What does Erin put in her forecast?
What are the most important things to put in your weather
forecast? Here are Erin's top tips.
Erin Roberts presents weather
for S4C using the same forecasting data as Weather Labs
Will it rain?
Research shows that people are first and foremost interested in
whether it's going to rain or not, so don't make them wait! A fall
in air pressure usually means that rain isn't far away. Your data
gives you the opportunity to be accurate - what time are they going
to need their brollies?
Humans are not great thermometers. Very few can guess the
temperature accurately. Have a go yourself! We all feel
temperatures differently depending on a range of factors that
include our health, the clothes we are wearing, levels of humidity
and so on.
Here is where you need to make the temperature data come alive.
Compare current temperatures with seasonal averages or with the
previous day - people like to know whether it's warmer or colder
than it has been or than it should be. Check out the UK monthly
averages for your region here: www.metoffice.gov.uk/climate/uk/averages/19712000/
Wind direction and speed
Think about wind direction and speed. Temperature is pretty much
reliant on wind direction in the UK. Consider if the wind is coming
from a colder direction or whether warmer air is moving in. This
gives clues as to how the weather is likely to change over the
coming hours and days. Southerly winds bring us warmer weather
while northerly winds are colder. Westerly winds tend to bring wet
conditions while easterlies tend to bring drier spells. Your wind
data will be expressed in degrees so you will need to calculate the
angles, assuming that 0º is north.
Lastly, don't make your forecast too long.
Research shows that the average attention span tends to dwindle at
around 54 seconds when listening to the weather forecast! Practice
out loud on your friends before recording and listen to their
feedback. Make it as entertaining, as memorable and as local as you
can. Good luck and let us know at Planet Science how you got on! If
your podcast is really good, we will put it up on the site.
Just to give you an idea, your forecast might sound a little
like this when you're done:
"Good morning...hope you're up and ready for the day because
it's going to be a good one, another dry and fine day in Swansea!
The air pressure is up on yesterday bringing us clearer skies. Any
clouds we have at the moment are likely to clear around midday and
with those light 10mph winds still coming from the south it's going
to be warm again.
We are expecting highs of around 23 Celsius in the City Centre
this afternoon, well above the seasonal average but a degree or two
lower in the surrounding areas. Temperatures will fall a little
overnight but it will remain warm and humid with lows of around 15
Celsius, another uncomfortable night on the way. But make the most
of it, it's not going to last. Rain is on the way early tomorrow,
the first showers are likely to hit the city at around 9am. These
could be prolonged and heavy by mid-afternoon and be accompanied by
a significant dip in temperature. We will be back to the seasonal
average with highs at around 18C tomorrow. Not looking too
promising for Swansea City's match, it's likely to stay cloudy and