Alert archive / New York / Winter Weather Advisories in 2021

Winter Weather Advisory 21, NWS Albany, NY

December 21, 20214 states

NWS Albany, NY issued this winter weather advisory at Dec 21, 2021, 3:44 PM EST for 4 states. It took effect at Dec 22, 2021, 1:00 AM EST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Dec 21, 2021, 3:44 PM EST (20:44 UTC)
In effect from
Dec 22, 2021, 1:00 AM EST
Expired
Dec 22, 2021, 10:00 AM EST
In force
9 hr
Issued by
NWS Albany, NY

Counties Northwest Hills Planning Region, CT, Berkshire County, MA, Columbia County, NY, Dutchess County, NY, Greene County, NY, Ulster County, NY, Windham County, VT

The radar

The Albany radar (KENX), 60 km from the middle of the area, began a volume at 20:48 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

Albany, NY (KALY), launched 12:00Z, 8.7 hours before the alert went out and 59 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2021-12-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-12-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939587897117136Sfc1 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
1125 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

049 
WWUS41 KALY 212044
WSWALY

URGENT - WINTER WEATHER MESSAGE
National Weather Service Albany NY
344 PM EST Tue Dec 21 2021

CTZ001-MAZ001-025-VTZ014-015-221200-
/O.NEW.KALY.WW.Y.0021.211222T0600Z-211222T1500Z/
Northern Litchfield-Northern Berkshire-Southern Berkshire-
Western Windham-Eastern Windham-
Including the cities of Torrington, Dalton, Hancock, Pittsfield, 
Florida, North Adams, Sandisfield, Great Barrington, 
South Egremont, Stratton, Londonderry, Brattleboro, 
Guilford Center, West Brattleboro, and Bellows Falls
344 PM EST Tue Dec 21 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 1 AM TO 10 AM EST
WEDNESDAY...

* WHAT...Wintry mix including sleet and freezing rain expected.
  Total ice accumulation of a light glaze.

* WHERE...In Vermont, Western Windham and Eastern Windham 
  Counties. In Connecticut, Northern Litchfield County. In 
  Massachusetts, Northern Berkshire and Southern Berkshire 
  Counties.

* WHEN...From 1 AM to 10 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
3 follow-up statements
047 
WWUS41 KALY 220825
WSWALY

URGENT - WINTER WEATHER MESSAGE
National Weather Service Albany NY
325 AM EST Wed Dec 22 2021

CTZ013-NYZ059>061-064>066-221500-
/O.EXA.KALY.WW.Y.0021.000000T0000Z-211222T1500Z/
Southern Litchfield-Eastern Greene-Western Columbia-
Eastern Columbia-Eastern Ulster-Western Dutchess-Eastern Dutchess-
Including the cities of Oakville, Gaylordsville, New Milford, 
Terryville, Thomaston, Catskill, Coxsackie, Athens, Cairo, 
Jefferson Heights, Hudson, New Lebanon, Kingston, New Paltz, 
Poughkeepsie, Beacon, Arlington, Pawling, Wingdale, Dover Plains,
Millbrook, Stanfordville, Pine Plains, and Amenia
325 AM EST Wed Dec 22 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WHAT...Light freezing rain mixed with some sleet. Light ice
  accumulations of a light glaze to less than a tenth of
  ice. Little to no sleet accumulation. 

* WHERE...Southern Litchfield County in northwestern Connecticut
  and the mid Hudson Valley and southern and central Taconics in
  eastern New York.

* WHEN...Until 10 AM EST this morning.

* IMPACTS...Very slippery sidewalks, roads and bridges are 
  possible. The hazardous conditions could impact the morning 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$

CTZ001-MAZ001-025-VTZ014-015-221500-
/O.CON.KALY.WW.Y.0021.000000T0000Z-211222T1500Z/
Northern Litchfield-Northern Berkshire-Southern Berkshire-
Western Windham-Eastern Windham-
Including the cities of Torrington, Dalton, Hancock, Pittsfield, 
Florida, North Adams, Sandisfield, Great Barrington, 
South Egremont, Stratton, Londonderry, Brattleboro, 
Guilford Center, West Brattleboro, and Bellows Falls
325 AM EST Wed Dec 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WHAT...Wintry mix including sleet and light freezing rain
  expected. Total ice accumulation of a tenth of an inch or less
  of ice on untreated surfaces. Little to no sleet accumulation. 

* WHERE...In Vermont, Windham County. In Connecticut, Northern
  Litchfield County. In Massachusetts, the Berkshires. 

* WHEN...Until 10 AM EST this morning.

* IMPACTS...Very slippery sidewalks, roads and bridges are 
  possible. The hazardous conditions could impact the morning 
  commute.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
774 
WWUS41 KALY 221120
WSWALY

URGENT - WINTER WEATHER MESSAGE
National Weather Service Albany NY
620 AM EST Wed Dec 22 2021

CTZ001-013-MAZ001-025-NYZ059>061-064>066-VTZ014-015-221500-
/O.CON.KALY.WW.Y.0021.000000T0000Z-211222T1500Z/
Northern Litchfield-Southern Litchfield-Northern Berkshire-
Southern Berkshire-Eastern Greene-Western Columbia-
Eastern Columbia-Eastern Ulster-Western Dutchess-Eastern Dutchess-
Western Windham-Eastern Windham-
Including the cities of Torrington, Oakville, Gaylordsville, 
New Milford, Terryville, Thomaston, Dalton, Hancock, Pittsfield, 
Florida, North Adams, Sandisfield, Great Barrington, 
South Egremont, Catskill, Coxsackie, Athens, Cairo, 
Jefferson Heights, Hudson, New Lebanon, Kingston, New Paltz, 
Poughkeepsie, Beacon, Arlington, Pawling, Wingdale, Dover Plains,
Millbrook, Stanfordville, Pine Plains, Amenia, Stratton, 
Londonderry, Brattleboro, Guilford Center, West Brattleboro, 
and Bellows Falls
620 AM EST Wed Dec 22 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* WHAT...Light freezing rain mixed with some sleet. Additional
  sleet accumulations of a coating and ice accumulations of a
  light glaze to less than a tenth of an inch.  

* WHERE...Windham County in southern Vermont, Litchfield County 
  in northwestern Connecticut, the mid Hudson Valley and the 
  southern and central Taconics in eastern New York and the 
  Berkshires of western Massachusetts.

* WHEN...Until 10 AM EST this morning.

* IMPACTS...Very slippery sidewalks, roads and bridges are
  possible. The hazardous conditions will impact the morning 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
630 
WWUS41 KALY 221459
WSWALY

URGENT - WINTER WEATHER MESSAGE
National Weather Service Albany NY
959 AM EST Wed Dec 22 2021

CTZ001-013-MAZ001-025-NYZ059>061-064>066-VTZ014-015-221600-
/O.EXP.KALY.WW.Y.0021.000000T0000Z-211222T1500Z/
Northern Litchfield-Southern Litchfield-Northern Berkshire-
Southern Berkshire-Eastern Greene-Western Columbia-
Eastern Columbia-Eastern Ulster-Western Dutchess-Eastern Dutchess-
Western Windham-Eastern Windham-
Including the cities of Torrington, Oakville, Gaylordsville, 
New Milford, Terryville, Thomaston, Dalton, Hancock, Pittsfield, 
Florida, North Adams, Sandisfield, Great Barrington, 
South Egremont, Catskill, Coxsackie, Athens, Cairo, 
Jefferson Heights, Hudson, New Lebanon, Kingston, New Paltz, 
Poughkeepsie, Beacon, Arlington, Pawling, Wingdale, Dover Plains,
Millbrook, Stanfordville, Pine Plains, Amenia, Stratton, 
Londonderry, Brattleboro, Guilford Center, West Brattleboro, 
and Bellows Falls
959 AM EST Wed Dec 22 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM EST THIS
MORNING...

Temperatures in the advisory area have risen into the low to mid
30s and with the bulk of the showers now exiting into New England,
the winter weather advisory for freezing rain will expire at 10am.
Some patchy fog may linger in the advisory area through midday and
any areas that are still near freezing could continue to see
slippery spots, if untreated. 

$$

Nearby

Winter Weather Advisories in New York, 2021Winter Weather Advisories in Massachusetts, 2021Winter Weather Advisories in Vermont, 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.