Bureau of Meteorology Public Weather Forecast District boundaries for Australia. Forecasts for the areas delineated by these boundaries are issued by the Bureau of Meteorology on a routine basis. The districts for Northern Territory are used for Warnings only.
Metadata ConstraintsThe authoritative (Point of truth) full version of this metadata record is under copyright, and available from [ http://www.bom.gov.au/metadata/19115/ANZCW0503900001 ]. Licence details about harvesting and derivative versions of the metadata are included there.
PurposeTo show the Public Weather Forecast Districts
Public Weather Forecast Districts are based on the generalised maps shown in the Bureau of Meteorology's Weather Services Handbook publication, Annex 1, A1-2-1. The dataset (coverage) was created by aggregating and disaggregating a number of geospatial (line and polygon) data:
1.Australian Rainfall Districts based on AUSLIG Topo 250K topographic database (1: 250,000) and BOM 1:250,000 AMG boundary plans.
2.AUSLIG Topo 100K Coastline product (1:100,000) with additional boundaries from BOM 1:5,000,000 state (boundary) Rainfall Map of Queensland (M1, 1981); AUSLIG 1: 2,500,000 drainage coverage of Queensland; BOM 1: 1,000,000 state (boundary) Rainfall Map of Tasmania (M19, 1972); 1986 Legal Local Government Area boundaries South Australia plus "the South Australian Government Gazette, 23 October 1997, Section 37" with "Definition of Fire Ban District Boundaries"; and Australian Bureau of Statistics Local Government Areas for 2000 and 2006 (scales of up to 1: 250 000)
The mainland of Australian coastline, including islands within 12 nautical miles, was buffered to 12 nautical miles and Tasmania to 5 nautical miles. The exceptions to this rule are the inclusion of Abrolhos group of islands (Western Australia) and Capricorn and Bunker Islands (Queensland). Isolated buffered islands in Torres Strait were incorporated into the area of Queensland forecast district of Peninsula with the international border between Australia and Papua New Guinea being used as the northern boundary of this region. Likewise, in Tasmania, the forecast districts were extended to include King Island and Flinders Islands. These extensions included islands within 5 nautical miles. Any Bass Strait Islands more than 5 nautical miles north of Flinders Island and 12 nautical miles south of Victorian border were excluded. The buffered segments were generalised to 0.025 degrees.
In September 2006, the forecast district of Southern Coastal in Western Australia split into South Coastal and Southeast Coastal. The field, FCST_CODE added to ensure a unique identifier for each region and Field, NUMBER renamed to FCST_NUM.
In December 2006, the boundary between South Coastal and Southeast Coastal was modified to ensure that the Local Government Area of Jerramungup was not split.
In February 2008, several boundaries in Western Australia were aligned to Local Government Areas of 2006. The Australian Capital Territory was included as a district. Some subtle changes in forecast names were made.
In September 2010, the boundaries in southern NSW were changed with a new district of Snowy Mountains being created. Due to this change, the numbering of districts was altered.
In November 2010, the Victorian boundaries were changed to align with the Country Fire Authority's Total Fire Ban districts.
In June 2011, the boundaries for Tasmania were changed as part of the upgrade to the new forecasting system.
In October 2011, the boundaries in South Australia were changed for the the new forecasting system. One major change being the addition of the Adelaide Metropolitan forecast district.
In October 2012, the WA district of Interior was split into North and South Interior. To correspond with marine zone boundaries, local and inland water districts were included as void areas. The attributes of AREA, PERIMETER, NAME_ and NAME_ID were deleted. Mulitpart polygons, rather than single-part polygons were created for each district.
In October 2013, no boundaries were changed, but the "Northwest" region in Queensland was altered to "North West".
In October 2014, boundaries for Northern Territory changed. These boundaries were derived from a number of different datasets including Local Government Areas, Roads, Rivers and lines of longitude and latitude. These changes completed the upgrade of the forecasting system for the whole of Australia. In addition, field names were changed to to align more closely with those used in the NexGen system and the AMOC Area Code (AAC) was added for linkage to forecast products. The fields are AAC, DIST_NO, DIST_NAME, GROUP_NAME and STATE_CODE.
In October 2015, there was a minor change in NT to the joint boundary of Daly, Carpentaria and Arnhem to align with the Katherine Fire Protection Area.
In November 2015, there was a minor change in SA due to the expansion of the Cultana Training Area that affected the joint boundary of North West Pastoral, Flinders and Eastern Eyre Peninsula.
In November 2016, the more detailed 1:100K coastline was replaced with the 1:2.5 M coastline with limited islands. This change ensures consistency of coastlines with other Bureau products.