WMO is working on revising the Manual on GDPFS. This is whole overhaul from scratch. Now the Secretariat made the latest draft available online. It accepts comments from the member states by the end of July.
When the DPFS (Data Processing and Forecasting System) was created, the RSMC (Regional Specialized Meteorological Centre) and WMC (World Meteorological Centre) were both supposed to work on human-plotted weather charts. Now NWP (Numerical Weather Prediction) has overtaken most of the subjective analysis and forecast, so the centres (RSMC and WMC) are redefined to serve NWP products.
So I'm keen on the fate of present Attachment II-4 for graphical symbols of weather chart, including weather symbols (see my previous post). It won't be removed, but will be moved to the Manual on Codes.
2015-05-19
Monsoon (baiu) has come to Amami Islands
Today JMA announced the monsoon (baiu) has come to Amami islands, southwest side of Japan.
Attached is total precipitable water and wind vector at 700 hPa of 12UTC 18 May 2015 from NCEP analysis, visualized at earth.nullschool.net. Blue area illustlates most flow from Indian Ocean reaching Japan.
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