freezing rain
###
Roads and walkways will likely become icy and slippery. Icy surfaces could be difficult to detect. There is risk of injury due to slips and falls.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 07, 2026 13:07
Until: Jan 07, 2026 16:29
freezing rain
Patchy freezing rain or freezing drizzle ending early this morning.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
###
Roads and walkways will likely become icy and slippery. Icy surfaces could be difficult to detect. There is risk of injury due to slips and falls.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 07, 2026 13:07
Until: Jan 07, 2026 16:29
Winter Weather Advisory
* WHAT...Mixed precipitation. Additional snow accumulations of a
coating to 2 inches, greatest across the higher terrain of the Tug
Hill Plateau and western Adirondacks. Additional ice accumulations
around one tenth of an inch across the Saint Lawrence Valley.
* WHERE...Jefferson and Lewis Counties.
* WHEN...Until 11 AM EST this morning.
* IMPACTS...Plan on slippery road conditions, mainly across higher
terrain and across the Thousand Islands region. The hazardous
conditions will impact the Wednesday morning commute.
From: Jan 07, 2026 05:39
Until: Jan 07, 2026 16:00
freezing rain
Freezing rain is no longer expected.
###
From: Jan 07, 2026 13:37
Until: Jan 07, 2026 14:37
Winter Storm Warning
* WHAT...Heavy lake effect snow. Additional snow accumulations 8 to
14 inches in the most persistent bands.
* WHERE...Oswego County. The greatest additional accumulations will
likely focus across the central portion of the county.
* WHEN...Until 7 PM EST this evening.
* IMPACTS...Travel will be very difficult with deep snow cover on
roads and very poor visibility.
From: Jan 03, 2026 05:58
Until: Jan 03, 2026 19:00
Winter Storm Warning
* WHAT...Heavy lake effect snow. Additional snow accumulations 8 to
12 inches in the most persistent bands.
* WHERE...Oswego County. The greatest additional accumulations will
likely focus across the central and northern portion of the county.
* WHEN...Until 7 PM EST this evening.
* IMPACTS...Travel will be very difficult with deep snow cover on
roads and very poor visibility.
From: Jan 03, 2026 08:09
Until: Jan 03, 2026 19:00
Winter Storm Warning
* WHAT...Heavy lake effect snow. Additional snow accumulations 1 to
2 feet, locally up to 3 feet. Snowfall rates of 3-5 inches per
hour possible in the most intense part of the band, lessening to
1-2 inches per hour overnight.
* WHERE...Oswego and Lewis Counties. For Lewis County, additional
snowfall will be confined to the southern portion of the county
with much lower snowfall totals.
* WHEN...Until 7 PM EST Saturday.
* IMPACTS...Whiteout conditions are expected and will make travel
treacherous and potentially life-threatening. Travel will be very
difficult to impossible. The hazardous conditions will impact
travel through the week.
From: Jan 03, 2026 00:07
Until: Jan 03, 2026 12:15
Winter Storm Warning
* WHAT...Heavy lake effect snow. Additional snow accumulations 1 to
2 feet, with localized amounts of up to 4 feet possible across
Oswego County. Snowfall rates of 3 to 5 inches per hour possible
in the most intense bands.
* WHERE...The Eastern Lake Ontario Region. The greatest additional
snow amounts will focus across Oswego County. Additional snowfall
in Jefferson County will only be across the far southern end of
the county, and in Lewis County only in the far southwest corner
of the county, with minimal amounts elsewhere.
* WHEN...Until 7 AM EST Saturday. The heaviest snowfall will be
tonight through Friday.
* IMPACTS...Travel will be very difficult to impossible with near
zero visibility and deep snow cover on roads. If you must travel,
be prepared for severe impacts and the possibility of becoming
stranded.
From: Jan 01, 2026 06:08
Until: Jan 01, 2026 19:00
snow squall
###
Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Roads and walkways will likely be difficult to navigate due to accumulating snow.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Jan 01, 2026 02:04
Until: Jan 01, 2026 18:04
snow squall
Snowsqualls expected.
What:
Local snowfall amounts of 10 to 20 cm.
Reduced visibility in heavy snow and local blowing snow.
When:
This evening.
Additional information:
Snow squalls have moved into the region from Lake Ontario. Travel along the Highway 401 corridor will be particularly hazardous.
For road conditions and other traveller information from the Ministry of Transportation, visit https://www.ontario.ca/511, https://www.twitter.com/511Ontario, or call 5-1-1.
###
Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Roads and walkways will likely be difficult to navigate due to accumulating snow.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 31, 2025 23:38
Until: Jan 01, 2026 18:04
Winter Storm Warning
* WHAT...Heavy snow. Additional snow accumulations 1 to 3 feet.
* WHERE...The Eastern Lake Ontario Region. The greatest
accumulations will be across Oswego County and the Tug Hill
Plateau.
* WHEN...Until 7 AM EST Saturday.
* IMPACTS...Travel will be very difficult with deep snow cover on
roads and very poor visibility. The hazardous conditions will
impact the Wednesday morning and evening commutes.
From: Dec 31, 2025 05:45
Until: Dec 31, 2025 18:30
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations 2 to 4 feet.
Winds gusting as high as 40 mph will create blowing and drifting
snow along with whiteout conditions at times.
* WHERE...The Eastern Lake Ontario Region.
* WHEN...Until 7 AM EST Saturday.
* IMPACTS...Whiteout conditions are expected to continue today and
will make travel treacherous. Travel will remain very difficult
with hazardous conditions from lake effect snow continuing to
impact travel through the week.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate back
north to east of Lake Ontario tonight into Wednesday. Forecast
snowfall amounts could be much higher where lake bands persist
during this long duration event.
From: Dec 30, 2025 18:16
Until: Dec 31, 2025 07:15
Winter Storm Warning
* WHAT...Heavy snow expected. Total snow accumulations 1 to 2 feet.
Winds gusting as high as 60 mph Monday decreasing to 50 mph
Tuesday creating blowing and drifting snow along with whiteout
conditions at times.
* WHERE...The Eastern Lake Ontario Region. Greatest snow
accumulation expected south of Watertown and Fort Drum.
* WHEN...From 4 PM this afternoon to 7 AM EST Saturday.
* IMPACTS...Whiteout conditions are expected starting late Monday
afternoon continuing into Tuesday and will make travel treacherous
and potentially life-threatening. Travel will remain very
difficult with hazardous conditions from lake effect snow
continuing to impact travel through the week.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario this week. Forecast
snowfall amounts could be much higher where lake bands persist
during this long duration event.
From: Dec 29, 2025 17:51
Until: Dec 30, 2025 07:00
High Wind Warning
* WHAT...Southwest winds 30 to 50 mph with gusts up to 60 mph.
* WHERE...Jefferson County.
* WHEN...Until 1 AM EST Tuesday.
* IMPACTS...Strong winds will blow down trees and power lines.
Scattered power outages are expected. Shallow rooted trees in a
saturated ground will be more susceptible to falling. Travel will
be difficult, especially for high profile vehicles.
From: Dec 29, 2025 17:56
Until: Dec 30, 2025 06:00
Wind Advisory
* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph
expected.
* WHERE...Oswego and Lewis Counties.
* WHEN...Until 4 PM EST this afternoon.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* ADDITIONAL DETAILS...The Wind Advisory will be replaced with a
Winter Storm Warning starting at 4 PM Monday.
From: Dec 29, 2025 17:56
Until: Dec 29, 2025 21:00
Winter Storm Warning
* WHAT...Total snow accumulations 2 to 3 feet and ice accumulations
around a few hundredths of an inch. Winds gusting as high as 55
mph creating blowing and drifting snow along with whiteout
conditions at times.
* WHERE...The Eastern Lake Ontario Region. Greatest snow
accumulation across the Tug Hill Plateau.
* WHEN...From 4 PM this afternoon to 7 AM EST Saturday.
* IMPACTS...Whiteout conditions are expected and will make travel
treacherous and potentially life-threatening. Travel will be very
difficult to impossible. The hazardous conditions will impact
travel through the week.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario this week. Forecast
snowfall amounts could be much higher where lake bands persist
during this long duration event. The strongest winds will be today
and tonight.
From: Dec 29, 2025 08:45
Until: Dec 29, 2025 20:45
Winter Storm Warning
* WHAT...For the Winter Weather Advisory, freezing rain expected.
Additional ice accumulations of a few hundredths of an inch. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations 2 to 3 feet. Winds gusting as high as 60 mph
creating blowing and drifting snow along with whiteout conditions
at times.
* WHERE...Jefferson county. Ice accumulation this morning far
northern part of the county and Thousand Islands. Greatest snow
accumulation expected south of Watertown and Fort Drum.
* WHEN...For the Winter Weather Advisory, until 10 AM EST this
morning. For the Winter Storm Warning, from 4 PM this afternoon to
7 AM EST Saturday.
* IMPACTS...Slippery conditions are expected this morning across far
northern Jefferson county and the Thousand Islands. Whiteout
conditions are expected starting this afternoon and will make
travel treacherous and potentially life-threatening. Travel could
be nearly impossible. The hazardous conditions will impact travel
through the week.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario this week. Forecast
snowfall amounts could be much higher where lake bands persist
during this long duration event. The strongest winds will be today
and tonight.
From: Dec 29, 2025 08:45
Until: Dec 29, 2025 20:45
Winter Weather Advisory
* WHAT...For the Winter Weather Advisory, freezing rain expected.
Additional ice accumulations of a few hundredths of an inch. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations 2 to 3 feet. Winds gusting as high as 60 mph
creating blowing and drifting snow along with whiteout conditions
at times.
* WHERE...Jefferson county. Ice accumulation this morning far
northern part of the county and Thousand Islands. Greatest snow
accumulation expected south of Watertown and Fort Drum.
* WHEN...For the Winter Weather Advisory, until 10 AM EST this
morning. For the Winter Storm Warning, from 4 PM this afternoon to
7 AM EST Saturday.
* IMPACTS...Slippery conditions are expected this morning across far
northern Jefferson county and the Thousand Islands. Whiteout
conditions are expected starting this afternoon and will make
travel treacherous and potentially life-threatening. Travel could
be nearly impossible. The hazardous conditions will impact travel
through the week.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario this week. Forecast
snowfall amounts could be much higher where lake bands persist
during this long duration event. The strongest winds will be today
and tonight.
From: Dec 29, 2025 08:45
Until: Dec 29, 2025 20:45
rainfall
Rainfall, combined with melting snow, is expected. The frozen ground has a reduced ability to absorb this rainfall.
What:
Total rain and freezing rain amounts 15 to 30 mm.
When:
Beginning Sunday afternoon and ending early Monday morning.
Additional information:
Freezing rain will begin Sunday afternoon transitioning over to rain Sunday evening. Rain and freezing rain will be heavy at times through the afternoon and evening. The rain will ease early Monday morning.
###
Water will likely pool on roads and in low-lying areas.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 27, 2025 23:20
Until: Dec 28, 2025 15:20
Winter Weather Advisory
* WHAT...For the Winter Weather Advisory, freezing rain expected.
Total ice accumulations around a tenth or two on the Tug Hill
Plateau, and up to a third of an inch through the Saint Lawrence
Valley. For the Winter Storm Watch, heavy lake effect snow
possible. Total snow accumulations over 7 inches possible in the
most persistent lake snows. Winds could gust as high as 50 mph
creating blowing and drifting snow and greatly reducing
visibilities.
* WHERE...The Eastern Lake Ontario Region. Greatest snow
accumulation expected south of Watertown and Fort Drum.
* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 10 AM
EST Monday. For the Winter Storm Watch, from Monday afternoon
through Thursday morning.
* IMPACTS...Power outages and tree damage are likely due to the ice.
Travel will be very difficult in deep snow covered roads beginning
Monday afternoon. The hazardous conditions could impact the Monday
morning and evening commutes.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario for this long duration
event.
From: Dec 27, 2025 18:12
Until: Dec 28, 2025 07:30
Winter Storm Watch
* WHAT...For the Winter Weather Advisory, freezing rain expected.
Total ice accumulations around a tenth or two on the Tug Hill
Plateau, and up to a third of an inch through the Saint Lawrence
Valley. For the Winter Storm Watch, heavy lake effect snow
possible. Total snow accumulations over 7 inches possible in the
most persistent lake snows. Winds could gust as high as 50 mph
creating blowing and drifting snow and greatly reducing
visibilities.
* WHERE...The Eastern Lake Ontario Region. Greatest snow
accumulation expected south of Watertown and Fort Drum.
* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 10 AM
EST Monday. For the Winter Storm Watch, from Monday afternoon
through Thursday morning.
* IMPACTS...Power outages and tree damage are likely due to the ice.
Travel will be very difficult in deep snow covered roads beginning
Monday afternoon. The hazardous conditions could impact the Monday
morning and evening commutes.
* ADDITIONAL DETAILS...Lake effect snow is expected oscillate
several times downwind of Lake Ontario for this long duration
event.
From: Dec 27, 2025 18:12
Until: Dec 28, 2025 07:30
weather
Freezing rain Sunday night and Monday.
What:
A long lasting period of freezing rain.
Ice accretion amounts of 10 to 15 mm.
When:
Sunday night to Monday afternoon.
Additional information:
A rapidly intensifying low pressure system is expected to track over the Great Lakes. Precipitation is expected to begin as freezing rain or ice pellets Sunday night. Freezing rain is expected to persist most of the day Monday before changing to rain showers or flurries Monday afternoon. Freezing rain may be mixed with ice pellets at times.
There remains some uncertainty regarding the track of the low pressure system and as a result exact ice accretion amounts are somewhat uncertain.
Local utility outages are possible. Travel conditions are expected to be difficult. Ice covered surfaces are likely.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 27, 2025 10:25
Until: Dec 28, 2025 02:25
weather
Significant snow possible Friday.
What:
Snowfall amounts of up to 10 cm.
When:
Friday afternoon into Friday night.
Additional information:
Snow is expected to begin near noon Friday and end from west to east through Friday evening. There is still some uncertainty regarding the track of the low pressure system, which may impact the eastern edge of the significant snowfall area.
Travel may be difficult due to the accumulating snow. Motorists should exercise caution and adjust travel plans accordingly.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 25, 2025 10:24
Until: Dec 26, 2025 10:27
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations 2 to 5 inches.
* WHERE...Jefferson and Lewis Counties. Greatest snow accumulations
expected across southern Jefferson and southern Lewis counties.
* WHEN...From 3 PM Friday to 4 AM EST Saturday.
* IMPACTS...Plan on snow covered and slippery road conditions. The
hazardous conditions will impact the Friday evening commute and
post Christmas holiday travel.
From: Dec 25, 2025 17:56
Until: Dec 26, 2025 07:00
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations 3 to 6 inches.
Snowfall rates may reach 1 to 2 inches per hour briefly.
* WHERE...Monroe, Wayne, Northern Cayuga, Oswego, and Ontario
Counties.
* WHEN...From 1 PM Friday to 4 AM EST Saturday. The majority of the
snow and travel impacts will be from mid afternoon through mid
evening Friday.
* IMPACTS...Plan on snow covered and slippery road conditions and
poor visibility. The hazardous conditions will impact the Friday
evening commute and post Christmas holiday travel.
From: Dec 25, 2025 17:56
Until: Dec 26, 2025 07:00
Winter Weather Advisory
* WHAT...Snow expected, with a chance of some patchy freezing
drizzle as well Tuesday evening. Total snow accumulations 3 to 6
inches across the higher terrain, but only 1 to 2 inches for lower
elevations.
* WHERE...The Eastern Lake Ontario Region. The greatest snow
accumulations will be limited to the higher terrain of the Tug
Hill Plateau and western foothills of the Adirondacks.
* WHEN...Until 7 AM EST Wednesday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions will impact the Tuesday evening and Wednesday morning
commutes.
From: Dec 23, 2025 19:31
Until: Dec 24, 2025 12:00
Winter Weather Advisory
* WHAT...Snow expected, with a chance of some patchy freezing
drizzle as well Tuesday evening. Total snow accumulations 3 to 5
inches across the higher terrain, but only 1 to 2 inches for lower
elevations.
* WHERE...The Eastern Lake Ontario Region. The greatest snow
accumulations will be limited to the higher terrain of the Tug
Hill Plateau and western foothills of the Adirondacks.
* WHEN...From 4 AM Tuesday to 7 AM EST Wednesday.
* IMPACTS...Plan on snow covered and slippery road conditions. The
hazardous conditions will impact the Tuesday morning and evening
commutes.
From: Dec 22, 2025 17:47
Until: Dec 23, 2025 07:00
Winter Weather Advisory
* WHAT...Lake effect snow. Additional snow accumulations 2 to 5
inches in the most persistent lake snows.
* WHERE...Northern Cayuga and Oswego Counties.
* WHEN...Until 7 AM EST Monday.
* IMPACTS...Plan on slippery road conditions.
From: Dec 21, 2025 23:26
Until: Dec 22, 2025 11:30
weather
Strong winds expected tonight.
What:
West winds gusting 80 to 90 km/h.
When:
Overnight into Sunday morning.
Additional information:
A strong cold front will pass through the region tonight. Strong west winds will develop in behind this front. Wind warnings may be issued as this event approaches.
Local utility outages are possible.
Secure loose objects.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 21, 2025 00:29
Until: Dec 21, 2025 16:01
weather
###
From: Dec 21, 2025 10:14
Until: Dec 21, 2025 11:14
Winter Weather Advisory
* WHAT...Lake effect snow. Additional snow accumulations of two
inches or less in the most persistent lake snows. Winds gusting as
high as 40 mph.
* WHERE...The Eastern Lake Ontario Region. Mainly southern
Jefferson, Oswego, and soutern Lewis counties.
* WHEN...Until 7 AM EST this morning.
* IMPACTS...Travel will be difficult. Gusty winds will lead to
reduced visibility in blowing snow.
From: Dec 20, 2025 05:49
Until: Dec 20, 2025 12:00
Winter Weather Advisory
* WHAT...Lake effect snow and blowing snow expected. Total snow
accumulations 4 to 8 inches in the most persistent lake snows.
Winds gusting as high as 45 mph.
* WHERE...The Eastern Lake Ontario Region. Mainly southern
Jefferson, northern Oswego, and western Lewis counties.
* WHEN...Until 7 AM EST Saturday.
* IMPACTS...Travel will be difficult. The hazardous conditions will
impact the Friday evening commute. Gusty winds will lead to
reduced visibility in blowing snow and down tree branches causing
isolated power outages.
* ADDITIONAL DETAILS...Temperatures will rapidly fall below freezing
this afternoon into early evening and create icy conditions.
From: Dec 19, 2025 18:12
Until: Dec 20, 2025 12:00
Winter Weather Advisory
* WHAT...Lake effect snow and blowing snow expected. Total snow
accumulations 4 to 8 inches in the most persistent lake snows.
Winds gusting as high as 45 mph.
* WHERE...The Eastern Lake Ontario Region. Mainly southern
Jefferson, northern Oswego, and western Lewis counties.
* WHEN...From 1 PM Friday to 7 AM EST Saturday.
* IMPACTS...Travel will be difficult. The hazardous conditions will
impact the Friday evening commute. Gusty winds will lead to
reduced visibility in blowing snow and down tree branches causing
isolated power outages.
* ADDITIONAL DETAILS...Minor snowfall accumulations are expected
Friday morning as early morning rain transitions to snowfall.
From: Dec 19, 2025 18:00
Until: Dec 20, 2025 12:00
Wind Advisory
* WHAT...West winds 35 to 45 mph.
* WHERE...Jefferson and Lewis Counties.
* WHEN...Until 1 AM EST Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects,
including outdoor holiday decorations. Tree limbs could be blown
down and a few power outages may result.
From: Dec 19, 2025 18:10
Until: Dec 20, 2025 06:00
Wind Advisory
* WHAT...West winds 30 to 40 mph with gusts up to 55 mph.
* WHERE...Erie, Niagara, Orleans, Monroe, Wayne, Northern Cayuga,
Oswego, Genesee, Wyoming, Livingston, Ontario, Cattaraugus, and
Allegany Counties.
* WHEN...Until 1 AM EST Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects,
including outdoor holiday decorations. Tree limbs could be blown
down and a few power outages may result.
From: Dec 19, 2025 18:10
Until: Dec 20, 2025 06:00
High Wind Warning
* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph
expected tonight. Southwest winds 20 to 30 mph with gusts to 50
mph then expected Friday and Friday night.
* WHERE...Jefferson and Lewis Counties. The strongest wind gusts
will likely be found on the northern slopes of the Tug Hill
Plateau and Black River Valley tonight. Strong gusts will be for
the entire North Country region Friday and Friday night.
* WHEN...From 7 PM this evening to 1 AM EST Saturday.
* IMPACTS...Strong winds will blow down trees and power lines.
Scattered power outages are expected. Travel will be difficult,
especially for high profile vehicles. Strong winds will blow
around unsecured outdoor holiday decorations.
From: Dec 19, 2025 00:00
Until: Dec 20, 2025 06:00
weather
Gusty winds and icy conditions today.
What:
Rapidly falling temperatures resulting in surfaces becoming icy and slippery.
Westerly winds gusting 60 to 80 km/h.
When:
Strong winds developing this morning and continuing into tonight.
Icy conditions this afternoon.
Additional information:
A strong cold front will move through the area this morning. South winds will abruptly shift to the west and strengthen this morning as the front passes. Temperatures will fall rapidly below the freezing mark this afternoon.
Travel may become difficult at times.
Local utility outages are possible.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 19, 2025 10:02
Until: Dec 20, 2025 02:02
weather
Icy conditions possible today.
What:
Rapidly falling temperatures resulting in surfaces becoming icy and slippery.
When:
This afternoon.
Additional information:
Temperatures will rapidly fall below the freezing mark this afternoon after the passage of a strong cold front.
Travel may become difficult at times.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 19, 2025 10:10
Until: Dec 20, 2025 01:15
weather
Gusty winds and rapidly falling temperatures Friday.
What:
Rapidly falling temperatures resulting in surfaces becoming icy and slippery.
Westerly to northwesterly winds gusting 60 to 80 km/h.
When:
Late Friday morning through Friday night.
Additional information:
Rain will change over to flurries late Friday morning or early Friday afternoon as temperatures rapidly fall below the freezing mark. This will be the result of a strong cold front passing through the area.
Southerly winds will abruptly become westerly Friday morning upon the passage of the cold front with gusts of 60 to 80 km/h. Winds are expected to ease through Friday night.
Roads and walkways may become icy and slippery.
Travel may become difficult at times.
Local utility outages are possible.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 19, 2025 05:02
Until: Dec 19, 2025 21:02
weather
Rapidly falling temperatures Friday.
What:
Rapidly falling temperatures resulting in surfaces becoming icy and slippery.
When:
Late Friday morning through Friday afternoon.
Additional information:
Rain will change over to flurries late Friday morning as temperatures rapidly fall below the freezing mark. This will be the result of a strong cold front passing through the area.
Roads and walkways may become icy and slippery.
Travel may become difficult at times.
###
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 19, 2025 04:56
Until: Dec 19, 2025 20:56
rainfall
Rainfall, combined with melting snow, continues. The frozen ground has a reduced ability to absorb this rainfall.
What:
Total rainfall amounts of 20 to 30 mm.
When:
Continuing through early Friday afternoon.
Additional information:
Rain will change over to flurries late Friday morning or early Friday afternoon as temperatures rapidly fall below the freezing mark.
For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit Ontario.ca/floods for the latest details.
###
Water will likely pool on roads and in low-lying areas.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.
From: Dec 19, 2025 04:28
Until: Dec 19, 2025 20:28
Lake Effect Snow Warning
* WHAT...Heavy lake effect snow is expected to redevelop Monday for
Jefferson and Lewis Counties. Total snow accumulations 8 to 16
inches in the most persistent lake snows.
* WHERE...Jefferson and Lewis Counties. Greatest snow accumulation
across southern Jefferson and western Lewis Counties.
* WHEN...From 7 AM Monday to 1 PM EST Tuesday.
* IMPACTS...Travel will be very difficult with deep snow covered
roads. The hazardous conditions could impact the Monday morning
and evening commutes.
From: Dec 15, 2025 12:00
Until: Dec 16, 2025 18:00
