The fence should be placed perpendicular to the prevailing wind direction and should extend up to 10 times the fence height in either direction of the area the fence is trying to protect. | Getty Images

Placement, height key to effective snow fences

Placement is the biggest mistake made when putting up a snow fence. The capacity of the fence and the average amount of blowing snow is important. To estimate the quantity of blowing snow expected in a typical winter, you need to determine the fetch or distance where wind can pick up and then redeposit snow. […] Read more

This year’s arctic sea ice minimum was reached on Sept. 12 and was around 4.38 million sq. kilometres. This was the sixth lowest reading in the 46-year satellite record. To put that into perspective, every year since 2014 has been one of the 10 lowest years, much like global temperatures. | Getty Images

Numbers show less sea ice, longer frost-free periods

Let’s take a look at two signs of a warming world: the shrinking arctic sea ice and the lengthening frost-free period on the Prairies. I find it interesting that if arctic sea ice levels are not breaking records, it no longer seems to make it into the headlines. This year’s arctic sea ice minimum was […] Read more

Monthly temperatures that are two to three degrees above average are a little unusual, and temperatures three to more than five degrees above average are very unusual. It has been over 20 years since we had a September this much above average. | Getty Images

September was warmer than last June

I now have all of September’s weather data from the main reporting stations across the Prairies and we can finally get to our monthly weather review. Let’s start with temperatures and the ranking of mean monthly temperatures across the Prairies. While I knew it was a warm month, some of these values surprised me. The […] Read more


The "value" category ($20 to $100) is where you find most of the Canadian Tire, Walmart or other big box store weather stations. One weather station seems to dominate, and that is La Crosse. | Screencap via canadiantire.ca

A decent weather station is not that expensive

Here’s a look at what’s available in weather stations according to budget, based on the reviews of other users. This is the category where you find most of the Canadian Tire, Walmart or other big box store weather stations. One weather station seems to dominate, and that is La Crosse. There are several variations of […] Read more

Wet week - This map shows the total precipitation that fell across the Prairies during the seven-day period ending Sept. 18. Two rainfall events hit Alberta and Saskatchewan and there were thunderstorms in Manitoba. Much of the southern and central Prairies saw significant rainfall but the Peace River region of Alberta was dry. | Source: Environment Canada, Agriculture Canada

Hotter atmosphere drives extreme rainfall

Three regions had extreme rainfall and flooding over the past few weeks across the globe. In northwest and north-central Africa, unusually persistent and heavy rains caused severe flooding in an area that is usually very dry. In fact, parts of the Sahara Desert and Sahel belt have seen significant rainfall. The second area of extreme […] Read more


The Ambient Weather WS-5000 weather station starts at about $650 CDN. | Screencap via ambientweather.com

On the hunt for a good weather station

My first weather station was a Davis Weather Monitor II and it served me well for a number of years. I then upgraded to a Davis Vantage Pro and had fairly good use out of it, but I did have to replace a few parts and get a battery issue fixed. These were good, reliable […] Read more

August flipped the script with rainfall

August flipped the script with rainfall

We have all the weather data from the main reporting stations across the Prairies, so we can review August weather and then look at the latest three-month forecasts or predictions. Instead of going province by province, I will rank the main reporting sites by mean temperature, how far above or below average it was, total […] Read more

The two main conditions almost always present for extreme rainfall are plenty of moisture and slow movement. | File photo

How atmosphere affects extreme rainfall

In the last column, we discussed several factors that can result in extreme rainfall events. Let’s wrap up this topic by looking at different weather patterns that tend to be associated with these events and consider how changing weather patterns might contribute. Let’s first look at some of the rainfall records across southern and central […] Read more


Several factors must come together for an extreme rainfall event to occur. | File photo

Several factors can contribute to heavy rainfall

Several factors must come together for an extreme rainfall event to occur. Sometimes you need more than one factor and other times, if the factor is strong enough, you just need one. Let’s look at those factors. Atmospheric moisture: For heavy rain, there must be a significant supply of moisture in the atmosphere. When warm, […] Read more

Humidity is the amount of water vapour in the air. The warmer the air, the greater the distance between air molecules and therefore the greater the holding capacity of air for water vapour. Warm air has the capacity to hold much more water than cold air. | Getty Images

Humidity often overlooked but potentially severe

One summer weather event is regularly overlooked but potentially severe: humidity. By its simplest definition, humidity is the amount of water vapour in the air. The warmer the air, the greater the distance between air molecules and therefore the greater the holding capacity of air for water vapour. Warm air has the capacity to hold […] Read more