* Blogs    * Barrabucks    * The Logo Shop    * Arcade    * Gallery    * Chat    * FAQ    Barramundi Fishing 
  Contact Contact      * Register    * Login  *
   * Register
South Pacific island holidays

Share This Topic On: Share on Facebook FacebookShare on Twitter TwitterShare on Reddit RedditShare on Tumblr TumblrShare on Google+ Google+
 
Jedi Seadog
Jedi Seadog

Joined: Sat Feb 14, 2009 6:23 pm
Posts: 1983
Barrabucks points on hand:
20,225.65 Barrabucks
Post Posted: Fri Oct 19, 2018 6:48 pm    Post subject: Re: Lightning- how to avoid

Sorry mate.

I tend to go to lengths to prove something is right. Shouldn't do that, I guess.

I'll plead that its a consequence of having to prove things beyond a reasonable doubt during my working life and habits are hard to break.

The sideways stuff is simply cloud to cloud discharges which are mostly hidden by the clouds themselves. Not seeing the discharge stroke in those circumstances, they tend to be simply classed as "sheet lightning" and harmless.

_________________
Regards
Ronje


Top
  Profile  
 
South Pacific island holidays
 
Seadog
Seadog

Joined: Sun Aug 27, 2017 9:20 am
Posts: 377
Location: Darwin
Barrabucks points on hand:
3,160.00 Barrabucks
Post Posted: Fri Oct 19, 2018 7:38 pm    Post subject: Re: Lightning- how to avoid

I've watched the sideways and intricate dancing forks many times in what seems like slow motion to the eye but haven't been able to capture on camera yet.

Another hobby coming one day!

_________________


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog
User avatar

Joined: Mon May 18, 2009 11:46 pm
Posts: 2604
Barrabucks points on hand:
25,181.40 Barrabucks
Post Posted: Fri Oct 19, 2018 9:07 pm    Post subject: Re: Lightning- how to avoid

Cheers Ronje. To clarify, absolute zero (0 kelvin) is about -273 celcius


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog

Joined: Sat Feb 14, 2009 6:23 pm
Posts: 1983
Barrabucks points on hand:
20,225.65 Barrabucks
Post Posted: Sat Oct 20, 2018 7:19 am    Post subject: Re: Lightning- how to avoid

Thanks Theodosius.

You're right. I see that I left the 2 out of -273. (-273.2). A theoretical absolute zero temp that's never been reached as I remember past thermodynamics days.

When you said "patient" in one of your posts, what line of interest is that?

_________________
Regards
Ronje


Top
  Profile  
 
 
Platinum Member
Platinum Member

Joined: Wed Nov 27, 2013 4:46 pm
Posts: 132
Barrabucks points on hand:
1,450.00 Barrabucks
Post Posted: Tue Oct 23, 2018 7:37 am    Post subject: Re: Lightning- how to avoid

Having a career in working on live high voltage, id firstly GTFO! Then, id be inclined to leave the bimini up for a faraday cage. All rods and antennas down and dont have your head above the bimini line. I dont think the 5-10mm gap in your battery isolator will achieve much in the way of saving your electrics, but each to their own.


Top
  Profile  
 
 
Seadog
Seadog

Joined: Sun Aug 27, 2017 9:20 am
Posts: 377
Location: Darwin
Barrabucks points on hand:
3,160.00 Barrabucks
Post Posted: Tue Oct 23, 2018 10:19 am    Post subject: Re: Lightning- how to avoid

I agree with you on the isolator.

It's just what I did at that time.

_________________


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog
User avatar

Joined: Sat Jul 22, 2006 2:41 pm
Posts: 1791
Images: 58
Location: Kununurra WA
Barrabucks points on hand:
18,746.30 Barrabucks
Post Posted: Tue Oct 23, 2018 8:37 pm    Post subject: Re: Lightning- how to avoid

NinjaFish wrote:
I've watched the sideways and intricate dancing forks many times in what seems like slow motion to the eye but haven't been able to capture on camera yet.

Another hobby coming one day!


Shot these Sunday night along the Gibb. The red brown hue is from dust and smoke from fires


You do not have the required permissions to view the files attached to this post.

_________________
Regards Dick


Top
  Profile Personal album  
 
 
Jedi Seadog
Jedi Seadog

Joined: Sat Feb 14, 2009 6:23 pm
Posts: 1983
Barrabucks points on hand:
20,225.65 Barrabucks
Post Posted: Tue Oct 23, 2018 8:42 pm    Post subject: Re: Lightning- how to avoid

Fantastic photos. Thanks.

_________________
Regards
Ronje


Top
  Profile  
 
 
Seadog
Seadog

Joined: Sun Aug 27, 2017 9:20 am
Posts: 377
Location: Darwin
Barrabucks points on hand:
3,160.00 Barrabucks
Post Posted: Tue Oct 30, 2018 5:16 am    Post subject: Re: Lightning- how to avoid

What sort of camera are you using Dick?

This is from the Sunday Terra on what to do in case of....


You do not have the required permissions to view the files attached to this post.

_________________


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog
User avatar

Joined: Sat Jul 22, 2006 2:41 pm
Posts: 1791
Images: 58
Location: Kununurra WA
Barrabucks points on hand:
18,746.30 Barrabucks
Post Posted: Sat Nov 03, 2018 7:56 pm    Post subject: Re: Lightning- how to avoid

NinjaFish wrote:
What sort of camera are you using Dick?




Canon 5D but any SLR can take shots similar to that. Just need to be able to keep the shutter open for a while and have the camera sitting still

_________________
Regards Dick


Top
  Profile Personal album  
 
 
Platinum Member
Platinum Member

Joined: Tue Jul 31, 2018 12:41 pm
Posts: 102
Images: 7
Location: hervey bay qld
Barrabucks points on hand:
1,040.00 Barrabucks
Post Posted: Sat Nov 03, 2018 8:36 pm    Post subject: Re: Lightning- how to avoid

great pics ,love those storm open shutter pics


Top
  Profile Personal album  
 
 
Jedi Seadog
Jedi Seadog

Joined: Sat Feb 14, 2009 6:23 pm
Posts: 1983
Barrabucks points on hand:
20,225.65 Barrabucks
Post Posted: Mon Nov 05, 2018 8:00 am    Post subject: Re: Lightning- how to avoid

Bit more info about lightning.

Part of my job used to be locating electrical interference emanating from power lines. At times I had to go in a bucket truck at night up 66kv (66,000 volt) power lines. Most problems came from 12 kv lines but the more serious ones were from higher voltage lines.

The closest limit for the bucket was 2 metres. A weird soft blue glow (corona - not the beer) was clearly visible along the line and you could feel the electrostatic charge building on body hairs due to the proximity.


In a thunderstorm, the water droplets in the cloud become electrostatically charged and fall to the bottom of the cloud which becomes charged. That electrostatic charge induces an equal and opposite charge on the ground as it passes over.


Higher ground or taller objects (closer to the cloud) have bigger charges induced in them. When the opposite charges have sufficient "electrical tension" between them, the air ionises in narrow channels setting up a discharge path. When the discharge happens, a very small part of the discharge is diverted into these "un-used" channels with the main discharge showing up as a single strike.

But you can still see these much dimmer ionised channels which show up like "forked/branched" lightning strikes.

You can see them easily in Dick's photos.

You need to make sure that YOU or your boat is as low as possible. That's difficult on the water as the boat is the highest thing around.

Don't stake your life on the Faraday Cage stories with the bimini. You'll lose. A Faraday Cage is nothing like a bimini frame.

A Fardady Cage is simply a hollow metal enclosure with either solid sides or a small even-sized mesh enclosure commensurate with the frequency of the electromagnetic radiation comprising the strike. These examples of electrical energy dancing around a person in a cage are under very, very controlled conditions. Don't bet your life that a bimini frame is anything like that 'cos its not.

Look here https://science.howstuffworks.com/faraday-cage.htm

At school we used to do electrostatic discharge experiments with a thing called a Wimshurst Machine. Its exactly how lightning works.

https://www.youtube.com/watch?v=Zilvl9tS0Og

In addition, even if you have a fibreglass roof, it offers zero protection so you still need to get as low as possible

_________________
Regards
Ronje


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog
User avatar

Joined: Mon May 18, 2009 11:46 pm
Posts: 2604
Barrabucks points on hand:
25,181.40 Barrabucks
Post Posted: Mon Nov 05, 2018 1:54 pm    Post subject: Re: Lightning- how to avoid

So get low and have the boat near higher trees or ground, not on open water? Ie anchor at edge of river instead of the middle of the channel


Top
  Profile  
 
 
Jedi Seadog
Jedi Seadog

Joined: Sat Feb 14, 2009 6:23 pm
Posts: 1983
Barrabucks points on hand:
20,225.65 Barrabucks
Post Posted: Mon Nov 05, 2018 5:41 pm    Post subject: Re: Lightning- how to avoid

That's what I'd be doing.

You can't get any lower than water level so get near a high bank (preferably one higher than you) but not one with taller trees than others in area. Sometimes you won't have a lot of choice but don't stay out in the middle where you'll stand out higher like a pimple on a pumpkin.

_________________
Regards
Ronje


Top
  Profile  
 
 
Silver Member
Silver Member

Joined: Tue May 02, 2017 11:49 pm
Posts: 47
Barrabucks points on hand:
650.00 Barrabucks
Post Posted: Tue Nov 06, 2018 6:06 am    Post subject: Re: Lightning- how to avoid

Might sound dumb, but in hospital full of drugs so who cares, but would carrying a couple of thick yoga mats in your boat provide any sort of protection? If you are laying flat as a tack in your boat so your not the highest point.


Top
  Profile  
 
Post new topic  Reply to topic
 Barramundi Fishing Board index » FFF North Australian Fishing Forums » Going Fishing? » Bad Trips
Go to page Previous  1, 2, 3  Next Top

  # Lightning- how to avoid Previous topic | Next topic # 
 Page 2 of 3 [ 37 posts
 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
Display posts from previous:  Sort by  
  Print view

Jump to:  

Welcome Anonymous


Login
Username:

Password:

 Remember me


I forgot my password

Don't have an account yet?
You can register for FREE

Advertisement



Darwin Sun & Moon

Darwin Tides


Northern Fishing Posts
New Lures

Mon Nov 19, 2018 1:05 pm

mickkk

FFF Seadogs 2018 - Round 10 - Barra and Threadfin

Mon Nov 19, 2018 1:04 pm

MR126

Run off trip: neaps vs springs

Mon Nov 19, 2018 12:46 pm

dant135

Monster jig/weedless hooks 15/0

Mon Nov 19, 2018 12:14 pm

Sullo

Permit system likely delayed

Mon Nov 19, 2018 12:03 pm

tristan.sloan

Quick beach sesh.

Mon Nov 19, 2018 11:46 am

jeffish

Town Hall MAybe this weekend?

Mon Nov 19, 2018 11:34 am

shaggs

Cooinda Yellow Waters weekend

Mon Nov 19, 2018 9:11 am

Blinky

Nhulunbuy spearo attacked

Mon Nov 19, 2018 8:36 am

al57

Fotofish - November 2018 thread

Sun Nov 18, 2018 8:57 pm

MR126

Qunitrex Renegade 520 SC

Sun Nov 18, 2018 11:20 am

arrabmundi

SWA barra

Sun Nov 18, 2018 7:38 am

al57

Live bait

Sat Nov 17, 2018 10:39 am

NinjaFish

Outer harbour

Fri Nov 16, 2018 8:28 am

Young_gun_fisho

Sunday Terra paper caper

Thu Nov 15, 2018 4:04 pm

Matt Flynn

5.7 Top Ender for sale

Thu Nov 15, 2018 8:10 am

fff1964

Build Up fishing and screen shots

Thu Nov 15, 2018 7:50 am

fff1964

Funding for fishing groups

Wed Nov 14, 2018 9:34 pm

NinjaFish

Channel Point Carnage.. and a magic-carpet ride.

Wed Nov 14, 2018 9:27 pm

NinjaFish

Daiwa Sealine 400H, 50H for sale

Wed Nov 14, 2018 4:49 pm

Ruffy


General Fishing Posts
Fitzroy Net Free Zone

Tue Oct 30, 2018 6:28 am

ronje

More from the lake

Thu Oct 11, 2018 8:52 am

Matt Flynn

Show us your biggest COBIA

Fri Jun 15, 2018 7:44 pm

swilmore

Decent jew

Thu Jun 07, 2018 8:45 am

JJLure

Vanuatu birthday bash

Mon May 28, 2018 1:25 pm

grumpy

Bloodwormers want compo

Tue May 01, 2018 11:07 pm

Dick

Goodbye Coorong

Fri Apr 27, 2018 8:29 pm

Matt Flynn

GoFish Nagambie

Sat Apr 14, 2018 7:25 am

barra mick

Cracker bull shark

Thu Mar 29, 2018 11:26 pm

Sullo

Good Flathead Initiative in NSW

Thu Mar 29, 2018 10:41 am

Dinger

Awoonga dam spills over

Thu Mar 22, 2018 12:48 pm

JJLure

A YEAR ON

Mon Mar 05, 2018 8:11 pm

CJ87

Maggot stew with squid

Thu Feb 08, 2018 10:59 am

Matt Flynn

Hazelwood barramundi stocking timeline

Thu Jan 18, 2018 4:25 pm

Matt Flynn

PB Lizard

Thu Nov 30, 2017 8:09 am

Matt Flynn

Tully Gorge

Wed Nov 22, 2017 10:19 am

Jeno

Lake Kununurra set to explode

Tue Nov 21, 2017 3:16 pm

Chriso

Victorian metery

Tue Nov 14, 2017 8:38 pm

Matt Flynn

Show us your biggest MACKEREL

Fri Nov 10, 2017 2:31 pm

solo

John Dunphy Artificial Reef

Tue Oct 31, 2017 7:18 pm

NinjaFish


Recent Non-Fishing Posts
World's hottest curry

Fri Nov 09, 2018 2:25 pm

FITZY

Arnhem Land

Sat Nov 03, 2018 4:46 am

al57

New old member

Thu Nov 01, 2018 4:53 pm

jeffish

The good oil.

Thu Oct 25, 2018 9:36 am

jersy

Global warming

Mon Oct 22, 2018 6:38 pm

NinjaFish

Hard to believe ...

Mon Oct 22, 2018 2:44 pm

theodosius

Crabs have rights too.

Sun Oct 21, 2018 10:10 am

NinjaFish

Wentworth by-election

Sun Oct 21, 2018 7:35 am

ronje

Cheap barra!

Fri Oct 19, 2018 2:48 pm

Matt Flynn

Bat poop

Sun Oct 14, 2018 4:17 pm

fridgie

The Joint Strike Lemon?

Sat Oct 13, 2018 8:43 am

ronje

Easy BBQ garlic crab

Thu Oct 11, 2018 11:58 am

jeffish

Keep sneaking away

Wed Oct 10, 2018 7:49 am

b-radical

New fisho

Tue Oct 09, 2018 10:05 pm

jjrattus

Drummer for Mud's next party ...

Fri Oct 05, 2018 6:02 pm

NinjaFish

Darwin has cheapest house prices?

Tue Oct 02, 2018 11:54 am

al57

Stairway not a rip-off

Sun Sep 30, 2018 7:07 pm

fridgie

China will rule world

Fri Sep 28, 2018 1:13 pm

Matt Flynn

Demise of the meat pie

Thu Sep 27, 2018 8:28 am

Matt Flynn


Poll

Yes  53%  [17]
No  46%  [15]
Total Votes: 32

FFF Newsletters
You can view any of our new FFF Newsletters that you may have missed here:
FFF Newsletters Archive
Subscription Management