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geoffw
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 12:24 pm 
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Posts: 344
Location: Pembrokeshire West Wales UK
Weather Station: Watson Weather Station W-8681
Operating System: Windows 7
RayProudfoot wrote:
The Met Office are predicting the low to centred over Ireland at 1200GMT Monday with a central pressure of 964Mb. ..........

Which means it is unlikely to be a record low here, but we'll certainly get the wind!

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RayProudfoot
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 2:46 pm 
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Joined: Wed May 06, 2009 6:29 pm
Posts: 1709
Location: Cheadle Hulme, Cheshire, England
Weather Station: Davis VP2 with Daytime FARS
Operating System: Windows XP SP3
Pressure has been dropping since just before 0900GMT and is going down at 1.2Mb/hr. Hardly a breath of wind at the moment.
This is where it gets interesting.

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geoffw
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 6:34 pm 
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Joined: Fri May 08, 2009 3:12 pm
Posts: 344
Location: Pembrokeshire West Wales UK
Weather Station: Watson Weather Station W-8681
Operating System: Windows 7
Pressure fall at a wild 2.0mb per hour at the moment. about to drop below 1000mb from a maximum at 8.00am of 1014mb....

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RayProudfoot
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 6:35 pm 
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Joined: Wed May 06, 2009 6:29 pm
Posts: 1709
Location: Cheadle Hulme, Cheshire, England
Weather Station: Davis VP2 with Daytime FARS
Operating System: Windows XP SP3
geoffw wrote:
RayProudfoot wrote:
The Met Office are predicting the low to centred over Ireland at 1200GMT Monday with a central pressure of 964Mb. ..........

Which means it is unlikely to be a record low here, but we'll certainly get the wind!


What's your record low pressure Geoff? You're pretty close to the centre of the low.

Pressure here has dropped 11Mb in 9 hours. If it continues that would equate to 29Mb in 24 hours! But still very little wind. Max gust 6kts since noon. Things will be changing soon I think.

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daj
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 6:42 pm 
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Joined: Tue Jul 29, 2008 8:00 pm
Posts: 2001
Location: Thornhill, Dumfries, UK
Weather Station: WH1081
Operating System: Mac OSx & Win 7
my pressure is plummeting!
Attachment:
pressure.png


Attachment:
press-graph.png


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RayProudfoot
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 6:52 pm 
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Posts: 1709
Location: Cheadle Hulme, Cheshire, England
Weather Station: Davis VP2 with Daytime FARS
Operating System: Windows XP SP3
That's scary Daj! My drop-rate is only 1.66Mb/hr.

Geoff, I reckon your record of 973.6 might go tonight.

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nitrx
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 7:34 pm 
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Joined: Sun Dec 13, 2009 1:21 pm
Posts: 867
Location: Apeldoorn The Netherlands
Weather Station: WH1080 / WS 4000
Operating System: Windows 7 / Ubuntu
Lowest values expected tuesday http://weerplaza.nl/weerkaarten/default ... lement=slp

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Gina
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 8:02 pm 
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Joined: Sat Feb 21, 2009 12:41 pm
Posts: 1859
Location: Devon UK
Weather Station: FO WH1081PC (Maplin)
Operating System: OS X, Linux Mint, Win7 & XP
Dropping fast here too...
Attachment:
24hrs-Pressure.png


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Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
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DaveNZ
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 8:15 pm 
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Joined: Mon Dec 07, 2009 10:27 pm
Posts: 336
Location: Howick, Auckland, New Zealand
Weather Station: Davis VP2
Operating System: Windows 7 64-bit
Wow, enjoy the exciting weather :lol:

We had a similar low pressure system cross northern NZ in July 2008. The central pressure in the far north of the country got down to 964 hPa, about the equal lowest on record there. In Auckland there was a 12 hPa pressure drop in 3 hours! :o

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RayProudfoot
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 8:50 pm 
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Joined: Wed May 06, 2009 6:29 pm
Posts: 1709
Location: Cheadle Hulme, Cheshire, England
Weather Station: Davis VP2 with Daytime FARS
Operating System: Windows XP SP3
The pressure change is now described by Cumulus as "falling very rapidly" -2.07Hpa/hr. First time I can remember seeing that! :o Highest gust is still only 12mph in last 10 minutes. :?

And now the UK Met Office has issued the following severe weather warning for NW England...

Rain will become heavy on Monday morning with accumulations of 20 to 30 mm expected, especially in the west.
The rain will turn to snow above 400 m, giving accumulations of up to 5 cm on higher roads. The snow may drift in strong to gale force winds, with gusts of up to 60 mph possible.

My station is below 400m (85m) so I won't get the snow but it will get very nasty on trans-Pennine routes tomorrow morning. I'm just glad I have the day off.

Here's the latest rainfall radar.
Attachment:
Nov8_RainRadar.jpg


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daj
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 9:02 pm 
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Joined: Tue Jul 29, 2008 8:00 pm
Posts: 2001
Location: Thornhill, Dumfries, UK
Weather Station: WH1081
Operating System: Mac OSx & Win 7
RayProudfoot wrote:
The pressure change is now described by Cumulus as "falling very rapidly" -2.07Hpa/hr. First time I can remember seeing that! :o Highest gust is still only 12mph in last 10 minutes. :?

I am currently showing -3.0 per hour. Windspeed around 20mph, highest was 41.3 about 90 minutes ago.

Should I run away!

I think we are all in for a rough ride

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steve
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 9:44 pm 
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Joined: Mon Jun 02, 2008 6:49 pm
Posts: 17612
Location: Sanday, Orkney
Weather Station: Davis VP2
Operating System: Windows Home Server 2011
We've just reached gale force 8 here, 40 mph, gusts to 50 mph. Pressure 985 mb, (-1.77 mb/hr) not falling as rapidly as it was earlier. I don't think we'll be breaking any records here, this is just normal Orkney weather :lol:

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RayProudfoot
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 9:48 pm 
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Joined: Wed May 06, 2009 6:29 pm
Posts: 1709
Location: Cheadle Hulme, Cheshire, England
Weather Station: Davis VP2 with Daytime FARS
Operating System: Windows XP SP3
daj wrote:
RayProudfoot wrote:
The pressure change is now described by Cumulus as "falling very rapidly" -2.07Hpa/hr. First time I can remember seeing that! :o Highest gust is still only 12mph in last 10 minutes. :?

I am currently showing -3.0 per hour. Windspeed around 20mph, highest was 41.3 about 90 minutes ago.

Should I run away!

I think we are all in for a rough ride


Run away David? I hope not. :lol: It's -2.75Mb/hr here now with pressure at 992.6. Just started raining. 10-minute gust now 17mph. Steve would laugh at this given his conditions.

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Gina
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 10:23 pm 
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Joined: Sat Feb 21, 2009 12:41 pm
Posts: 1859
Location: Devon UK
Weather Station: FO WH1081PC (Maplin)
Operating System: OS X, Linux Mint, Win7 & XP
After 4 or 5 hours of calm the wind has just started up here and now just a Force 2 westerly. Pressure now falling very rapidly, well over -2mb/h. The temperature is rising slowly now.

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Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.
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geoffw
 Post subject: Re: Major Atantic Low due to hit British Isles on Monday 8th Nov
PostPosted: Sun Nov 07, 2010 10:30 pm 
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Joined: Fri May 08, 2009 3:12 pm
Posts: 344
Location: Pembrokeshire West Wales UK
Weather Station: Watson Weather Station W-8681
Operating System: Windows 7
Wow! Batten down the hatches - here come what is locally called a "Pembrokeshire Breeze"!


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