Alert archive / New York / Winter Weather Advisories in 2021

Winter Weather Advisory 23, NWS Buffalo, NY

November 25, 20217 counties in New York

NWS Buffalo, NY issued this winter weather advisory at Nov 25, 2021, 2:41 PM EST for 7 counties in New York. It took effect at Nov 26, 2021, 4:00 AM EST. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Nov 25, 2021, 2:41 PM EST (19:41 UTC)
In effect from
Nov 26, 2021, 4:00 AM EST
Expired
Nov 27, 2021, 3:40 AM EST
In force
24 hr
Issued by
NWS Buffalo, NY

Counties Cattaraugus County, NY, Cayuga County, NY, Erie County, NY, Jefferson County, NY, Lewis County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 121 km from the middle of the area, began a volume at 19:39 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, 7.7 hours before the alert went out and 144 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 2021-11-25Temperature 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, Buffalo Intl Airport, NY at 12:00Z on 2021-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.1939587897Sfc1 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
687 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
303 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

159 
WWUS41 KBUF 251941
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
241 PM EST Thu Nov 25 2021

NYZ019-260345-
/O.UPG.KBUF.WS.A.0008.211126T0600Z-211127T1200Z/
/O.NEW.KBUF.LE.W.0010.211126T0600Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
241 PM EST Thu Nov 25 2021

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 1 AM FRIDAY TO 7 AM
EST SATURDAY...

* WHAT...Heavy lake effect snow and blowing snow expected. Total 
  snow accumulations of 6 to 11 inches in the most persistent lake 
  snows. The greatest totals will be along the Chautauqua Ridge. 
  Winds gusting as high as 40 mph.

* WHERE...Chautauqua county.

* WHEN...From 1 AM Friday to 7 AM EST Saturday.

* 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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4224 7908 4250 7906 4239 7931 4232 7956 
        4223 7976 4199 7977 4202 7956 4209 7937 4219 7926 
        4218 7915 
TIME Y21M11D26T0600Z-Y21M11D26T1200Z
COORD...4226 7908 4250 7906 4249 7922 4242 7941 
        4232 7956 4225 7976 4199 7977 4202 7931 4207 7914 
        4215 7906 
TIME Y21M11D26T1200Z-Y21M11D27T0000Z
COORD...4226 7909 4248 7906 4243 7931 4236 7947 
        4226 7955 4217 7977 4199 7977 4200 7965 4216 7939 
        4218 7920 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-085-260345-
/O.NEW.KBUF.WW.Y.0023.211126T0900Z-211127T1200Z/
Cattaraugus-Southern Erie-
Including the cities of Olean, Orchard Park, and Springville
241 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 7 AM EST
SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow
  accumulations of 5 to 9 inches. Localized higher totals are
  possible. The greatest totals will occur over the higher
  terrain. Winds gusting as high as 40 mph.

* WHERE...Cattaraugus and Southern Erie counties.

* WHEN...From 4 AM Friday to 7 AM EST Saturday.

* 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.

&&

$$

NYZ006>008-260345-
/O.NEW.KBUF.WW.Y.0023.211126T0900Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
241 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 10 AM
EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow
  accumulations of 5 to 10 inches. Localized higher totals are
  possible. The greatest totals expected on the Tug Hill Plateau.
  Winds gusting as high as 35 mph.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 4 AM Friday to 10 AM EST Saturday.

* 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.

&&

$$

NYZ004-005-260345-
/O.NEW.KBUF.WW.Y.0023.211126T1500Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
241 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 10 AM
EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 3 to 6 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph.

* WHERE...Wayne and Northern Cayuga counties.

* WHEN...From 10 AM Friday to 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. 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.

&&

$$

TMA
7 follow-up statements
676 
WWUS41 KBUF 260144
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
844 PM EST Thu Nov 25 2021

NYZ019-261000-
/O.CON.KBUF.LE.W.0010.211126T0600Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
844 PM EST Thu Nov 25 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 1 AM FRIDAY TO
7 AM EST SATURDAY...

* WHAT...Heavy lake effect snow and blowing snow expected. Total 
  snow accumulations of 6 to 11 inches in the most persistent 
  lake snows. The greatest totals will be along the Chautauqua 
  Ridge. Winds gusting as high as 40 mph.

* WHERE...Chautauqua county.

* WHEN...From 1 AM Friday to 7 AM EST Saturday.

* 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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4224 7908 4250 7906 4239 7931 4232 7956 
        4223 7976 4199 7977 4202 7956 4209 7937 4219 7926 
        4218 7915 
TIME Y21M11D26T0600Z-Y21M11D26T1200Z
COORD...4226 7908 4250 7906 4249 7922 4242 7941 
        4232 7956 4225 7976 4199 7977 4202 7931 4207 7914 
        4215 7906 
TIME Y21M11D26T1200Z-Y21M11D27T0000Z
COORD...4226 7909 4248 7906 4243 7931 4236 7947 
        4226 7955 4217 7977 4199 7977 4200 7965 4216 7939 
        4218 7920 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-085-261000-
/O.CON.KBUF.WW.Y.0023.211126T0900Z-211127T1200Z/
Cattaraugus-Southern Erie-
Including the cities of Olean, Orchard Park, and Springville
844 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM FRIDAY TO
7 AM EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 5 to 9 inches. Localized higher totals are 
  possible. The greatest totals will occur over the higher 
  terrain. Winds gusting as high as 40 mph.

* WHERE...Cattaraugus and Southern Erie counties.

* WHEN...From 4 AM Friday to 7 AM EST Saturday.

* 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.

&&

$$

NYZ006>008-261000-
/O.CON.KBUF.WW.Y.0023.211126T0900Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
844 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM FRIDAY TO
10 AM EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 5 to 10 inches. Localized higher totals are 
  possible. The greatest totals expected on the Tug Hill 
  Plateau. Winds gusting as high as 35 mph.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 4 AM Friday to 10 AM EST Saturday.

* 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.

&&

$$

NYZ004-005-261000-
/O.CON.KBUF.WW.Y.0023.211126T1500Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
844 PM EST Thu Nov 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM FRIDAY TO
10 AM EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 3 to 6 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph.

* WHERE...Wayne and Northern Cayuga counties.

* WHEN...From 10 AM Friday to 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. 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.

&&

$$

Apffel
173 
WWUS41 KBUF 260627
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
127 AM EST Fri Nov 26 2021

NYZ019-261430-
/O.CON.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
127 AM EST Fri Nov 26 2021

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

* WHAT...Heavy lake effect snow and blowing snow expected. Total 
  snow accumulations of 6 to 11 inches in the most persistent 
  lake snows. The greatest totals will be along the Chautauqua 
  Ridge. Winds gusting as high as 40 mph.

* WHERE...Chautauqua county.

* WHEN...From 1 AM Friday to 7 AM EST Saturday.

* IMPACTS...Travel could be difficult. Areas of blowing snow will 
  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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4224 7908 4250 7906 4239 7931 4232 7956 
        4223 7976 4199 7977 4202 7956 4209 7937 4219 7926 
        4218 7915 
TIME Y21M11D26T0600Z-Y21M11D26T1200Z
COORD...4226 7908 4250 7906 4249 7922 4242 7941 
        4232 7956 4225 7976 4199 7977 4202 7931 4207 7914 
        4215 7906 
TIME Y21M11D26T1200Z-Y21M11D27T0000Z
COORD...4226 7909 4248 7906 4243 7931 4236 7947 
        4226 7955 4217 7977 4199 7977 4200 7965 4216 7939 
        4218 7920 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-085-261430-
/O.CON.KBUF.WW.Y.0023.211126T0900Z-211127T1200Z/
Cattaraugus-Southern Erie-
Including the cities of Olean, Orchard Park, and Springville
127 AM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 5 to 9 inches. Localized higher totals are 
  possible. The greatest totals will occur over the higher 
  terrain. Winds gusting as high as 40 mph.

* WHERE...Cattaraugus and Southern Erie counties.

* WHEN...From 4 AM Friday to 7 AM EST Saturday.

* IMPACTS...Travel could be difficult, especially across the
  higher terrain. Areas of blowing snow will 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.

&&

$$

NYZ006>008-261430-
/O.CON.KBUF.WW.Y.0023.211126T0900Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
127 AM EST Fri Nov 26 2021

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

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 5 to 10 inches. Localized higher totals are 
  possible. The greatest totals expected on the Tug Hill 
  Plateau. Winds gusting as high as 35 mph.

* WHERE...The Eastern Lake Ontario Region.

* WHEN...From 4 AM Friday to 10 AM EST Saturday.

* IMPACTS...Travel could be 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.

&&

$$

NYZ004-005-261430-
/O.CON.KBUF.WW.Y.0023.211126T1500Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
127 AM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 10 AM EST SATURDAY...

* WHAT...Lake effect snow and blowing snow expected. Total snow 
  accumulations of 3 to 6 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph.

* WHERE...Wayne and Northern Cayuga counties.

* WHEN...From 10 AM Friday to 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing 
  snow could significantly reduce visibility. 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.

&&

$$
760 
WWUS41 KBUF 261000
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
500 AM EST Fri Nov 26 2021

NYZ019-261800-
/O.CON.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
500 AM EST Fri Nov 26 2021

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

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 6 to 11 inches in the most persistent lake snows. Winds 
  gusting as high as 40 mph.

* WHERE...Chautauqua county.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Travel could be difficult. Areas of blowing snow will
  significantly reduce visibility. The hazardous conditions could
  impact the morning and especially evening 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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4224 7908 4250 7906 4239 7931 4232 7956 
        4223 7976 4199 7977 4202 7956 4209 7937 4219 7926 
        4218 7915 
TIME Y21M11D26T0600Z-Y21M11D26T1200Z
COORD...4226 7908 4250 7906 4249 7922 4242 7941 
        4232 7956 4225 7976 4199 7977 4202 7931 4207 7914 
        4215 7906 
TIME Y21M11D26T1200Z-Y21M11D27T0000Z
COORD...4226 7909 4248 7906 4243 7931 4236 7947 
        4226 7955 4217 7977 4199 7977 4200 7965 4216 7939 
        4218 7920 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-085-261800-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Cattaraugus-Southern Erie-
Including the cities of Olean, Orchard Park, and Springville
500 AM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Lake effect snow. Snow accumulations of 5 to 9 inches in
  the most persistent lake snows. Winds gusting as high as 40 mph.

* WHERE...Cattaraugus and Southern Erie counties.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. Travel could be
  difficult across the elevated terrain. The hazardous conditions
  could impact the morning and especially evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Submit snow reports through our website or social media.

&&

$$

NYZ006>008-261800-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
500 AM EST Fri Nov 26 2021

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

* WHAT...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...The Eastern Lake Ontario Region.

* WHEN...Until 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. Travel could be
  difficult across the Tug Hill plateau. The hazardous conditions
  could 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.

&&

$$

NYZ004-005-261800-
/O.CON.KBUF.WW.Y.0023.211126T1500Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
500 AM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 10 AM EST SATURDAY...

* WHAT...Lake effect snow expected. Total snow accumulations of 
  3 to 6 inches in the most persistent lake snows. Winds gusting 
  as high as 40 mph.

* WHERE...Wayne and Northern Cayuga counties.

* WHEN...From 10 AM this morning to 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. 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.

&&

$$
850 
WWUS41 KBUF 261741
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1241 PM EST Fri Nov 26 2021

NYZ019-270145-
/O.CON.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
1241 PM EST Fri Nov 26 2021

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

* WHAT...Heavy lake effect snow and blowing snow. Additional snow
  accumulations of 4 to 8 inches in the most persistent lake
  snows. Winds gusting as high as 40 mph will produce blowing and
  drifting snow in open areas.

* WHERE...Chautauqua county. The greatest snowfall will be found
  along the Chautauqua Ridge.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Travel will be very difficult at times. Expect snow
  covered roads and poor visibility in lake snows. The hazardous
  conditions will impact the Friday 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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4239 7908 4247 7919 4241 7934 4225 7976 
        4199 7977 4201 7947 4199 7929 4207 7919 4214 7918 
        4215 7912 
TIME Y21M11D26T1500Z-Y21M11D27T0000Z
COORD...4242 7914 4242 7941 4234 7954 4230 7954 
        4223 7976 4199 7977 4201 7947 4200 7931 4204 7931 
        4213 7912 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-085-270145-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Cattaraugus-Southern Erie-
Including the cities of Olean, Orchard Park, and Springville
1241 PM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Lake effect snow and blowing snow. Additional snow 
  accumulations of 3 to 5 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph will produce blowing and 
  drifting snow in open areas.

* WHERE...Cattaraugus and Southern Erie counties. The greatest
  snow amounts will be across the higher terrain of northern and
  western Cattaraugus County and far southern Erie County.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Plan on snow covered and slippery road conditions with
  poor visibility at times. The hazardous conditions will impact 
  the Friday 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.

&&

$$

NYZ006>008-270145-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
1241 PM EST Fri Nov 26 2021

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

* WHAT...Lake effect snow and blowing snow. Additional snow
  accumulations of 3 to 6 inches in the most persistent lake
  snows. Winds gusting as high as 35 mph will produce blowing and
  drifting snow in open areas.

* WHERE...The Eastern Lake Ontario Region. The greatest snow
  accumulations will be across the higher terrain of the Tug Hill
  Plateau and western foothills of the Adirondacks.

* WHEN...Until 10 AM EST Saturday.

* IMPACTS...Plan on snow covered and slippery road conditions with
  reduced visibility at times. The hazardous conditions will 
  impact the Friday 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.

&&

$$

NYZ004-005-270145-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
1241 PM EST Fri Nov 26 2021

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

* WHAT...Lake effect snow and blowing snow. Additional snow
  accumulations of 2 to 4 inches in the most persistent lake
  snows. Winds gusting as high as 40 mph will produce blowing and
  drifting snow in open areas.

* WHERE...Wayne and Northern Cayuga counties. The greatest snow
  amounts are expected across eastern Wayne and northern Cayuga
  counties.

* WHEN...Until 10 AM EST Saturday.

* IMPACTS...Plan on snow covered and slippery road conditions with
  reduced visibility at times. The hazardous conditions could 
  impact the Friday 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.

&&

$$

Hitchcock
518 
WWUS41 KBUF 262316
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
616 PM EST Fri Nov 26 2021

NYZ085-270030-
/O.CAN.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Southern Erie-
Including the cities of Orchard Park and Springville
616 PM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Steady snow has ended. Additional accumulation of an inch or less
tonight.

$$

NYZ019-270730-
/O.CON.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
616 PM EST Fri Nov 26 2021

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

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of 2 to 4 inches in the most persistent lake snows. Winds 
  gusting as high as 35 mph.

* WHERE...Chautauqua county.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. 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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4239 7908 4247 7919 4241 7934 4225 7976 
        4199 7977 4201 7947 4199 7929 4207 7919 4214 7918 
        4215 7912 
TIME Y21M11D26T1500Z-Y21M11D27T0000Z
COORD...4242 7914 4242 7941 4234 7954 4230 7954 
        4223 7976 4199 7977 4201 7947 4200 7931 4204 7931 
        4213 7912 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-270730-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Cattaraugus-
Including the city of Olean
616 PM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

* WHAT...Lake effect snow. Additional snow accumulations of 1 to 
  3 inches in the most persistent lake snows.

* WHERE...Cattaraugus county.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. 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.

&&

$$

NYZ006>008-270730-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
616 PM EST Fri Nov 26 2021

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

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

* WHERE...The Eastern Lake Ontario Region.

* WHEN...Until 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. 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.

&&

$$

NYZ004-005-270730-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Wayne-Northern Cayuga-
Including the cities of Newark and Fair Haven
616 PM EST Fri Nov 26 2021

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

* WHAT...Lake effect snow. Additional snow accumulations of 1 to 
  3 inches in the most persistent lake snows. Winds gusting as 
  high as 40 mph.

* WHERE...Wayne and Northern Cayuga counties.

* WHEN...Until 10 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions. 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.

&&

$$

Apffel
181 
WWUS41 KBUF 270218
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
918 PM EST Fri Nov 26 2021

NYZ004-270330-
/O.CAN.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Wayne-
Including the city of Newark
918 PM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Additional snowfall of an inch or less expected overnight.

$$

NYZ019-271030-
/O.CON.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
918 PM EST Fri Nov 26 2021

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

* WHAT...Heavy lake effect snow. Additional snow accumulations 
  of up to 2 inches in the most persistent lake snows. Winds 
  gusting as high as 35 mph.

* WHERE...Chautauqua county.

* WHEN...Until 7 AM EST Saturday.

* IMPACTS...Plan on slippery road conditions.

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
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4239 7908 4247 7919 4241 7934 4225 7976 
        4199 7977 4201 7947 4199 7929 4207 7919 4214 7918 
        4215 7912 
TIME Y21M11D26T1500Z-Y21M11D27T0000Z
COORD...4242 7914 4242 7941 4234 7954 4230 7954 
        4223 7976 4199 7977 4201 7947 4200 7931 4204 7931 
        4213 7912 
TIME Y21M11D27T0000Z-Y21M11D27T1200Z

$$

NYZ020-271030-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Cattaraugus-
Including the city of Olean
918 PM EST Fri Nov 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
SATURDAY...

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

* WHERE...Cattaraugus county.

* WHEN...Until 7 AM EST Saturday.

* 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.

&&

$$

NYZ006>008-271030-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Oswego-Jefferson-Lewis-
Including the cities of Oswego, Watertown, and Lowville
918 PM EST Fri Nov 26 2021

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

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

* WHERE...The Eastern Lake Ontario Region.

* WHEN...Until 10 AM EST Saturday.

* 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.

&&

$$

NYZ005-271030-
/O.CON.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Northern Cayuga-
Including the city of Fair Haven
918 PM EST Fri Nov 26 2021

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

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

* WHERE...Northern Cayuga county.

* WHEN...Until 10 AM EST Saturday.

* 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
599 
WWUS41 KBUF 270840
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
340 AM EST Sat Nov 27 2021

NYZ019-270945-
/O.CAN.KBUF.LE.W.0010.000000T0000Z-211127T1200Z/
Chautauqua-
Including the city of Jamestown
340 AM EST Sat Nov 27 2021

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

The threat for significant lake snows has ended. There will still
be areas of light snow though that could accumulate a fresh inch 
or so through midday today. 

Motorists are encouraged to still use extra caution through the 
morning hours...as some untreated roadways remain slick and snow 
covered...especially across the higher terrain. 

$$

NYZ005>008-270945-
/O.CAN.KBUF.WW.Y.0023.000000T0000Z-211127T1500Z/
Northern Cayuga-Oswego-Jefferson-Lewis-
Including the cities of Fair Haven, Oswego, Watertown, 
and Lowville
340 AM EST Sat Nov 27 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

While the significant lake snows have ended...light snow showers
could still leave a fresh coating to as much as an inch of fresh
snow in spots through early this afternoon.

Motorists are encouraged to still use extra caution through the 
morning hours...as some untreated roadways remain slick and snow 
covered.

$$

NYZ020-270945-
/O.CAN.KBUF.WW.Y.0023.000000T0000Z-211127T1200Z/
Cattaraugus-
Including the city of Olean
340 AM EST Sat Nov 27 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

While the significant lake snows have ended...light snow showers
could still leave a fresh coating to as much as an inch of fresh
snow in spots through midday today.

Motorists are encouraged to still use extra caution through the 
morning hours...as some untreated roadways remain slick and snow 
covered..especially across the higher terrain. 

$$

What forecasters said that day

The local office's own words before this winter weather 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 winter weather advisory went out at Nov 25, 1:41 PM EST, 1 hour earlier.

Area forecast discussion, Nov 25, 1:41 PM EST, 1 hour before
Area Forecast Discussion
National Weather Service Buffalo NY
141 PM EST Thu Nov 25 2021

.SYNOPSIS...
Cloudy skies with light rain showers expected this afternoon and
evening ahead of an approaching cold front. Rain showers change to
snow overnight as the cold front sweeps across the area. Colder air
behind the front will bring widespread snow showers and windy
conditions into Friday, with accumulating lake effect snow east and
southeast off both lakes which will last into Saturday.

&&

.NEAR TERM /THROUGH TONIGHT/...
Weak sfc low will advance east passing by just to our north this
evening and tonight. As this occurs, a band of very light
precipitation (showers) will advance into and across Western NY just
ahead of the cold front. All precipitation will be in the
liquid form until the cold front moves through tonight. Once
this band of light precipitation works through this afternoon
there likely will be a brief lull in the precipitation as the
dry slot work into and across the Lower Lakes. Otherwise,
rainfall amounts will likely remain on the light side with less
than a tenth of an inch anticipated.

Tonight, expect the cold front to enter Western NY around midnight
with a much colder air mass spilling in across the Lower Lakes
sending H850 temps down to -8C/-9C which will then encouraging
a lake response. Look for precipitation to change over to snow
beginning first across the higher terrain with 1 to 2 inches of
accumulation possible across the interior sections of the
western Southern Tier and the Tug Hill/western Dacks. Might even
see a few isolated spots hit 3 inches just before daybreak.
Expect a mix of rain and snow across the lower elevations before
the change over to all snow. Winds will also ramp up behind the
front with WNW'erly winds gusting up to 30 to 35 mph which may
create areas of blowing snow in the locations mentioned above.

In terms of temperatures, look for lows to fall back into the mid
20s to lower 30s across the area just before daybreak.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
...Accumulating lake snows for northwest flow areas Friday into
Saturday morning...

The passage of a sharp mid level trough Friday will generate a well
aligned 290-300 flow of -10 to -12c H85 air that will be more than
cold enough to support significant instability over the 10c lakes.
The resulting deep cyclonic flow will include a lake induced
equilibrium level over 10kft...particularly over Lake Erie where a
solid 5kft deep snow dendritic growth zone (DGZ) will be in place.
An upstream connection to Lake Huron is also expected for the LES
off Lk Erie...so the airmass will be more primed than that for Lk
Ontario. The orthogonal flow to the Chautauqua ridge will also help
to enhance local lift so that significant 24-30 hr snowfall accums
of a foot or so will be possible. Given -10c hgts of 4-6kft and the
+10kft...lake induced thundersnow cannot be ruled out...but will
hold off with inserting into grids until a connection becomes more
evident. A winter storm watch has thus been issued for Chautauqua
county where the upstream connection is being targeted.

Winter weather advisories will be likely for late tonight into
Saturday morning for southern Erie and Cattaraugus counties...as
well as for sites east-southeast of Lake Ontario.

For the remainder of western New York...Friday will feature gusty
winds of 30-40 mph that will generate wind chill temps in the teens
and lower 20s that will be accompanied by some snow showers that
could accumulate up to an inch or two. A 40kt low level jet that
will be responsible for the gusty winds could produce similar wind
gusts across the higher terrain...mainly in the Finger Lakes
region...so its not out of the question that a wind advisory could
be issued for that area in a later package.

As the sfc pressure gradient relaxes and the aforementioned LL jet
exits the region Friday night...wind speeds at the sfc will slowly
drop off. The coverage for the lake snow showers will start to
diminish...although accumulating snows will persist southeast of
both lakes.

As a sfc based ridge moves across the region on Saturday...a
lowering cap and shrinking DGZ will encourage lake snows to continue
to diminish in intensity and coverage with only minimal additional
snow accums. Outside of the lake snow showers...partly sunny weather
should return. It will remain chilly through with temps remaining
firmly below normal in the low to mid 30s.

Light snow will overspread at least the western counties Saturday
night ahead of the next synoptic system.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
Sunday through Monday the guidance suite is coming into better
agreement on dropping a fairly potent shortwave through the backside
of the mean upper level trough across our region...with this feature
eventually carving out a small closed low over New York State and/or
New England by Monday...while also helping to deepen the larger-
scale upper level trough. Meanwhile at the surface...an attendant
elongated surface wave will slide over or just south of our region
on Sunday...before redeveloping off the New England coastline on
Monday.

The above developments will result in a good chance for a general
light snowfall developing across our area Sunday into Sunday night.
PoPs have thus been raised substantially from continuity to account
for this...and can foresee a need to raise these even further in
later packages should current model trends persist. As the surface
low redevelops off the New England coastline later Sunday night and
Monday...a cyclonic northwesterly flow of colder air will develop
across our region and lead to the development of areas of lake
effect snow to the southeast of both lakes...along with a few more
synoptic snow showers elsewhere.

After that the guidance diverges considerably on the evolution of
the main synoptic features as we head through Tuesday and Wednesday.
This being said though...the overall cyclonic flow and seasonably
cold temperatures aloft should continue to favor a continued
potential for some nuisance lake snows southeast of the lakes
through Tuesday...with this gradually lowering by midweek as surface-
based ridging and milder air aloft begins to impinge upon the area.

As for temperatures...expect these to average out solidly below
normal through the period...with daily highs running mostly in the
30s...and nightly lows largely ranging through the 20s.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/... VFR/MVFR CIGS will
deteriorate through the remainder of the day with IFR developing
across Western NY by late this afternoon/early evening, first
over the higher terrain of the western Southern Tier, followed
by the Niagara Frontier.

Widespread IFR/MVFR conditions this evening will become IFR at all
terminals, with areas of LIFR for the overnight. Rain showers will
transition to snow showers during the second half of tonight, with
westerly winds gusting as high as 20-25 knots by later tonight.

Outlook...

Friday and Saturday...Areas of MVFR/IFR in lake effect snow showers.
Sunday and Tuesday...Mainly VFR. A chance of rain or snow
showers.

&&

.MARINE...
Winds will picks up ahead of a cold front today enough to warrant a
round of Small Craft Advisories by tonight. High end advisory
conditions then will develop behind the passage of a cold front on
Friday and into the first half of the weekend as a west northwest
flow develops. Gale force winds gusts are possible during this time
as well. Hence, Small Craft Advisories have been hoisted for all
nearshore zones, with the exception of the Upper Niagara River and
Buffalo Harbor. General timing for the SCAs range from early this
evening through Saturday morning for Lake Erie, and from late this
evening through the first half of Saturday night for Lake Ontario.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...Winter Weather Advisory from 4 AM Friday to 7 AM EST Saturday
     for NYZ006>008-020-085.
     Winter Weather Advisory from 10 AM Friday to 7 AM EST Saturday
     for NYZ004-005.
     Lake Effect Snow Warning from 4 AM Friday to 7 AM EST Saturday
     for NYZ019.
     Winter Storm Watch from 1 AM EST Friday through late tonight
     for NYZ019.
MARINE...Small Craft Advisory from 7 PM this evening to 10 AM EST
         Saturday for LEZ040-041.
         Small Craft Advisory from 1 AM Friday to 7 AM EST
         Saturday for LOZ030.
         Small Craft Advisory from 10 PM this evening to 1 AM EST
         Sunday for LOZ043-044.
         Small Craft Advisory from 10 PM this evening to 10 PM EST
         Saturday for LOZ042.
         Small Craft Advisory from 1 AM Friday to 1 AM EST Sunday
         for LOZ045.

&&

SYNOPSIS...AR/JM
NEAR TERM...AR
SHORT TERM...RSH
LONG TERM...JJR
AVIATION...AR
MARINE...AR/JM
Hazardous weather outlook, Nov 25, 5:21 AM EST, 9 hours 20 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
521 AM EST Thu Nov 25 2021

NYZ001>003-010-011-013-014-021-261030-
Niagara-Orleans-Monroe-Northern Erie-Genesee-Livingston-Ontario-
Allegany-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...Today and tonight.

No hazardous weather is anticipated at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Snow showers could accumulate one to three inches late tonight
through Saturday morning. This could produce slick conditions for
travelers. The snow showers on Friday will be accompanied by wind
gusts as high as 40 mph.

.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

NYZ019-261030-
Chautauqua-
521 AM EST Thu Nov 25 2021

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
MORNING...

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.

   Winter Storm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Storm Watch.

.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

NYZ012-020-085-261030-
Wyoming-Cattaraugus-Southern Erie-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...Today and tonight.

No hazardous weather is anticipated at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Several inches of lake effect snow will be possible late tonight
night into Saturday morning. Winds gusting as high as 40 mph may
result in areas of blowing snow at times. Anyone with travel plans
during this timeframe should monitor the latest forecast.

.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

NYZ004-005-261030-
Wayne-Northern Cayuga-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of western and north
central New York.

.DAY ONE...Today and tonight.

No hazardous weather is anticipated at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Several inches of lake effect snow will be possible Friday into
Saturday. Winds gusting as high to 35 mph may result in areas of
blowing snow at times. Anyone with travel plans during this timeframe
should monitor the latest forecast.

No hazardous weather is expected at this time.

.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

NYZ006>008-261030-
Oswego-Jefferson-Lewis-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...Today and tonight.

No hazardous weather is anticipated at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Several inches of lake effect snow will be possible on the Tug Hill
Friday into Saturday morning. Gusty winds will also result in some
blowing snow. Winds gusting to 30 mph may result in areas of blowing
snow at times. Anyone with travel plans during this timeframe should
monitor the latest forecast.

No hazardous weather is expected at this time.

.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

LEZ020-040-041-LOZ030-261030-
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-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of Lake Erie and Lake
Ontario.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.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

LOZ042>045-062>065-261030-
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-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.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

SLZ022-024-261030-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
521 AM EST Thu Nov 25 2021

This Hazardous Weather Outlook is for the New York waters of the
Saint Lawrence River.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.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

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 25, 4:14 AM ESTWinter Storm WatchBUFChautauqua10 hr
Nov 25, 6:49 AM ESTSmall Craft AdvisoryBUF63 hr
Nov 25, 2:41 PM ESTLake Effect Snow WarningBUFChautauqua37 hr

Nearby

Winter Weather Advisories in New York, 2021Every winter weather advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.