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WELCOME
TO
STEVE'S
WEATHER CHANNEL
http://www.bom.gov.au/
Australian Bureau
of Meteorology Homepage
INDEX
STORMS
+ LIGHTNING
& THUNDER + CLOUD
+ WIND
+ RAINBOWS
& HALO + GREENHOUSE
& OZONE + FORECASTING
+ MISCELLANEOUS
Typhoons. How they work? Why they start? And what's
the difference between typhoons, cyclones, and hurricanes?
ANSWER
If we had a very large
cyclone or anticyclone heading at high speed for the equator
ANSWER
The size of the systems that
are affected by Coriolis?
ANSWER
We were discussing cyclones
in the office today. Is there a max. theoretical windspeed obtainable for
a cyclone as we know them on earth today?
ANSWER
Can Cyclones then move closer
to the equator after forming ?
ANSWER
What is needed for it to
hail?
Hail
Why does the sky go that strange greenish colour
before it hails?
ANSWER
Why do cold fronts (storms)
arrive mostly late afternoons on the east coast ?
ANSWER
When you look at a water
spout. what is it?.
ANSWER
Can anybody settle a drunken
argument about raining frogs? Are there any documented cases of raining
frogs and if so, HOW?
ANSWER
What would happen if a plane
flew through a cloud that contained hail stones?
ANSWER
Assuming the wind is blowing
in all directions, which way of holding your umbrella keeps you
drier:
1) Holding the umbrella in a vertical position.
2) Holding it
so that it is resting on your shoulder at a slight angle like holding a
parasol.
ANSWER
Why do I get depressed and
get tension headaches before a storm? Is it the air pressure? Why does
this affect my mood and not everyone else's?
ANSWER
For those with an interest in
weather, the USA now has a system for analysing expected rainfall rates
from satellite images. Images of billow clouds caused by Kelvin-Helmholtz
instability
ANSWER
What causes the smell of
rain?
Chemicals in soil.
smell
of rain
smell
of rain.
Lightning &
Thunder?
ANSWER
Also what is the signal for a
raincloud to dump it's load, and do they 'rain' themselves
out?
ANSWER
Having taught that lightning
goes from clouds to the ground for so many years, I was surprised to hear
whilst watching a documentary on lightning that this is not the case.
Apparently, most lightning goes from the ground to the clouds. Can anybody
give me a reason why this is so?
ANSWER
What factors/things/etc
determine whether lightning is 'focused', like the one in the image, or
really 'forky', or more 'widespread', like sheet lightning? Can the
pattern of lightning change between different types in one storm, or
throughout the course of storms that occur close
together?
ANSWER
I was listening to a thunder
storm last night. If the lightening hits close you just get one loud short
crash. If it is far away you start with a low rumble that increases to a
crash then ebbs off with a low rumble again. I assume the cause is that
the distance amplifies the difference in time that different sound waves
arrive. Is this because certain pitches (length) of sound waves travel at
different speeds or is it because for the waves travelling at different
speed through different atmosperic presures and arriving at different
times. My other thought was echos but that doesn't really gel because the
low rumble crash low rumble is very uniform with regardless of where you
are.?
ANSWER
We haven't had a good
lighting show over here in the west for some time?
ANSWER
There was this long,
reasonably thin cloud out to the east, and it was flashing. It looked just
like lightning except it was only within the cloud. It was only lighting
up a section of the cloud at a time, but seemed to jump to other parts of
the cloud. I would describe it as 'horizontal lightning'. There were other
clouds around but only this one was flashing, and the lightning was
confined only to the cloud, it wasn't like normal lightning were you see a
bolt, this seemed to be more like a ball within the cloud. It was so cool,
I sat out there for ages, but what I really want to know is what's going
on there?
ANSWER
If you're in an inground
swimming pool and lightning strikes nearby or a tree or lighting pole,
would you get electrocuted?
ANSWER
I have heard of several
instances where the dead wood of trees that have been struck by lightning
does not burn.?
ANSWER
I know that lightning is
attracted to the negative charge of the earth, but would it be possible
for a transatlantic flight to be hit by lightning above the
clouds?
ANSWER
I would imagine a
thunderstorm never happening in a dry, low humidity
environment?
ANSWER
Can someone explain how large clouds seem to be quite
flat on the bottom when you look at them? There was often HUGE inverted
cone-shaped thunderstorms, over 50 miles across. The tops were a fair bit
bigger than the lower parts
ANSWER
What is
Australia's windiest city?
ANSWER
Why is Australia so dry?
Anything to do with El Nino?
ANSWER
Is Wind Burn real
?
ANSWER
On Earth, is there an upper
limit to how fast wind can travel. Tornadoes excepted
ANSWER
As I understand, air from a
high pressure region surges towards low pressure regions. However, because
of all the flat surfaces on buildings and man-made structures, is it
feasible to say that this has any effect on the high-low shift of air? The
air getting trapped in all the nooks and crannies of the houses, and the
air "sitting" in such areas for a longer amount of time, could this affect
the movement of air?
ANSWER
Why are there such strong
westerly winds on the east coast especially in late winter
ANSWER
Why does the air feel cool
when you drive along in your car with the window down? (assuming no AC)
Surely the air is the same temperature outside the car. Any
ideas?
ANSWER
Atmospheric
Optical Phenomena
What causes a
rainbow? Why are rainbows curved?
Reflection and refraction
in water droplets.
Rainbows.
There was a large ring around the moon. can anyone
explain this phenomena?
ANSWER
Rainbows-how
are they produced? Scientific American explains how.
In Brisbane, at around 3:40 pm, there was a partial
rainbow about 15 degrees to the north of the sun, with the sun at its
centre. Can anyone explain this phenomenon?
ANSWER
Min Mins lights Does anybody
know the scientific reason behind these things?
ANSWER
Does the Antarctic have an
aurora and would it under extreme solar activity be visible from central
NSW & St Elmo's Fire
ANSWER
Is global
warming a hoax?
Global
warming?
Global
warming
Global
Temperatures
Global
warming
Polar
melt and freeze.
Greenhouse Effect Is
this upper atmospheric warming taking place or not?
ANSWER
Greenhouse
Effect
Is the ozone hole is actually
over Australia for certain periods? I've look casually at the uv index's
and it seems to be always in the high to very high range?
ANSWER
Are you more likely to get UV
skin damage in Queensland because you are closer to the equator or in
Tasmania because you are closer to the hole in the ozone
layer???
ANSWER
How do
meteorologists forecast the temperature for the coming
days?
ANSWER
Global wind patterns
explained.
World
wide weather
How accurate are they,
really?
Accuracy
of Weather forecasts
What type of
model is used in weather prediction?
Weather
models
Is there anywhere on the
Bureau of Meteorology (or other weather sites) where I can get a chart of
monthly average rainfall, windspeed, temps etc for a particular region or
state? Like a little bar graph thingy I guess.
ANSWER
Why do we look to the West
for signs of what the future weather will be? In other words, what causes
our weather to march across the surface of the world from West to
East?
ANSWER
Pink sky in the morning,
shepherds warning
Pink sky at night, shepherds delight
is this true,
and if so why?
ANSWER
One thing that have me
puzzled is when the weather forcaster says "no rain for the next 4
days,...barometer falling.." I always thought that when the barometer is
falling, that means rain is on its way?
ANSWER
What credence does the Bureau
of Meteorology place on the long range forecasting of Hayden Walker et al
ANSWER
Is it true that the temperature is coldest right
before snow falls? If it's true, why?
ANSWER
Why do ants come out and run
around crazy when it is going to rain?
ANSWER
Can someone please settle
this argument I've been having with a friend... When it rains, is that
"classed" as 100% humidity?
ANSWER
Just how do clouds stay
aloft? I thought water vapour was heavier than air.
ANSWER
And when the rain does fall,
what is the shape of the falling raindrop, spherical, oval,
teardrop?
Do all raindrops fall at a uniform velocity?
When the rain
hits the ground, are the raindrops of uniform size?
If not, what
factors influence the weight of raindrops, and the standard deviation of
their weight?
ANSWER
Is it true you can only catch
fish on a high pressure?
ANSWER
Is there any definite proof
that cloud seeding works as claimed.?
ANSWER
Recently on a foggy day the
fog turned pink and purple. Does anybody know why?
ANSWER
Why is it colder at higher
altitudes?
Why
is it colder at higher altitudes?
I
was watching a documentary on people climbing Mt Everest a couple of days
ago, and it suddenly struck me that the peak of the mountain was covered
in snow & ice, and I couldn't immediately figure out why .... Up at
the 29,000' odd of Mt Everest, liquid water could not exist, so there must
be only ice crystals floating around in the clouds. No doubt some of them
would stick to the rocks, but they'd have to be very dry at that height,
so how could so much ice & snow accumulate up there?
ANSWER
The question should not be
"why does it get colder as you get higher in the atmosphere" but "why does
it get warmer as you get lower in the atmosphere". If you ask the second
question rather than the first you are halfway to an
explanation.?
ANSWER
Why does it get colder in the
wee hours. Why is it coldest at dawn?
ANSWER
Why is the sky
blue?
Rayleigh scattering of light.
Blue
sky.
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