Weather Banter - Second attempt (thanks Google)..Percentage of time raining?

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Second attempt (thanks Google)..Percentage of time raining?

First the reason for my question....

I ride a motorcycle and try to avoid getting wet. I usually decide to
use the bike or car on any particular day after checking the day's
weather forecast. I have noticed that there are many days when I have
opted for the car, but would have stayed dry had I chosen the bike.
So, if I ignored the forecast completely and used the bike every day,
what are my chances of staying dry? Actual rainfall amounts are not
so important as even small amounts of rain can give a soaking once
riding in traffic at speed. The question....

Are there any records for rain hours in any particular location in the
same way that sunshine hours are recorded?

I suspect not, but would be interested if there are.

--
Steve R.
Swansea

Second attempt (thanks Google)..Percentage of time raining?

wrote in message
ups.com...
First the reason for my question....

I ride a motorcycle and try to avoid getting wet. I usually decide to
use the bike or car on any particular day after checking the day's
weather forecast. I have noticed that there are many days when I have
opted for the car, but would have stayed dry had I chosen the bike.
So, if I ignored the forecast completely and used the bike every day,
what are my chances of staying dry? Actual rainfall amounts are not
so important as even small amounts of rain can give a soaking once
riding in traffic at speed. The question....

Are there any records for rain hours in any particular location in the
same way that sunshine hours are recorded?

I suspect not, but would be interested if there are.

--
Steve R.
Swansea

About 8% (higher in the NW lower in the SE)

Second attempt (thanks Google)..Percentage of time raining?

Russel Sprout wrote:
wrote in message
ups.com...
First the reason for my question....

I ride a motorcycle and try to avoid getting wet. I usually decide to
use the bike or car on any particular day after checking the day's
weather forecast. I have noticed that there are many days when I have
opted for the car, but would have stayed dry had I chosen the bike.
So, if I ignored the forecast completely and used the bike every day,
what are my chances of staying dry? Actual rainfall amounts are not
so important as even small amounts of rain can give a soaking once
riding in traffic at speed. The question....

Are there any records for rain hours in any particular location in the
same way that sunshine hours are recorded?

I suspect not, but would be interested if there are.

--
Steve R.
Swansea

About 8% (higher in the NW lower in the SE)

Your chances of staying dry cannot be improved by buying a set of waterproof
garments?

--
Gianna

http://www.buchan-meteo.org.uk
* * * * * * *

Second attempt (thanks Google)..Percentage of time raining?

On 17 Aug, 17:37, Gianna wrote:
Russel Sprout wrote:
wrote in message
oups.com...
First the reason for my question....

I ride a motorcycle and try to avoid getting wet. I usually decide to
use the bike or car on any particular day after checking the day's
weather forecast. I have noticed that there are many days when I have
opted for the car, but would have stayed dry had I chosen the bike.
So, if I ignored the forecast completely and used the bike every day,
what are my chances of staying dry? Actual rainfall amounts are not
so important as even small amounts of rain can give a soaking once
riding in traffic at speed. The question....

Are there any records for rain hours in any particular location in the
same way that sunshine hours are recorded?

I suspect not, but would be interested if there are.

--
Steve R.
Swansea

About 8% (higher in the NW lower in the SE)

Your chances of staying dry cannot be improved by buying a set of waterproof
garments?

--
Gianna

http://www.buchan-meteo.org.uk
* * * * * * *- Hide quoted text -

- Show quoted text -

This is a weather related query, not about how to stay dry on a
motorbike. The long preamble was just the thought process that led me
to the question. Having ridden bikes for 30+ years I am well aware of
the exsistence of waterproof clothing. Sorry if I confused you.

--
Steve R.
Swansea

Second attempt (thanks Google)..Percentage of time raining?

Are there any records for rain hours in any particular location in the
same way that sunshine hours are recorded?

Yes, of course; it's quite easy to analyse using AWS data too, and I
did this for a note in COL a couple of years back from which the below
is adapted. (It's easier to see with graphs ... ) Data was for my own
site in Berkshire for the 10 years 1994-2003.

Looking at the figures by month of the year, the percentage of hours
where 0.2 mm or more was recorded range from below 4 per cent for many
hours in July (a little over once per month on average) to 19 per cent
around dawn in November (about six days in an average month). Over the
year as a whole there is a very pronounced bi-diurnal variation in
rainfall frequency, with minima at 00h and 10h GMT and maxima at 04h
and 16h. These coincide exactly with the daily peaks and troughs of
the bi-diurnal curve in barometric pressure. The afternoon peak in
rainfall frequency is larger and broader than the overnight peak, and
is clearly the result of an increase in convective rainfall: there is
a particularly sharp increase in the frequency of rainfall between 12
and 13 GMT. The variation is significant - in the hour commencing 00h
it rained on 315 hours in 10 years, whereas at 16h it rained on 372
occasions, almost 20 per cent more frequently.

When it is considered that these figures relate to the chance of any
part of the hour receiving 0.2 mm of rainfall, and that more often
than not any rain that falls will not be continuous for the whole
hour, it can be seen that in southern England at least the chance of
intercepting measurable rain in a short period at any particular time
of day is quite small - about 3 per cent or once per month on average.
You're also likely to get wet less often in the morning than in the
afternoon.

When considering the diurnal variation in rainfall *quantity*,
however, there is a single daily broad afternoon peak. This is what
would be expected from an increase in convective rainfall at the time
of peak heating; the hour commencing 1500 GMT had, over the 10 year
analysis period, considerably more rainfall than any other hour, and
the rainfall totals for the hours 1300 to 1900 GMT are higher than for
any other hour in the day. There is a very sharp fall-off after 2000,
and little variation overnight - in fact, the overnight peak in
rainfall frequency is not evident at all in the rainfall amounts.

The average *intensity* of rainfall (mm/hr) for all those hours with
rainfall over the 10 year period varies significantly: although
rainfall is almost as frequent at 04h as it is at 16h, it is lighter -
typically 0.8 mm/h compared with over 1.1 mm/h at the afternoon peak,
an increase of almost 50 per cent.

So July mornings look to be about the best bet; November afternoons
I'd take the car, I think.

The figures will vary with location, of course, and the detail will be
different for South Wales, but it does give the general picture to be
expected in our climate zone. HTH.

Stephen Burt
Stratfield Mortimer, Berkshire

Second attempt (thanks Google)..Percentage of time raining?

On Aug 17, 11:00 pm, Gianna wrote:
Weatherlawyer wrote:
Gianna wrote:
wrote:

Your chances of staying dry cannot be improved by buying a set of waterproof
garments?
This is a weather related query, not about how to stay dry on a
motorbike. The long preamble was just the thought process that led me
to the question. Having ridden bikes for 30+ years I am well aware of
the exsistence of waterproof clothing. Sorry if I confused you.

No problem. I wasn't confused (-:

Are you sure?

Yes, Michael. I am sure (-:
If you read the whole thing carefully, you will see my point.
When are you sending me the work you said you would send?

I sent it ages ago. But it needs rewriting all over again. Hurricanes
go with low cloud over the UK and an inclination to fog whilst Asian
and I think Mid Pacific Super Cyclones bring those striated cylinders
of hail and well, generally what we've had for the last few months.

Which opens the door to a reworking on the times thing. So, not only a
thaumaturge but a time lord.

Not that I deserve the promotion. Not that I intend to refuse it.
Still, if it were easy we'd all know how to do it.

Second attempt (thanks Google)..Percentage of time raining?

Weatherlawyer wrote:
On Aug 17, 11:00 pm, Gianna wrote:

When are you sending me the work you said you would send?

I sent it ages ago.

I did not receive it.
I will send e-mail to ensure correct addressing.

--
Gianna

http://www.buchan-meteo.org.uk
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