Alert archive / New York / Lake Effect Snow Warnings in 2021
Lake Effect Snow Warning 7, NWS Buffalo, NY
NWS Buffalo, NY issued this lake effect snow warning at Feb 7, 2021, 12:46 PM EST for Cayuga County, Oswego County, New York. It took effect at Feb 7, 2021, 6:00 PM EST. It was in force for 15 hr. 8 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 7, 2021, 12:46 PM EST (17:46 UTC)
- In effect from
- Feb 7, 2021, 6:00 PM EST
- Expired
- Feb 8, 2021, 9:07 AM EST
- In force
- 15 hr
- Issued by
- NWS Buffalo, NY
Counties Cayuga County, NY, Oswego County, NY
The radar
The Ft Drum radar (KTYX), 81 km from the middle of the area, began a volume at 17:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 7, 9:15 PM EST | SNOW 5 | 4 Sw Lacona, NY | |
| Feb 8, 3:15 AM EST | SNOW 6.9 | 2 Wsw Oswego, NY | |
| Feb 8, 6:30 AM EST | SNOW 4.1 | 2 Wsw Oswego, NY | |
| Feb 8, 6:30 AM EST | SNOW 12 | New Haven, NY | |
| Feb 8, 7:00 AM EST | SNOW 7 | 7 Ne Orwell, NY | CO-OP OBSERVER STATION RDFN6 REDFIELD 8N. |
| Feb 8, 7:00 AM EST | SNOW 9.5 | 2 Sw Mexico, NY | CO-OP OBSERVER STATION MXON6 MEXICO 2SW. |
| Feb 8, 8:00 AM EST | SNOW 4.5 | Minetto, NY | COCORAHS STATION NY-OS-15 MINETTO 0.1 SE. |
| Feb 8, 9:00 AM EST | SNOW 8 | 4 Wsw New Haven, NY | SOCIAL MEDIA REPORT FROM SCRIBA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.8 hours before the alert went out and 191 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
- 887 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
415
WWUS41 KBUF 071746
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1246 PM EST Sun Feb 7 2021
NYZ005-006-080200-
/O.UPG.KBUF.WW.Y.0011.210207T2100Z-210208T1800Z/
/O.NEW.KBUF.LE.W.0007.210207T2300Z-210208T1800Z/
Northern Cayuga-Oswego-
Including the cities of Fair Haven and Oswego
1246 PM EST Sun Feb 7 2021
...LAKE EFFECT SNOW WARNING IN EFFECT FROM 6 PM THIS EVENING TO
1 PM EST MONDAY...
* WHAT...Heavy lake effect snow expected. Total snow
accumulations of 7 to 10 inches in the most persistent lake
snows.
* WHERE...Northern Cayuga and Oswego counties. Greatest
accumulations expected in central and southern Oswego County and
far northern Cayuga County.
* WHEN...From 6 PM this evening to 1 PM EST Monday.
* IMPACTS...Travel will be very difficult at times with deep snow
cover on roads and very poor visibility. The hazardous
conditions could impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy 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.
&&
Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4363 7579 4367 7595 4365 7620 4355 7625
4356 7640 4351 7650 4343 7640 4340 7613 4340 7586
4344 7581
TIME Y21M02D07T2300Z-Y21M02D08T0600Z
COORD...4346 7603 4347 7615 4349 7614 4353 7650
4336 7680 4331 7678 4328 7669 4324 7622 4328 7619
4326 7606
TIME Y21M02D08T0600Z-Y21M02D08T1200Z
COORD...4353 7614 4359 7625 4356 7643 4349 7656
4343 7667 4339 7667 4339 7640 4339 7625 4343 7622
4343 7616
TIME Y21M02D08T1200Z-Y21M02D08T1800Z
$$
NYZ004-080200-
/O.EXT.KBUF.WW.Y.0011.210208T0300Z-210208T1500Z/
Wayne-
Including the city of Newark
1246 PM EST Sun Feb 7 2021
...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING
TO 10 AM EST MONDAY...
* WHAT...Lake effect snow expected. Total snow accumulations of
3 to 6 inches in the most persistent lake snows.
* WHERE...Wayne county. Most of the lake effect snow will fall in
extreme northeast Wayne County north of Wolcott.
* WHEN...From 10 PM this evening to 10 AM EST Monday.
* IMPACTS...Plan on snow covered and slippery road conditions with
reduced visibility at times. The hazardous conditions could
impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.
Submit snow reports through our website or social media.
&&
$$
Hitchcock4 follow-up statements
743
WWUS41 KBUF 072344
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
644 PM EST Sun Feb 7 2021
NYZ005-006-080745-
/O.CON.KBUF.LE.W.0007.000000T0000Z-210208T1800Z/
Northern Cayuga-Oswego-
Including the cities of Fair Haven and Oswego
644 PM EST Sun Feb 7 2021
...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 1 PM EST
MONDAY...
* WHAT...Heavy lake effect snow. Total snow accumulations of 7 to
10 inches in the most persistent lake snows.
* WHERE...Northern Cayuga and Oswego counties. Greatest
accumulations expected in central and southern Oswego County and
far northern Cayuga County.
* WHEN...Until 1 PM EST Monday.
* IMPACTS...Travel will be very difficult at times with deep
snow cover on roads and very poor visibility. The hazardous
conditions could impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy 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.
&&
Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4363 7579 4367 7595 4365 7620 4355 7625
4356 7640 4351 7650 4343 7640 4340 7613 4340 7586
4344 7581
TIME Y21M02D07T2300Z-Y21M02D08T0600Z
COORD...4346 7603 4347 7615 4349 7614 4353 7650
4336 7680 4331 7678 4328 7669 4324 7622 4328 7619
4326 7606
TIME Y21M02D08T0600Z-Y21M02D08T1200Z
COORD...4353 7614 4359 7625 4356 7643 4349 7656
4343 7667 4339 7667 4339 7640 4339 7625 4343 7622
4343 7616
TIME Y21M02D08T1200Z-Y21M02D08T1800Z
$$
NYZ004-080745-
/O.CON.KBUF.WW.Y.0011.210208T0300Z-210208T1500Z/
Wayne-
Including the city of Newark
644 PM EST Sun Feb 7 2021
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS
EVENING TO 10 AM EST MONDAY...
* WHAT...Lake effect snow expected. Total snow accumulations of 3
to 6 inches in the most persistent lake snows.
* WHERE...Wayne county. Most of the lake effect snow will fall in
extreme northeast Wayne County north of Wolcott.
* WHEN...From 10 PM this evening to 10 AM EST Monday.
* IMPACTS...Plan on snow covered and slippery road conditions
with reduced visibility at times. The hazardous conditions
could impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.
Submit snow reports through our website or social media.
&&
$$
JLA840
WWUS41 KBUF 080245
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
945 PM EST Sun Feb 7 2021
NYZ005-006-081045-
/O.CON.KBUF.LE.W.0007.000000T0000Z-210208T1800Z/
Northern Cayuga-Oswego-
Including the cities of Fair Haven and Oswego
945 PM EST Sun Feb 7 2021
...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 1 PM EST
MONDAY...
* WHAT...Heavy lake effect snow. Total snow accumulations of 7 to
10 inches in the most persistent lake snows. Greatest
additional accumulations expected in central and southern Oswego
County and far northern Cayuga County.
* WHERE...Northern Cayuga and Oswego counties.
* WHEN...Until 1 PM EST Monday.
* IMPACTS...Travel will be very difficult at times with deep
snow cover on roads and very poor visibility. The hazardous
conditions could impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy 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.
&&
Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4363 7579 4367 7595 4365 7620 4355 7625
4356 7640 4351 7650 4343 7640 4340 7613 4340 7586
4344 7581
TIME Y21M02D07T2300Z-Y21M02D08T0600Z
COORD...4346 7603 4347 7615 4349 7614 4353 7650
4336 7680 4331 7678 4328 7669 4324 7622 4328 7619
4326 7606
TIME Y21M02D08T0600Z-Y21M02D08T1200Z
COORD...4353 7614 4359 7625 4356 7643 4349 7656
4343 7667 4339 7667 4339 7640 4339 7625 4343 7622
4343 7616
TIME Y21M02D08T1200Z-Y21M02D08T1800Z
$$
NYZ004-081045-
/O.CON.KBUF.WW.Y.0011.210208T0300Z-210208T1500Z/
Wayne-
Including the city of Newark
945 PM EST Sun Feb 7 2021
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST
MONDAY...
* WHAT...Lake effect snow expected. Total snow accumulations of
3 to 5 inches in the most persistent lake snows.
* WHERE...Wayne county. Most of the lake effect snow will fall in
extreme northeast Wayne County north of Wolcott.
* WHEN...Until 10 AM EST Monday.
* IMPACTS...Plan on snow covered and slippery road conditions
with reduced visibility at times. The hazardous conditions
could impact the Monday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.
Submit snow reports through our website or social media.
&&
$$
JLA305
WWUS41 KBUF 080851
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
351 AM EST Mon Feb 8 2021
NYZ005-081000-
/O.CAN.KBUF.LE.W.0007.000000T0000Z-210208T1800Z/
Northern Cayuga-
Including the city of Fair Haven
351 AM EST Mon Feb 8 2021
...LAKE EFFECT SNOW WARNING IS CANCELLED...
The heaviest lake snows have moved north of the area.
$$
NYZ004-081000-
/O.CAN.KBUF.WW.Y.0011.000000T0000Z-210208T1500Z/
Wayne-
Including the city of Newark
351 AM EST Mon Feb 8 2021
...WINTER WEATHER ADVISORY IS CANCELLED...
Lake effect snow has moved north of the area.
$$
NYZ006-081700-
/O.CON.KBUF.LE.W.0007.000000T0000Z-210208T1800Z/
Oswego-
Including the city of Oswego
351 AM EST Mon Feb 8 2021
...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Heavy lake effect snow. Additional snow accumulations
of 4 to 7 inches in the most persistent lake snows.
* WHERE...Oswego county.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact this morning's commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Heavy 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.
&&
Experimental content below...do not use operationally
Please see below links for more information on this experiment
http://www.weather.gov/buf/polygon_pdd
http://www.nws.noaa.gov/os/notification/
pns15lake_effect_snowaaa.htm
To view the experimental polygons please see:
http://www.weather.gov/buf/lespolygon
COORD...4342 7589 4353 7611 4354 7638 4352 7644
4343 7661 4334 7662 4331 7648 4328 7620 4330 7620
4334 7593
TIME Y21M02D08T0600Z-Y21M02D08T1200Z
COORD...4363 7581 4370 7580 4370 7601 4363 7620
4354 7622 4348 7651 4343 7658 4352 7623 4340 7634
4349 7614
TIME Y21M02D08T1200Z-Y21M02D08T1800Z
$$
TMA181 WWUS41 KBUF 081407 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 907 AM EST Mon Feb 8 2021 NYZ006-081515- /O.CAN.KBUF.LE.W.0007.000000T0000Z-210208T1800Z/ Oswego- Including the city of Oswego 907 AM EST Mon Feb 8 2021 ...LAKE EFFECT SNOW WARNING IS CANCELLED... Lake effect snow has weakened and drifted north this morning. Additional accumulations will be minor. $$ Hitchcock
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 7, 3:36 AM EST | Winter Weather Advisory | BUF | Cayuga, Oswego, Wayne | 24 hr |
Nearby
Lake Effect Snow Warnings in New York, 2021Every lake effect snow 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.