Once upon a time, there was a high. This high currently is in the Canadian prairies, where it’s enjoying its few days in comfort, bringing quite cool weather to Alberta, but maybe a little too cold of weather basically everywhere else in this half of the country. (Regina got a wind chill of -38 last night) This high originated up in the arctic, where it formed part of the polar vortex, along with its similarly cool friends. It did, however, have a dream of one day of setting up a farm and living a great life growing and harvesting crops, and living off the land, but this northerly soil was just simply not fertile enough for that. So then… only a few days ago, it finally decided to move south, looking for a more feasible land to plant in. It is a hard endeavor moving such a long distance, but so far the high is already halfway there. It should be there by about tomorrow evening.
Of course, when two highs separate, trouble usually follows! A mischievous low has been watching the high and waiting to unleash it’s plan this whole weekend! This low has really been wanting that land for it’s own plans, but the high snatched it up before this low could actually get down there. Now that high has to go. It must be rid of, so this land can actually be put to good use.
The low has already started to unleash it’s plan, by beginning with making a trough extending from it’s home- just north of Alaska- all the way down to at the moment about Yellowknife. Tonight it will extend this trough to about northern Alberta, before then sending out a smaller “minion low” tomorrow to secure the area.
Over Tuesday, this minion low will continue to move through Alberta and Saskatchewan while securing the land before heroically getting sucked up by some highs about the moment it gets into the US. This will mean temperatures nearing 0 for a high on Tuesday. A little wrap-around precipitation may be left behind, so we a chance at precipitation Tuesday night. On Wednesday, some allies of the high will manage to “ridge up” jet stream a bit, but not enough for a significant amount of cooling. It is still supposed to be slightly cooler.
By Wednesday, the low is growing restless. It must capture the land and force out the high. The low will take a very dangerous move: It will slide all the way over into the prairies, ready to fight for and win its land. The highs and lows will soon clash in an extraordinary mixture of temperatures spread out over the whole western half of the country! Once that’s nearing an end, one high- the original high- completes a daring move on Thursday night; it makes a ridge! This ridge pushes away the low with much, much force, now making the low stuck in Hudson Bay. It wanted land, not water!
Now that the high has triumphed, it can finally set out to what it wanted to do, while sitting back and watching the ridge slowly dissipate and the prairies descending back down to a cold wave. The end.