Monday, September 27, 2010

Wet and Dreary; Sunshine returns midweek; FROST possible this weekend

Dreary and wet across the Hamilton region today as a storm system slowly moves up the eastern seaboard of the USA. There is plenty of tropical moisture with this. We will likely see 20-30mm of rain from this event across the region, however the majority of the rainfall will occur over eastern Ontario where rainfall warnings are currently in effect.
Easterly winds will be brisk gusting to 40 at times today and that will certainly put a bite in the air, so jackets are a must today.

The majority of the rain will fall across the regions Monday night and into Tuesday. There could be some embedded thunderstorms and this would increase the rainfall totals on a very local scale.

Environment Canada has issued this special weather statemend regarding the rainfall across Southern Ontario.....

Significant soaking rainfall on the way...

A large and juicy low pressure system laden with tropical moisture
Is moving north towards the lower Great Lakes from the Southeastern
United States. This disturbance will bring a large shield of rain
across all of southern and Eastern Ontario tonight and Tuesday as
The low pressure system moves through.

Current trends continue to suggest that the heaviest rainfall will
occur over Eastern Ontario where rainfall warnings are in effect.

However across the rest of the forecast district a general rainfall
of 15 to 30 millimetres is likely tonight and Tuesday.  Locally
higher amounts of 30 to 50 mm are possible in a few locales that
receive an isolated thunderstorm or heavier rain band or two.

Environment Canada is closely monitoring this situation. Rainfall
warnings may be expanded into parts of Southern Ontario as needed.

Surface Map from Monday Afternoon
 Sunshine should return for Wednesday and Thursday with a nice reprive to the upper teens or even 20° by Thrusday. This will be short lived as another cool shot will dive southwards and bring some of the coolest weather so far this season for the first weekend of October. There is the possibility of seeing some Frost this weekend, especially for areas away form the lower lakes.

Taking a look at the tropics....


In other weather news....

It's that time of year when Snow becomes more widespread, but generally its confined to the northern portions of the country in the Yukon, NWT and Nunavut. Whitehorse recieved it's first snowfall of the season just the other day getting upwards of 13cm of the whitestuff. Showen hear is the Whitehorse Airport with snow covering the tarmack. There has already been some snow in Alberta and Saskatchewan which is not all that uncommon for September, but it won't be long before snow flies across the entire country.

1 comment:

  1. Juicy?...

    First time I heard that 'technical' term in an Environment Canada warning...

    ReplyDelete