1. Florida State University: Full index | Surface | Drifting buoy | Upper air | Climatic data reports (16/01/00)
2. College of Dupage Nexlab: Full index | Surface | Upper air (17/03/01)
3. UCSD: Full index | Upper air | Aviation reports | Daily collectives of ship | buoy reports (16/01/00)
4. All global METAR reports and TAF forecasts from NWS. These are METeorological Airport Reports (i.e. current weather) and Terminal Area Forecasts international METAR and TAF code. The latest can be called up by entering the ICAO code, or you can download hourly (6 hourly for TAFs) global files for the past 24 hours. The Aviation Weather Users Guide by the BoM is helpful in explaining these codes. (16/01/00)
5. International current raw data for the entire globe from NWS (13/04/00)

Raw (often coded) real time data is available from the above sites which provide a continuously updated feed of essential surface and upper air data from the Global Telecommunications System (GTS) of the World Meteorological Organisation. The data for each particular time is added to a file that carries the date and time as its name; e.g. 97010100 would signify data for 00 UTC on 1 January 1997. Main synoptic hours for surface data are 00, 06, 12 and 18 UTC; intermediate hours are 03, 09, 15 and 21 UTC. About 80% of surface data is received within one hour of observation time, but late reports, corrections, and in particular ship reports, keep coming in for some hours. Main hour files are typically 95% complete after 6 hours and 99% after 12 hours.

Australia is one of the few countries in the world which is out of line with WMO standard times of observation. You will need to look in the files for 02, 05, 08, 11, 14, 17, 20 and 23 UTC for eastern Australian data as well as New Guinea and some Pacific Islands, and 01, 04, 07, 10, 13, 16, 19 and 22 UTC for WA data. New Zealand data normally follows WMO standards, but will be found in the same files as eastern Australian data during NZ daylight saving time. If all this doesn't put you off, see Understanding Raw Data in the Reference section for some more information. Alternatively, just download the archive charts from the main index which are based on the 23, 00 and 01 UTC files of this data.