And that wicked honey pass on real a giant cigar in the sky
Rain, so heavy, it sends eels swimming through the streets skills
And a sunset stops traffic in New York
There's always been weird weather, but today
Thanks to the smartphone more and more of these crazy. Events are being captured on camera
What they are going now look at me Chico
Today I'm going to be showing you some of the craziest clips yet
And demonstrating the simple science that lies at the heart of these astonishing
natural phenomena
Welcome to the world's weirdest weather
Here in the UK when it rains heavily
We say it's raining cats and dogs outside and other countries have their own versions like it's raining chair legs oh
It's raining cobblers knives or pocket knives. I've never heard anyone say it's raining spiders, but maybe they should
Take a look at this
Santo Antonio Platina southern Brazil February 2013
The sky is full of spiders
Thousands of them swarming to form a cloud
It's in a ratna phobes
The freaked out on lookers think it's raining spiders, but it's not in fact
This cloud is a giant communal web
apparently strung between powerlines and its natural behavior for this species, but don't get too comfortable because
elsewhere spiders can and do get tangled up in the weather is
people in Dallas, Texas
discover
There were spiderwebs on the streetlights
They're hanging off the trees when they were blowing out they were about 12 to 14 feet long
It was absolutely crazy everything
I mean everything was covered in spider webs
North Texas is tangled in sticky spider webs. They're stuck to lampposts cars
And everything else they touch
On a scale from one to ten of strangeness, I would say this was about a
twenty-one
and
How they got there is even stranger?
They hits a lift on the wind
Many species of spiders actually used their webs to fly on the wind it's called ballooning
Spider ballooning is most often seen in young spiders
And they use it as a way to spread out over long distances and find new habitats
These special webs act like sails
So only takes a slight breeze to get the spiders airborne there they go
By taking advantage of the weather the Texas spiders may have traveled hundreds of miles
There's not just the wind that helps our eight-legged friends take on
Physicist Joe Dwyer explains how spiders can fly
using lightning
So the earth actually forms this electrical circuit called the global circuit. It's energized by thunderstorms
when a storm cloud forms
Positively and negatively charged particles within the cloud are separated
This separation creates static electricity which can be discharged in the form of lightning?
But some of this static electricity is not
discharged it remains in the atmosphere even if there are no thunderstorms around there still large-scale electric fields are always there a
Spider's web can pick up a few of these charged particles
Just like in a magnet like charges repel each other
Because the particles on the web have the same charge as the particles in the air
The web is pushed away and the spider flies
Now if you're very light like a little spider
Then is possible if you have enough charge on you or on your little web
To float or to rise in such electric fields Joe has prepared a simple demonstration
to show how this works I
Made some homemade spiders
These are actually little Halloween spiders, I've taped pieces of mylar on the end to represent the webs
So I'm going to take one put it on top of the vandegraaff machine it will develop a big charts
Turn it on
And away it goes
So the charge in the web
Causes the web to rise up in the Earth's electric field taking the spider with it
So next time you see a spider floating pass on a windless day
Just remember you could be witnessing the power of the Earth's invisible electric field
We've all heard of Movember the month when thousands of men across the UK grow a mustache in order to raise money for charity
but what I bet you didn't know was that sometimes the weather joins in to
Patagonia, Argentina a
Strange cloud drifts across the sky, it looks like a 1970s disco -
After about 30 seconds it disappears is a fleeting glimpse of one of the world's rarest clouds a
mustache cloud
Cloud expert gavin Preta penny describes what makes these curious clouds so unique?
moustache pads can be quite thin and rope like the
upside-down
Crescent appears to
almost rotate
Because it forms within a vortex of air
It's this vortex that makes moustache clouds so rare as the conditions must be absolutely perfect to create one a
rising column of air a thermal encounters wind shear and this cause is the column of air to
curl over and
develop a vortex
If you imagine a waterspout or a tornado, that's a vertically orientated
Spinning column of air well in this case it's horizontally aligned
But whereas the tornados vortex has a strong powerful rotation mustache clouds are much weaker appearing and disappearing
within a matter of seconds
They appear without fanfare the massage curls around
Twirls and rotates and then just evaporates into the blue
It's rare to get a photograph even rarer to get a video of them that makes this video from Patagonia
Truly exceptional a rare moving image of one of the rarest clouds in the world
Weird weather isn't always as obvious as a funny-shaped cloud, or a freak snowstorm
Sometimes we only know it's happened because of the effect that it has on the natural world around us
Just like in our next story
Qingdao, China
This once beautiful babe was selected to host the sailing events at the Beijing Olympics
But over the last decade it's become more famous for its annual invasion by a sprawling green blob
Because extends to one kilometer you can't escape the slimy green
Intruder is a kind of algae called sea lettuce
So what's all this got to do with the weather well in the springtime
Heavy rainfall washes fertilizer from the surrounding farmland
And it all ends up in the sea weather algae go mad for it
reproducing like crazy and filling the
This surf come turf is a harmless nuisance
But on the other side of the globe and altogether different green tide is a deadly threat the waters dream
Not just a little green
It's like pea soup green in
2011
satellite images show Lake Erie turning green with algae
as record rainfall drains fertilizer into this North American landmark
Zen Archer a lakeside local from Cleveland, Ohio is a witness to this mega bloom
I've lived in clione Cleveland all my life, and I've never seen anything like that in a lake before there is
Nothing but green
yucky
algae
Everywhere unlike the harmless sea lettuce in China
Ohio had been invaded by a killer
blue-green algae
Blue-green algae or cyanobacteria
Produces a toxin called micro system that can irritate the skin and attack the liver causing illness and
sometimes death
Lake Erie is the shallowest of the Great Lakes this allows the Summer Sun to raise its temperature
More easily than its deeper neighbors
creating a cozy haven for amorous algae to get it on and
In 2011 the conditions were simply perfect
It had been rainy, but also very very warm combined not a lot of wind or air
Resulted in this algae
proliferating and filling the water
This isn't a problem. That's going to go away easily
Spring times are getting wetter and summers are getting hotter
So as long as farmers keep using fertilizer the green goop will keep on coming back
Coming up next what happens when a mountainside dissolves
And a tale of two cities as the Sun sucks traffic in London and the wind wipes out a lakeside resort
Walter is in the only fluid that marches to the core of gravity
Sometimes the forces that hold together a landscape like this one can become unstable
Turning solid earth into a fluid mud in the blink of an eye, and the results can be terrifying
Fergan Austria August 4th 2012 a
Violent torrent of mud shatters that piece of an Alpine son
Vn heart as my witnesses the terror
Suddenly there was this huge sell
Everything was shaking everybody was shouting outside. It's a much like it's a much like the summer of
2012 seems weeks of baking hot weather that dries and hardens the ground in the mountains above
Then a sudden rainstorm breaks this material loose it
tumbles downhill picking up debris
Until it's a river of mud and boulders as big as cars
Perched on a rooftop being hard captures the enormous must light
Mudslides happen when fine particles of Earth in a slope become unstable either by
Drying out too much like what happened in Austria or the opposite effect too much water
Which causes them out to swell until it can't hold itself together any longer in both situations
The greatest danger is to the people that live below
Because the flow of the mud can pick up huge rocks and boulders on the way down
And of course the steeper the slope the faster these rocking projectiles bounce down the mountain
You can imagine two of these coming towards you at 50 miles an hour
Despite the danger being hard keeps filming
It was like watching a movie, but you are part of the movie
The three-hour torrent leaves buildings coated with a thick layer of mud
Amazingly, no one is seriously injured
The mudslide triggered the Alpine town avalanche warning system
Giving the residents are precious few seconds to get out of the mud slide path
The nature is - it's the most powerful thing in the world and the humankind is just a small spot in it
It's not just the countryside
That's threatened by weird weather big cities like London can suffer - in September
2013 the combination of a sunny day and
architectural design
Made one part of the city a little too hot to handle
It all begins as a typical summers day
But on one corner of the city it gets so hot a car starts to buckle and melt
Nearby a shop door Matt gets scores and a plastic window displayed bubbles and warps
How can this happen in London, but a city's highest recorded temperature is 38 degrees?
The answer lies with a newly built skyscraper known locally as the walkie talkie
Thanks to its distinctive curved shape
What was happening in London was similar to what I'm doing here the magnifying glass is
Concentrating the sun's rays down to a single point on the paper
And that's what was happening to the building it had a mirrored outside and a concave shape
Focusing the sun's rays down to a single point on the pavement
Unfortunately that was where the car was parked
And believe it or not the temperature saw 290 degrees centigrade almost hot enough to boil water
and
definitely hot enough for a
traditional British fire
cooked in a less than
traditional way to call things down the
Walkie-talkie or walkies score cheap as it's now being nicknamed is going to be given a giant sunshade
making our fresco fry apps a thing of the past the
Effects of the solar death ray in London were short-lived
But some weird weather can leave a lasting scar
like our next story
Epic when Argentina
in November 2011
curious sightseers photograph a ruined City recently emerged from beneath the waves of Lake epic when like an eerie
Argentine Atlantis
Flashback to the 1960s and 70s and it's a very different picture
epic when is a buzzing lakeside resort then in
1985
Disaster strikes a sudden flood engulfs the town under more than 9 metres of water
The cause a single rogue wave that smashes through the towns flood defences like a tsunami
We usually associate big waves with this sea and not legs, but there is a simple explanation
Now we would have all done this before
In the bath if you rock back and forth
Just the right speed you can create a wave that travels the length of the bath
And we all know what happens eventually all the water
Goes over the side
well in Argentina
It wasn't a bather that created this big wave but the wind it came from just the right angle
Just the right speed and created a wave called SH
Wind driven safe waves can happen anywhere the conditions are right even in a swimming pool
Getting bigger and stronger with every surge
The 1985 space wave that destroyed epic when got so strong it smashed through the dam that protected the town
with no
Defenses the wave surged through the town destroying it completely
The authority
He's quickly realized it was easier to
Abandon the buildings and rebuild the protective dam so the houses were left knee-deep in water
The residents found the new homes and the resort became a ghost town
the nearly quarter of a century
Epic wind is lost but since 2009 the town has been making a comeback
Inch by inch the waters have receded to reveal a haunting reminder of the strange and sometimes
savage power of the weather
Most people see a cloud every single day of their lives
If you live in the UK you get to see a fair few more
But it's not often that you see a cloud that makes you stop instead and that's exactly what happened in the u.s.. In 2012
Sea Isle City, New Jersey
June the 7th
2012 an
Ominous cloud looks like an advancing apocalypse
It looks like a real bad boy
In fact it's a rare role cloud
Very unusual huge clouds
Whenever and wherever roll clouds appear they certainly capture people's attention
In a wicked honey ass on real
Cloud expert Gavin Preta penny
explains how these ominous clouds form
Roll clouds look like a long tube of cloud which can stretch from one horizon?
To the other and it's quite low down in the sky now these clouds can form out
Ahead of a storm and as this cold air splays out it burrows beneath
the warmer
Moister air that's ahead of the storm, and as it burrows beneath that air
It causes the air to rise and curl over so the air at the front of
The roll cloud is rising the air at the back of it is sinking
this rising cooling and falling cycle condenses water vapor into droplets of liquid water
forming a visible cloud
at the same time the advancing cold front all dozes this cloud forward creating an
Invisible wave of air that rolls the droplets up into a distinctive cigar like shape
Roll clouds might look dangerous
But they're not at least not to us on the ground but about for anyone who ventures closer
in October 2011
hang-glider Jon Hesh finds out in a close encounter with one of these
meteorological giants above the coast of Southern California that
day was special because I watched the cloud grow and developed and extend all the way up here and
Flew it for an hour and watched it dissipate and disappear the cloud doesn't hurt Hesh
In fact it helps him to defy gravity
When we fly a hang glider we're constantly sinking at 200 feet a minute
But when the wind blows hard enough it counters that sync rate and we can fly around as long as the wind blows
At the front edge of the roll cloud is an updraft
So long as Heche stays inside it the rising air will keep him airborne
It's a visible highway in the sky it defines the lifting area. It's close to being a bird as I know
When they appear it's it's a magical afternoon
Magical maybe but judge it wrong and you could be in for a crash landing
Lifting air is something that gliders live for if they stay in front of the role than they are in
consistently rising at the problem is they also can be rather dangerous because
if you find yourself in the back of
That wave of air that's where the air is sinking again
If you don't know what you're doing when you are hang gliding around one of these clouds
You could really get yourself into a lot of trouble
Still to come volcanic steam Devils eels hit the streets of New Zealand
And a tropical paradise turns, white
When it rains the natural thing for you, and I to do is some run indoors and take shelter
But I know one slippery creature that takes it as an
Opportunity to come out of hiding and do it a city site Singh just take a look at our next story
Masterton, New Zealand March
2012 a quiet street
becomes an outdoor aquarium
The street is swimming with slippery freshwater eels Kiwi local Jermaine pyrrha
He captures the bizarre events on camera
When I got here, it was actually eels
Swimming and the gutter I look down to my left. There was a couple down there
There was a they were actually swimming on the footpath
When we got out and actually saw that there was beetle swimming around there was a bit of a shock so first first time
We've ever seen it in the streets
How did a dozen eels slither into a suburban street?
It's down to an exceptionally heavy rainstorm. I
Just remember the night before it actually it was raining
at least 24 hours and lon Stockton
It normally takes days of rain to flood the streets this badly, so what was going on in New Zealand?
the answer three crucial ingredients
The first ingredient that you need is a thundercloud
the second thing that you need is for that thundercloud to be holding a
vast amount of rape
and finally you need that song to unleash all the rainwater onto a small area in a short space of time a
Weather event like this in New Zealand is called a weather bomb
When a weather bomb explodes it can trigger a flash flood so much water for so quickly it
overwhelms the drainage system
the drains overflow and water surges into the streets a
Really torrential flood can flush out anything and everything that floats
including living creatures
They actually came through the strain here
The strain runs to a Creek at the back of the house that my grandmother lives on
Most of us would be freaked out, but - jemaine's grandma. They're not scary. They're lunch
My Nana, she was encouraging us to girthier catch them so she could eat them
But she's old school, so she was she was kena ever have a nice feed. Eel
Luckily for the eels Jermaine has other ideas
Instead of cooking them he releases them back into the local Creek
Is the eels people pause are you releasing them we didn't eat them
So next time it rains don't forget your umbrella and fishing rod
Volcanoes are known as a force that shapes the landscape, but they can also shape the weather and
Sometimes the results can be breathtaking
The Kilauea volcano Hawaii as tourists was lava pure into the Pacific a
Twisting vortex piled up from the ocean. It looks like a mini tornado, but there's not a storm cloud in sight
the killer where tornado is actually a steam devil a type of whirlwind that forms over warm water or
damp Landers steam rises into cold air
at the Denver Museum of Nature and Science
Creator Jennifer Moss Logan shows how this works what we have here is a box it has slits in the side
to allow air in
Right here is a hot plate and on the hot plate or coins those coins represent the lava
What I have here is a little tin of water this water represents the ocean water
Let's see what happens when we add the ocean water to the lava
Water meets hot lava it turns to steam this starts to mix with the cold air around it
More air is drawn in from the surrounding area creating a circular air current that spins the escaping steam
Rising column of steam that's the vortex the air is rushing in and circulating around
And causing that that beautiful vortex that is our steam devil
Kilauea steam Devils grow so big and strong that it can often be mistaken for water spouts
But there is an easy way to tell them apart water spouts formed from cloud, so if you follow them up
You'll see the cloud that made them whereas steam Devils are simply generated by warm damp air rising
so if you see a twister out at sea and at a cloud in sight the chances, are it's a steam devil and
You don't have to travel to Hawaii to see one steam Devils
occasionally form over lakes and rivers like these ones dancing across the surface of a river in the US
They form in the same way as the ones at Kilauea the only difference is here
It's the Sun that heats the water and not hot lava
Steam Devils may be weird, but they're also beautiful
Sometimes it's not the weather. That's weird. It's where it takes place. Just like our next story
Malua Bay, Australia
October the 14th 2013 it's a warm 30 degrees and residents are enjoying the beach
But the next day they wake up to an unbelievable sight the bays Beach looks like it's being blanketed in snow
My feet are going numb. I think we should go Hey a huge storm has struck overnight sending temperatures plummeting
So what was going on? Well the first clue is what fell on the beach?
Well look like snow was actually a thick layer of hail
Hale is rain that freezes as it rises up inside a storm cloud
Storm clouds form when hot moist air surges upwards
But along the coast cooler ocean temperatures mean the air is rarely hot enough to spawn a storm cloud
So why does Manila Bay get negative by hail?
Thunderstorms in Australia at that time of year aren't uncommon
but what was very unusual is that the thunderstorm was so big with so much hail and
So close to the sea it seemed incredibly unlikely
Something else must have triggered the weird weather and that something was raging further inland
In surrounding New South Wales soaring temperatures spark over 70 wildfires
Wildfires heat the air around them causing the air to rise very rapidly
And in Australia all their air rising from the wildfires
Powered up the thunder clouds making them much much stronger and the convective currents helped them to produce a lot more help
And once the clouds cleared the fires they dumped this massive help right on the beach
Turning this Surfers Paradise into a winter wonderland
Coming up next on the world's weirdest weather the Sun stops traffic in New York
Whirlpools, so big you can only see them from space
They're very big. They're very powerful you have no choice, but to go with the flow
The sculpting power of the wind
And could this
The earth's most powerful lightning
Weird weather can disrupt our lives a mudslide can wipe away a whole community and
flash floods can bring a city to its knees
But there's another type of weird weather that can stop traffic for very different reasons
New York July the 13th 2012 a crowd gathered
Natural wonder
Astrophysicists Chucky faculty explains what happens
People just sort of randomly stumbled upon
All looking in the direction of New Jersey to the west
on two days each year
the Sun lines up exactly with Manhattan's dead straight east-west cross streets
The result is a sunset that New Yorkers called
Manhattanhenge
So from this spot, you just look straight
West past Times Square the Sun sets right between these
Breathe perfectly we gotta go by this time right they're using the grid as it fit
Manhattanhenge is named after our own
stonehenge and you don't have to be a druid to know the stones line up with the Rising Sun on the longest day of the
year
But while Stonehenge is solar alignment is an ancient mystery
Manhattan's is just a cosmic coincidence
At nearby Rutgers University
physicist David Mayu low explains why
Here's our model of the setting and Rising Sun
and
This is our homemade model of Manhattan. We all know that the Sun appears to rise in east and set in the West
But it's actually more complex than that
Towards the summertime the Sun appears to move towards the north and towards the wintertime the Sun appears to move towards the south
it changes its position along the horizon as
The Sun moves north through the winter and spring it lines up perfectly with Manhattan's crosstrees around the end of May
Then after the longest day of the year in June the sunset starts to move south
Setting in line with the grid around mid-july
Twice a year the setting and Rising Sun
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