North·BRADLYN'S BLOG

Heavy rain and thunderstorms on tap this weekend in Yukon and N.W.T.

Well here we go again, rain is on tap for the weekend, and this time the accumulations are unseasonably high. It is certainly going to be a drenching for those in the southeast Yukon and southwest N.W.T., particularly Fort Liard and Watson Lake. 

Rain accumulations this weekend could blow June averages out of the water

A storm system moves over the Mackenzie River near Fort Providence, N.W.T., on June 26, 2016. Unsettled weather across the N.W.T. and Yukon could bring heavy rain at times. (Walter Strong/CBC)

Well here we go again, rain is on tap for the weekend, and this time the accumulations are unseasonably high. It is certainly going to be a drenching for those in the southeast Yukon and southwest N.W.T., particularly Fort Liard and Watson Lake. 

Is the rain going to stop our mid-June plans? Probably not, but with accumulations this high, it does call for a little bit more preparation. Rain this heavy means that everyone needs to be careful of flooding risk and be careful on waterways and around rivers. Make sure to always be prepared when you are out and adventuring. 

Accumulations over 100 mm possible

Now, the rain has already started. Accumulations began yesterday and will continue through Tuesday when most rain will diminish through both the Yukon and N.W.T.

Rainfall accumulation through this weekend could top 100 mm in Fort Liard, with highest amounts falling Sunday and Monday. (Bradlyn Oakes/CBC)

Fort Liard will be the place with the highest accumulations, with current models suggesting over 100 mm of rainfall. So far this June, Fort Liard has had over 30 mm of precipitation. With an additional 100 mm, that would more than double the June 1981-2010 average of 59.5mm. 

Watson Lake will be the other community with high accumulation, with up to 80 mm through Tuesday. Again, blowing the seasonal precipitation amounts out of the water. The average for June in Watson Lake is 54.9mm. 

Timeline of this system

Our major weather maker here is not just one system, but instead a series of surface lows combining into a trough of low pressure reaching through the Yukon from the provinces in the south.  

A series of surface lows along a trough are the weather makers this weekend. 0:11

Surface lows will continue to stay in place through the next few days, bringing heavy rainfall for most of the weekend. Though a little break from the constant precipitation looks likely overnight tonight. 

Into Sunday and Monday, that heavy rain is back at it as the systems stay in place, bringing heavy accumulations almost constantly for the two days. 

When rainfall comes back on Sunday and Monday, it does so with heavy accumulations. Some individual hours could see 5 mm of heavy rain. (Bradlyn Oakes/CBC)

Thunderstorm risk, high winds and hail also possible

A weekend of non-severe thunderstorm potential is in store, with heavy rain, risk of hail and gusting winds. (Bradlyn Oakes/CBC)

In addition to the rain, the risk of non-severe thunderstorms continues this weekend. These not only impact the Fort Liard and Watson Lake areas but communities down the Mackenzie and throughout the Yukon. There is potential through the weekend for high wind gusts, hail and of course, lightning. 

Wind gusts up to 50 km/h today in Fort Liard. These will increase through the N.W.T. into Sunday as well. (Bradlyn Oakes/CBC)

About the Author

Bradlyn Oakes

Meteorologist

Bradlyn Oakes, CBC North’s meteorologist, covers the weather and climate for the Canadian territories. You can catch her weekdays on CBC’s Northbeat at 6 pm MT. Have weather photos to share? Send them to bradlyn.oakes@cbc.ca.

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