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Weather Vane

Weather Vane by Daniel Bezte
Other, Weather, Weather Vane

Smoke and its impacts on our weather

Smoke can inhibit convection, the main force behind cloud and rain development

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Smoke from forest fires across the Prairies has generated questions about how smoke might affect weather. So, let’s take a break from our Meteorology 101 class and use this teachable moment. The effect of smoke on weather is not straightforward. Smoke can alter several variables and the outcome depends on the state of the atmosphere,
Weather Vane by Daniel Bezte
Weather, Weather Vane

Understanding atmospheric circulation

METEOROLOGY 101 | Air in our region must contend with a messy interaction of land and water

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The first thunderstorms have appeared in our region, so it’s time for our annual look at thunderstorms. But first, let’s continue our Meteorology 101 class to build on the base of knowledge needed to understand thunderstorms in more detail. In our last lesson, we looked at atmospheric circulation. On a simplified Earth, we would have thermally produced
Weather Vane by Daniel Bezte
Weather, Weather Vane

Continuing our look at wind

Meteorology 101: There are reason why all of Earth’s air doesn’t flow north-south

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In the last Meteorology 101 class, we introduced the four main forces that drive our winds: gravity, air pressure, Coriolis and friction. This week we will go into more detail to better understand what creates wind. Without gravity, there would be no weight to the atmosphere, and without weight there would be no air pressure.
Weather Vane by Daniel Bezte
Weather, Weather Vane

Consistently cold April in Manitoba, Saskatchewan

The CFS model points to above-average temperatures and below-average precipitation

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After a colder-than-average winter, followed by a colder-than-average start to spring, most of us across Manitoba were hoping April would break out of this cycle. It didn’t. Unless you spent every waking minute inside, it was just plain cold in April. Similar to March, we didn’t see record-breaking cold. It was just consistently cold. I’m
Weather Vane by Daniel Bezte
Weather, Weather Vane

Weather: Warm temps finally return

Forecast issued Apr. 28, 2023, covering the period from May 3 to May 10, 2023

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If you paid attention to the end of last week’s forecast, you might not be expecting a weather forecast in this issue. We are working to switch from print-based to web-based forecasting, which will allow us to create better and more timely forecasts. Well, you know the saying: best-laid plans. Due to unforeseen technical issues,
Weather Vane by Daniel Bezte
Other, Weather, Weather Vane

A first look at wind (and Earth’s warm March)

Meteorology 101: How gravity, pressure, friction and the Coriolis effect produce wind

By
Global temperatures for March show that, while much of the Prairies has been experiencing colder-than-average temperatures, most of the planet has been warm — very warm. According to NOAA, NASA, and the European Copernicus Climate Change Service, this March was the second warmest on record. This is impressive because our planet is coming out of
Weather Vane by Daniel Bezte
Weather, Weather Vane

Weather: Cool and unsettled weather to continue

Forecast issued Apr. 21, 2023, covering the period from Apr. 26 to May 3, 2023

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The last week’s forecast hit the nail on the head with respect to the overall weather pattern, as two different storm systems impacted our region as predicted. However, the models struggled with the interaction between these two systems. The first system hit southwestern regions on April 18 and 19. It then stalled out, while the
Weather Vane by Daniel Bezte
Other, Weather, Weather Vane

Heat, land and water

Land and water react very differently to incoming solar radiation, with huge effect

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Before jumping back to our meteorology 101 classes, we have to say a few words about this spring’s snow melt. Holy cow, was that fast! Perfect conditions came together for what can only be called one of the fastest snow melts I can remember. First off, most areas did not have deep snow cover and
Weather Vane by Daniel Bezte
Weather, Weather Vane

Weather: Winter tries to hang on

Forecast issued Apr. 14, 2023, covering the period from Apr. 19 to Apr. 26, 2023

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Surprisingly for spring, last week’s forecast played out close to what the weather models predicted. The expected Colorado low late in the week developed as the models thought it would. It moved in earlier and moved out earlier and was not as strong as forecasted. It did intensify, but not until it was in northern Ontario, and that
Weather Vane by Daniel Bezte
Other, Weather, Weather Vane

Earth’s energy budget needs to balance

Meteorology 101: The greenhouse effect is a natural phenomenon, but it’s been ‘enhanced’

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In the last class of Meteorology 101, we looked at how heat moves around by examining conduction, convection, advection and latent heat transfer. This week we will explore the Earth’s energy balance, or what is often referred to as our energy budget. First, let’s look at the greenhouse effect. It’s a topic that gets some

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