The Meteorological Service of Singapore reports on 6 September 1999 for the South East Asian region: “Cloudy over northern Borneo. Hot spots were observed in Kalimantan and southern Sumatra, with some parts covered with smoke haze”.
Fig.1. Regional Surface Winds and Haze/Hot Spot Map, 6 September 1999
Forecasts of winds and surface pressure are available at http://www.gov.sg/metsin/flm.html
Fig.2-7. Fire Weather Index (FWI) forecast for tomorrow (left), next week (center) and the predicted FWI anomaly for this month (right) for the Western Pacific and the Pacific Ocean. The daily forecast refers to 12:00 hrs noon UTC (Greenwich) time; the weekly total forecast and the monthly forecasted anomaly refer to 00:00 hrs UTC which is local noon at dateline (180° longitude). Forecast time is 12:00 hrs noon UTC (Greenwich) corresponding to local evening time in mainland and insular SE Asia (updated: 8 September 1999).
The ASEAN Haze Action Online provides the following information:
Monitoring: Hyperlinks to institutions involved in regional monitoring and prediction of fire and smoke haze
Summary: Although the current fire weather conditions do under normal conditions not favour extensive land clearing by fire or escaping wildfires in Indonesia, the consequences of the large wildfires of 1997-98 must been taken into consideration. These fires had caused extensive degradation of primary and secondary forests along with the spreading of “alang-alang” (Imperata cylindrica) grasslands. These grasslands facilitate the spread of uncontrolled fires over large areas.