Subsequent low pressure systems moving across the region this week are forecast to bring mixed precipitation and mild temperatures. Yesterday’s above-freezing temperatures will continue today (Tuesday), nearing 10°C in some areas before dipping below freezing overnight. Temperatures are forecast to straddle the freezing point throughout the week before a brief cold spell moves in this weekend. The long-term forecast hints at a return to mild temperatures next week, indicating the early beginning of the freshet.

Chance of rain showers are possible today, with 2 to 5 mm of rain forecast for tomorrow (Wednesday) in addition to some snow. Trace precipitation is forecast into Thursday and Friday as well, however some forecasts are indicating closer to 15 mm of rain/snow equivalent over the next five days.

As of last week, the snowpack was estimated to be around 60 mm SWE (snow-water equivalent), with ice conditions on the lower reaches of the Sydenham River measuring between 7 and 15 inches (18 to 38 cm). Above-freezing temperatures and rainfall on top of snow will reduce the snowpack and lead to increased runoff, ponding, and an increase in water levels; ice conditions are also anticipated to begin deteriorating and may break up in some locations.

Individuals are reminded to avoid watercourses and flooded areas due to dangerous conditions, slippery banks, unstable ice conditions, and cold, swift moving water. Children and pets should be kept away from the water.

The Conservation Authority continues to monitor watershed conditions and will issue advisories to municipalities and media should flood issues arise. Municipal emergency response staff and road superintendents should monitor local conditions closely.

This message will remain in effect until 12 p.m. on March 7th, 2025, unless otherwise updated.