Mon, 20 Feb 2017
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SA REGIONAL




INFORMATION




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MODELS


WHAT ARE MODELS?

Models are computer programs that predict the weather from data that is collected from the field. Data is fed into computer models which are highly complex mathematical algorithms or better known as numerical models which try and take into account all the possible meteorological variables to predict the growth, decay and speed of weather phenomena as well as temperatures, pressures, winds, etc. for periods from 12 hrs to 20 days in the future.

The models are only as accurate as the data that is fed into them and none are 100% correct and will never ever be able to 100% predict the weather owing to the fact that a certain element of chaos exists in nature that CANNOT be predicted.

Certain models are better than others - links to certain models and their various outputs are given. Most sources of data are similar. For this site's purposes, most data either is sourced from the SAWB or the NWS (National Weather Service of the USA).

SOURCE PRODUCT
NCEP
USA

24-186hr forecasts

250mb Winds, 500mb Hgts & Hgt Tendencies,
700mb Hgts & Precipitable Water,
925mb Winds & Mean Sea-Level Pressure
Latest plots
FNOC, USA GLOBAL SEA SURFACE TEMPERATURES
Current | Climate | Anomaly
COLA/IGES MRF, USA - 10 day temperature outlook
- 10 day precipitation outlook
- 14 day soil moisture outlook
- 2-6 day forecasts

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Goodstuff



Goodstuff
ALEXANDER BAY 22/13
ALLDAYS 24/18
BEAUFORT WEST 37/13
BELA-BELA 27/17
BETHLEHEM 24/12
BISHO 30/15
BLOEMFONTEIN 29/15
CALVINIA 35/19
CAPE ST LUCIA 24/21
CAPE TOWN 28/14
CLANWILLIAM 37/18
DE AAR 32/17
DURBAN 25/17
EAST LONDON 24/18
ERMELO 19/12
FAURESMITH 31/17
FICKSBURG 25/12
GEORGE 24/14
GRAAF-REINETT 37/12
GRAHAMSTOWN 29/13
HERMANUS 28/15
JOHANNESBURG 20/14
JOUBERTINA 31/11
KIMBERLEY 33/18
KLERKSDORP 26/17
KOMATIPOORT 28/20
KROONSTAD 26/15
LADYSMITH 26/14
LANGEBAAN 24/15
LEPHALALE 28/18
LYDENBURG 23/15
MAFIKENG 26/17
MUSINA 26/19
NELSPRUIT 24/15
NEWCASTLE 25/15
OUDTSHOORN 39/14
PAARL 32/16
PHALABORWA 27/19
PIETERMARITZBURG 25/14
PLETTENBERG BAY 21/16
POLOKWANE 23/17
PORT ALFRED 25/16
PORT ELIZABETH 23/17
PORT ST JOHNS 25/19
POTCHEFSTROOM 25/16
PRETORIA 24/15
QUEENSTOWN 35/12
RICHARDS BAY 24/20
ROBERTSON 38/14
RUSTENBURG 27/16
SASOLBURG 22/14
SKUKUZA 28/21
SOWETO 19/14
SPRINGBOK 20/14
STILBAAI 24/16
SUTHERLAND 30/11
TZANEEN 21/16
ULUNDI 26/16
UMTATA 26/13
UPINGTON 36/24
VEREENIGING 21/14
VREDENDAL 31/12
VRYBURG 29/18
WELKOM 28/15
WITBANK 19/12
WORCESTER 36/14

 

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