Warnings

4:24 AM EST Tuesday 20 February 2018
Rainfall warning in effect for:

• Uxbridge - Beaverton - Northern Durham Region

Rainfall, combined with melting snow, continues.

Significant rainfall continues until Wednesday morning.

Several rounds of rain will continue today and tonight giving rainfall amounts of 25 to locally 40 mm by Wednesday morning. Since very mild conditions are accompanying the rain, considerable snowmelt is anticipated. As a result, localized flooding is likely in low-lying areas.

This wet, record mild spell is attributed to a series of low pressure systems moving along a warm front draped across the lower Great Lakes. A final band of rain is likely along a cold front Wednesday, bringing the rain to an end. However, multi-day rainfall totals in the 30 to 50 mm range are likely in some areas.

If visibility is reduced while driving, slow down, watch for tail lights ahead and be prepared to stop. Localized flooding in low-lying areas is possible.

Rainfall warnings are issued when significant rainfall is expected.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

4:07 AM EST Tuesday 20 February 2018
Rainfall warning in effect for:

• Newmarket - Georgina - Northern York Region

Rain, heavy at times continues. The frozen ground has a reduced ability to absorb this rainfall.

Major rainfall event continues until Wednesday morning.

Several rounds of rain will continue today and tonight. Total rainfall amounts from Monday night through Wednesday will be in the 50 to 75 mm range.

This wet, record mild spell is attributed to a series of low pressure systems moving along a warm front draped across the lower Great Lakes. A cold front will arrive Wednesday, bringing an end to the rain.

Localized flooding in low-lying areas is possible. If visibility is reduced while driving, slow down, watch for tail lights ahead and be prepared to stop.

Rainfall warnings are issued when significant rainfall is expected.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Statements

4:49 AM EST Tuesday 20 February 2018
Special weather statement in effect for:

• Pickering - Oshawa - Southern Durham Region
• Vaughan - Richmond Hill - Markham

Significant rainfall into Wednesday.

Several rounds of rain will continue today and tonight. Rainfall amounts of 5 to 10 mm are possible today and again Wednesday.

This is below Environment Canada's criterion for rainfall warning of 25 mm in 24 hours when the ground is frozen.

However, this rainfall along with snowmelt due to very mild temperatures may result in ponding of water in poorly drained areas.

This wet, record mild spell is attributed to a series of low pressure systems moving along a warm front draped across the lower Great Lakes. A final band of rain is likely along a cold front Wednesday, bringing the rain to an end. However, multi-day rainfall totals in the 20 to 30 mm range are likely in some areas.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

4:33 AM EST Tuesday 20 February 2018
Fog advisory in effect for:

• Newmarket - Georgina - Northern York Region
• Pickering - Oshawa - Southern Durham Region
• Uxbridge - Beaverton - Northern Durham Region
• Vaughan - Richmond Hill - Markham

Near zero visibility in fog is expected or occurring.

Widespread fog is persisting this morning. Visibilities will be frequently reduced to less than 800 metres at times. Fog is expected to lift later this morning.

If visibility is reduced while driving, slow down, watch for tail lights ahead and be prepared to stop.

Fog advisories are issued when near zero visibilities in fog are expected or occurring.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.