Alert archive / New York / Winter Storm Warnings in 2021
Winter Storm Warning 4, NWS Buffalo, NY
NWS Buffalo, NY issued this winter storm warning at Mar 31, 2021, 3:57 AM EDT for Jefferson County, Lewis County, Oswego County, New York. It took effect at Mar 31, 2021, 11:00 PM EDT. It was in force for . No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 31, 2021, 3:57 AM EDT (07:57 UTC)
- In effect from
- Mar 31, 2021, 11:00 PM EDT
- Expired
- Mar 31, 2021, 7:30 PM EDT
- In force
- Issued by
- NWS Buffalo, NY
Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY
The radar
The Ft Drum radar (KTYX), 18 km from the middle of the area, began a volume at 07:58 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 00:00Z, 8.0 hours before the alert went out and 205 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
- 2165 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 198 m²/s²
- 0-3 km storm-relative helicity
- 403 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
634 WWUS41 KBUF 310757 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 357 AM EDT Wed Mar 31 2021 NYZ006>008-311700- /O.UPG.KBUF.WS.A.0007.210401T0300Z-210402T0600Z/ /O.NEW.KBUF.WS.W.0004.210401T0300Z-210401T2100Z/ Oswego-Jefferson-Lewis- Including the cities of Oswego, Watertown, and Lowville 357 AM EDT Wed Mar 31 2021 ...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...The Eastern Lake Ontario Region. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Widespread accumulating snow will create dangerous travel conditions. Submit snow reports through our website or social media. && $$ NYZ004-005-014-311700- /O.UPG.KBUF.WS.A.0007.210401T0300Z-210402T0000Z/ /O.NEW.KBUF.WW.Y.0016.210401T0300Z-210401T2100Z/ Wayne-Northern Cayuga-Ontario- Including the cities of Newark, Fair Haven, and Canandaigua 357 AM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. * WHERE...Wayne, Northern Cayuga, and Ontario counties. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Periods of snow will result in snow covered roads and limited visibilities. Slow down and use caution while driving. Submit snow reports through our website or social media. && $$ NYZ003-013-021-311700- /O.UPG.KBUF.WS.A.0007.210401T0300Z-210402T0000Z/ /O.NEW.KBUF.WW.Y.0016.210401T0300Z-210401T2100Z/ Monroe-Livingston-Allegany- Including the cities of Rochester, Geneseo, and Wellsville 357 AM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. * WHERE...Monroe, Livingston, and Allegany counties. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening 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. && $$ Apffel
2 follow-up statements
157 WWUS41 KBUF 311653 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 1253 PM EDT Wed Mar 31 2021 NYZ006>008-010300- /O.CON.KBUF.WS.W.0004.210401T0300Z-210401T2100Z/ Oswego-Jefferson-Lewis- Including the cities of Oswego, Watertown, and Lowville 1253 PM EDT Wed Mar 31 2021 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Heavy snow expected. Total snow accumulations of 5 to 10 inches. * WHERE...The Eastern Lake Ontario Region. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Widespread accumulating snow will create dangerous travel conditions. Submit snow reports through our website or social media. && $$ NYZ004-005-014-010300- /O.CON.KBUF.WW.Y.0016.210401T0300Z-210401T2100Z/ Wayne-Northern Cayuga-Ontario- Including the cities of Newark, Fair Haven, and Canandaigua 1253 PM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. * WHERE...Wayne, Northern Cayuga, and Ontario counties. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Periods of snow will result in snow covered roads and limited visibilities. Slow down and use caution while driving. Submit snow reports through our website or social media. && $$ NYZ003-013-021-010300- /O.CON.KBUF.WW.Y.0016.210401T0300Z-210401T2100Z/ Monroe-Livingston-Allegany- Including the cities of Rochester, Geneseo, and Wellsville 1253 PM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 5 PM EDT THURSDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. * WHERE...Monroe, Livingston, and Allegany counties. * WHEN...From 11 PM this evening to 5 PM EDT Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Periods of snow will result in snow covered roads and limited visibilities. Slow down and use caution while driving. Submit snow reports through our website or social media. && $$ JLA
758 WWUS41 KBUF 312330 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 730 PM EDT Wed Mar 31 2021 NYZ008-010730- /O.CAN.KBUF.WS.W.0004.210401T0300Z-210401T2100Z/ /O.NEW.KBUF.WW.Y.0017.210401T0600Z-210401T1800Z/ Lewis- Including the city of Lowville 730 PM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 AM TO 2 PM EDT THURSDAY... ...WINTER STORM WARNING IS CANCELLED... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches, greatest across higher terrain. * WHERE...Lewis county. Greatest snow amounts across the higher terrain of the Tug Hill and western foothills of the Adirondacks. * WHEN...From 2 AM to 2 PM EDT Thursday. * IMPACTS...Plan on slushy and slippery road conditions. The hazardous conditions could impact the Thursday 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. && $$ NYZ006-007-010030- /O.CAN.KBUF.WS.W.0004.210401T0300Z-210401T2100Z/ Oswego-Jefferson- Including the cities of Oswego and Watertown 730 PM EDT Wed Mar 31 2021 ...WINTER STORM WARNING IS CANCELLED... The storm system moving northward along the east coast is now expected to be farther east and weaker, resulting in far less snow than originally anticipated. Accumulations of 1-3 inches are possible late tonight and Thursday, mainly across the higher terrain east of Interstate 81. $$ NYZ003>005-013-014-021-010030- /O.CAN.KBUF.WW.Y.0016.210401T0300Z-210401T2100Z/ Monroe-Wayne-Northern Cayuga-Livingston-Ontario-Allegany- Including the cities of Rochester, Newark, Fair Haven, Geneseo, Canandaigua, and Wellsville 730 PM EDT Wed Mar 31 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... The storm system moving northward along the east coast is now expected to be farther east and weaker, resulting in far less snow than originally anticipated. Accumulations of 1-2 inches are possible late tonight and Thursday, mainly across the higher terrain of the interior Southern Tier and western Finger Lakes. $$ Hitchcock
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 3:57 AM EDT | Winter Weather Advisory | BUF | Allegany, Cayuga, Livingston, Monroe, Ontario, Wayne | 16 hr |
| Mar 31, 10:10 AM EDT | Small Craft Advisory | BUF | 63 hr | |
| Mar 31, 7:30 PM EDT | Winter Weather Advisory | BUF | Lewis | 13 hr |
Nearby
Winter Storm Warnings in New York, 2021Every winter storm warning 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.