Mon, 24 Jul 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 16/09
ALLDAYS 22/09
BEAUFORT WEST 17/04
BELA-BELA 21/08
BETHLEHEM 17/03
BISHO 21/09
BLOEMFONTEIN 20/02
CALVINIA 10/01
CAPE ST LUCIA 25/17
CAPE TOWN 15/08
CLANWILLIAM 11/07
DE AAR 21/04
DURBAN 23/10
EAST LONDON 20/14
ERMELO 19/04
FAURESMITH 22/03
FICKSBURG 19/01
GEORGE 19/06
GRAAF-REINETT 24/05
GRAHAMSTOWN 19/09
HERMANUS 14/08
JOHANNESBURG 18/05
JOUBERTINA 15/05
KIMBERLEY 24/06
KLERKSDORP 22/07
KOMATIPOORT 27/15
KROONSTAD 21/04
LADYSMITH 25/07
LANGEBAAN 15/10
LEPHALALE 22/08
LYDENBURG 21/05
MAFIKENG 20/06
MUSINA 25/09
NELSPRUIT 23/06
NEWCASTLE 24/06
OUDTSHOORN 19/04
PAARL 13/06
PHALABORWA 24/11
PIETERMARITZBURG 25/09
PLETTENBERG BAY 17/10
POLOKWANE 20/07
PORT ALFRED 20/12
PORT ELIZABETH 18/11
PORT ST JOHNS 26/12
POTCHEFSTROOM 22/05
PRETORIA 19/07
QUEENSTOWN 22/05
RICHARDS BAY 26/16
ROBERTSON 14/05
RUSTENBURG 20/07
SASOLBURG 20/04
SKUKUZA 26/14
SOWETO 17/06
SPRINGBOK 19/04
STILBAAI 16/10
SUTHERLAND 08/01
TZANEEN 21/09
ULUNDI 25/09
UMTATA 26/06
UPINGTON 24/07
VEREENIGING 20/06
VREDENDAL 14/05
VRYBURG 22/07
WELKOM 20/05
WITBANK 19/03
WORCESTER 12/05

 

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