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Rain, possible thundershowers may put quick end to summer in the Tri-Cities

Summer's warm, dry weather pattern for the Tri-Cities is heading for a change during this last week before school starts.
Raindrops may appear on your window Tuesday as a change in the weather pattern is predicted.

Summer's warm, dry weather pattern may be swiftly changing just as the summer break is coming to an end for School District 43 (Coquitlam).

According to Environment Canada, periods of rain are expected Tuesday (Aug. 29), as well as a few thunderstorms overnight tonight (Aug. 28) and into the morning.

There is also a risk of a thunderstorm tomorrow afternoon, the national weather agency predicts.

Forecasts vary on amount of rain

The Tri-City News checked three weather agencies and all have differing predictions of how much rain will fall and when.

Weatherhood — shows 99 per cent chance of rain tomorrow, followed by clouds and showers Wednesday (Aug. 30), sun mixed with clouds, Thursday, Friday and Saturday (Aug. 31-Sept. 2) and possible light showers Sunday (Sept. 3).

The Tri-Cities is in for some rain this week with between five and 10 mm expected by Wednesday morning (Aug. 30). By Weatherhood


Environment Canada — with its Pitt Meadows weather station, Environment Canada is predicting a 40 per cent chance of showers every day through to Friday, followed by sunny and warm weather Friday, a mix of sun and cloud Saturday and a 30 per cent chance of showers on Sunday. 

Environment Canada is predicting periods of rain and thundershowers for Metro Vancouver this week, including the Tri-Cities. By Environment Canada


Weather Network — In Coquitlam, the Weather Network is predicting partly cloudy conditions tonight with an 80 per cent chance of rain into tomorrow (up to 5 mm), with a chance of light rain predicted for Wednesday and Thursday, possibly returning for Sunday and Monday of the long weekend.

Across B.C., the organization is also predicting an unusual pattern of evening thundershowers as the weather pattern begins to change. 

Thanks to rain, hazy skies might become more clear but low amounts of precipitation won't likely be enough to change the fire rating index, which, in Coquitlam, is currently high.

It's not unusual for the weather to change toward rain as the PNE Fair starts and school looms.

Of note, according to Environment Canada, a record 38 mm of rain fell in the region on Aug. 28, 2008.