Alert archive / New York / Winter Storm Watches in 2021

Winter Storm Watch 3, NWS Buffalo, NY

February 3, 20215 counties in New York

NWS Buffalo, NY issued this winter storm watch at Feb 3, 2021, 2:38 PM EST for 5 counties in New York. It took effect at Feb 5, 2021, 4:00 PM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 3, 2021, 2:38 PM EST (19:38 UTC)
In effect from
Feb 5, 2021, 4:00 PM EST
Expired
Feb 5, 2021, 10:52 AM EST
In force
Issued by
NWS Buffalo, NY

Counties Erie County, NY, Genesee County, NY, Jefferson County, NY, Lewis County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 118 km from the middle of the area, began a volume at 19:37 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, 7.6 hours before the alert went out and 116 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 2021-02-03Temperature 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 2021-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 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
782 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

412 
WWUS41 KBUF 031938
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
238 PM EST Wed Feb 3 2021

NYZ010>012-085-040345-
/O.NEW.KBUF.WS.A.0003.210205T2100Z-210207T0600Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
238 PM EST Wed Feb 3 2021

...WINTER STORM WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow accumulations
  of 9 inches or more in the most persistent lake snows. Winds
  during the heaviest lake effect snow Friday night into Saturday
  could gust as high as 45 mph resulting in considerable blowing
  and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From Friday afternoon through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

NYZ007-008-040345-
/O.NEW.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
238 PM EST Wed Feb 3 2021

...WINTER STORM WATCH IN EFFECT FROM FRIDAY EVENING THROUGH LATE
SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow accumulations of
  9 inches or more are possible in the most persistent lake 
  snows. Winds could gust as high as 40 mph resulting in 
  considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. Heaviest snow in Lewis
  county will be mainly north of Lowville.

* WHEN...From Friday evening through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

JLA
8 follow-up statements
662 
WWUS41 KBUF 040327
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1027 PM EST Wed Feb 3 2021

NYZ010>012-085-041130-
/O.CON.KBUF.WS.A.0003.210205T2100Z-210207T0600Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
1027 PM EST Wed Feb 3 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more in the most persistent lake 
  snows. Winds during the heaviest lake effect snow Friday night 
  into Saturday could gust as high as 45 mph resulting in 
  considerable blowing and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From Friday afternoon through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

NYZ007-008-041130-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1027 PM EST Wed Feb 3 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more are possible in the most 
  persistent lake snows. Winds could gust as high as 40 mph 
  resulting in considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. Heaviest snow in Lewis 
  county will be mainly north of Lowville.

* WHEN...From Friday evening through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$
809 
WWUS41 KBUF 040828
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
328 AM EST Thu Feb 4 2021

NYZ010>012-085-041630-
/O.CON.KBUF.WS.A.0003.210205T2100Z-210207T0600Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
328 AM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more in the most persistent lake 
  snows. Winds during the heaviest lake effect snow Friday night 
  into Saturday could gust as high as 45 mph resulting in 
  considerable blowing and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From Friday afternoon through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

NYZ007-008-041630-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
328 AM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more are possible in the most 
  persistent lake snows. Winds could gust as high as 40 mph 
  resulting in considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. Heaviest snow in Lewis 
  county will be mainly north of Lowville.

* WHEN...From Friday evening through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

EAJ
116 
WWUS41 KBUF 041520
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1020 AM EST Thu Feb 4 2021

NYZ010>012-085-042330-
/O.CON.KBUF.WS.A.0003.210205T2100Z-210207T0600Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
1020 AM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more in the most persistent lake 
  snows. Winds during the heaviest lake effect snow Friday night 
  into Saturday could gust as high as 45 mph resulting in 
  considerable blowing and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From Friday afternoon through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$

NYZ007-008-042330-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1020 AM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more are possible in the most 
  persistent lake snows. Winds could gust as high as 40 mph 
  resulting in considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties.

* WHEN...From Friday evening through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$
Reynolds
445 
WWUS41 KBUF 041924
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
224 PM EST Thu Feb 4 2021

NYZ010>012-085-050330-
/O.UPG.KBUF.WS.A.0003.210205T2100Z-210207T0600Z/
/O.NEW.KBUF.LE.W.0006.210205T2100Z-210207T0300Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
224 PM EST Thu Feb 4 2021

...LAKE EFFECT SNOW WARNING IN EFFECT FROM 4 PM FRIDAY TO 10 PM
EST SATURDAY...

* WHAT...Heavy lake effect snow expected. Total snow accumulations
  of 9 to 16 inches in the most persistent lake snows. Winds 
  gusting as high as 40 mph will result in considerable blowing 
  and drifting snow. 

* WHERE...Erie, Genesee, and Wyoming counties.

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

* IMPACTS...Travel could be very difficult to impossible. Areas of
  blowing snow could significantly reduce visibility. The
  hazardous conditions could 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
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...4307 7859 4314 7845 4321 7847 4322 7859 
        4313 7876 4304 7904 4298 7902 4288 7889 4283 7889 
        4294 7864 
TIME Y21M02D05T2100Z-Y21M02D06T0600Z
COORD...4301 7812 4306 7829 4305 7856 4295 7895 
        4286 7889 4277 7895 4258 7929 4264 7887 4275 7840 
        4282 7823 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4289 7831 4300 7830 4303 7834 4302 7853 
        4298 7878 4292 7891 4281 7890 4273 7900 4274 7879 
        4285 7838 
TIME Y21M02D06T1800Z-Y21M02D07T0300Z

$$

NYZ001-002-050330-
/O.NEW.KBUF.WW.Y.0010.210205T2100Z-210207T0300Z/
Niagara-Orleans-
Including the cities of Niagara Falls and Medina
224 PM EST Thu Feb 4 2021

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

* WHAT...Lake effect snow expected. Total snow accumulations of 5
  to 8 inches in the most persistent lake snows. Winds gusting as
  high as 40 mph will result in considerable blowing and drifting
  snow. Most of the snow will occur on Friday evening before the 
  main band of snow moves mainly south of the area.

* WHERE...Niagara and Orleans counties.

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

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

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.

&&

$$

NYZ007-008-050330-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
224 PM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow accumulations
  of 9 inches or more possible in the most persistent lake snows.
  Winds could gust as high as 40 mph resulting in considerable
  blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. The heaviest snow over
  Lewis county will occur north of Lowville. 

* WHEN...From Friday evening through late Saturday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$
JLA
964 
WWUS41 KBUF 042352
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
652 PM EST Thu Feb 4 2021

NYZ010>012-085-050800-
/O.CON.KBUF.LE.W.0006.210205T2100Z-210207T0300Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
652 PM EST Thu Feb 4 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 4 PM FRIDAY TO
10 PM EST SATURDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 9 to 16 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph will result in 
  considerable blowing and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

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

* IMPACTS...Travel will be very difficult. Areas of blowing snow 
  will significantly reduce visibility. The hazardous conditions 
  could 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
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...4307 7859 4314 7845 4321 7847 4322 7859 
        4313 7876 4304 7904 4298 7902 4288 7889 4283 7889 
        4294 7864 
TIME Y21M02D05T2100Z-Y21M02D06T0600Z
COORD...4301 7812 4306 7829 4305 7856 4295 7895 
        4286 7889 4277 7895 4258 7929 4264 7887 4275 7840 
        4282 7823 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4289 7831 4300 7830 4303 7834 4302 7853 
        4298 7878 4292 7891 4281 7890 4273 7900 4274 7879 
        4285 7838 
TIME Y21M02D06T1800Z-Y21M02D07T0300Z

$$

NYZ001-002-050800-
/O.CON.KBUF.WW.Y.0010.210205T2100Z-210207T0300Z/
Niagara-Orleans-
Including the cities of Niagara Falls and Medina
652 PM EST Thu Feb 4 2021

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

* WHAT...Lake effect snow expected. Total snow accumulations of 
  5 to 8 inches in the most persistent lake snows. Winds gusting 
  as high as 40 mph will result in considerable blowing and 
  drifting snow. Most of the snow will occur on Friday evening 
  before the main band of snow moves mainly south of the area.

* WHERE...Niagara and Orleans counties.

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

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

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.

&&

$$

NYZ007-008-050800-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
652 PM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more possible in the most 
  persistent lake snows. Winds could gust as high as 40 mph 
  resulting in considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. The heaviest snow over 
  Lewis county will occur north of Lowville.

* WHEN...From Friday evening through late Saturday night.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  will significantly reduce visibility. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$
409 
WWUS41 KBUF 050340
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1040 PM EST Thu Feb 4 2021

NYZ010>012-085-051200-
/O.CON.KBUF.LE.W.0006.210205T2100Z-210207T0300Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
1040 PM EST Thu Feb 4 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 4 PM FRIDAY TO
10 PM EST SATURDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 9 to 16 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph will result in 
  considerable blowing and drifting snow.

* WHERE...Erie, Genesee, and Wyoming counties.

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

* IMPACTS...Travel will be very difficult. Areas of blowing snow 
  will significantly reduce visibility. The hazardous conditions 
  could 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
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...4307 7859 4314 7845 4321 7847 4322 7859 
        4313 7876 4304 7904 4298 7902 4288 7889 4283 7889 
        4294 7864 
TIME Y21M02D05T2100Z-Y21M02D06T0600Z
COORD...4301 7812 4306 7829 4305 7856 4295 7895 
        4286 7889 4277 7895 4258 7929 4264 7887 4275 7840 
        4282 7823 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4289 7831 4300 7830 4303 7834 4302 7853 
        4298 7878 4292 7891 4281 7890 4273 7900 4274 7879 
        4285 7838 
TIME Y21M02D06T1800Z-Y21M02D07T0300Z

$$

NYZ001-002-051200-
/O.CON.KBUF.WW.Y.0010.210205T2100Z-210207T0300Z/
Niagara-Orleans-
Including the cities of Niagara Falls and Medina
1040 PM EST Thu Feb 4 2021

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

* WHAT...Lake effect snow expected. Total snow accumulations of 
  5 to 8 inches in the most persistent lake snows. Winds gusting 
  as high as 40 mph will result in considerable blowing and 
  drifting snow. Most of the snow will occur on Friday evening 
  before the main band of snow moves mainly south of the area.

* WHERE...Niagara and Orleans counties.

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

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

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.

&&

$$

NYZ007-008-051200-
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1040 PM EST Thu Feb 4 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY EVENING
THROUGH LATE SATURDAY NIGHT...

* WHAT...Heavy lake effect snow possible. Total snow 
  accumulations of 9 inches or more possible in the most 
  persistent lake snows. Winds could gust as high as 40 mph 
  resulting in considerable blowing and drifting snow.

* WHERE...Jefferson and Lewis counties. The heaviest snow over 
  Lewis county will occur north of Lowville.

* WHEN...From Friday evening through late Saturday night.

* IMPACTS...Travel could be very difficult. Areas of blowing 
  snow will significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Narrow bands of heavy snow could impact portions of the region.
Localized travel problems will be possible.

&&

$$
312 
WWUS41 KBUF 050914
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
414 AM EST Fri Feb 5 2021

NYZ007-051715-
/O.UPG.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
/O.EXB.KBUF.LE.W.0006.210206T0000Z-210207T0600Z/
/O.EXB.KBUF.WW.Y.0010.210205T0914Z-210206T0000Z/
Jefferson-
Including the city of Watertown
414 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...LAKE EFFECT SNOW WARNING IN EFFECT FROM 7 PM THIS EVENING TO
1 AM EST SUNDAY...

* WHAT...For the Lake Effect Snow Warning, heavy lake effect snow
  expected. Total snow accumulations of 8 to 15 inches in the most
  persistent lake snows. Winds gusting as high as 40 mph will
  result in considerable blowing and drifting snow with near
  white-out conditions at times. For the Winter Weather Advisory,
  snow. Additional snow accumulations of 3 to 5 inches. 

* WHERE...Jefferson county.

* WHEN...For the Lake Effect Snow Warning, from 7 PM this 
  evening to 1 AM EST Sunday. For the Winter Weather Advisory, 
  until 7 PM EST this evening.

* IMPACTS...Travel will be very difficult. Areas of blowing snow
  will significantly reduce visibility. The hazardous conditions 
  could impact today's 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...4428 7556 4437 7576 4435 7601 4426 7602 
        4418 7631 4412 7634 4396 7626 4402 7616 4392 7612 
        4408 7594 
TIME Y21M02D06T0000Z-Y21M02D06T0600Z
COORD...4425 7548 4433 7568 4421 7619 4405 7634 
        4403 7613 4380 7623 4368 7608 4370 7583 4389 7581 
        4401 7550 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4401 7550 4423 7552 4417 7595 4408 7615 
        4401 7613 4395 7612 4387 7628 4369 7620 4369 7598 
        4387 7583 
TIME Y21M02D06T1800Z-Y21M02D07T0600Z

$$

NYZ010>012-085-051715-
/O.CON.KBUF.LE.W.0006.210205T2100Z-210207T0300Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
414 AM EST Fri Feb 5 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM EST SATURDAY...

* WHAT...Heavy lake effect snow expected. Total snow accumulations
  of 9 to 18 inches in the most persistent lake snows. Winds
  gusting as high as 40 mph will result in considerable blowing
  and drifting snow with near white-out conditions at times.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From 4 PM this afternoon to 10 PM EST Saturday.

* IMPACTS...Travel will be very difficult. Areas of blowing snow
  will significantly reduce visibility. The hazardous conditions
  could impact this evening's 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...4307 7859 4314 7845 4321 7847 4322 7859 
        4313 7876 4304 7904 4298 7902 4288 7889 4283 7889 
        4294 7864 
TIME Y21M02D05T2100Z-Y21M02D06T0600Z
COORD...4301 7812 4306 7829 4305 7856 4295 7895 
        4286 7889 4277 7895 4258 7929 4264 7887 4275 7840 
        4282 7823 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4289 7831 4300 7830 4303 7834 4302 7853 
        4298 7878 4292 7891 4281 7890 4273 7900 4274 7879 
        4285 7838 
TIME Y21M02D06T1800Z-Y21M02D07T0300Z

$$

NYZ008-051715-
/O.EXB.KBUF.WW.Y.0010.210205T0914Z-210206T0000Z/
/O.CON.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
Lewis-
Including the city of Lowville
414 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
LATE SATURDAY NIGHT...

* WHAT...For the Winter Weather Advisory, snow. Snow accumulations
  of 3 to 5 inches. For the Winter Storm Watch, heavy lake effect
  snow possible. Total snow accumulations of 6 to 12 inches 
  possible in the most persistent lake snows. Winds could gust as 
  high as 35 mph.

* WHERE...Lewis county.

* WHEN...For the Winter Weather Advisory, until 7 PM EST this 
  evening. For the Winter Storm Watch, from this evening through 
  late Saturday night.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact today's morning and evening commutes.

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.

&&

$$

NYZ006-051715-
/O.EXB.KBUF.WW.Y.0010.210205T0914Z-210206T0000Z/
Oswego-
Including the city of Oswego
414 AM EST Fri Feb 5 2021

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

* WHAT...Snow. Snow accumulations of 3 to 5 inches. Winds gusting
  as high as 35 mph.

* WHERE...Oswego county.

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

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

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.

&&

$$

NYZ001-002-051715-
/O.CON.KBUF.WW.Y.0010.210205T2100Z-210207T0300Z/
Niagara-Orleans-
Including the cities of Niagara Falls and Medina
414 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM EST SATURDAY...

* WHAT...Lake effect snow expected. Total snow accumulations of 4
  to 8 inches in the most persistent lake snows. Winds gusting as
  high as 40 mph will result in considerable blowing and drifting
  snow. Most of the snow will occur late this afternoon and this
  evening before the main band of snow moves mainly south of the 
  area.

* WHERE...Niagara and Orleans counties.

* WHEN...From 4 PM this afternoon to 10 PM EST Saturday.

* IMPACTS...Travel could be difficult. The hazardous conditions
  could impact this evening's 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
360 
WWUS41 KBUF 051552
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1052 AM EST Fri Feb 5 2021

NYZ008-060000-
/O.UPG.KBUF.WS.A.0003.210206T0000Z-210207T0600Z/
/O.EXA.KBUF.LE.W.0006.210206T0000Z-210207T0600Z/
/O.CON.KBUF.WW.Y.0010.000000T0000Z-210206T0000Z/
Lewis-
Including the city of Lowville
1052 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...LAKE EFFECT SNOW WARNING IN EFFECT FROM 7 PM THIS EVENING TO
1 AM EST SUNDAY...

* WHAT...For the Lake Effect Snow Warning, heavy lake effect snow
  expected. Total snow accumulations of 7 to 14 inches in the most
  persistent lake snows from the northern Tug Hill to far northern
  Lewis county, including Copenhagen and Harrisville. Less
  snowfall expected south of Lowville to Constableville. For the
  Winter Weather Advisory, snow. Additional snow accumulations of
  2 to 4 inches. Winds gusting as high as 35 mph.

* WHERE...Lewis county.

* WHEN...For the Lake Effect Snow Warning, from 7 PM this 
  evening to 1 AM EST Sunday. For the Winter Weather Advisory, 
  until 7 PM EST this evening.

* 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.

Periods of snow through this afternoon 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.

&&

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...4425 7548 4433 7568 4421 7619 4405 7634 
        4403 7613 4380 7623 4368 7608 4370 7583 4389 7581 
        4401 7550 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4401 7550 4423 7552 4417 7595 4408 7615 
        4401 7613 4395 7612 4387 7628 4369 7620 4369 7598 
        4387 7583 
TIME Y21M02D06T1800Z-Y21M02D07T0600Z

$$

NYZ007-060000-
/O.CON.KBUF.LE.W.0006.210206T0000Z-210207T0600Z/
/O.CON.KBUF.WW.Y.0010.000000T0000Z-210206T0000Z/
Jefferson-
Including the city of Watertown
1052 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 1 AM EST SUNDAY...

* WHAT...For the Lake Effect Snow Warning, heavy lake effect snow
  expected. Total snow accumulations of 8 to 16 inches in the 
  most persistent lake snows. Winds gusting as high as 40 mph will
  result in considerable blowing and drifting snow with near 
  white- out conditions at times. For the Winter Weather Advisory,
  snow. Additional snow accumulations of 3 to 5 inches.

* WHERE...Jefferson county.

* WHEN...For the Lake Effect Snow Warning, from 7 PM this 
  evening to 1 AM EST Sunday. For the Winter Weather Advisory, 
  until 7 PM EST this evening.

* IMPACTS...Travel will be very difficult. Areas of blowing snow 
  will significantly reduce visibility. The hazardous conditions 
  could impact today's 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...4428 7556 4437 7576 4435 7601 4426 7602 
        4418 7631 4412 7634 4396 7626 4402 7616 4392 7612 
        4408 7594 
TIME Y21M02D06T0000Z-Y21M02D06T0600Z
COORD...4425 7548 4433 7568 4421 7619 4405 7634 
        4403 7613 4380 7623 4368 7608 4370 7583 4389 7581 
        4401 7550 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4401 7550 4423 7552 4417 7595 4408 7615 
        4401 7613 4395 7612 4387 7628 4369 7620 4369 7598 
        4387 7583 
TIME Y21M02D06T1800Z-Y21M02D07T0600Z

$$

NYZ010>012-085-060000-
/O.CON.KBUF.LE.W.0006.210205T2100Z-210207T0300Z/
Northern Erie-Genesee-Wyoming-Southern Erie-
Including the cities of Buffalo, Batavia, Warsaw, Orchard Park, 
and Springville
1052 AM EST Fri Feb 5 2021

...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM EST SATURDAY...

* WHAT...Heavy lake effect snow expected. Total snow 
  accumulations of 9 to 18 inches in the most persistent lake 
  snows. Winds gusting as high as 40 mph will result in 
  considerable blowing and drifting snow with near white-out 
  conditions at times.

* WHERE...Erie, Genesee, and Wyoming counties.

* WHEN...From 4 PM this afternoon to 10 PM EST Saturday.

* IMPACTS...Travel will be very difficult. Areas of blowing snow 
  will significantly reduce visibility. The hazardous conditions 
  could impact this evening's 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...4307 7859 4314 7845 4321 7847 4322 7859 
        4313 7876 4304 7904 4298 7902 4288 7889 4283 7889 
        4294 7864 
TIME Y21M02D05T2100Z-Y21M02D06T0600Z
COORD...4301 7812 4306 7829 4305 7856 4295 7895 
        4286 7889 4277 7895 4258 7929 4264 7887 4275 7840 
        4282 7823 
TIME Y21M02D06T0600Z-Y21M02D06T1800Z
COORD...4289 7831 4300 7830 4303 7834 4302 7853 
        4298 7878 4292 7891 4281 7890 4273 7900 4274 7879 
        4285 7838 
TIME Y21M02D06T1800Z-Y21M02D07T0300Z

$$

NYZ006-060000-
/O.CON.KBUF.WW.Y.0010.000000T0000Z-210206T0000Z/
Oswego-
Including the city of Oswego
1052 AM EST Fri Feb 5 2021

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

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches,
  mainly over the higher terrain. Winds gusting as high as 35 
  mph.

* WHERE...Oswego county.

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

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

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.

&&

$$

NYZ001-002-060000-
/O.CON.KBUF.WW.Y.0010.210205T2100Z-210207T0300Z/
Niagara-Orleans-
Including the cities of Niagara Falls and Medina
1052 AM EST Fri Feb 5 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 PM EST SATURDAY...

* WHAT...Lake effect snow expected. Total snow accumulations of 
  4 to 8 inches in the most persistent lake snows. Winds gusting 
  as high as 40 mph will result in considerable blowing and 
  drifting snow. Most of the snow will occur late this afternoon 
  and this evening before the main band of snow moves mainly 
  south of the area.

* WHERE...Niagara and Orleans counties.

* WHEN...From 4 PM this afternoon to 10 PM EST Saturday.

* IMPACTS...Travel could be difficult. The hazardous conditions 
  could impact this evening's 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

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 2, 8:12 PM ESTSpecial Weather StatementBUFLewis, Oswego63 min
Feb 3, 3:06 PM ESTGale WatchBUF23 hr

Nearby

Winter Storm Watches in New York, 2021Every winter storm watch 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.