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  1. #21
    Join Date
    Mar 2017
    Location
    Me; Nth County Dublin, Boat;Malahide
    Posts
    816

    Default Re: Met Forecasts, Thunder and Lightnng.

    I don't think I would rely on weather forecasts featuring pictograms and the like, I prefer Isobars (or even Hectopascales !) and warm/cold front symbols

  2. #22
    Join Date
    Oct 2002
    Location
    UK when not sailing
    Posts
    3,825

    Default Re: Met Forecasts, Thunder and Lightnng.

    Quote Originally Posted by Spirit (of Glenans) View Post
    I don't think I would rely on weather forecasts featuring pictograms and the like, I prefer Isobars (or even Hectopascales !) and warm/cold front symbols
    I certainly do not like the pictograms produced by the many weather firms. I do not trust their algorithms. When it comes to those taken directly from GTIB information, they are more helpful. GRIB apps such as PocketGrib on a tablet or XyGrib on a laptop let you see isobars + wind arrows + rain areas. You get more information than you can glean from a synoptic chart. I say that as someone who worked as a forecaster prior to NWP and who used to draw isobars, fronts etc. I used to produce, by guess and by god, and some basic theory, a forecast chart. I know what I trust today.

    One of my beefs about the Met Office today is the complexity of their frontal structures. I have great difficulty in trying to imagine how they formed. There is merit in the KISS principle when producing a forecast chart. Many of their “fronts” are either short lived features seen on satellite images or detail seen on computer models. Given the difficulty/impossibility of predicting small, transient features over 24 hours ahead. Such detail from a NWP model is likely to be indicative rather than definitive.

  3. #23
    Join Date
    Aug 2011
    Location
    On the Celtic Fringe
    Posts
    14,258

    Default Re: Met Forecasts, Thunder and Lightnng.

    Quote Originally Posted by Spirit (of Glenans) View Post
    I don't think I would rely on weather forecasts featuring pictograms and the like, I prefer Isobars (or even Hectopascales !) and warm/cold front symbols
    We are a group of quite specialist end users who understand a little about weather. The usual man or woman on the street won't care as long as they can dry their washing.
    Cynical Scottish almost retired engineer who sails a Gib'Sea 96.

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