Alert archive / New York / Lake Effect Snow Warnings in 2021
Lake Effect Snow Warning 5, NWS Buffalo, NY
NWS Buffalo, NY issued this lake effect snow warning at Jan 23, 2021, 12:25 AM EST for Cayuga County, Monroe County, Wayne County, New York. It was in force for 10 hr. 21 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
- Jan 23, 2021, 12:25 AM EST (05:25 UTC)
- Expired
- Jan 23, 2021, 9:59 AM EST
- In force
- 10 hr
- Issued by
- NWS Buffalo, NY
Counties Cayuga County, NY, Monroe County, NY, Wayne County, NY
The radar
The Binghamton radar (KBGM), 132 km from the middle of the area, began a volume at 05:30 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 |
|---|---|---|---|
| Jan 23, 12:30 AM EST | SNOW 8.5 | 4 Ne Irondequoit, NY | |
| Jan 23, 1:00 AM EST | SNOW 9 | 4 Nw Webster, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 5:20 AM EST | SNOW 6.5 | 5 Wnw Cato, NY | REPORTED IN VICTORY, NY. |
| Jan 23, 6:00 AM EST | SNOW 1.6 | 2 Ese Wyckoff, NY | COCORAHS STATION NY-CY-8 AUBURN 8.3 SSE. |
| Jan 23, 6:13 AM EST | SNOW 8 | Savannah, NY | |
| Jan 23, 6:54 AM EST | SNOW 4.5 | 1 Wsw Palmyra, NY | COCORAHS STATION NY-WN-18 MACEDON 2.6 ESE. |
| Jan 23, 7:00 AM EST | SNOW 4.8 | 1 S Greece, NY | COCORAHS STATION NY-MR-23 ROCHESTER 5.0 WNW. |
| Jan 23, 7:00 AM EST | SNOW 5.6 | Rochester Airport, NY | |
| Jan 23, 7:00 AM EST | SNOW 6.5 | 4 Nne Webster, NY | COCORAHS STATION NY-MR-70 WEBSTER 4.0 NNE. |
| Jan 23, 7:00 AM EST | SNOW 6.6 | 2 Sw Walworth, NY | COCORAHS STATION NY-WN-10 WALWORTH 1.7 SW. |
| Jan 23, 8:00 AM EST | SNOW 3.6 | Scottsville, NY | COCORAHS STATION NY-MR-65 SCOTTSVILLE 0.4 NW. |
| Jan 23, 8:00 AM EST | SNOW 6 | 2 E Penfield, NY | |
| Jan 23, 8:10 AM EST | SNOW 10 | Marion, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 8:15 AM EST | SNOW 7.3 | 2 Nw Palmyra, NY | COCORAHS STATION NY-WN-6 PALMYRA 1.6 NW. |
| Jan 23, 8:24 AM EST | SNOW 7 | Ontario, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 8:25 AM EST | SNOW 6.5 | Newark, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 8:26 AM EST | SNOW 5 | Fairport, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 8:28 AM EST | SNOW 9.5 | 1 N Ontario, NY | |
| Jan 23, 9:00 AM EST | SNOW 6.9 | 1 Wnw Brockport, NY | CO-OP OBSERVER STATION BRKN6 BROCKPORT. |
| Jan 23, 9:04 AM EST | SNOW 9 | 3 Nne Webster, NY | SOCIAL MEDIA REPORT. |
| Jan 23, 10:00 AM EST | SNOW 6.5 | Webster, NY | SOCIAL MEDIA REPORT. |
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 00:00Z, 5.4 hours before the alert went out and 134 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
- 823 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
789
WWUS41 KBUF 230525
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
1225 AM EST Sat Jan 23 2021
NYZ003>005-231400-
/O.UPG.KBUF.WW.Y.0005.000000T0000Z-210123T1800Z/
/O.NEW.KBUF.LE.W.0005.210123T0525Z-210123T1800Z/
Monroe-Wayne-Northern Cayuga-
Including the cities of Rochester, Newark, and Fair Haven
1225 AM EST Sat Jan 23 2021
...LAKE EFFECT SNOW WARNING IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Heavy lake effect snow. Additional snow accumulations of
3 to 6 inches, with storm total accumulations of 8 to 12 inches
in the most persistent snows. Winds gusting as high as 30 mph.
* WHERE...Monroe, Wayne, and Northern Cayuga counties. Heavy snow
will be localized, occurring in narrow bands.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Plan on slippery roads and difficult travel conditions.
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...4327 7681 4333 7738 4329 7744 4331 7765
4338 7794 4314 7768 4307 7736 4301 7680 4302 7650
4318 7647
TIME Y21M01D23T0500Z-Y21M01D23T1000Z
COORD...4313 7648 4318 7673 4321 7706 4318 7722
4318 7745 4310 7748 4306 7709 4304 7709 4303 7680
4302 7650
TIME Y21M01D23T1000Z-Y21M01D23T1800Z
$$
NYZ002-231400-
/O.CON.KBUF.WW.Y.0005.000000T0000Z-210123T1800Z/
Orleans-
Including the city of Medina
1225 AM EST Sat Jan 23 2021
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Lake effect snow. Additional snow accumulations of 1 to
3 inches in the most persistent lake snows.
* WHERE...Orleans county.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.
Submit snow reports through our website or social media.
&&
$$
Apffel2 follow-up statements
090
WWUS41 KBUF 230928
WSWBUF
URGENT - WINTER WEATHER MESSAGE
National Weather Service Buffalo NY
428 AM EST Sat Jan 23 2021
NYZ003>005-231730-
/O.CON.KBUF.LE.W.0005.000000T0000Z-210123T1800Z/
Monroe-Wayne-Northern Cayuga-
Including the cities of Rochester, Newark, and Fair Haven
428 AM EST Sat Jan 23 2021
...LAKE EFFECT SNOW WARNING REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Heavy lake effect snow. Additional snow accumulations of
1 to 3 inches in the most persistent lake snows. Winds gusting
as high as 30 mph.
* WHERE...Monroe, Wayne, and Northern Cayuga counties. Heavy snow
will be localized, occurring in narrow bands.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Plan on slippery road conditions. Areas of blowing
snow could also reduce visibility.
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...4327 7681 4333 7738 4329 7744 4331 7765
4338 7794 4314 7768 4307 7736 4301 7680 4302 7650
4318 7647
TIME Y21M01D23T0500Z-Y21M01D23T1000Z
COORD...4313 7648 4318 7673 4321 7706 4318 7722
4318 7745 4310 7748 4306 7709 4304 7709 4303 7680
4302 7650
TIME Y21M01D23T1000Z-Y21M01D23T1800Z
$$
NYZ002-231730-
/O.CON.KBUF.WW.Y.0005.000000T0000Z-210123T1800Z/
Orleans-
Including the city of Medina
428 AM EST Sat Jan 23 2021
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
* WHAT...Lake effect snow. Additional snow accumulations of 1 to
2 inches in the most persistent lake snows.
* WHERE...Orleans county.
* WHEN...Until 1 PM EST this afternoon.
* IMPACTS...Plan on slippery road conditions. Areas of blowing
snow could also reduce visibility.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Lake effect snow will fall in relatively narrow bands. If
traveling, be prepared for rapidly changing road conditions and
visibilities.
Submit snow reports through our website or social media.
&&
$$
Apffel152 WWUS41 KBUF 231459 WSWBUF URGENT - WINTER WEATHER MESSAGE National Weather Service Buffalo NY 959 AM EST Sat Jan 23 2021 NYZ003>005-231600- /O.CAN.KBUF.LE.W.0005.000000T0000Z-210123T1800Z/ Monroe-Wayne-Northern Cayuga- Including the cities of Rochester, Newark, and Fair Haven 959 AM EST Sat Jan 23 2021 ...LAKE EFFECT SNOW WARNING IS CANCELLED... Lake effect snow has become less organized and diminished in intensity. Additional accumulations will be limited to a spotty 1 to 3 inches through the rest of today. $$ NYZ002-231600- /O.CAN.KBUF.WW.Y.0005.000000T0000Z-210123T1800Z/ Orleans- Including the city of Medina 959 AM EST Sat Jan 23 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Lake effect snow has become less organized and diminished in intensity. Additional accumulations will be limited to a spotty 1 to 2 inches through the rest of today. $$ Hitchcock
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 6:07 AM EST | Special Weather Statement | BUF | Genesee | 53 min |
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.