Alert archive / New York / Winter Weather Advisories in 2021

Winter Weather Advisory 2, NWS New York, NY

January 25, 20214 counties in Connecticut; 9 counties in New York; 5 counties in New Jersey

NWS New York, NY issued this winter weather advisory at Jan 25, 2021, 3:16 PM EST for 4 counties in Connecticut; 9 counties in New York; 5 counties in New Jersey. It took effect at Jan 26, 2021, 7:00 AM EST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
Jan 25, 2021, 3:16 PM EST (20:16 UTC)
In effect from
Jan 26, 2021, 7:00 AM EST
Expired
Jan 27, 2021, 3:37 AM EST
In force
21 hr
Issued by
NWS New York, NY

Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 77 km from the middle of the area, began a volume at 20:16 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

Brookhaven, NY (KOKX), launched 12:00Z, 8.3 hours before the alert went out and 77 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, Brookhaven, NY at 12:00Z on 2021-01-25Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939587897117136156175Sfc1 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
2110 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

474 
WWUS41 KOKX 252016
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
316 PM EST Mon Jan 25 2021

NJZ006-105>108-NYZ072>075-176-260430-
/O.NEW.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-
316 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-260430-
/O.NEW.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
316 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO 6 AM
EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-260430-
/O.NEW.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
316 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO 6 AM
EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

* ADDITIONAL DETAILS...The highest snowfall amounts will be away
  from the coast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
7 follow-up statements
270 
WWUS41 KOKX 252023
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
323 PM EST Mon Jan 25 2021

NYZ178-260500-
/O.EXA.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Southern Queens-
323 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Southern Queens County.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

* ADDITIONAL DETAILS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ006-105>108-NYZ072>075-176-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-
323 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
323 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
323 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

* ADDITIONAL DETAILS...The highest snowfall amounts will be away 
  from the coast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
178 
WWUS41 KOKX 252027 CCA
WSWOKX

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service New York NY
327 PM EST Mon Jan 25 2021

NYZ178-260500-
/O.COR.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Southern Queens-
327 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Southern Queens County.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ006-105>108-NYZ072>075-176-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-
327 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
327 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-260500-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
327 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

* ADDITIONAL DETAILS...The highest snowfall amounts will be away 
  from the coast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
417 
WWUS41 KOKX 260228
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
928 PM EST Mon Jan 25 2021

NJZ006-105>108-NYZ072>075-176-178-261100-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-Southern Queens-
928 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
MIDNIGHT EST TUESDAY NIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to midnight EST Tuesday night.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-261100-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
928 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-261100-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
928 PM EST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO
6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...From 7 AM Tuesday to 6 AM EST Wednesday.

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

* ADDITIONAL DETAILS...The highest snowfall amounts will be away
  from the coast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
827 
WWUS41 KOKX 260852
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
352 AM EST Tue Jan 26 2021

NJZ006-105>108-NYZ072>075-176-178-262200-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-Southern Queens-
352 AM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM THIS
MORNING TO MIDNIGHT EST TONIGHT...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM this morning to midnight EST tonight.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-262200-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
352 AM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM THIS
MORNING TO 6 AM EST WEDNESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...From 7 AM this morning to 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-262200-
/O.CON.KOKX.WW.Y.0002.210126T1200Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
352 AM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 AM THIS
MORNING TO 6 AM EST WEDNESDAY...

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

* WHERE...Portions of southern Connecticut.

* WHEN...From 7 AM this morning to 6 AM EST Wednesday.

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

* ADDITIONAL DETAILS...The highest snowfall amounts will be away
  from the coast..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
088 
WWUS41 KOKX 262023
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
323 PM EST Tue Jan 26 2021

NJZ006-105>108-NYZ072>075-176-178-270500-
/O.CON.KOKX.WW.Y.0002.000000T0000Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-Southern Queens-
323 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST
TONIGHT...

* WHAT...Light freezing rain. Ice accumulations of a light glaze. 

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...Until midnight EST tonight.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

NJZ002-004-103-104-NYZ067>071-270500-
/O.CON.KOKX.WW.Y.0002.000000T0000Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
323 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST
WEDNESDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of one
  to two inches and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...Until 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-270500-
/O.CON.KOKX.WW.Y.0002.000000T0000Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
323 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST
WEDNESDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of one
  to two inches and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...Until 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
802 
WWUS41 KOKX 270018
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
718 PM EST Tue Jan 26 2021

NJZ006-105>108-NYZ072>075-176-178-270130-
/O.CAN.KOKX.WW.Y.0002.000000T0000Z-210127T0500Z/
Hudson-Western Essex-Eastern Essex-Western Union-Eastern Union-
New York (Manhattan)-Bronx-Richmond (Staten Island)-
Kings (Brooklyn)-Northern Queens-Southern Queens-
718 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Temperatures have risen above freezing and are expected to remain
above freezing for much if not all of the night. No significant
additional snow or ice accumulation is expected. If you are out 
this evening, please continue to use extra caution while 
traveling. There may still be some isolated locations that remain 
slippery. 

$$

NJZ002-004-103-104-NYZ067>071-271000-
/O.CON.KOKX.WW.Y.0002.000000T0000Z-210127T1100Z/
Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen-
Orange-Putnam-Rockland-Northern Westchester-Southern Westchester-
718 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST
WEDNESDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of 
  up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of northeast New Jersey and southeast New 
  York.

* WHEN...Until 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

CTZ005>012-271000-
/O.CON.KOKX.WW.Y.0002.000000T0000Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-
718 PM EST Tue Jan 26 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST
WEDNESDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of 
  up to one inch and ice accumulations of a light glaze.

* WHERE...Portions of southern Connecticut.

* WHEN...Until 6 AM EST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

Check local Department of Transportation information services for
the latest road conditions.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/nyc
120 
WWUS41 KOKX 270837
WSWOKX

URGENT - WINTER WEATHER MESSAGE
National Weather Service New York NY
337 AM EST Wed Jan 27 2021

CTZ005>012-NJZ002-004-103-104-NYZ067>071-270945-
/O.CAN.KOKX.WW.Y.0002.000000T0000Z-210127T1100Z/
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-Western Passaic-
Eastern Passaic-Western Bergen-Eastern Bergen-Orange-Putnam-
Rockland-Northern Westchester-Southern Westchester-
337 AM EST Wed Jan 27 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Freezing rain is no longer expected across the forecast area. Any
snow showers or wintry mix will bring only light additional 
accumulations. Therefore, the Winter Weather Advisory has been
cancelled. However, use extra caution when traveling as any 
untreated surfaces will be dangerous.

$$

For more information from the National Weather Service visit
https://weather.gov/nyc

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 New York, NY wrote its last area forecast discussion before this winter weather advisory went out at Jan 25, 12:31 PM EST, 2 hours 45 minutes earlier.

Area forecast discussion, Jan 25, 12:31 PM EST, 2 hours 45 minutes before
Area Forecast Discussion
National Weather Service New York NY
1231 PM EST Mon Jan 25 2021

.SYNOPSIS...
Weak high pressure builds in from the west through today and
into this evening. This will give way late tonight to
approaching multiple low pressure areas. These lows approach
Tuesday into Tuesday night. One low to the west eventually
dissipates with the one going into Atlantic maintaining its
strength going into Wednesday. A coastal storm passes fairly
well south of the area late at night through Thursday. High
pressure then slowly builds back in through Saturday.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
The fcst remains on track.

High pressure gradually builds in from the west but will remain
weak. There will be some ridging aloft that will help promote
subsidence. Dry conditions prevail today. Highs forecast in the
mid 30s to near 40, a consensus of MOS and NBM guidance.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/...
The main focus here will be timing and duration of wintry
precipitation across the region within the Tuesday into early
Wednesday timeframe. The synoptic set up and ambient surface
conditions show very limited snow accumulations along the coast
where temperatures are expected to reach above freezing but with
locations getting farther north and west and inland, surface
temperature will be mostly at or below freezing. The combination
of lack of ice nuclei at times and low level elevated warm
layers above freezing will make for a wintry mix within this
event. Overall, light ice and light snow accumulations are
forecast, relatively higher across the interior. In confidence
increases in these conditions with subsequent forecasts, a
winter weather advisory may be needed.

The precipitation associated with approaching low pressure has
trended slower with numerical weather prediction precipitation
forecasts over the last 24 to 48 hours.

The frontal system will continue to approach the region from the
southwest. The associated surface lows and warm front are still
well south of the region.

Looking at Jan 25th 00Z guidance, again outside of far western
Orange County, Northeast NJ, and NYC, dry conditions expected 00-12Z
Tuesday. Most models have front edge of precip from Western PA east
southeast through SE PA and Southern NJ into DE 00-06Z Tuesday, and
then Western NY State SE through Southern NJ 06-12Z Tuesday. ECMWF
shows more expansion of precip and actually gets into a few western
locations within the region by early Tuesday morning.

For Tuesday, there will be two low pressure areas, one moving
from Ohio to Western PA and another moving east of the mid-
Atlantic. Western low is weakening with time in its
northeastward movement while the one moving out into the
Atlantic maintains its strength and some models indicate it to
slightly deepen. Overrunning precip develops and moves into the
area but is not expected to be intense. Warm air advection aloft
and isentropic lift will lead to developing overrunning
stratiform precipitation. A rain/snow/sleet mix can be expected
along the coast, snow/sleet mix farther interior, with plain
snow across the most interior locations. Temperatures along the
coast being above freezing with a longer duration steady light
precip will make for very little in the way of snow
accumulations. Across the interior, snow accumulations of near 1
to 2 inches is forecast where temperatures will stay below
freezing longer.

Models are coherent in conveying the precip moving across much of
the region and conveys a little more precip than previous runs.

For Tuesday night, shortwave moves in with positive vorticity
advection. The low that was in Western PA eventually diminishes
as it moves farther east while further weakening. The low out in
the Atlantic will continue moving eastward and maintaining its
strength. Precip extends NW from this low into the region.

Some additional light snow as well as freezing rain can be
expected. Less than a tenth of an inch of precip expected so
less than 1 inch of additional snow for the interior and ice
accretions is expected to be less than a tenth of an inch. It
all depends on how much of a deep saturated layer there is and
how much moisture there is in the -10 degree C to -30 degree C
layer. Model soundings are indicating a lack of moisture in this
layer and thereby implying a lack of ice nuclei with some
soundings indicating a slight warm layer above freezing in the
900 to 950mb layer. Along the coast, there is a greater easterly
flow and surface temperatures are kept warmer, mid to upper 30s,
so mainly rain can be expected.

The total precipitation will be less than a tenth of an inch for
Tuesday night so made intensity light and if the moisture ends up
being shallow enough, may even just be drizzle (freezing drizzle for
interior, plain drizzle along the coast).

For Wednesday, shortwave axis within the region in the morning
and to the east in the afternoon, but with another shortwave
approaching from the west. Precip is delayed in this scenario
with mostly cloudy conditions remaining in the afternoon when
precip is expected to taper off. Again, depending on saturation
layer depth and any low level warm layers above freezing, some
light freezing rain and snow is forecast across the interior
with light plain rain along the coast. POPs decrease to slight
chance in the afternoon with mainly dry conditions expected. Dry
conditions remain into Wednesday night for the first half but
slight chance POPs for mainly snow was maintained for second
half of Wednesday night.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
Moving forward, the next in the series Pac systems in the
southern branch will pass off the Mid Atlantic coast Wednesday
night into Thursday. The associated surface low undergoes rapid
deepening during this time, but global models are all in good
agreement with the system passing to our south. Both the GEFS
and ECMWF ensemble members are all clustered close to the
operational tracks at this time. Thus, will only go with a
slight chance of snow late Wednesday into Thursday. It seems
unlikely at this time that there would be any accumulation. More
importantly though, there is the potential for a surge of cold
air behind the system as a piece of the polar vortex drops off
to the south and into the area Thursday night into Friday. Gusty
NW winds during this time will produce wind chill values in the
single digits at night and in the teens during the daytime.
Highs on Friday may not get out the 20s.

The southern branch returns over the weekend as the polar high
gradually retreats Saturday into Saturday night ahead of the
next system. There are some differences at this time with the
magnitude and progression of the system with the GFS and GGEm
the most progressive in bringing winter weather into the area
next Sunday. For the time, due to the uncertainty, chances will
be low at this time. Temperatures will also moderate over the
weekend with highs into the 30s to around 40 on Sunday.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
High pressure will build in from the west today, while low pressure
over the Canadian Maritimes weakens. The high then weakens tonight
as low pressure approaches from the southwest.

VFR conditions are expected through much of the TAF period. A
wintry mix will move into the metro terminals after 15Z Tuesday,
however there is a chance (PROB30) for the wintry mix to move
in between 13Z and 15Z Tuesday along with MVFR conditions.
Precipitation will be light and there may be little restriction
to visibility until after 15Z, along with ceilings lowering to
MVFR.

NW winds generally less than 10 kt today. Winds shift to N/NE late
this afternoon into this evening and remain less than 10 kt.

Around an inch of snow is expected for KJFK and KLGA

1"-2" of snow is expected for most other terminals.

2"-3" of snow is expected for KSWF.

A few hundredths of an inch of ice is possible for KHPN and
KSWF. A trace of ice is possible for KTEB and KBDR.

  ...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...

No unscheduled amendments are expected through tonight.

.OUTLOOK FOR 12Z TUESDAY THROUGH SATURDAY...
.Tuesday Afternoon... Becoming MVFR/IFR in developing light
snow/sleet mix. The wintry precipitation will change to rain at the
coastal terminals in the evening. There is the possibility of
freezing rain at the inland terminals in the evening. NE gusts near
20 kt at the coastal terminals. Gusts diminish at night.
.Wednesday...Chance of MVFR/IFR in light mixed precipitation
changing to all rain for most terminals.
.Thursday...Likely VFR with a low chance of rain and snow. NE-N
winds 10-20G20-30kts.
.Friday...VFR. NW 10-20G20-30kt, strongest at the coastal terminals.
.Saturday...VFR. NW 10-15kt

Detailed information, including hourly TAF wind component forecasts,
can be found at: http:/www.weather.gov/zny/n90

&&

.MARINE...
Conditions should remain below SCA levels today through much of
Wednesday night as the center of high pressure moves overhead today
and a weakening area of low pressure moves over the area Tuesday
night. There may be occasional gusts to 25 kt over the ocean waters
Tuesday afternoon as the low approaches the area.

The pressure gradient increases late Wednesday night and 25 kt gusts
are possible on the ocean waters into Thursday due to the influence
of a coastal storm. Too early to be certain, but a potential of gale
force gusts on all waters exists during Thursday and Thursday night.
Winds and seas subside during Friday, but with advisory conditions
likely.

&&

.HYDROLOGY...
No hydrologic concerns are anticipated through next week.

&&

.OKX WATCHES/WARNINGS/ADVISORIES...
CT...None.
NY...None.
NJ...None.
MARINE...None.

&&
Hazardous weather outlook, Jan 25, 4:26 AM EST, 10 hours 50 minutes before
Hazardous Weather Outlook
National Weather Service New York NY
426 AM EST Mon Jan 25 2021

CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-260930-
Northern Fairfield-Northern New Haven-Northern Middlesex-
Northern New London-Southern Fairfield-Southern New Haven-
Southern Middlesex-Southern New London-Western Passaic-
Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex-
Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland-
Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx-
Richmond (Staten Island)-Kings (Brooklyn)-Northwestern Suffolk-
Northeastern Suffolk-Southwestern Suffolk-Southeastern Suffolk-
Northern Queens-Northern Nassau-Southern Queens-Southern Nassau-
426 AM EST Mon Jan 25 2021

This Hazardous Weather Outlook is for southern Connecticut,
northeast New Jersey and southeast New York.

.DAY ONE...Today 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 that would meet NWS
warning criteria.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

ANZ330-335-338-340-345-350-353-355-260930-
Long Island Sound East of New Haven CT/Port Jefferson NY-
Long Island Sound West of New Haven CT/Port Jefferson NY-
New York Harbor-Peconic and Gardiners Bays-
South Shore Bays from Jones Inlet through Shinnecock Bay-
Moriches Inlet NY to Montauk Point NY out 20 nm-
Fire Island Inlet NY to Moriches Inlet NY out 20 nm-
Sandy Hook NJ to Fire Island Inlet NY out 20 nm-
426 AM EST Mon Jan 25 2021

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today 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 that would meet NWS
warning criteria.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

&&

This Hazardous Weather Outlook provides a summary of potential
widespread hazardous weather events that may reach NWS warning
criteria. Most long fused NWS watches, warnings, and advisories in
effect are highlighted.

Please refer to the latest NWS forecasts for weather not meeting NWS
warning criteria.

Nearby

Winter Weather Advisories in New York, 2021Winter Weather Advisories in New Jersey, 2021Winter Weather Advisories in Connecticut, 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.