Alert archive / New York / Winter Weather Advisories in 2021
Winter Weather Advisory 21, NWS Buffalo, NY
NWS Buffalo, NY issued this winter weather advisory at Nov 18, 2021, 3:14 AM EST for 6 counties in New York. It took effect at Nov 18, 2021, 7:00 PM EST. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Nov 18, 2021, 3:14 AM EST (08:14 UTC)
- In effect from
- Nov 18, 2021, 7:00 PM EST
- Expired
- Nov 19, 2021, 9:23 AM EST
- In force
- 14 hr
- Issued by
- NWS Buffalo, NY
Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Lewis County, NY, Oswego County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 77 km from the middle of the area, began a volume at 08:14 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 00:00Z, 8.2 hours before the alert went out and 74 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
157 WWUS41 KBUF 180814 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 314 AM EST Thu Nov 18 2021 NYZ012-085-181800- /O.NEW.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Wyoming-Southern Erie- Including the cities of Warsaw, Orchard Park, and Springville 314 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 3 to 5 inches in the most persistent lake snows. The most snow will occur tonight inland across the Boston Hills and the higher terrain of Wyoming county. * WHERE...Wyoming and Southern Erie counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ019-020-181800- /O.NEW.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Chautauqua-Cattaraugus- Including the cities of Jamestown and Olean 314 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 7 inches in the most persistent lake snows. The most snow will occur tonight across the Chautauqua Ridge and over the higher terrain of northern Cattaraugus county. * WHERE...Chautauqua and Cattaraugus counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ008-181800- /O.NEW.KBUF.WW.Y.0021.211119T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 314 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The most snow will occur tonight on the Tug Hill Plateau. * WHERE...Lewis county. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ006-181800- /O.NEW.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Oswego- Including the city of Oswego 314 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The most snow will occur toward the Tug Hill Plateau. * WHERE...Oswego county. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ JLA
5 follow-up statements
861 WWUS41 KBUF 181433 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 933 AM EST Thu Nov 18 2021 NYZ012-085-182245- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Wyoming-Southern Erie- Including the cities of Warsaw, Orchard Park, and Springville 933 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 3 to 5 inches in the most persistent lake snows. The majority of the snow will occur tonight inland across the Boston Hills and the higher terrain of Wyoming county. * WHERE...Wyoming and Southern Erie counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute 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. && $$ NYZ019-020-182245- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Chautauqua-Cattaraugus- Including the cities of Jamestown and Olean 933 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 7 inches in the most persistent lake snows. The majority of the snow will occur tonight across the Chautauqua Ridge and over the higher terrain of northern Cattaraugus county. * WHERE...Chautauqua and Cattaraugus counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ008-182245- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 933 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur late tonight on the southern Tug Hill Plateau. * WHERE...Lewis county. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning 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. && $$ NYZ006-182245- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Oswego- Including the city of Oswego 933 AM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur over the southern Tug Hill Plateau. * WHERE...Oswego county. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ Hitchcock
551 WWUS41 KBUF 181945 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 245 PM EST Thu Nov 18 2021 NYZ012-085-190345- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Wyoming-Southern Erie- Including the cities of Warsaw, Orchard Park, and Springville 245 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 3 to 5 inches in the most persistent lake snows. The majority of the snow will occur tonight inland across the Boston Hills and the higher terrain of Wyoming county. * WHERE...Wyoming and Southern Erie counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute 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. && $$ NYZ019-020-190345- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Chautauqua-Cattaraugus- Including the cities of Jamestown and Olean 245 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 6 inches in the most persistent lake snows. The majority of the snow will occur tonight across the Chautauqua Ridge and over the higher terrain of northern Cattaraugus county. * WHERE...Chautauqua and Cattaraugus counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ008-190345- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 245 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur late tonight on the southern Tug Hill Plateau. * WHERE...Lewis county. Greatest snow amounts over the southern portion of the Tug Hill. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning 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. && $$ NYZ006-190345- /O.CON.KBUF.WW.Y.0021.211119T0000Z-211119T1800Z/ Oswego- Including the city of Oswego 245 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur over the southern Tug Hill Plateau. * WHERE...Oswego county. Greatest snow amounts in far eastern Oswego County. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ Hitchcock
503 WWUS41 KBUF 190105 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 805 PM EST Thu Nov 18 2021 NYZ012-085-190930- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Wyoming-Southern Erie- Including the cities of Warsaw, Orchard Park, and Springville 805 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 3 to 5 inches in the most persistent lake snows. The majority of the snow will occur tonight inland across the Boston Hills and the higher terrain of Wyoming county. * WHERE...Wyoming and Southern Erie counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute 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. && $$ NYZ019-020-190930- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Chautauqua-Cattaraugus- Including the cities of Jamestown and Olean 805 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 6 inches in the most persistent lake snows. The majority of the snow will occur tonight across the Chautauqua Ridge and over the higher terrain of northern Cattaraugus county. * WHERE...Chautauqua and Cattaraugus counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ008-190930- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 805 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur late tonight on the southern Tug Hill Plateau. * WHERE...Lewis county. Greatest snow amounts over the southern portion of the Tug Hill. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning 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. && $$ NYZ006-190930- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Oswego- Including the city of Oswego 805 PM EST Thu Nov 18 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST FRIDAY... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur over the southern Tug Hill Plateau. * WHERE...Oswego county. Greatest snow amounts in far eastern Oswego County. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$
859 WWUS41 KBUF 190832 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 332 AM EST Fri Nov 19 2021 NYZ012-085-191645- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Wyoming-Southern Erie- Including the cities of Warsaw, Orchard Park, and Springville 332 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Lake effect snow expected. Total snow accumulations of 3 to 5 inches in the most persistent lake snows. The majority of the snow will occur tonight inland across the Boston Hills and the higher terrain of Wyoming county. * WHERE...Wyoming and Southern Erie counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute 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. && $$ NYZ019-020-191645- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Chautauqua-Cattaraugus- Including the cities of Jamestown and Olean 332 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 6 inches in the most persistent lake snows. The majority of the snow will occur tonight across the Chautauqua Ridge and over the higher terrain of northern Cattaraugus county. * WHERE...Chautauqua and Cattaraugus counties. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Plan on snow covered and slippery road conditions and poor visibility at times. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$ NYZ008-191500- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 332 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur late tonight on the southern Tug Hill Plateau. * WHERE...Lewis county. Greatest snow amounts over the southern portion of the Tug Hill. * WHEN...From 7 PM this evening to 10 AM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning 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. && $$ NYZ006-191645- /O.CON.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Oswego- Including the city of Oswego 332 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Lake effect snow expected. Total snow accumulations of 4 to 8 inches in the most persistent lake snows. The majority of the snow will occur over the southern Tug Hill Plateau. * WHERE...Oswego county. Greatest snow amounts in far eastern Oswego County. * WHEN...From 7 PM this evening to 1 PM EST Friday. * IMPACTS...Travel could be very difficult with snow covered roads and poor visibility. The hazardous conditions could impact the morning commute on Friday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Lake effect snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media. && $$
617 WWUS41 KBUF 191423 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 923 AM EST Fri Nov 19 2021 NYZ006-012-019-020-085-191530- /O.CAN.KBUF.WW.Y.0021.000000T0000Z-211119T1800Z/ Oswego-Wyoming-Chautauqua-Cattaraugus-Southern Erie- Including the cities of Oswego, Warsaw, Jamestown, Olean, Orchard Park, and Springville 923 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Temperatures have risen above freezing in almost all areas this morning. While snow showers will continue in some areas, impacts and additional accumulation will be minimal. $$ NYZ008-191530- /O.CAN.KBUF.WW.Y.0021.000000T0000Z-211119T1500Z/ Lewis- Including the city of Lowville 923 AM EST Fri Nov 19 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow showers have moved south of the area. The advisory has thus been cancelled. $$
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 18, 5:34 PM EST | Gale Warning | BUF | 5 hr |
Nearby
Winter Weather Advisories in New York, 2021Every winter weather advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.