From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like
a jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Well, I've experienced this in the past mostly near hilly areas. I don't
think anyone really knew, but my feeling is in the static sort of leaking
thought the rain. If you put up an aerial when you have static charged
rain, you can clearly hear the noise as it discharges, and indeed sometimes
feel the static in the air just beforehand.
As you say, most of the other explanations are to do with wind effects,
which I certainly do not accept as that would vary greatly as wind in these
storms is often gusty or cyclonic but short lived.
Was there any hail associated with this storm, as the sound of lumps of ice
whizzing through the air on updraghts has been know to cause eerie sounds in
American storms just before Tornados occur.
Not wnting to worry you of course!

Brian

--
From the Sofa of Brian Gaff Reply address is active
"Harry Bloomfield" wrote in message
. uk...
From around 15:00 through to 21:00 yesterday, we had a bit of a storm. I
recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like a
jet engine roar, which lasted for tens of minutes at a time. I have never
heard the likes of it before and just wondered what mechanism would allow
the noise from the thunder to continue for such a long time and such a
steady noise?

It sounded so unlike thunder, I went out several times, to see if it might
be wind noise or some other locally generated noise. It wasn't because
several others reported the same noise, in the path of the same storm.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Harry Bloomfield wrote:

From around 15:00 through to 21:00 yesterday, we had a bit of a storm.

I wish we had some rain to cool things down, it was still 28°C at 9pm, I
thought I'd seen on the weather forecast a horizontal band of rain due
to sweep up across the whole country ... the late night weather report
showed it as a vertical band the only covered the west.

What was really weird, was the noise from the thunder.

There was a combine working until 02:30 here, I know they really like to
keep going once they've started, but I doubt they'd keep going
throughout a storm?

No when I heard this some years ago, it was in June.
I think its either the sound of the huge upright in towering cumulous with
ice in it, or electrostatic effects multiplied by the size of the storm
cell.
Certainly, nothing to worry about.
The storms that worry me and defy all science are the electrical storms
with almost continuous lightning inside clouds but there is no sound of
thunder at all.
Is there a critical size of spark that causes thunder, as to me any spark
makes a sound, even a little one, as you are suddenly heating up air after
all.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"Andy Burns" wrote in message
o.uk...
Harry Bloomfield wrote:

From around 15:00 through to 21:00 yesterday, we had a bit of a storm.

I wish we had some rain to cool things down, it was still 28°C at 9pm, I
thought I'd seen on the weather forecast a horizontal band of rain due to
sweep up across the whole country ... the late night weather report showed
it as a vertical band the only covered the west.

What was really weird, was the noise from the thunder.

There was a combine working until 02:30 here, I know they really like to
keep going once they've started, but I doubt they'd keep going throughout
a storm?

On 23/08/2015 09:00, Harry Bloomfield wrote:
From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like a
jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

There was a lot of cloud to cloud lightning that was bouncing around
here. Pretty much did for any chance of connecting to the internet. It
wasn't strictly continuous but the storm was so extensive that there was
always some noise from long thunderstrikes reverberating around.

Only superficial flooding of the usual places round here.

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

Interesting how under such very thick cloud the grass looks super green
and red flowers redder but blue flowers look noticeably dimmer.

--
Regards,
Martin Brown

On Sun, 23 Aug 2015 09:00:12 +0100, Harry Bloomfield
wrote:

From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like
a jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

Classic horror movie forked lightning here in N Manchester, Thunder
about 4 seconds delayed at the closest.
It did rain very heavily, but only for a few minutes.

--

Graham.

%Profound_observation%

On 23/08/2015 09:40, Martin Brown wrote:
On 23/08/2015 09:00, Harry Bloomfield wrote:
From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like a
jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

There was a lot of cloud to cloud lightning that was bouncing around
here. Pretty much did for any chance of connecting to the internet. It
wasn't strictly continuous but the storm was so extensive that there was
always some noise from long thunderstrikes reverberating around.

Only superficial flooding of the usual places round here.

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

Interesting how under such very thick cloud the grass looks super green
and red flowers redder but blue flowers look noticeably dimmer.

Could it be the severity and size of the storm, I have heard similar in
Turkey where they have spectacular thunder storms, sometimes it is like
the thunder never stops and I put that down to there being so many
lightning flashes over such a wide area that in between the ones viewed
locally you got the rumble from more distant ones without seeing the flash.

I quite like thunderstorms, and my few close calls have not put me off,
after all if its your day to die, etc. The only issue I had is that now in
later life I have tinnitus, and blame the high db of thunder less than 10
feet away which left me semi deaf for 30 minutes.
Not to be recommended, but then one would not expect it just walking down
the road.
Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Graham." wrote in message
...
On Sun, 23 Aug 2015 09:00:12 +0100, Harry Bloomfield
wrote:

From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like
a jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

Classic horror movie forked lightning here in N Manchester, Thunder
about 4 seconds delayed at the closest.
It did rain very heavily, but only for a few minutes.

--

Graham.

%Profound_observation%

On Sun, 23 Aug 2015 12:45:28 +0100, "Brian Gaff"
wrote:

I quite like thunderstorms, and my few close calls have not put me off,
after all if its your day to die, etc. The only issue I had is that now in
later life I have tinnitus, and blame the high db of thunder less than 10
feet away which left me semi deaf for 30 minutes.
Not to be recommended, but then one would not expect it just walking down
the road.
Brian

The most spectacular storm I ever saw was at sea from a cruse ship.

On the same cruse I got my most spectacular view of the night sky
ever.

Puts you in mind of the ancient navigators.



--

Graham.

%Profound_observation%

On Sunday, 23 August 2015 09:00:15 UTC+1, Harry Bloomfield wrote:
From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like
a jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

We had the same thing only a bit earlier. (W. Midlands)
Lightening pretty well continuous.
Only seen similar in the tropics.

On 23/08/2015 12:33, ss wrote:
On 23/08/2015 09:40, Martin Brown wrote:
On 23/08/2015 09:00, Harry Bloomfield wrote:
From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like a
jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

There was a lot of cloud to cloud lightning that was bouncing around
here. Pretty much did for any chance of connecting to the internet. It
wasn't strictly continuous but the storm was so extensive that there was
always some noise from long thunderstrikes reverberating around.

Only superficial flooding of the usual places round here.

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

Interesting how under such very thick cloud the grass looks super green
and red flowers redder but blue flowers look noticeably dimmer.

Could it be the severity and size of the storm, I have heard similar in
Turkey where they have spectacular thunder storms, sometimes it is like
the thunder never stops and I put that down to there being so many
lightning flashes over such a wide area that in between the ones viewed
locally you got the rumble from more distant ones without seeing the flash.

I think the extent of the storm was large enough that it could have been.

The other noise you can sometimes get in a thunderstorm and it is bad
news if you hear it is a sort of fizzy noise as the air starts to break
down. A strike is imminent and in roughly your location...

Annoyingly the strike doesn't always follow the obvious highest point
path. I was in a building with a large metal roof area underneath a much
higher supergrid pylon that took a direct hit. That is the lightning
went for the building rather than the higher pointy pylon. It was
incredibly loud and did for the switchboard and all mains power.

--
Regards,
Martin Brown

Annoyingly the strike doesn't always follow the obvious highest point
path. I was in a building with a large metal roof area underneath a much
higher supergrid pylon that took a direct hit. That is the lightning
went for the building rather than the higher pointy pylon. It was
incredibly loud and did for the switchboard and all mains power.


Yes its a bugger doing that, we had a very mice microwave unit on the
side of a church the silly thing could have taken the strike up the top
of the spire some 30 meters higher but it came in sideways and that was
that(...

As to the rolling thunder we had the mother of all storms over Cambridge
on the night if the 17th July that went on for 3 hours and there were
reported 200 flashes a minute in the area, continuous thunder it was
too!...


Useful site this one...

http://www.lightningmaps.org/realtime

and


http://www.blitzortung.org/Webpages/...lang=en&page=1
--
Tony Sayer

On Sunday, 23 August 2015 09:00:15 UTC+1, Harry Bloomfield wrote:
From around 15:00 through to 21:00 yesterday, we had a bit of a storm.
I recorded 60mm of rain came down during the course of it and several
properties were flooded at the lower extremes of the village.

What was really weird, was the noise from the thunder. Aside from the
usual crashes, there was a continuous noise, which sounded rather like
a jet engine roar, which lasted for tens of minutes at a time. I have
never heard the likes of it before and just wondered what mechanism
would allow the noise from the thunder to continue for such a long time
and such a steady noise?

It sounded so unlike thunder, I went out several times, to see if it
might be wind noise or some other locally generated noise. It wasn't
because several others reported the same noise, in the path of the same
storm.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Just been down our local pub.
A tornado associated with the event wrecked the beer garden + several large trees.

On Monday, 24 August 2015 17:48:41 UTC+1, harry wrote:

Just been down our local pub.
A tornado associated with the event wrecked the beer garden + several large trees.

yeah that's what the all say, if you get a bit tipsy and run round the beer garden naked just admit to it ;-)

On 23/08/2015 12:45, Brian Gaff wrote:
I quite like thunderstorms, and my few close calls have not put me off,
after all if its your day to die, etc. The only issue I had is that now in
later life I have tinnitus, and blame the high db of thunder less than 10
feet away which left me semi deaf for 30 minutes.
Not to be recommended, but then one would not expect it just walking down
the road.
Brian


You were lucky not to be caught by stray ground current. When I was
standing by our back door, and the house at the end of the garden had
its chimney and back door taken out, about 50 yards away. And that
certainly made us all jump!

In article ,
newshound scribeth thus
On 23/08/2015 12:45, Brian Gaff wrote:
I quite like thunderstorms, and my few close calls have not put me off,
after all if its your day to die, etc. The only issue I had is that now in
later life I have tinnitus, and blame the high db of thunder less than 10
feet away which left me semi deaf for 30 minutes.
Not to be recommended, but then one would not expect it just walking down
the road.
Brian




You were lucky not to be caught by stray ground current. When I was
standing by our back door, and the house at the end of the garden had
its chimney and back door taken out, about 50 yards away. And that
certainly made us all jump!

So it would!. Its referred to as step distance. Consider the earth as a
large conducting area well the plane part of it. Put x million jigger
volts there and theres going the be quite a potential difference
developed over the earth nearby.

There are a few videos of Youtube showing teams of football players and
some animals all falling over with electric shocks during lightning
strikes on playing fields because of this very effect...


--
Tony Sayer

On Tuesday, 25 August 2015 11:17:51 UTC+1, whisky-dave wrote:
On Monday, 24 August 2015 17:48:41 UTC+1, harry wrote:

Just been down our local pub.
A tornado associated with the event wrecked the beer garden + several large trees.

yeah that's what the all say, if you get a bit tipsy and run round the beer garden naked just admit to it ;-)

Must be global climate change.:-0