Weather: Northwesterly flow expected to develop

Forecast issued November 11, covering the period from November 16 to 23, 2022

Weather models had a good handle on our last forecast period. They were correct about the development and overall movement of last week’s Colorado low. It developed as forecasted and ended up moving northeast in two waves, as expected. The first wave was early in the week; the second, late in the week. Timing of

When does winter start?

What defines the beginning of our winter and how long was our growing season?

It is a little late in the fall for this, but I have finally crunched the numbers on length of the frost-free season across the Prairies this year. And with winter knocking on our doors, it is also time to examine when we should normally expect to see winter arrive. Listed below is this year’s


Weather: Chance of stormy weather but lots of uncertainty

Forecast issued November 4, covering the period from November 9 to 16, 2022

What is the old saying? Don’t like the weather? Wait a minute. That seems totally appropriate for our current weather pattern.  We are in a very active pattern as the persistent ridge of high pressure that brought warm fall weather across Western Canada has collapsed and, in its place, we have a large trough of

Lots of disagreement on early winter weather predictions

Depending on what model you’re looking at, it’s anyone’s guess this winter

I keep promising to take a final look at this year’s frost data, but here we are at the end of another month. Though there are a couple days left in October as I write this, by the time you read it we will already be a couple of days into November. If I wait


Weather: Looking for the start of winter

Forecast issued October 28, covering the period from November 2 to November 9, 2022

Last issue’s forecast turned out not too badly, with only a couple of wrinkles. There was a faster than expected return to mild temperatures and instead of a southern low, the western ridge rebounded, bringing nice warm fall weather through the last weekend of October. As we head into November, we will see average daytime

The science behind snow fences

Consider your land’s natural snow trapping capacity before laying out a fence

At the end of the last article, I said we would look at the frost-free season this past year, but I received a couple of emails asking if I could revisit the topic of snow fences. It has been a long time since we touched on this topic. With this in mind, and with winter


Weather: The forecast models are struggling

Forecast issued October 21, covering the period from October 26 to November 2, 2022

Forecasting the weather is hard, as I have repeatedly pointed out, and forecasting the weather a week in advance is even harder. Add in the huge uncertainty that fall and spring bring to forecasting, and it starts to enter the realm of impossibility. That said, I still try to make a go of it. Last week’s forecast started

Your guide to descriptive cloud names

All regions of the Arctic saw below-average ice cover this summer

Let’s continue our study of clouds by looking at several additional terms that can be used to describe and help identify them, and we’ll also look at some rare or unusual cloud types. Before diving in, I want to do a quick update on the state of Arctic sea ice, as I have not given


Weather: Upper ridge and mild weather featured in forecast

Forecast issued October 14, covering the period from October 19 to October 26, 2022

Last week’s forecast ran into trouble early on. After a warm start, the forecasted northern low tracked by and dragged cold and unsettled air into our region. This northern low then stalled out over Hudson Bay and drifted back westward. This retrograde motion kept us in a cold and moist northerly flow all of last weekend and kept the

Advective frost and different types of clouds

No matter the altitude, clouds come in many variations

We took a break from our look at clouds to check the monthly look back at weather and look ahead to see what might be in store. Before we get back to the clouds, I want to answer a question about frost; in particular, the difference between radiative and advective frost. Radiation frost or radiative