www.1stweather.com | SA Regional

Wed, 08 Sep 2010

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GFS MODEL PRODUCTS

Below is an example of what the main model page looks like:
The GFS model output STATUS:

Issued : MON 16 FEB 14h53 SAST [GFS 12UTC 16FEB2004]

Below you will find an extensive list of new products generated by us, customized for the southern African region. We will be adding more if there is a need for them. If you have certain products you want to see on this page, please Contact us.

PREVIOUS MODEL RUN : 18UTC (Not active here)
PREVIOUS MODEL RUN : 12UTC (Not active here)
PREVIOUS MODEL RUN : 06UTC (Not active here)

MODEL PLOT PRICING
SIGN-UP FORM

FEATURES

Updated FOUR TIMES daily from the 00UTC, 06UTC, 12UCT and 18UTC model runs, available within ~ 8hrs after model runs
Extensive medium range coverage from present day up to 17 days out
Over 2500 plots
Customized for the South African region
Plots available at 1x1deg resolution from DAY1 - DAY 5, 2.5x2.5 deg DAY 9 - DAY 17
Images have been optimized for size, now in PNG format, about 1/3 the size of GIF images/1STWX/old, hence faster downloads
ANIMATE all your plots, whether its 1 plot or 47!

NOTES

Plot times for days 1 - 8 are for every 6 hours, centered on 02H00, 08H00, 14H00 and 20H00 SAST
24hr tendencies are centered on 14H00 SAST.
Plot times for days 8 - 17 : 00UTC & 12UTC runs - centered on 02H00 & 14H00 SAST; 24hr tendencies are centered on 14H00 SAST
Plot times for days 8 - 17 : 06UTC & 18UTC runs - centered on 08H00 & 20H00 SAST; 24hr tendencies are centered on either 08H00 or 20H00 SAST
Rainfall plots : 24hr totals are from 02h00-02H00 SAST, for all model runs, days 1-8, however, for the 06UTC & 18UTC runs, 24hr totals are calculated from 08H00-08H00 SAST for day 9 onwards

Please contact us regarding additional model products you would like to see or if you would like different regions around the globe plotted.

Click Guide to the Forecasts and Analyses for a general description of our model outputs.

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).








	ALEXANDER BAY 21/09 ALLDAYS 21/14 BEAUFORT WEST 24/04 BELA-BELA 25/09 BETHLEHEM 26/07 BISHO 22/07 BLOEMFONTEIN 30/07 CALVINIA 24/07 CAPE ST LUCIA 25/18 CAPE TOWN 22/06 CLANWILLIAM 26/09 DE AAR 26/09 DURBAN 23/14 EAST LONDON 21/09 ERMELO 27/10 FAURESMITH 28/08 FICKSBURG 30/04 GEORGE 19/06 GRAAF-REINETT 23/04 GRAHAMSTOWN 19/03 HERMANUS 21/12 JOHANNESBURG 27/11 JOUBERTINA 20/04 KIMBERLEY 29/11 KLERKSDORP 31/07 KOMATIPOORT 30/22 KROONSTAD 30/09 LADYSMITH 20/07 LANGEBAAN 19/10 LEPHALALE 28/12 LYDENBURG 19/07 MAFIKENG 28/12 MUSINA 20/15 NELSPRUIT 22/14 NEWCASTLE 20/06 OUDTSHOORN 24/07 PAARL 26/08 PHALABORWA 22/15 PIETERMARITZBURG 22/09 PLETTENBERG BAY 19/10 POLOKWANE 21/08 PORT ALFRED 20/08 PORT ELIZABETH 19/07 PORT ST JOHNS 21/13 POTCHEFSTROOM 32/07 PRETORIA 27/12 QUEENSTOWN 19/05 RICHARDS BAY 25/15 ROBERTSON 24/05 RUSTENBURG 27/10 SASOLBURG 28/11 SKUKUZA 27/12 SOWETO 27/11 SPRINGBOK 26/15 STILBAAI 21/07 SUTHERLAND 21/01 TZANEEN 21/12 ULUNDI 22/12 UMTATA 20/06 UPINGTON 31/12 VEREENIGING 29/10 VREDENDAL 27/11 VRYBURG 32/07 WELKOM 32/09 WITBANK 22/08 WORCESTER 25/07