• Introduction
  • About the Module
  • Flooding in South Africa
  • About the Case
• Overview of the Rainfall and Flooding Season
  • Rainfall Accumulation Data
  • Provincial Seasonal Rainfall Graphs
  • Provincial Seasonal Rainfall Map
  • Station Rainfall Maps
• Combining Hydrological and Rainfall Data
  • Combined 7-Day Rainfall Accumulation vs. Dam Percent Capacity
• Satellite and NWP Data
  • Overview
  • WV Imagery Overlaid with Model Wind Fields
  • Upper-Level Low over Namibia
  • Moisture Advection
  • Comparing Cyclonic and Anti-Cyclonic Systems
  • Direction of the System
• RADAR Rainfall Estimates
  • SAWS Radar
  • Radar Data for 21 January 2010
• Hydro-Estimator
  • Overview
  • HE Data for 21 January 2010
• Integrating the Data
  • Making the Forecast
  • Taking Action
  • Combined 15-Day Rainfall Accumulation vs. Dam Percent Capacity
  • Real-Time Vs. Predicted Percent Capacity of the Dam
  • Conclusion
• Soil Moisture Products
  • ASAR GM
  • ASCAT
  • SMOS
• Flash Flood Guidance
  • SAWS Flash Flood Guidance System
• Conclusion
  • From 1996 to 2010
  • Recommendations

Rainfall Accumulation Data

The South African Weather Service’s Climate Information Service provides rainfall accumulation data measured in mm in five-minute intervals, 24 hours per day. The raw data are averaged for each day, and monthly averages are provided for stations of interest. Graphs and maps are used to show the distribution of rainfall as well as rainfall totals versus seasonal averages. For more information about these data, contact the Climate Information Service at www.weathersa.co.za.

In this section, we will look at three types of rainfall data for the case: provincial seasonal rainfall graphs, provincial seasonal rainfall maps, and station rainfall maps.