Fri, 23 Jun 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 16/07
ALLDAYS 18/09
BEAUFORT WEST 13/01
BELA-BELA 18/06
BETHLEHEM 15/00
BISHO 17/03
BLOEMFONTEIN 16/01
CALVINIA 13/-1
CAPE ST LUCIA 23/16
CAPE TOWN 14/06
CLANWILLIAM 16/05
DE AAR 14/00
DURBAN 20/09
EAST LONDON 18/09
ERMELO 16/05
FAURESMITH 16/00
FICKSBURG 15/01
GEORGE 13/06
GRAAF-REINETT 14/00
GRAHAMSTOWN 15/04
HERMANUS 13/04
JOHANNESBURG 14/05
JOUBERTINA 12/00
KIMBERLEY 18/03
KLERKSDORP 18/01
KOMATIPOORT 22/12
KROONSTAD 17/03
LADYSMITH 21/03
LANGEBAAN 15/09
LEPHALALE 20/09
LYDENBURG 17/04
MAFIKENG 17/03
MUSINA 20/09
NELSPRUIT 17/06
NEWCASTLE 20/03
OUDTSHOORN 15/03
PAARL 14/02
PHALABORWA 19/11
PIETERMARITZBURG 18/05
PLETTENBERG BAY 14/06
POLOKWANE 14/06
PORT ALFRED 15/08
PORT ELIZABETH 16/07
PORT ST JOHNS 20/09
POTCHEFSTROOM 19/03
PRETORIA 16/07
QUEENSTOWN 16/01
RICHARDS BAY 20/13
ROBERTSON 14/04
RUSTENBURG 18/06
SASOLBURG 17/03
SKUKUZA 21/12
SOWETO 14/05
SPRINGBOK 16/04
STILBAAI 15/06
SUTHERLAND 10/02
TZANEEN 16/07
ULUNDI 19/08
UMTATA 18/03
UPINGTON 21/02
VEREENIGING 17/03
VREDENDAL 13/02
VRYBURG 19/03
WELKOM 18/04
WITBANK 15/04
WORCESTER 14/03

 

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