Rain & Thunderstorms

Radar this morning is showing a westward moving area of rain affecting Montreal and southern Quebec. This rain is in response to low pressure along the Atlantic seaboard. The rain and embedded thunderstorms will continue for most of the day with around 25mm possible. Further west in Ontario it will be more showery with less accumulation. Once this system pulls out of here, we will be under the influence once again of the low pressure area stuck over the Great Lakes. it will produce humid conditions with intervals of sunshine and some showers and storms. (See 700th post). Anyway it will not be a great week for Canada Day and those on vacation. Temperatures will be in the 22C to 24C range unless we get prolonged sunny breaks as we did yesterday. That tends to drive the temperatures up quickly, yesterday Montreal went from 20C to 27C in a couple of hours as a result of the breaks. It also destabilizes the air and can lead to clouds and thunderstorms. Ah the circle of weather!