22 June 2010

22nd June 2010 - Tuesday

High: 20.1
Low: 11.3
Days we didn't see any sun: (48)
Days swept snow from drive (0)
Days shovelled snow from drive (14)

It was a bright and sunny start with a bit of light cloud cover. It was +12 at 8.30am and quite warm. It was a very hot day, but it started to cloud over during the afternoon and had got quite dark by around 4.30pm and shortly after it started to rain.

The following weather warning has been issued:
Tornado watch for: Calgary, Okotoks, High River Airdrie, Cochrane & Claresholm

Funnel clouds have been reported southeast of Airdrie and over Southern Calgary.

Conditions are favorable for the development of funnel clouds and tornadoes. These types of tornadoes form out of weak thunderstorms and are usually not as destructive as their severe thunderstorm cousin. They are difficult to track and can appear without warning. They normally move slowly and can last for many minutes. They often appear as a giant column of dust from the ground to the bottom of the thunderstorm. Their destructive power is usually felt over a very small area.

Treat all funnel clouds and tornadoes seriously and avoid when possible. Should one develop nearby take shelter underground or in a reinforced structure like a bathroom or interior closet. If you are in your vehicle try to move away from the tornado at right angles.

Environment Canada continues to monitor the situation closely. Please continue to monitor your local media or weather radio for further updates.

Conditions favorable for the development of funnel clouds and landspout tornadoes are occurring over areas near highway 2 and to the east of the City of Calgary. Daytime heating is acting in combination with an unstable airmass to produce funnel clouds. The convergence boundary responsible for the formation is moving southeast at 10 km/h.

By around 6pm the Watch was over and the sun was shining again.

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