Lake-Effect Snow, Wyoming
- When
- January 9, 2:00 AM EST to January 10, 3:00 PM EST
- Where
- Wyoming forecast zone
- Reported by
- COOP Observer
- Coordinates
- 42.702, -78.224 (the zone’s center; the record gives no point)
Winter Storm and Lake-Effect Snow in New York, January 9 to 10, 2019
A cold front crossed the region and pushed a milder air mass that had resided across the area eastward, allowing for wintry weather to return. Temperatures behind the cold front at 850 hPa dropped to -12 to -14C over the open waters of the lakes that were around -3C.
Where it happened
Every event with a place to put it; 9 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 9
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS BUF wrote it up.
A cold front crossed the region and pushed a milder air mass that had resided across the area eastward, allowing for wintry weather to return. Temperatures behind the cold front at 850 hPa dropped to -12 to -14C over the open waters of the lakes that were around -3C. Layer moisture was sufficient for the formation of lake snow bands, which helped to overcome the shorter wind fetch of northwesterly flow. Snow along the passing cold front did not manage to account for much, however lake effect snow bands behind the front, with upstream connections to the upper Great Lakes prompted warnings downwind of Lake Erie and Lake Ontario. While northwest upslope flow resulted in largely synoptic snows over the North Country, snows from Oswego County to the south and west were largely lake effect. Snow totals included 13.5 inches in Cattaraugus, 9.5 inches in Sardinia, 22.5 inches in Celoron, 10 inches in Osceola, 9 inches in Port Byron, 7.4 inches in Macedon, 16.6 inches in Redfield, 7.6 inches in Wyoming, and 10 inches in West Carthage.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Buffalo, NY wrote its last area forecast discussion before the first event at Jan 8, 6:33 PM EST, 7 hours 27 minutes earlier.
Area forecast discussion, Jan 8, 6:33 PM EST, 7 hours 27 minutes before
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</html>Hazardous weather outlook, Jan 8, 2:42 PM EST, 11 hours 18 minutes before
Hazardous Weather Outlook National Weather Service Buffalo NY 242 PM EST Tue Jan 8 2019 NYZ021-091945- Allegany- 242 PM EST Tue Jan 8 2019 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM WEDNESDAY TO 6 AM EST THURSDAY... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. The probability of widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ001-010-011-013-014-091945- Niagara-Northern Erie-Genesee-Livingston-Ontario- 242 PM EST Tue Jan 8 2019 This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ005-091945- Northern Cayuga- 242 PM EST Tue Jan 8 2019 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE THURSDAY NIGHT... This Hazardous Weather Outlook is for portions of central New York. .DAY ONE...This afternoon and tonight. The probability of widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Watch. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ012-020-091945- Wyoming-Cattaraugus- 242 PM EST Tue Jan 8 2019 ...WINTER STORM WARNING IN EFFECT FROM 1 AM WEDNESDAY TO 6 PM EST THURSDAY... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ006>008-091945- Oswego-Jefferson-Lewis- 242 PM EST Tue Jan 8 2019 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY AFTERNOON... This Hazardous Weather Outlook is for portions of central New York. .DAY ONE...This afternoon and tonight. The probability of widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Watch. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf LEZ020-040-041-LOZ030-042>045-062>065-091945- Upper Niagara River and Buffalo Harbor- Lake Erie nearshore waters from Ripley to Dunkirk- Lake Erie nearshore waters from Dunkirk to Buffalo- Lower Niagara River- Lake Ontario nearshore waters from the Niagara River to Hamlin Beach- Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay- Lake Ontario nearshore waters from Sodus Bay to Mexico Bay- Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence River- Lake Ontario open waters from the Niagara River to Hamlin Beach- Lake Ontario open waters from Hamlin Beach to Sodus Bay- Lake Ontario open waters from Sodus Bay to Mexico Bay- Lake Ontario open waters from Mexico Bay to the Saint Lawrence River- 242 PM EST Tue Jan 8 2019 This Hazardous Weather Outlook is for portions of Lake Erie and Lake Ontario. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf SLZ022-024-091945- Saint Lawrence River from Cape Vincent to Ogdensburg- Saint Lawrence River from Ogdensburg to Saint Regis- 242 PM EST Tue Jan 8 2019 This Hazardous Weather Outlook is for the New York waters of the Saint Lawrence River. .DAY ONE...This afternoon and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ019-085-091945- Chautauqua-Southern Erie- 242 PM EST Tue Jan 8 2019 ...WINTER STORM WARNING IN EFFECT FROM 1 AM WEDNESDAY TO 6 PM EST THURSDAY... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ002-003-091945- Orleans-Monroe- 242 PM EST Tue Jan 8 2019 This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. The probability of widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. West winds will increase Wednesday morning and gusts up to 45 mph are possible along the Lake Ontario shoreline through Wednesday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf NYZ004-091945- Wayne- 242 PM EST Tue Jan 8 2019 ...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE THURSDAY NIGHT... This Hazardous Weather Outlook is for portions of western New York. .DAY ONE...This afternoon and tonight. The probability of widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Watch. West winds will increase Wednesday morning and gusts up to 45 mph are possible along the Lake Ontario shoreline through Wednesday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service office in Buffalo can be found on the internet at http://www.weather.gov/buf
The radar
The national radar mosaic for the moment the first event began.
Event by event
7 lake-effect snow, 2 winter storm. Local standard time, as filed.
Lake-Effect Snow, Cattaraugus
- When
- January 9, 2:00 AM EST to January 10, 3:00 PM EST
- Where
- Cattaraugus forecast zone
- Reported by
- COOP Observer
- Coordinates
- 42.249, -78.679 (the zone’s center; the record gives no point)
Lake-Effect Snow, Southern Erie
- When
- January 9, 2:00 AM EST to January 10, 3:00 PM EST
- Where
- Southern Erie forecast zone
- Reported by
- Trained Spotter
- Coordinates
- 42.758, -78.780 (the zone’s center; the record gives no point)
Lake-Effect Snow, Chautauqua
- When
- January 9, 2:00 AM EST to January 10, 3:00 PM EST
- Where
- Chautauqua forecast zone
- Reported by
- CoCoRaHS
- Coordinates
- 42.303, -79.406 (the zone’s center; the record gives no point)
Winter Storm, Jefferson
- When
- January 9, 3:39 AM EST to January 10, 5:00 AM EST
- Where
- Jefferson forecast zone
- Reported by
- COOP Observer
- Coordinates
- 43.999, -76.052 (the zone’s center; the record gives no point)
Winter Storm, Lewis
- When
- January 9, 3:39 AM EST to January 10, 5:00 AM EST
- Where
- Lewis forecast zone
- Reported by
- COOP Observer
- Coordinates
- 43.785, -75.449 (the zone’s center; the record gives no point)
Lake-Effect Snow, Oswego
- When
- January 9, 3:39 AM EST to January 10, 3:00 PM EST
- Where
- Oswego forecast zone
- Reported by
- COOP Observer
- Coordinates
- 43.464, -76.209 (the zone’s center; the record gives no point)
Lake-Effect Snow, Northern Cayuga
- When
- January 9, 4:00 PM EST to January 10, 3:00 PM EST
- Where
- Northern Cayuga forecast zone
- Reported by
- Social Media
- Coordinates
- 43.010, -76.574 (the zone’s center; the record gives no point)
Lake-Effect Snow, Wayne
- When
- January 9, 4:00 PM EST to January 10, 3:00 PM EST
- Where
- Wayne forecast zone
- Reported by
- CoCoRaHS
- Coordinates
- 43.066, -76.978 (the zone’s center; the record gives no point)
What these are
- Lake-Effect Snow
- Heavy snow in bands downwind of a large lake as cold air crosses warmer water.
- Winter Storm
- A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Surf in California, January 9 to 10, 2019
- Avalanche in Wyoming, January 9, 2019
- Lake-Effect Snow in Pennsylvania, January 9 to 11, 2019
- Strong Wind in North Carolina, January 9, 2019
- High Surf in Hawaii, January 9 to 10, 2019
- Winter Weather and Cold in New York, January 9 to 11, 2019
- Heavy Snow in New Hampshire, January 9, 2019
- Heavy Snow in Maine, January 9, 2019
- Winter Storm and Winter Weather in West Virginia, January 9 to 10, 2019
- Lake-Effect Snow in New York, January 9 to 10, 2019
- Winter Storm in Vermont, January 9 to 10, 2019
- High Wind in Alaska, January 9, 2019
More
Every storm in New York in 2019Every state in 2019This day in weather historyWarnings in New York, January 2019
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 801102, 801103, 801104, 801105, 801097, 801098, 801099, 801100, 801101.