Winter Weather Advisory 18, NWS Buffalo, NY

583 
WWUS41 KBUF 201327
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
927 AM EDT Tue Apr 20 2021

NYZ001-002-010>012-019-020-085-202130-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-
Cattaraugus-Southern Erie-
Including the cities of Niagara Falls, Medina, Buffalo, Batavia, 
Warsaw, Jamestown, Olean, Orchard Park, and Springville
927 AM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 2 PM EDT WEDNESDAY...

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

* WHERE...Niagara, Orleans, Erie, Genesee, Wyoming, Chautauqua, 
  and Cattaraugus counties.

* WHEN...From midnight tonight to 2 PM EDT Wednesday. The heaviest
  snow will fall from the pre-dawn hours through mid to late
  morning.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated 
  power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  and immediate lakeshores.

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.

&&

$$

Hitchcock

127 
WWUS41 KBUF 201751
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
151 PM EDT Tue Apr 20 2021

NYZ003-013-210200-
/O.EXB.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Monroe-Livingston-
Including the cities of Rochester and Geneseo
151 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 2 PM EDT
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Monroe and Livingston counties.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated 
  power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along the
  immediate Lake Ontario shore.

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.

&&

$$

NYZ021-210200-
/O.EXB.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Allegany-
Including the city of Wellsville
151 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 2 PM EDT
WEDNESDAY...

* WHAT...Snow and mixed precipitation expected. Total snow
  accumulations of 2 to 4 inches and ice accumulations of a few
  hundredths of an inch.

* WHERE...Allegany county.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated power
  outages and a few downed tree limbs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ007-008-210200-
/O.EXB.KBUF.WW.Y.0018.210421T0800Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
151 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 5 PM EDT
WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 inches,
  greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations
  across the higher terrain of the Tug Hill Plateau.

* WHEN...From 4 AM to 5 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated 
  power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along the
  immediate Lake Ontario shore.

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.

&&

$$

NYZ012-019-020-085-210200-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
151 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 2 PM EDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 inches.
  A brief period of sleet and freezing rain is possible near the
  Pennsylvania State line.

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

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated 
  power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along the
  immediate Lake Erie shore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ001-002-010-011-210200-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-
Including the cities of Niagara Falls, Medina, Buffalo, 
and Batavia
151 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 2 PM EDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Niagara, Orleans, Northern Erie, and Genesee counties.

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and may result in isolated 
  power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along the
  immediate Lake Erie and Lake Ontario shore.

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.

&&

$$

Hitchcock

262 
WWUS41 KBUF 202200
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
600 PM EDT Tue Apr 20 2021

NYZ012-019-020-085-210600-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
600 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 2 PM EDT WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 4 to 6 
  inches. A brief period of sleet and freezing rain is possible 
  near the Pennsylvania State line.

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

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and will likely result in 
  scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie shore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ001-002-010-011-210600-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-
Including the cities of Niagara Falls, Medina, Buffalo, 
and Batavia
600 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 2 PM EDT WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Niagara, Orleans, Northern Erie, and Genesee counties.

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and will likely result in 
  scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie and Lake Ontario shore.

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.

&&

$$

NYZ003-013-210600-
/O.CON.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Monroe-Livingston-
Including the cities of Rochester and Geneseo
600 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM
EDT WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Monroe and Livingston counties.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact the Wednesday morning commute.
  This will be a heavy, wet snow, and will likely result in
  scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

NYZ021-210600-
/O.CON.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Allegany-
Including the city of Wellsville
600 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM
EDT WEDNESDAY...

* WHAT...Snow and mixed precipitation expected. Total snow 
  accumulations of 2 to 4 inches and ice accumulations of a few 
  hundredths of an inch.

* WHERE...Allegany county.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and may result in 
  isolated power outages and a few downed tree limbs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ007-008-210600-
/O.CON.KBUF.WW.Y.0018.210421T0800Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
600 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 5 PM
EDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches, greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations 
  across the higher terrain of the Tug Hill Plateau.

* WHEN...From 4 AM to 5 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and may result in 
  isolated power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

413 
WWUS41 KBUF 210234
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1034 PM EDT Tue Apr 20 2021

NYZ012-019-020-085-211100-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
1034 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT
WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 4 to 6 
  inches. A brief period of sleet and freezing rain is possible 
  near the Pennsylvania State line.

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

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and will likely 
  result in scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie shore.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ001-002-010-011-211100-
/O.CON.KBUF.WW.Y.0018.210421T0400Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-
Including the cities of Niagara Falls, Medina, Buffalo, 
and Batavia
1034 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT
WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Niagara, Orleans, Northern Erie, and Genesee counties.

* WHEN...From midnight tonight to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and will likely 
  result in scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie and Lake Ontario shore.

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.

&&

$$

NYZ003-013-211100-
/O.CON.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Monroe-Livingston-
Including the cities of Rochester and Geneseo
1034 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM
EDT WEDNESDAY...

* WHAT...Wet snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Monroe and Livingston counties.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and will likely 
  result in scattered power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

NYZ021-211100-
/O.CON.KBUF.WW.Y.0018.210421T0600Z-210421T1800Z/
Allegany-
Including the city of Wellsville
1034 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 AM TO 2 PM
EDT WEDNESDAY...

* WHAT...Snow and mixed precipitation expected. Total snow 
  accumulations of 2 to 4 inches and ice accumulations of a few 
  hundredths of an inch.

* WHERE...Allegany county.

* WHEN...From 2 AM to 2 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and may result in 
  isolated power outages and a few downed tree limbs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Periods of snow, sleet or freezing rain will result in slippery
roads and limited visibilities. Slow down and use caution while
driving.

Submit snow and ice reports through our website or social media.

&&

$$

NYZ007-008-211100-
/O.CON.KBUF.WW.Y.0018.210421T0800Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1034 PM EDT Tue Apr 20 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 5 PM
EDT WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches, greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations 
  across the higher terrain of the Tug Hill Plateau.

* WHEN...From 4 AM to 5 PM EDT Wednesday.

* IMPACTS...Plan on slushy and very slippery road conditions. 
  The hazardous conditions will impact the Wednesday morning 
  commute. This will be a heavy, wet snow, and may result in 
  isolated power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

079 
WWUS41 KBUF 210839
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
439 AM EDT Wed Apr 21 2021

NYZ012-019-020-085-211645-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
439 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 2 to 5 inches. A 
  brief period of sleet and freezing rain is possible near the 
  Pennsylvania State line early this morning.

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

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact this morning's commute. This
  will be a heavy, wet snow, and may result in some power outages
  and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie shore.

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.

&&

$$

NYZ001-002-010-011-211645-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-
Including the cities of Niagara Falls, Medina, Buffalo, 
and Batavia
439 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 2 to 3 inches.

* WHERE...Niagara, Orleans, Northern Erie, and Genesee counties.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact this morning's commute. This
  will be a heavy, wet snow, and may result in some power outages
  and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Erie and Lake Ontario shore.

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.

&&

$$

NYZ003-013-211645-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Monroe-Livingston-
Including the cities of Rochester and Geneseo
439 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 4 inches.

* WHERE...Monroe and Livingston counties.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions will impact this morning's commute. This
  will be a heavy, wet snow, and may result in some power outages
  and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

NYZ021-211645-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Allegany-
Including the city of Wellsville
439 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow and mixed precipitation expected. Total snow
  accumulations of 1 to 3 inches and ice accumulations of a light
  glaze.

* WHERE...Allegany county.

* WHEN...Until 2 PM EDT this afternoon.

* 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.

&&

$$

NYZ007-008-211645-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
439 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...Snow expected. Total snow accumulations of 3 to 6 
  inches, greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations 
  across the higher terrain of the Tug Hill Plateau.

* WHEN...Until 5 PM EDT this afternoon.

* IMPACTS...Plan on slushy and very slippery road conditions. The
  hazardous conditions may impact the commutes this morning and
  this afternoon. This will be a heavy, wet snow, and may result 
  in isolated power outages and a few downed tree limbs.

* ADDITIONAL DETAILS...Snow accumulations will be lower along 
  the immediate Lake Ontario shore.

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.

&&

$$

TMA

345 
WWUS41 KBUF 211424
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1024 AM EDT Wed Apr 21 2021

NYZ012-019-020-085-211800-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Wyoming-Chautauqua-Cattaraugus-Southern Erie-
Including the cities of Warsaw, Jamestown, Olean, Orchard Park, 
and Springville
1024 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 2 inches.

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

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions in some
  locations. This will be a heavy, wet snow, and may result in a
  few isolated power outages and a few downed tree limbs.

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.

&&

$$

NYZ001-002-010-011-211800-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Niagara-Orleans-Northern Erie-Genesee-
Including the cities of Niagara Falls, Medina, Buffalo, 
and Batavia
1024 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulation around an inch.

* WHERE...Niagara, Orleans, Northern Erie, and Genesee counties.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions in some
  locations. This will be a heavy, wet snow, and may result in a
  few isolated power outages and a few downed tree limbs.

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.

&&

$$

NYZ003-013-211800-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Monroe-Livingston-
Including the cities of Rochester and Geneseo
1024 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of around an inch.

* WHERE...Monroe and Livingston counties.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions in some
  locations. This will be a heavy, wet snow, and may result in a
  few isolated power outages and a few downed tree limbs.

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.

&&

$$

NYZ021-211800-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Allegany-
Including the city of Wellsville
1024 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of around an inch.

* WHERE...Allegany county.

* WHEN...Until 2 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions in some
  locations. This will be a heavy, wet snow, and may result in a
  few isolated power outages and a few downed tree limbs.

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.

&&

$$

NYZ007-008-212100-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1024 AM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches,
  greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations
  will be across the Tug Hill Plateau and western foothills of the
  Adirondacks.

* WHEN...Until 5 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions in some
  locations. This will be a heavy, wet snow, and may result in a
  few isolated power outages and a few downed tree limbs.

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.

&&

$$

Hitchcock

406 
WWUS41 KBUF 211637
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1237 PM EDT Wed Apr 21 2021

NYZ001>003-010>013-019>021-085-211745-
/O.CAN.KBUF.WW.Y.0018.000000T0000Z-210421T1800Z/
Niagara-Orleans-Monroe-Northern Erie-Genesee-Wyoming-Livingston-
Chautauqua-Cattaraugus-Allegany-Southern Erie-
Including the cities of Niagara Falls, Medina, Rochester, 
Buffalo, Batavia, Warsaw, Geneseo, Jamestown, Olean, Wellsville, 
Orchard Park, and Springville
1237 PM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Light snow will continue to taper off this afternoon. Any
additional accumulation will be an inch or less on grassy
surfaces.

$$

NYZ007-008-212100-
/O.CON.KBUF.WW.Y.0018.000000T0000Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
1237 PM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM EDT THIS
AFTERNOON...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches,
  greatest across higher terrain.

* WHERE...Jefferson and Lewis counties. Greatest accumulations
  will be across the Tug Hill Plateau and western foothills of 
  the Adirondacks.

* WHEN...Until 5 PM EDT this afternoon.

* IMPACTS...Plan on slushy and slippery road conditions at times,
  especially across higher terrain. This will be a heavy, wet 
  snow, and may result in a few isolated power outages and a few 
  downed tree limbs.

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.

&&

$$

Hitchcock

887 
WWUS41 KBUF 211932
WSWBUF

URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
332 PM EDT Wed Apr 21 2021

NYZ007-008-212045-
/O.CAN.KBUF.WW.Y.0018.000000T0000Z-210421T2100Z/
Jefferson-Lewis-
Including the cities of Watertown and Lowville
332 PM EDT Wed Apr 21 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

While some lingering light snow late this afternoon may accumulate
a half inch or so on elevated surfaces...the threat for
significant snowfall has ended.

Some lake effect snow showers will then blossom later tonight...
but insignificant accumulations are expected.

$$

Area Forecast Discussion
National Weather Service Buffalo NY
141 AM EDT Tue Apr 20 2021

.SYNOPSIS...
Showers ahead of approaching cold front will spread from western
New York to the Genesee valley and eastern Lake Ontario region
overnight. More importantly, this cold front will signal the
beginning of a change to unseasonably cold weather. Low pressure
will pass just south of the region later Tuesday night through
Wednesday morning, producing widespread accumulating snow across
the region.

&&

.NEAR TERM /THROUGH TODAY/...
Light showers continuing to moving over western New York as cold
front enters the region. Expect the front and showers to progress to
the eastern Lake Ontario region by late tonight. Large scale forcing
supporting the front will weaken with time and eastern extent as the
mid level trough over Lake Superior moves northeast into Quebec. The
showers will diminish in coverage and intensity by late tonight as
forcing weakens, with just a few light showers left by daybreak
Tuesday.

Latest model guidance remains consistent with going forecast in
showing rain ending in Buffalo and Rochester by around daybreak.
There will still be a few leftover showers in the morning from
the western Southern Tier eastward through the Finger Lakes to
the eastern Lake Ontario region, but these showers should end by
midday. Also, may see a few wet flakes mix with the rain on
Tuesday morning over higher terrain of Southern Tier. Clouds
will linger over most of the area Tuesday as the frontal zone
stalls nearby across PA. Temperatures will be much cooler behind
the cold front, with highs only in the 40s in most areas.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/...
A late season accumulating snowfall event continues to appear more
and more likely later Tuesday night through Wednesday across most of
the region. A mid level trough will dig and sharpen into the upper
Midwest late Tuesday, then reach the central Great Lakes Wednesday.
DPVA and flow adjustments downstream of the digging trough will
force a strong baroclinic wave to develop along a stalled frontal
zone over the Ohio Valley, with the resulting surface low tracking
from the Ohio Valley Tuesday night to southern New England by
Wednesday afternoon. A shield of widespread precipitation will be
forced by strong frontogenesis and differential temperature
advection to the north of the low track, with an added boost of
strong DPVA ahead of the digging trough. Model guidance continues to
converge on a common solution, but there are still enough
differences in low track and frontal position to yield some
uncertainty with the forecast. The NAM remains on the northern edge
of the guidance envelope, with the GFS/ECMWF farther south.

Tuesday evening will start dry, then light precipitation will
develop from southwest to northeast from late evening through the
early overnight. Colder air will still be in the process of
filtering into the region on low level northerly flow, so this
initial light precipitation may be a rain/snow mix. Late Tuesday
night through Wednesday morning frontogenesis will intensify as the
baroclinic wave reaches our longitude, resulting in a period of
moderate or even marginally heavy precipitation. The combination of
ongoing cold advection, cooling from melting processes, and wet
bulbing of the column will cool the atmosphere sufficiently to
change all the precipitation to snow. Forecast soundings continue to
suggest there may be a narrow zone of freezing rain/sleet near the
rain/snow transition line, but if the farther south model solutions
verify this may end up just south of the NY/PA border.

The ground is warm in the second half of April, so that will
initially inhibit snow accumulation. Snowfall rate is the key to
accumulation at this time of year, if it snows hard enough the snow
can overcome the warm surface and cover the ground. Once the ground
is covered, the warm ground becomes irrelevant with an insulating
layer of snow between the ground and new snow accumulation on top.
Given the strong forcing in this case, we expect the warm ground to
be overcome for a window from late Tuesday night through Wednesday
morning when snowfall rates are greatest.

Initial first guess accumulations are 2-5" for lower elevations and
4-6" for higher terrain. These numbers may change with future
changes in model guidance. The expected accumulation is below
watch/warning criteria, but nonetheless this may have a notable
impact to travel, especially around the Wednesday morning commute.
The heavy/wet nature of the snow may also result in a few isolated
power outages and a few downed tree limbs.

The widespread snow will taper off quickly from west to east
Wednesday afternoon, to be replaced by a few snow showers as cold
air pours into the eastern Great Lakes in the afternoon. Lake effect
and upslope snow showers will become more widespread Wednesday night
through Thursday morning as the pool of coldest air aloft crosses
the region. Northwest flow will direct most of this into the western
Southern Tier off Lake Erie, and from Orleans County eastward across
Rochester to Oswego County and down into the Finger Lakes off Lake
Ontario. Upslope flow will also keep more widespread snow showers
going across the higher terrain east of Lake Ontario. All of this
may produce localized additional accumulations of 1-3" Wednesday
night through Thursday morning in the most persistent bands. The
snow showers will become more scattered in nature and focused over
the land by Thursday afternoon before finally ending later Thursday
night as high pressure starts to build towards the eastern Great
Lakes.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Upper level ridging late Thursday night through Friday night will
promote mainly dry conditions. Looking into the weekend, a shortwave
will kick out in front of the next upper level trough Friday night.
This trough will support a low to form over the western Great Lakes
by Saturday morning. Attached to said low, a frontal boundary will
approach and eventually cross the area late Saturday afternoon
through Sunday. Therefore, have increasing chances for rain showers
Saturday, though the morning looks to remain dry. The best chances
and likelihood of showers will arrive into the area late Saturday
afternoon and Saturday night. The frontal passage should be exiting
the region Sunday which will decrease chances for showers from west
to east. By Monday, upper level ridging will support an area of
surface high pressure and bringing back dry weather to the area.

Otherwise, upper level ridging and surface high pressure Friday will
support warm air advection into the region and allow temperatures to
rise up into the mid to upper 50s Friday and upper 50s and low 60s
Saturday. A brief interlude of cool temperatures on Sunday with
highs in the low to mid 50s due to the passage of the frontal
boundary the night prior. Temperatures will then rebound into the
mid to upper 50s on Monday.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
A cold front will move from Western NY to the eastern Lake Ontario
region by late tonight. A band of rain tied to the front will
continue to spread east across the area through the overnight hours,
with areas of MVFR VSBY developing in the steadier rainfall. VFR
CIGS will deteriorate to MVFR/IFR behind the cold front, with IFR
most likely across higher terrain and MVFR favored at lower
elevations.

The rain will taper off late tonight and Tuesday morning from
northwest to southeast. Lingering MVFR/IFR CIGS in the morning will
improve to mainly VFR in the afternoon with a veil of mid/high
clouds remaining across the eastern Great Lakes to the north of the
departing cold front.

Outlook...

Tuesday Night...VFR deteriorating to widespread IFR late with
snow developing.
Wednesday...Widespread IFR in snow, improving to MVFR/VFR in
the afternoon as snow ends from west to east.
Wednesday night and Thursday...MVFR/local IFR with scattered
snow showers and some lake effect snow showers southeast of the
lakes. Windy.
Friday and Saturday...Mainly VFR.

&&

.MARINE...
A cold front will cross the eastern Great Lakes the rest of tonight,
with westerly winds increasing behind the front. Though there may be
lull just behind the front after an initial surge of strong and
gusty winds, winds and waves later tonight appear to increase enough
to justify Small Craft Advisories for all but the  Niagara River and
St. Lawrence River right through Tuesday afternoon. Details on Small
Craft Advisories are outlined below.

Low pressure is then forecast to move east across Pennsylvania late
Tuesday night to New England by Wednesday afternoon. Winds will
become northeast and increase Tuesday night as this low approaches,
then become northwest and increase further Wednesday afternoon and
Wednesday night as cold air pours into the eastern Great Lakes
behind the departing low. A long period of Small Craft Advisory
conditions is expected on Lakes Erie and Ontario from Wednesday
through Friday.

&&

.BUF WATCHES/WARNINGS/ADVISORIES...
NY...None.
MARINE...Small Craft Advisory until 5 PM EDT this afternoon for LEZ040-
         041.
         Small Craft Advisory until 5 PM EDT this afternoon
         for LOZ042-043.
         Small Craft Advisory until 8 PM EDT this evening for
         LOZ044-045.

&&

SYNOPSIS...Hitchcock/JLA/TMA
NEAR TERM...Hitchcock/JLA/TMA
SHORT TERM...Hitchcock
LONG TERM...EAJ
AVIATION...Hitchcock/JLA/TMA
MARINE...Hitchcock/JLA/TMA

Hazardous Weather Outlook
National Weather Service Buffalo NY
232 PM EDT Mon Apr 19 2021

NYZ001>008-010>014-019>021-085-201845-
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-
Northern Erie-Genesee-Wyoming-Livingston-Ontario-Chautauqua-
Cattaraugus-Allegany-Southern Erie-
232 PM EDT Mon Apr 19 2021

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

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Low pressure will pass south of the region late Tuesday night and
Wednesday, spreading widespread accumulating snow across our region.
There still remains some uncertainty with the exact track of this
system and location of heaviest snowfall.

The snowfall will likely be heavy enough to impact travel later
Tuesday night into Wednesday, with the worst travel conditions likely
occuring during the Wednesday morning commute. This will be a heavy,
wet snow, and may result in isolated power outages and downed tree
limbs.

.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-LOZ030-042>045-062>065-SLZ022-024-201845-
Upper Niagara River and Buffalo Harbor-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
Lower Niagara River-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
232 PM EDT Mon Apr 19 2021

This Hazardous Weather Outlook is for the New York waters of Lake
Erie, Lake Ontario, and the Saint Lawrence River.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

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

Hitchcock