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#1469027 - 18/08/2018 08:27 Percentage of rain.
ozone doug Offline
Weatherzone Addict

Registered: 06/11/2006
Posts: 1876
Loc: Roma SW QLD Eye to the West...
Well i read i have been reading the weather forecast wrong lol.
Turns out 80 % of 2- 5 mm of rain is not quite what it looks.
click link for better understanding
http://www.abc.net.au/news/2018-08-18/ra...f-them/10093822

This forecast is saying there is possible rainfall between 2mm and 5mm.

The first figure means there's a 50 per cent chance of receiving at least 2mm of rain.

The second figure means there is a 25 per cent chance of receiving at least 5mm of rain.
An image with annotations explaining how to read a rain forecast.


Edited by ozone doug (18/08/2018 08:27)
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Cheers Doug. 491 Doug/ uhf ch40 When severe weather
BOM Stormspotter G0388 Roma S W Queensland Formerly Redcliffe.
https://www.wunderground.com/personal-weather-station/dashboard?ID=IQUEENSL852

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#1469029 - 18/08/2018 08:56 Re: Percentage of rain. [Re: ozone doug]
bbowen Offline
Weather Freak

Registered: 30/03/2011
Posts: 145
hmmmmmm.......Well I'll admit also that I always thought it he % of getting rain and what could be expected.
thanks Doug.

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#1470219 - 05/09/2018 15:58 Re: Percentage of rain. [Re: ozone doug]
retired weather man Offline
Weatherzone Addict

Registered: 01/07/2007
Posts: 4831
Loc: Wynnum
A couple of years go we has extensive discussions about this on WZ when BoM was using percentages in their everyday forecasts all the time. Someone must have listened as these seem to have been dropped
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Wyn Nth 2018-Jan12.2(158),Feb264.4(146),Mar217.0(126),Apr65.8(96),May46.0(100),Jun39.8(74),Jul19.6(56.1),Aug 23.6(45),Sep33.2(32),Oct150.0(95),Nov36.2(109),Dec8.4(131)YTD916.2(1168).

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