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Gfs Rainfall


Guest Mr_S

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Guest Mr_S

Hiya all,

curious questions

Using the netweather datacentre.. to get an idea of a estimated rainfall withina few days which is the best chart to use?

I look up both and go for an average or similarity (if any different from each other).. but is either one better then the other?

Also,

the rainfall amounts as given by the charts, is there any "definition" of how much rain needs to fall per hour and its measurement for it to be classed as a shower, light, moderate, heavy, torrential rain?

i jot my thoughts down on a notepad and go by the days weathers comparison to what i wrote down but wether to say what *kind* of rainfall will happen would be vague from a learning perspective.

hope this question makes sence :(

Cheers,

Mr_S

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Posted
  • Location: Exeter, Devon, England
  • Location: Exeter, Devon, England

    To get total rainfall expected over the next few days you might find these charts useful:

    http://www.wetterzentrale.de/pics/Rmgfs24sum.gif (T+24hours)

    http://www.wetterzentrale.de/pics/Rmgfs48sum.gif (T+48hours)

    http://www.wetterzentrale.de/pics/Rmgfs72sum.gif (T+72hours)

    http://www.wetterzentrale.de/pics/Rmgfs96sum.gif (T+96hours)

    http://www.wetterzentrale.de/pics/Rmgfs120sum.gif (T+120hours)

    http://www.wetterzentrale.de/pics/Rmgfs144sum.gif (T+144hours)

    They show accumulated rainfall from the initiation of the run until T+24, 48hours etc...

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    Guest Mr_S

    ohhh a great find !! i should have thought of wetterzentrale. oops. Wonder if paul can add these charts 2 NW also? :(

    Ty Dave

    i just need to find the definition of rainfall rates for type of rainfall

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    Posted
  • Location: just south of Doncaster, Sth Yorks
  • Location: just south of Doncaster, Sth Yorks

    go to the Met O web site and you will find it in there.

    Rainfall rates are different , ie moderate rain is not the same rate as a moderate shower etc!

    John

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    Posted
  • Location: just south of Doncaster, Sth Yorks
  • Location: just south of Doncaster, Sth Yorks

    excellent news Paul.

    Whilst on the topic of advances how about a wind chart that shows 'feathers', speeds, rather than what we have at the moment.

    In my view its about the only thing Net Wx is not better than any other weather site?

    John

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    Posted
  • Location: Aviemore
  • Location: Aviemore

    I can add that without a problem - will leave the other wind maps in there though as some people don't understand the feathers :(

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    Posted
  • Location: Liphook
  • Location: Liphook

    The only problem with GFS rainfall I find is that it can over-estimate the rainfall, for example it tends to vastly over-do frontal systems that swing in from the west for eastern areas, it seems to retain the frontal systems strength for too long.

    The cumulative feature is great though, its been up on wetterzentrale for a long time mind you, quite a few months if I remember correctly.

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