Tuesday, October 18, 2011
Wet - windy week
It is definitely October. The walk with Bella this morning included gloves and an upgrade in the jacket department. We are at a chilly 9C on Ile Perrot, but it is damp and still breezy. Southern Quebec will remain under the influence of low pressure over James Bay today with a southwest flow of damp air coming off the Great Lakes. Temperatures will be around 13C with the ever present risk of showers.
We have a very stormy weather pattern shaping up for the balance of the week. Low pressure will get organized over the Ohio Valley and tap into moisture from a tropical low near Florida (see NOAA image above). That energy will slowly move northeast into Quebec by late in the week. Look for rain and windy weather to develop late Wednesday and taper to showers by late Thursday. Temperatures will remain near normal with all the precipitation in Quebec falling as rain. About 25mm is expected here with as much as 50mm in southern and central Ontario. Meanwhile west of the storm center, colder air will arrive by late Thursday and switch the rain to snow in a swath from north of Sudbury to Timmins. Some models are predicting up to 10cm could fall by Friday. We will see how the storm evolves and tracks, this, however will not produce any snow in Montreal, but it is coming.