Risk of Thunderstorms to Start the Week

One of our first risks for thunderstorms will come early this week.

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The green area outlines the risk of thunderstorms on Tuesday

Monday

Monday
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Mainly cloudy. Chance of showers.
21°C / 15°C

Today should be a generally dry day in Southern Manitoba with only a chance of showers. There is also a slight risk of a thunderstorm, but any storms that develop will be relatively weak. Temperatures will be in the upper teens or lower twenties in most areas under mainly cloudy skies. The wind will be from the south-east.

Our next reasonable chance for rain will likely come tonight night as a powerful impulse generates an area of rain. This rain is currently expected to be heaviest over Western Manitoba, but may affect the Red River Valley as well, albeit with lesser amounts. It is entirely possible that this rain could miss us completely, but it is too early to say exactly what will happen.

Tuesday

Tuesday
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Risk of a Thunderstorm
23°C / 10°C

Tuesday should feature our best chance of thunderstorms this week. A low pressure system and its associated cold front will pass through Southern Manitoba at some point during the day – likely through midday – and may trigger some storms. These storms are expected to be non-severe, but if there is a bit more instability than currently expected, there is a very slight chance that one of two may become marginally severe. The main risks with any storms that develop will be hail, perhaps up to nickel size, and gusty winds. The storms should be fairly fast moving so heavy rain is a lesser concern. Other than this chance of thunderstorms, there will also be a general chance of showers through the day. Temperatures will be in the low, or maybe mid twenties (depending on how the weather features setup), with a southerly flow switching to a westerly flow after the frontal passage.

Wednesday

Wednesday
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Mainly Sunny
23°C / 8°C

No significant precipitation is expected in Southern Manitoba on Wednesday, except again for the odd shower. Temperatures will be in the upper teens or lower twenties with mainly sunny skies.

Long Range

At this point the long range forecast is fairly ambiguous, as it often is at this time of year. In the nearer term, it appears we may experience another significant rainfall event later this week as a powerful low pressure system develops to our south. This system may trigger severe storms in the US Plains, while bringing us a bought of rainfall. In fact, this system is looking quite similar to the one that brought parts of Southern Manitoba 200mm of rain and triggered severe storms, including the Moore, OK tornado, in the US a week ago. There is still significant uncertainty in terms of how this next system will play out and at this time it isn’t expected to produce the massive rainfall amounts that the last one did. We’ll have more details on this system on Wednesday. What happens beyond the end of this week is too uncertain to discuss right now.

The Elie Manitoba Tornado

5 Years Ago Today; A Personal Account of the Elie Tornado

5 years ago today, Canada’s first official F5 tornado touched down in the small community of Elie, Manitoba. It destroyed several homes, completely sweeping them away from their foundations. Trees were debarked, vehicles were destroyed, and the town’s flour mill was damaged. While it was originally rated an F4 tornado, after extensive investigation by Environment Canada it was upgraded to the country’s first F5 tornado, with estimated wind speeds exceeding 420km/h.

The following is a personal account from a friend of mine, storm chaser Justin H., who was out that day and witnessed the tornado first hand. I thought it fitting that on the 5th anniversary of the event we would have an account of the event from somebody whose enthusiasm for severe weather goes nearly unmatched. Justin, thank you for writing this and contributing to the site; I hope that you all enjoy reading about his experience.


A Personal Account of the Elie, MB Tornado

Written by Justin Hobson

I remember this day like it happened just yesterday. This tornado event will be forever etched in my memory as long as I live. The sights, the sounds, the smells. I still remember shifting my head up to take in the full extent of what was later known as Canada’s strongest documented tornado.

Conditions were favorable for severe thunderstorms on June 22nd, 2007 over much of Southern Manitoba as winds turned and increased with height in combination with high heat and humidity. These conditions favored rotating thunderstorms (Supercells). Storms were supposed to form along a cold front that was oriented from NE to SW across WesMan. A warm front was draped to the east through the Interlake with a surface trough dissecting the warm sector in half oriented north-to-south through Portage La Prairie. The warm sector was capped (inhibiting convection) for much of the day, but a tornado threat existed from the get-go if the cap were to be removed. The cold front was the definite trigger for storms but what was unusual about this day was that the combination of gravity waves originating from the MB Escarpment, horizontal convective rolls within the boundary layer, and moisture convergence allowed the cap to erode before the cold front arrived paving the way for explosive supercell development around 5:30 pm local time (2230 UTC) just to the NW of Elie.

I left work that afternoon with tornado chances fading because of the capping issues that were present all afternoon. I had planned to chase this setup for a week prior (models did a decent job in advance) so I was feeling upset as I was looking forward to chasing in my backyard around Winnipeg. As I left downtown and headed down Highway 3 towards home, I could see what looked to be like a volcanic eruption to the NW of my location. There was explosive cell development occurring southeast of Lake Manitoba. I continued home and was starting to get excited. The first thing I did upon arriving at my house was check the radar on weather office. Woodlands radar was already detecting this cell with some returns starting to show up NW of Elie. I said to myself, well I’ll pack up my gear in the mean time and if the next scan gets better…I’ll go for it. I grabbed my Dad’s camera, a baseball cap and went back to my computer. I clicked the reload page button a few times before the new image displayed its true beauty. A supercell was being born. It was in the right spot within the area of low pressure, and it was in the tornado zone that was analyzed earlier that afternoon.

I headed out, this time on Highway 2 towards Starbuck, Manitoba. Once I arrived in Starbuck I started to get rained on fairly heavily by the storm as I shifted directions and headed north out of town. I thought to myself, oh great the cell has already collapsed. I continued pressing north. Visibility was reduced as the rain got heavier and heavier. Some small hail (pea-sized) began hitting my car as I arrived at a crossroad that would take me west towards Elie (1 mile south). I headed towards Elie as the rain/hail began to ease. What I saw next was remarkable. A wall cloud! I couldn’t believe it…this was the first wall cloud I’ve seen that showed tor’ific potential. I parked on a gravel road just to the south of Elie, I placed my camcorder on the roof of my vehicle, hit record and watched.

Within minutes funnels began to form. I was so excited! A funnel would form, go back up, then a new one would form and reach a little further towards the ground. This happened several times before a long rope funnel reached toward the ground. My first tornado! I snapped some pictures and called Environment Canada to report what I was witnessing. Within minutes, the tornado grew larger, then smaller again, and then it really got its act together. It grew into a large cone tornado that almost looked blue from my vantage point. This was truly amazing. I couldn’t believe what I was witnessing.

“Her last words to me were “Oh…well…don’t die!”

My heart was racing…I had knots in my stomach (like what you get just before they pull the trigger at a 100m race). I was on the phone with Environment Canada reporting the change in shape and size to a forecaster named Curtis. Once I called that report in, I was on the phone with some friends as well as my sister Bryanne. She told me she heard that there was a tornado near Winnipeg. I told her I was right beside it near Elie…and that I thought that the tornado would hit the town…her last words to me were “oh…well…don’t die!” I put the phone down and took in the sight. I couldn’t believe what I was seeing…after 10 years of being passionate about severe thunderstorms…and after 4 years of chasing…I’ve finally done it.

Video of Canada's first F5 Tornado (upgraded from F4) taken from one mile away that severely damaged the western part of Elie, Manitoba on Friday June 22nd, 2007

I vividly remember how calm it was and was very observant to what was occurring all around me. I remember hearing Killdeer birds chirping away, as well as frogs in the nearby ditches. I also remember mosquitoes flying around and buzzing in my ear, and I can also remember hearing the constant low rumble of thunder to the east of my location. All of this was occurring while the tornado peacefully and slowly twisted its way across open fields towards the southeast. A passerby named Jason stopped by and was just as excited as I was. We exchanged a few words and I even snapped a picture of him with the tornado in the background. I obtained his email address to forward him the picture later on, and he was off to check on his house…he thought it may have been hit. By the time he left, the tornado grew larger and became darker in appearance. I could hear the tornado now. The only thing that resembles the sound in the real world is that of a waterfall. It was like someone was turning up the volume of this ‘waterfall’ as the tornado sluggishly crept closer.

“The tornado continued to hurl debris which could now be seen very high up into the sky wrapping around the tornado.”

At this time the tornado wasn’t growing larger…it appeared stationary for a brief time before it suddenly began moving to the right (East). Shortly after shifting its track I could here different sounds as large pieces of debris were being hurled around the circulation. It was hitting the town. I began to feel uneasy. Lightning started to grow more intense so I fled to my car with my camera and continued to record the tornado. Power flashes occurred for a brief moment as the tornado severed power poles while impacting the neighborhood on the west side of town. A friend named Chris called me and said that he heard there was a tornado near Elie and that the clouds over his head in SW Winnipeg were crazy (Mammatus likely). I told him I was near Elie and the tornado was hitting the town and that I would call him back later. He said to stay safe and hung up.

The tornado continued to hurl debris which could now be seen very high up into the sky wrapping around the tornado. The tornado was moving to the left now (West) where it grew thinner, and thinner, then suddenly disappeared. It was over? I wanted to get out of the area just in case the tornado redeveloped over my head. Shingles and insulation began to hit the vehicle and land all around the highway as I pressed north towards town. As I entered the town I could see a police car, an ambulance and what looked to be two dated fire trucks heading down a residential street towards the area that was impacted. There were several local residents rushing to the scene so I didn’t enter the town.

Upon making that decision I looked to my West and saw another tornado. I quickly did a U-turn and began to record the tornado as I drove back to the south towards Highway 2. The tornado was large and lasted for quite some time before becoming wrapped with rain and dissipating. This tornado was later rated an F3 after devastating a farmstead near the town of Oakville.

Well that is my story of the Elie, Manitoba, F5 tornado that occurred on June 22nd, 2007. This is the first time writing a detailed personal account of the event and it gave me welcomed goose bumps in doing so. I hope you enjoyed it!

Justin Hobson has recently completed a masters thesis on the F5 tornado in Elie. You can view it here.

Another Showery Day; Nicer Weather On The Horizon!

One more day of showers is in store for Winnipeg as another upper low tracks across the province before conditions finally begin to improve as the long-wave upper trough that has been quasi-stationary over the Prairies shifts off to the east and upper ridging begins building in.

6hr. QPF for Thursday afternoon from the GEM-REG

6-hour accumulated rainfall for Thursday afternoon from the GEM-REG. Showers with a slight chance of a thundershower are expected through much of Southern Manitoba today.

Another low will track across Southern Manitoba today, bringing with it more cloud and a chance of showers. This system brought widespread thundershowers to Alberta & Saskatchewan yesterday with multiple sightings of funnel clouds as well. Activity will be more subdued over Manitoba today as the system won’t have quite as much energy to work with as yesterday; in general the clouds should break up over the RRV a little this afternoon with scattered showers developing over SW Manitoba and pushing eastwards through the afternoon. Rain will likely be hit and miss as the disorganized mass pushes eastwards. Showers will move into the Winnipeg area by mid-afternoon and will push out/diminish in the early evening as daytime heating diminishes. There’s a slight chance for a thundershower or two, but that chance is marginal at best.

As the low moves off into NW Ontario tomorrow evening, it will mark the transition to a markedly different weather pattern. Through the day on Thursday, upper ridging will begin to build it’s way into the Prairies. We’ll finally see the sun again on Thursday as temperatures climb into the low 20’s across the RRV. There’s a slight chance of some showers/thunderstorms over SW Manitoba and the RRV as a shortwave slides down through the area. After that, it’s all sunshine as the upper ridge continues building into our area. Temperatures should push into the mid-20’s for the weekend with plenty of sunshine. Finally, some time to dry out!

A Chance of Showers Today, Mild Weekend Ahead

A weak trough pushing across SW Manitoba today will push into the Red River Valley this evening, bringing with it some scattered showers or thundershowers. Things will clear out quickly, and we’ll be looking at temperatures in the mid-20’s for the weekend.

GEMREG QPF for Friday Afternoon

Total expected precipitation from teh GEMREG model this afternoon.

We’ll have a slightly more unsettled day today as a weak surface trough pushes into the Red River Valley this afternoon. Temperatures will climb up to just over the 20°C this afternoon before showers and thunderstorms develop over SW Manitoba and push eastwards into the Red River Valley. Dynamics begin to fall apart as the afternoon progresses, and any showers or thunderstorms will struggle to survive in an increasingly disorganized environment. It looks like the best chance of seeing some rain this afternoon will be through the Western Red River Valley, with diminishing chances east of the Red River. By the time the trough gets to the Whiteshell, the threat of precipitation will likely be over.

Saturday looks to be a gorgeous day as sunshine once again dominates across Southern Manitoba and highs climb to around 25°C. Things will turn a little more unsettled overnight on Saturday as an area of rain blossoms over Southern Saskatchewan and heads our way. The exact location of the rain is still uncertain, however best indications are that we’ll see a cloudy day across much of the Red River Valley, with the bulk of the rain passing north of Winnipeg through the interalke region, with only a chance of showers for Winnipeg and areas south. It will certainly be a system to keep an eye on as the weekend progresses.