Summer was mostly warmer, drier than average

The current El Niño may take us into a warm, dry autumn

Summer 2023 has come and gone, and weather-wise, it was a bit of a mixed bag across the Prairies. Large parts were dry, some regions wet, while a few lucky locations received the perfect amount of precipitation. Summer started off hot, then went cool over eastern regions before turning back to average by the end.

Extreme rainfall and a warming planet

Meteorology 101: A warming world may spur development of more blocking patterns

So far, none of my discussions about severe weather have manifested in an big outbreak of severe weather, so for those who are superstitious, we can put that to rest. In the last issue we discussed several factors that can result in extreme rainfall events. These ranged from simply having lots of atmospheric moisture to


The factors that contribute to heavy rainfall

Storms are a fact of summer life — but what makes a heavy rainstorm?

Last time we started our look at one of the last severe summer weather events, extreme rainfall. I looked back at the weather articles I have written over the last 20 years, and I only found one other article that talked about the causes for extreme rainfalls and that was back in 2015. So, I

Relative humidity, dew point and rainfall

Meteorology 101: Warmer oceans and warmer air mean generally greater humidity

For our latest instalment of Meteorology 101, I lump together two summer weather events: rainfall and humidity, which each have associated advisories and warnings. Humidity, by its simplest definition, is the amount of water vapour in the air. The warmer the air, the greater the distance between air molecules and the greater the holding capacity for water vapour. Due


July: Cool east, warm west, dry in between

Summing up weather conditions during July

Believe it or not, July started off hot, but only the first two days had daytime highs above 30 C. After that, Manitoba saw the development of a deep Hudson Bay upper low that meandered around for nearly two weeks, placing the eastern Prairies under a cool northerly flow. That weather pattern broke in the

Weather: July starts with an upper-level low

The nature of these lows makes it difficult to predict how long they’ll last

As we work our way into summer, an ugly weather term has popped up: upper-level low. The coolish, unsettled weather we’ve seen in early July has largely been the result of an upper-level low that formed over Hudson Bay. Let’s look at upper-level lows and why they become so annoying, especially in summer. Before we


June was warmer than July on average

In this month's outlook, the CFS model calls for around-average temperatures and above-average precipitation

If you remember back to May, one of the comments about what June’s weather might be like was the possibility of instant summer. That is exactly what happened across the Prairies in June. Right from the beginning of the month, it felt like we just left spring and jumped right into the middle of summer.

Straight-line winds can be the worst thunderstorm threat

Meteorology 101: Not all, but nearly all such winds occur near a storm's leading edge

The latest world monthly temperature rankings have come out for May. Not surprisingly, it turned out to be one of the warmest Mays on record, rated third warmest by both NASA and NOAA. The European Copernicus Climate Change Service ranked May as the second-warmest, while the Japanese meteorological agency placed May as the warmest on


That dreaded weather phenomenon: hail

Meteorology 101: You don’t necessarily need a tall thunderstorm to produce hail stones

Hail is probably the most feared and costly type of severe summer weather. If you’ve lived any significant amount of time on the Prairies, you have likely experienced a hailstorm. While hail can occur anywhere across North America, there are two main regions where incidence is significantly higher — the central United States and the

A hot end to an overall cold spring

The CFS model favours above-average precipitation this summer

The start of June is the start of meteorological summer across the Northern Hemisphere. The meteorological seasons are each three months long. Summer is June to August, fall is September to November, winter is December to February, and spring is March to May. Astronomically, summer starts on the summer solstice, which falls on June 21. Now it’s time to look