30 AM ESTSNOW 4.55 Ssw Harrisville, NYCOCORAHS STATION NY-LW-2 HARRISVILLE 4.7 SSW.
Jan 20, 6:00 AM ESTSNOW 145 W Constableville, NY
Jan 20, 6:00 AM ESTSNOW 14.64 Sw Barnes Corners, NY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.5 hours before the alert went out and 205 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, Albany, NY at 12:00Z on 2021-01-18Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.19395878Sfc1 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
966 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

252 
WWUS41 KBUF 181828
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
128 PM EST Mon Jan 18 2021

NYZ007-008-190300-
/O.UPG.KBUF.WS.A.0002.210119T1500Z-210120T1100Z/
/O.NEW.KBUF.LE.W.0002.210119T1500Z-210120T1200Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
128 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 10 AM TUESDAY TO 7 AM
EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow accumulations
  of 6 to 12 inches in the most persistent lake snows. The most
  persistent and heaviest snow is expected on the Tug Hill 
  Plateau Tuesday afternoon and Tuesday night.

* WHERE...Jefferson and Lewis counties.

* WHEN...From 10 AM Tuesday to 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Tuesday evening commute
  and Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7586 4352 7539 4362 7545 4356 7643 
        4336 7677 4331 7695 4323 7679 4322 7626 4328 7620 
        4318 7590 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ006-190300-
/O.NEW.KBUF.LE.W.0002.210119T1500Z-210120T1200Z/
Oswego-
Including the city of Oswego
128 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 10 AM TUESDAY TO 7 AM
EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow accumulations
  of 6 to 12 inches in the most persistent lake snows. The most
  persistent and heaviest snow will occur on the Tug Hill Plateau
  Tuesday afternoon through Tuesday night.

* WHERE...Oswego county.

* WHEN...From 10 AM Tuesday to 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7586 4352 7539 4362 7545 4356 7643 
        4336 7677 4331 7695 4323 7679 4322 7626 4328 7620 
        4318 7590 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ010-190300-
/O.UPG.KBUF.WW.Y.0004.210118T2300Z-210120T0000Z/
/O.EXB.KBUF.LE.W.0001.210118T2300Z-210120T0000Z/
Northern Erie-
Including the city of Buffalo
128 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 6 PM THIS EVENING TO
7 PM EST TUESDAY...

* WHAT...Heavy lake effect snow expected. Total snow  
  accumulations of 6 to 12 inches in the most persistent lake 
  snows. 

* WHERE...Northern Erie county. The greatest snow amounts in
  northern portions of Erie county will occur from Lackawanna and
  Blasdell to West Seneca, Elma and Marilla and points southward.

* WHEN...From 6 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the Tuesday morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4268 7817 4290 7811 4281 7890 4232 7975 
        4214 7977 4215 7956 4228 7934 4231 7916 4247 7877 
        4248 7862 
TIME Y21M01D19T0300Z-Y21M01D19T0900Z
COORD...4277 7819 4286 7817 4285 7856 4287 7856 
        4279 7893 4268 7913 4257 7891 4256 7855 4268 7841 
        4271 7826 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ012-019-020-085-190300-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210119T1200Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
128 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 8 inches in the most persistent lake snows. Additional lake
  effect snow is expected Tuesday and beyond, so this warning may
  need to be adjusted later.

* WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie 
  counties.

* WHEN...Until 7 AM EST Tuesday. 

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening commute and the morning
  commute on Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4264 7842 4269 7853 4271 7897 4266 7913 
        4232 7975 4199 7977 4204 7929 4224 7887 4225 7875 
        4236 7852 
TIME Y21M01D18T1800Z-Y21M01D19T0300Z
COORD...4268 7817 4290 7811 4281 7890 4232 7975 
        4214 7977 4215 7956 4228 7934 4231 7916 4247 7877 
        4248 7862 
TIME Y21M01D19T0300Z-Y21M01D19T0900Z
COORD...4250 7853 4252 7850 4250 7859 4254 7850 
        4252 7859 4250 7862 4247 7877 4245 7878 4247 7869 
        4244 7869 4248 7862 
TIME Y21M01D19T0300Z-Y21M01D19T0900Z
COORD...4277 7819 4286 7817 4285 7856 4287 7856 
        4279 7893 4268 7913 4257 7891 4256 7855 4268 7841 
        4271 7826 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ011-190300-
/O.EXB.KBUF.WW.Y.0004.210119T0000Z-210120T0000Z/
Genesee-
Including the city of Batavia
128 PM EST Mon Jan 18 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO
7 PM EST TUESDAY...

* WHAT...Lake effect snow expected. Total snow accumulations of 5
  to 10 inches in the most persistent lake snows. 

* WHERE...Genesee county. The most snow will occur over far
  southwest portions of the county, to the south of Corfu.

* WHEN...From 7 PM this evening to 7 PM EST Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the Tuesday morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$

NYZ021-190300-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210119T1000Z/
Allegany-
Including the city of Wellsville
128 PM EST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST
TUESDAY...

* WHAT...Lake effect snow. Additional snow accumulations of 2 to 
  4 inches in the most persistent lake snows.

* WHERE...Allegany county.

* WHEN...Until 5 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions, especially over the
  northwest portion of Allegany county. The hazardous conditions 
  could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$
JLA
10 follow-up statements
506 
WWUS41 KBUF 190209
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
909 PM EST Mon Jan 18 2021

NYZ012-019-020-085-191200-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210119T1200Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
909 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
TUESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  4 to 8 inches in the most persistent lake snows through Tuesday
  morning. Some additional accumulation is possible during the day
  Tuesday.

* WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie 
  counties.

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning commute. Heavy snow will
  also impact Interstate 90.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4268 7817 4287 7808 4286 7841 4289 7853 
        4279 7893 4232 7975 4214 7977 4215 7956 4228 7934 
        4256 7855 
TIME Y21M01D19T0200Z-Y21M01D19T0900Z
COORD...4257 7867 4258 7873 4256 7873 4255 7867 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z
COORD...4279 7819 4287 7826 4288 7862 4290 7862 
        4290 7891 4279 7890 4264 7919 4260 7917 4256 7852 
        4271 7820 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ010-191200-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T0000Z/
Northern Erie-
Including the city of Buffalo
909 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 PM EST
TUESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 10 inches in the most persistent lake snows. Winds gusting
  as high as 35 mph.

* WHERE...Northern Erie county. The greatest snow amounts in
  northern portions of Erie county will occur from Lackawanna and
  Blasdell to West Seneca, Elma and Marilla and points southward.

* WHEN...Until 7 PM EST Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4268 7817 4287 7808 4286 7841 4289 7853 
        4279 7893 4232 7975 4214 7977 4215 7956 4228 7934 
        4256 7855 
TIME Y21M01D19T0200Z-Y21M01D19T0900Z
COORD...4279 7819 4287 7826 4288 7862 4290 7862 
        4290 7891 4279 7890 4264 7919 4260 7917 4256 7852 
        4271 7820 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ006>008-191200-
/O.CON.KBUF.LE.W.0002.210119T1500Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
909 PM EST Mon Jan 18 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY
TO 7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow accumulations
  of 6 to 12 inches in the most persistent lake snows. The most 
  persistent and heaviest snow is expected on the Tug Hill Plateau
  Tuesday afternoon and Tuesday night.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 10 AM Tuesday to 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7550 4350 7539 4362 7545 4362 7570 
        4356 7643 4331 7695 4332 7659 4322 7650 4320 7587 
        4342 7586 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ011-191200-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210120T0000Z/
Genesee-
Including the city of Batavia
909 PM EST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST
TUESDAY...

* WHAT...Lake effect snow. Additional snow accumulations of 4 to 8 
  inches in the most persistent lake snows. Winds gusting as high 
  as 35 mph.

* WHERE...Genesee county. The most snow will occur over far
  southwest portions of the county, to the south of Corfu.

* WHEN...Until 7 PM EST Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$

NYZ021-191000-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210119T1000Z/
Allegany-
Including the city of Wellsville
909 PM EST Mon Jan 18 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM EST
TUESDAY...

* WHAT...Lake effect snow. Additional snow accumulations of up 
  to 2 inches in the most persistent lake snows.

* WHERE...Allegany county.

* WHEN...Until 5 AM EST Tuesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$

Apffel
417 
WWUS41 KBUF 190557
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1257 AM EST Tue Jan 19 2021

NYZ021-190700-
/O.CAN.KBUF.WW.Y.0004.000000T0000Z-210119T1000Z/
Allegany-
Including the city of Wellsville
1257 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

While additional snow showers will be possible overnight, the
widespread accumulating lake snows have lifted to the north.
Little if any additional snow accumulations are expected
overnight. 

$$

NYZ012-019-020-085-191200-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210119T1200Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
1257 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST THIS
MORNING...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 4 to 8 inches in the most persistent lake snows through 
  Tuesday morning. Some additional accumulation is possible 
  during the day Tuesday.

* WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie 
  counties.

* WHEN...Until 7 AM EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning commute. Heavy snow will 
  also impact Interstate 90.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If traveling, be prepared for rapidly changing road conditions 
and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4268 7817 4287 7808 4286 7841 4289 7853 
        4279 7893 4232 7975 4214 7977 4215 7956 4228 7934 
        4256 7855 
TIME Y21M01D19T0200Z-Y21M01D19T0900Z
COORD...4257 7867 4258 7873 4256 7873 4255 7867 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z
COORD...4279 7819 4287 7826 4288 7862 4290 7862 
        4290 7891 4279 7890 4264 7919 4260 7917 4256 7852 
        4271 7820 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ010-191400-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T0000Z/
Northern Erie-
Including the city of Buffalo
1257 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 5 to 10 inches in the most persistent lake snows. Winds 
  gusting as high as 35 mph.

* WHERE...Northern Erie county. The greatest snow amounts in 
  northern portions of Erie county will occur from Lackawanna 
  and Blasdell to West Seneca, Elma and Marilla and points 
  southward.

* WHEN...Until 7 PM EST Tuesday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4268 7817 4287 7808 4286 7841 4289 7853 
        4279 7893 4232 7975 4214 7977 4215 7956 4228 7934 
        4256 7855 
TIME Y21M01D19T0200Z-Y21M01D19T0900Z
COORD...4279 7819 4287 7826 4288 7862 4290 7862 
        4290 7891 4279 7890 4264 7919 4260 7917 4256 7852 
        4271 7820 
TIME Y21M01D19T0900Z-Y21M01D20T0000Z

$$

NYZ006>008-191400-
/O.CON.KBUF.LE.W.0002.210119T1500Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
1257 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 6 to 12 inches in the most persistent lake 
  snows. The most persistent and heaviest snow is expected on 
  the Tug Hill Plateau Tuesday afternoon and Tuesday night.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 10 AM Tuesday to 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7550 4350 7539 4362 7545 4362 7570 
        4356 7643 4331 7695 4332 7659 4322 7650 4320 7587 
        4342 7586 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ011-191400-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210120T0000Z/
Genesee-
Including the city of Batavia
1257 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Lake effect snow. Additional snow accumulations of 4 to 
  8 inches in the most persistent lake snows. Winds gusting as 
  high as 35 mph.

* WHERE...Genesee county. The most snow will occur over far 
  southwest portions of the county, to the south of Corfu.

* WHEN...Until 7 PM EST Tuesday.

* IMPACTS...Travel could be difficult, mainly over the western
  half of the county. Areas of blowing snow could significantly
  reduce visibility. The hazardous conditions could impact the
  morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$
417 
WWUS41 KBUF 190928
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
428 AM EST Tue Jan 19 2021

NYZ020-191730-
/O.CAN.KBUF.LE.W.0001.000000T0000Z-210119T1200Z/
/O.EXB.KBUF.WW.Y.0004.210119T2300Z-210120T1500Z/
Cattaraugus-
Including the city of Olean
428 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
10 AM EST WEDNESDAY...
...LAKE EFFECT SNOW WARNING IS CANCELLED...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches.

* WHERE...Cattaraugus county.

* WHEN...From 6 PM this evening to 10 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow will result in snow covered roads and limited
visibilities. Slow down and use caution while driving.

Submit snow reports through our website or social media.

&&

$$

NYZ012-019-085-191730-
/O.EXT.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Southern Erie-
Including the cities of Warsaw, Jamestown, Orchard Park, 
and Springville
428 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING NOW IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 7 to 13 inches in the most persistent lake snows. Winds 
  gusting as high as 35 mph.

* WHERE...Wyoming, Chautauqua, and Southern Erie counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions will impact the morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If traveling, be prepared for rapidly changing road conditions 
and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4290 7811 4296 7837 4288 7889 4279 7890 
        4264 7919 4257 7911 4253 7888 4254 7853 4262 7845 
        4267 7823 
TIME Y21M01D19T0900Z-Y21M01D19T2100Z
COORD...4256 7823 4271 7823 4277 7843 4275 7867 
        4267 7901 4236 7953 4228 7955 4229 7919 4239 7876 
        4246 7842 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4256 7845 4261 7856 4259 7890 4237 7934 
        4217 7959 4211 7956 4210 7931 4218 7918 4227 7872 
        4237 7855 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ010-191730-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T0000Z/
Northern Erie-
Including the city of Buffalo
428 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 9 inches in the most persistent lake snows south of
  Buffalo. Winds gusting as high as 35 mph.

* WHERE...Northern Erie county.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Travel could be very difficult, especially south of
  Buffalo. The hazardous conditions will impact the morning and 
  evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4290 7811 4296 7837 4288 7889 4279 7890 
        4264 7919 4257 7911 4253 7888 4254 7853 4262 7845 
        4267 7823 
TIME Y21M01D19T0900Z-Y21M01D19T2100Z

$$

NYZ006>008-191730-
/O.CON.KBUF.LE.W.0002.210119T1500Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
428 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 7 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 7 to 13 inches in the most persistent lake 
  snows. Winds gusting as high as 35 mph.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 10 AM this morning to 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult, especially between
  Watertown and the Tug Hill Plateau. The hazardous conditions
  could impact the evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7550 4350 7539 4362 7545 4362 7570 
        4356 7643 4331 7695 4332 7659 4322 7650 4320 7587 
        4342 7586 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ011-191730-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210120T0000Z/
Genesee-
Including the city of Batavia
428 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Lake effect snow. Additional snow accumulations of 4 to 8
  inches in the most persistent lake snows south and west of
  Batavia.

* WHERE...Genesee county.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the morning and evening commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.

Submit snow reports through our website or social media.

&&

$$
456 
WWUS41 KBUF 191645
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1145 AM EST Tue Jan 19 2021

NYZ010-191745-
/O.CAN.KBUF.LE.W.0001.000000T0000Z-210120T0000Z/
Northern Erie-
Including the city of Buffalo
1145 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING IS CANCELLED...

Occasional lake effect snow showers will deposit an additional 
inch or two of snow through the afternoon well to the south of 
Buffalo, but the potential for heavier lake effect snow has ended.

$$

NYZ011-191745-
/O.CAN.KBUF.WW.Y.0004.000000T0000Z-210120T0000Z/
Genesee-
Including the city of Batavia
1145 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Occasional light lake effect snow showers will continue to
straddle the Genesee and Wyoming county border, but most of the
snow will remain south of Genesee county through the afternoon.

$$

NYZ012-019-085-200045-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Southern Erie-
Including the cities of Warsaw, Jamestown, Orchard Park, 
and Springville
1145 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 10 inches in the most persistent lake snows. Snowfall rates
  of 1 to 2 inches per hour during the heaviest snow showers. 
  Winds gusting as high as 35 mph will lead to patchy blowing snow
  in open areas.

* WHERE...Wyoming, Chautauqua, and Southern Erie counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult with snow covered
  roads. The hazardous conditions could impact the evening commute
  and the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4290 7811 4296 7837 4288 7889 4279 7890 
        4264 7919 4257 7911 4253 7888 4254 7853 4262 7845 
        4267 7823 
TIME Y21M01D19T0900Z-Y21M01D19T2100Z
COORD...4256 7823 4271 7823 4277 7843 4275 7867 
        4267 7901 4236 7953 4228 7955 4229 7919 4239 7876 
        4246 7842 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4256 7845 4261 7856 4259 7890 4237 7934 
        4217 7959 4211 7956 4210 7931 4218 7918 4227 7872 
        4237 7855 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ006>008-200045-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
1145 AM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  7 to 14 inches in the most persistent lake snows. The most snow
  will occur on the Tug Hill Plateau. Winds gusting as high as 35
  mph will result in patchy blowing snow in open areas.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the evening commute and the
  morning commute on Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4399 7547 4420 7561 4418 7604 4408 7639 
        4386 7637 4383 7629 4370 7623 4357 7625 4363 7555 
        4366 7548 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4386 7529 4409 7542 4408 7576 4398 7598 
        4384 7617 4372 7622 4365 7617 4356 7595 4348 7561 
        4379 7542 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4342 7550 4350 7539 4362 7545 4362 7570 
        4356 7643 4331 7695 4332 7659 4322 7650 4320 7587 
        4342 7586 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ020-200045-
/O.EXT.KBUF.WW.Y.0004.210119T1645Z-210120T1500Z/
Cattaraugus-
Including the city of Olean
1145 AM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 5 to 8 inches. 
  The most snow will occur over higher terrain in northern 
  portions of the county through this evening. Lighter more 
  widespread snows are expected tonight into Wednesday morning.

* WHERE...Cattaraugus county.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow will result in snow covered roads and limited
visibilities. Slow down and use caution while driving.

Submit snow reports through our website or social media.

&&

$$
JLA
515 
WWUS41 KBUF 191754
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1254 PM EST Tue Jan 19 2021

NYZ012-019-085-200200-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Southern Erie-
Including the cities of Warsaw, Jamestown, Orchard Park, 
and Springville
1254 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 5 to 10 inches in the most persistent lake snows. Snowfall 
  rates of 1 to 2 inches per hour during the heaviest snow 
  showers. Winds gusting as high as 35 mph will lead to patchy 
  blowing snow in open areas.

* WHERE...Wyoming, Chautauqua, and Southern Erie counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult with snow covered 
  roads. The hazardous conditions could impact the evening 
  commute and the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4267 7830 4274 7831 4275 7864 4270 7886 
        4270 7909 4258 7929 4252 7923 4251 7895 4252 7877 
        4256 7845 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4263 7836 4268 7886 4259 7911 4240 7938 
        4233 7936 4233 7909 4244 7890 4249 7868 4247 7851 
        4250 7834 
TIME Y21M01D19T2100Z-Y21M01D20T1500Z

$$

NYZ006>008-200200-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
1254 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 7 to 14 inches in the most persistent lake snows. The most 
  snow will occur on the Tug Hill Plateau. Winds gusting as high 
  as 35 mph will result in patchy blowing snow in open areas.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the evening commute and the 
  morning commute on Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4408 7515 4417 7531 4419 7598 4408 7639 
        4386 7637 4372 7622 4357 7625 4361 7561 4367 7551 
        4371 7514 
TIME Y21M01D19T1500Z-Y21M01D19T2100Z
COORD...4408 7515 4410 7551 4409 7579 4392 7609 
        4376 7620 4362 7615 4348 7561 4367 7551 4370 7541 
        4371 7514 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4360 7513 4374 7516 4361 7558 4356 7643 
        4333 7690 4322 7653 4328 7620 4320 7587 4342 7586 
        4342 7550 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ020-200200-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210120T1500Z/
Cattaraugus-
Including the city of Olean
1254 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 5 to 8 inches. 
  The most snow will occur over higher terrain in northern 
  portions of the county through this evening. Lighter more 
  widespread snows are expected tonight into Wednesday morning.

* WHERE...Cattaraugus county.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow will result in snow covered roads and limited
visibilities. Slow down and use caution while driving.

Submit snow reports through our website or social media.

&&

$$
JLA
414 
WWUS41 KBUF 191934
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
234 PM EST Tue Jan 19 2021

NYZ012-019-085-200345-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Southern Erie-
Including the cities of Warsaw, Jamestown, Orchard Park, 
and Springville
234 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 9 inches in the most persistent lake snows. Winds gusting
  as high as 35 mph.

* WHERE...Wyoming, Chautauqua, and Southern Erie counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the evening commute and the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4239 7903 4244 7890 4259 7834 4263 7836 
        4266 7886 4253 7920 4225 7976 4201 7976 4203 7948 
        4221 7920 
TIME Y21M01D19T1900Z-Y21M01D20T1500Z

$$

NYZ006>008-200345-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
234 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 6 to 12 inches in the most persistent lake snows. Winds 
  gusting as high as 35 mph.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow could significantly reduce visibility. The
  hazardous conditions could impact the evening commute and the
  Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4408 7515 4417 7531 4419 7598 4408 7639 
        4386 7637 4372 7622 4357 7625 4361 7561 4367 7551 
        4371 7514 
TIME Y21M01D19T1900Z-Y21M01D19T2100Z
COORD...4408 7515 4410 7551 4409 7579 4392 7609 
        4376 7620 4362 7615 4348 7561 4367 7551 4370 7541 
        4371 7514 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4360 7513 4374 7516 4361 7558 4356 7643 
        4333 7690 4322 7653 4328 7620 4320 7587 4342 7586 
        4342 7550 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

NYZ020-200345-
/O.CON.KBUF.WW.Y.0004.000000T0000Z-210120T1500Z/
Cattaraugus-
Including the city of Olean
234 PM EST Tue Jan 19 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 5 to 8 inches. The
  heaviest snow will occur over northern portions of the county.

* WHERE...Cattaraugus county.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening commute and the Wednesday
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow will result in snow covered roads and limited
visibilities. Slow down and use caution while driving.

Submit snow reports through our website or social media.

&&

$$
JLA
750 
WWUS41 KBUF 192336
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
636 PM EST Tue Jan 19 2021

NYZ020-200745-
/O.UPG.KBUF.WW.Y.0004.000000T0000Z-210120T1500Z/
/O.EXA.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Cattaraugus-
Including the city of Olean
636 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 10 AM EST WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 6 to 10 inches in the most persistent lake snows.

* WHERE...Cattaraugus county. The heaviest snow will fall in the
  far northern portion of the county.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility and
  deep snow cover on roads within narrow bands of heavy snow. The
  hazardous conditions may impact the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4255 7820 4277 7813 4281 7818 4276 7855 
        4277 7895 4232 7975 4199 7973 4227 7925 4235 7906 
        4236 7852 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4242 7837 4267 7831 4266 7868 4258 7894 
        4255 7915 4227 7975 4201 7976 4201 7970 4217 7933 
        4215 7883 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ012-019-085-200745-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Southern Erie-
Including the cities of Warsaw, Jamestown, Orchard Park, 
and Springville
636 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 6 to 10 inches in the most persistent lake snows.

* WHERE...Wyoming, Chautauqua, and Southern Erie counties.
  Greatest accumulations across the Boston Hills, western Wyoming
  County, and northern and western Chautauqua County.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility and
  deep snow cover on roads within narrow bands of heavy snow. The
  hazardous conditions may impact the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4255 7820 4277 7813 4281 7818 4276 7855 
        4277 7895 4232 7975 4199 7973 4227 7925 4235 7906 
        4236 7852 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4242 7837 4267 7831 4266 7868 4258 7894 
        4255 7915 4227 7975 4201 7976 4201 7970 4217 7933 
        4215 7883 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ006>008-200745-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
636 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 5 to 9 inches in the most persistent lake snows.

* WHERE...The Eastern Lake Ontario Region. Greatest snowfall
  amounts on the Tug Hill and western foothills of the
  Adirondacks.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility and
  deep snow cover on roads within narrow bands of heavy snow. The
  hazardous conditions may impact the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4408 7515 4404 7531 4390 7548 4394 7584 
        4381 7611 4355 7613 4341 7583 4343 7556 4359 7545 
        4362 7512 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4360 7513 4371 7511 4367 7554 4368 7587 
        4362 7609 4352 7620 4347 7639 4340 7637 4340 7592 
        4345 7548 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

Hitchcock
450 
WWUS41 KBUF 200314
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1014 PM EST Tue Jan 19 2021

NYZ012-019-020-085-201115-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
1014 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations of
  5 to 9 inches in the most persistent lake snows.

* WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie
  counties. Greatest accumulations from the Boston Hills and
  western Wyoming County to the Chautauqua Ridge.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility 
  and deep snow cover on roads within narrow bands of heavy 
  snow. The hazardous conditions may impact the Wednesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4255 7820 4277 7813 4281 7818 4276 7855 
        4277 7895 4232 7975 4199 7973 4227 7925 4235 7906 
        4236 7852 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4242 7837 4267 7831 4266 7868 4258 7894 
        4255 7915 4227 7975 4201 7976 4201 7970 4217 7933 
        4215 7883 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ006>008-201115-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
1014 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 5 to 9 inches in the most persistent lake snows.

* WHERE...The Eastern Lake Ontario Region. Greatest snowfall 
  amounts on the Tug Hill and western foothills of the 
  Adirondacks.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility 
  and deep snow cover on roads within narrow bands of heavy 
  snow. The hazardous conditions may impact the Wednesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4408 7515 4404 7531 4390 7548 4394 7584 
        4381 7611 4355 7613 4341 7583 4343 7556 4359 7545 
        4362 7512 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4360 7513 4371 7511 4367 7554 4368 7587 
        4362 7609 4352 7620 4347 7639 4340 7637 4340 7592 
        4345 7548 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$

Hitchcock
258 
WWUS41 KBUF 200440
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1140 PM EST Tue Jan 19 2021

NYZ007-200545-
/O.CAN.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Jefferson-
Including the city of Watertown
1140 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING IS CANCELLED...

While additional snow showers will be possible overnight across
the NORTHERN portion of the Tug Hill...fresh accumulations will 
be negligible.

$$

NYZ012-019-020-085-201245-
/O.CON.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
1140 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 10 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 4 to 8 inches in the most persistent lake snows.

* WHERE...Wyoming, Chautauqua, Cattaraugus, and Southern Erie 
  counties.

* WHEN...Until 10 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility 
  and deep snow cover on untreated secondary roads, especially 
  across the higher terrain. The hazardous conditions will likely 
  impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If traveling, be prepared for rapidly changing road conditions 
and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4255 7820 4277 7813 4281 7818 4276 7855 
        4277 7895 4232 7975 4199 7973 4227 7925 4235 7906 
        4236 7852 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4242 7837 4267 7831 4266 7868 4258 7894 
        4255 7915 4227 7975 4201 7976 4201 7970 4217 7933 
        4215 7883 
TIME Y21M01D20T0600Z-Y21M01D20T1500Z

$$

NYZ006-008-201200-
/O.CON.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Lewis-
Including the cities of Oswego and Lowville
1140 PM EST Tue Jan 19 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 4 to 7 inches in the most persistent lake snows.

* WHERE...Oswego and Lewis counties. The greatest snowfall will be
  on the Tug Hill Plateau.

* WHEN...Until 7 AM EST Wednesday.

* IMPACTS...Travel will be very difficult with poor visibility and
  deep snow cover on roads within narrow bands of heavy snow. The
  hazardous conditions may impact the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy snow will fall in relatively narrow bands. If traveling, be
prepared for rapidly changing road conditions and visibilities.

Submit snow reports through our website or social media.

&&

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_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4408 7515 4404 7531 4390 7548 4394 7584 
        4381 7611 4355 7613 4341 7583 4343 7556 4359 7545 
        4362 7512 
TIME Y21M01D19T2100Z-Y21M01D20T0600Z
COORD...4360 7513 4371 7511 4367 7554 4368 7587 
        4362 7609 4352 7620 4347 7639 4340 7637 4340 7592 
        4345 7548 
TIME Y21M01D20T0600Z-Y21M01D20T1200Z

$$
111 
WWUS41 KBUF 201100
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
600 AM EST Wed Jan 20 2021

NYZ006-008-201200-
/O.CAN.KBUF.LE.W.0002.000000T0000Z-210120T1200Z/
Oswego-Lewis-
Including the cities of Oswego and Lowville
600 AM EST Wed Jan 20 2021

...LAKE EFFECT SNOW WARNING IS CANCELLED...

While lake effect snow showers will accumulate an additional inch
or two between 6 AM and 9 AM this morning, the significant lake
snows have ended. Many roadways remain snow covered and slick
though, so motorists should still use extra caution throughout the
morning.

$$

NYZ012-019-020-085-201200-
/O.CAN.KBUF.LE.W.0001.000000T0000Z-210120T1500Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
600 AM EST Wed Jan 20 2021

...LAKE EFFECT SNOW WARNING IS CANCELLED...

While lake effect snow showers will accumulate an additional inch
or two between 6 AM and 10 AM this morning, the significant lake
snows have ended. Many roadways remain snow covered and slick
though, so motorists should still use extra caution throughout the
morning.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 8:57 PM ESTSpecial Weather StatementBUFErie108 min
Jan 18, 3:25 AM ESTWinter Storm WatchBUFJefferson, Lewis10 hr
Jan 18, 3:25 AM ESTWinter Weather AdvisoryBUFAllegany, Cattaraugus, Erie, Genesee39 hr
Jan 18, 3:35 AM ESTSmall Craft AdvisoryBUF4 days

Nearby

Lake Effect Snow Warnings in New York, 2021Every lake effect snow warning in 2021

Sources

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