Boards.ie uses cookies. By continuing to browse this site you are agreeing to our use of cookies. Click here to find out more x
Thread Closed  
 
 
Thread Tools Search this Thread
14-12-2010, 16:11   #1
nacho libre
Registered User
 
Join Date: Aug 2006
Posts: 12,262
National: Cold spell Charts/ Media/ Forecasts (Strictly no chit-chat) (15/12/2010)

Please keep chic-chat to the other thread.




look at that beauty! bone chilling upper atmosphere wind straight from the arctic freezer! we are talking polar low territory and active troughs crossing down over us!

feel free to edit this mods as you see fit.

Last edited by nacho libre; 14-12-2010 at 16:14.
nacho libre is offline  
Advertisement
14-12-2010, 16:32   #2
 
Join Date: Dec 2009
Posts: 2,661
latest GFS extending lifetime of the upcoming cold spell into christmas.

Snow risk remains for anywhere in Ireland from Thursday into Tuesday
WolfeIRE is offline  
14-12-2010, 16:41   #3
TheMilkyPirate
Registered User
 
TheMilkyPirate's Avatar
 
Join Date: Apr 2006
Posts: 4,718
T+186 on the latest GFS has a potent low over the south of ireland moving up and away to our east on wednesday next, Fantasy island i know but that would surely fall as sleet/snow given the temp charts for the same timeframe? Precip looks very heavy.
TheMilkyPirate is online now  
Thanks from:
14-12-2010, 16:49   #4
nacho libre
Registered User
 
Join Date: Aug 2006
Posts: 12,262


personally i think this chart maybe slightly conservative. i think parts of Ulster could have 4-6 inches of lying snow by Saturday afternoon.
nacho libre is offline  
Thanks from:
14-12-2010, 16:49   #5
snaps
Registered User
 
Join Date: May 2004
Posts: 7,069
Send a message via MSN to snaps
If im not asking a stupid question, what do the different colours mean in that 1st chart?
snaps is offline  
Thanks from:
Advertisement
14-12-2010, 16:53   #6
 
Join Date: Dec 2009
Posts: 2,661
wind speed snaps
WolfeIRE is offline  
14-12-2010, 16:53   #7
Tom Cruises Left Nut
Registered User
 
Tom Cruises Left Nut's Avatar
 
Join Date: Apr 2002
Posts: 8,701
Quote:
Originally Posted by snaps View Post
If im not asking a stupid question, what do the different colours mean in that 1st chart?
I may be wrong but I think speeds ?
Tom Cruises Left Nut is offline  
(2) thanks from:
14-12-2010, 16:54   #8
darkman2
Banned
 
Join Date: Dec 2005
Posts: 8,480
WRT Friday - there is an increasing risk of more significant snowfall across the country during the day. Looks like a frontal trough may move through. On the down side the mild sector will be close to the South coast so things look sleety there. But could be appreciable snow elsewhere. Have to be watched.

darkman2 is offline  
14-12-2010, 16:58   #9
 
Join Date: Apr 2008
Posts: 1,259
Quote:
Originally Posted by snaps View Post
If im not asking a stupid question, what do the different colours mean in that 1st chart?
I'm still trying to figure out the general themes of the charts, but usually there's a legend of some description on the charts. In this one, the title at the top of the chart is "Wind speed/direction" at 850hpa (not sure myself yet what this bit means) and the side has the colour coding.

I've seen a good few references to 850hpa in the threads here over the last while. It sounds like it's a pressure, but is it related to altitude or anything?
irishmotorist is offline  
Advertisement
14-12-2010, 17:01   #10
Iancar29
Registered User
 
Iancar29's Avatar
 
Join Date: Jan 2009
Posts: 4,999
Quote:
Originally Posted by irishmotorist View Post
I'm still trying to figure out the general themes of the charts, but usually there's a legend of some description on the charts. In this one, the title at the top of the chart is "Wind speed/direction" at 850hpa (not sure myself yet what this bit means) and the side has the colour coding.

I've seen a good few references to 850hpa in the threads here over the last while. It sounds like it's a pressure, but is it related to altitude or anything?
Ye its relative to 1 mile or so above the surface.
Iancar29 is offline  
(3) thanks from:
14-12-2010, 17:06   #11
 
Join Date: Jan 2008
Posts: 2,247
Quote:
Originally Posted by Iancar29 View Post
Ye its relative to 1 mile or so above the surface.
Thanks. Ive wOndered that too. It'll be my new thing learnt today!
whiteandlight is offline  
Thanks from:
14-12-2010, 17:06   #12
 
Join Date: Apr 2008
Posts: 1,259
Quote:
Originally Posted by Iancar29 View Post
Ye its relative to 1 mile or so above the surface.
Without wanting a training session in all this (as I plan to get some books and learn a bit more myself), is there a law or rule of thumb that says how this relates to ground level? If this is a 2 semester answer, I can go digging myself rather than bogging here down...
irishmotorist is offline  
Thanks from:
14-12-2010, 17:16   #13
 
Join Date: Jul 2010
Posts: 9
Hey guys last week i had a link to a great wind model which showed the progression over a couple of days and i cant seem to find it. I looked through the helpful links section but to no avail. Does anyone here have a good links that are not in the thread on links thanks
eoinbergin is offline  
14-12-2010, 17:17   #14
 
Join Date: Dec 2009
Posts: 2,661
Quote:
Originally Posted by eoinbergin View Post
Hey guys last week i had a link to a great wind model which showed the progression over a couple of days and i cant seem to find it. I looked through the helpful links section but to no avail. Does anyone here have a good links that are not in the thread on links thanks
http://magicseaweed.com/msw-surf-cha...wind&starttime

http://www.xcweather.co.uk/
WolfeIRE is offline  
14-12-2010, 17:29   #15
nacho libre
Registered User
 
Join Date: Aug 2006
Posts: 12,262


a chart to savour!

the 510 dam line that close by is incredible!!

we could have a prolonged spell of snow moving down across the country based on this chart. i also think unexpected features could well pop up over the weekend. so i feel it's reasonable to say most places in Ireland will have seen at least a bit of snow by Sunday! well i don't want to jinx things but we are getting into reliable timeframe now!
nacho libre is offline  
Thread Closed

Thread Tools Search this Thread
Search this Thread:

Advanced Search