Environment Canada’s Lisa Irvin says a major shift in the weather is on it’s way.
She says the hot temperatures and sunshine that were driven by a ridge of high pressure is going to give way to an incoming upper low…
“What that means is that the system is going to bring a cool unstable air mass to Central B.C., so daytime high temperatures are really only going to reach into the mid teens by Friday-Saturday, which unfortunately is quite the drastic change from the temperatures of 30, 31 that we saw earlier this week. And then in addition to the cooler temperatures the system is also going to bring bands of rain along with it. They will sort of rotate around this low pressure system, so giving periods of rain and the risk of thunderstorms.”
Irvin says the risk of a downpour will increase throughout the day today.
She says the forecast is calling for up to 5 millimeters in most areas today and then more after that…
“As we move into Friday and that low pressure system really settles in over the Central Interior, the forecast is calling for showers. Showers implies on and off rain throughout the day with the risk of more thunderstorms. A high of only about 14 degrees for Friday. And then for rainfall amounts we could be in the range of 5 to 10 millimeters, but possibly up to even 20 millimeters, if you are right underneath one of those heavier showers or thunderstorms. A very similar forecast for Saturday. You might get lucky with a bit of a longer break here and there, again as these bands of rain rotate up and around the system. But we expect rainfall amounts very similar to Friday, and daytime highs getting up to about 17 degrees.”
Irvin says the system will then start to clear out by Sunday when we can expect mainly just a mix of sun and cloud and highs back into the mid 20’s with not a lot of shower activity.