'Monster' Manitoba tornado leaves storm chaser on 'adrenalin kick'

Professional storm chaserGreg Johnson calls Monday night's tornado in Manitobaa "monster" and among the top four that he's ever seen.

The Regina-based host ofthe CMT show Tornado Huntershad a front-row seat, within 100 metres, of the twister. For about 20 minutes, he watched as the tornado thundered through fieldsjust north of Pierson, a small community in the southwest corner of Manitoba.

• Tornado touches down in southwest Manitoba, lasts nearly 3 hours

The twister was constantly shifting, morphing into different formations in an impressive display, Johnson said.

"At one point it was a perfect stovepipe-type tornado. At one point it was a kilometre-wide wedge tornado. And then there were a number of times where we could see upwards of five, six, maybe even seven little fingers dropping out of the bottom of it," he said.

"If you can imagine braiding someone's hair and those braids all intertwining with each other, that's what was happening with this multi-vortex stage of the tornado.It was incredible [and]the part that's so amazing is that no one was seriously injured. To me it's a bit of a shock."

The tornadobrought down trees, fences, hydro poles and power lines, as well as damaged a number of farm buildings in the area. Debris was reported from Tilston north to Virden.

No injuries have been reported to date,officials with Environment Canada told reporters onTuesday.

Witnessed 3 tornadoes

That tornadowas actually the third one Johnson and his groupsaw. The first two were fairly short, lasting only a few seconds "then this monster touched down," he said.

"The wind intensity was so strong that there were parts of Highway 256 in the southwest part of the province that literally had the asphalt stripped off the road's surface," he said. "I'm still on an adrenalin kick right now, I'm notgonnalie."

After chasing it for a while, the tornado becamerain wrappeda storm chaser term for "no more visuals," Johnson said.

"It's sort of trapped in the rain [and] it got dark. That's a pretty nasty combination and not one that I'm interested in, so we broke off our chase at that point and decided that we had enough."

Environment Canada said the tornado was first reported south ofTilston at 8:28 p.m. CT Monday, about half an hour after tornado warnings were issued for the area.

It was then reported nearReston at 9:55 p.m. and northeast ofVirden at 10:55 p.m.

Meteorologists callit a "rare" event, as radar imagery shows the tornado was on the ground for 2 to three hours. In Canada, tornadoes rarely stay on the ground longer than a few minutes.

"According to radar imagery and according to a number of the reports that we received, the tornado was on the ground for at least two hours and a half, maybe even three hours," said Natalie Hasell, a warning preparedness meteorologist with Environment Canada.

"This is extraordinary. Normally tornadoes are on the ground for just a few minutes, so this was really quite the active system."

The twisterhas yet to be categorized by Environment Canada officials, who are insouthwest Manitoba today to survey the damage and give it a ranking on theEnhanced Fujita Scale,or EF-Scale.

Investigators started surveyingthe damage in and around Virden, where the twister was last seen, and went toTilston on Tuesday afternoon. The weather agency said it may take a while before the tornado can be rated.

However,Johnson ranks it high on his own list.

"I mean we were in Joplin, Mo., an F5. We were at El Reno, Okla., in 2013 the largest tornado ever recorded on Earth. And we witnessed the first ever, twin mile-wide tornadoes on the ground beside each other in Nebraska," he said.

"It's hard to top those events, [but] we were talking about it on our drive last night that this probably number 4 on the list. And the fact that it happened on the Canadian side of the border, it was pretty special for us."