Skip to main content
Figure 9 | Journal of Applied Volcanology

Figure 9

From: Improvements of volcanic ash fall forecasts issued by the Japan Meteorological Agency

Figure 9

Sample of Full Forecast (graphical format) in the new VAFF format. Translations from Japanese as numbered below. *1 Volcano name: Sakurajima volcano. *2 Forecast title. *3 Time of issue and responsible observatory. *4 Summary: An eruption occurred at 08:04 on November 7. A 3500 m eruption plume extended to south was observed. An ash fall of moderate quantity is forecast for Kagoshima city (Sakurajima), and areal extent of ash fall is forecasted to Mishima village. *5 Forecast of municipalities affected and start time and quantity of ash fall: Forecasts of ash fall quantity and municipalities affected are as follows. Moderate: Kagoshima city. Little: Ibusuki city et al. Forecast starts of ash fall at municipalities are as follows. Before 09:00 on November 7: Kagoshima city and Tarumizu city. 09:00 to 10:00: Ibusuki city and Minami-kyusyu city. 12:00 to 13:00: Minami-osumi town. 13:00 to 14:00: Mishima village. *6 Precautions for disaster prevention. People in the open air in areas where moderate ash fall is forecast should use an umbrella or wear a face mask to minimize exposure to ash. People driving vehicles should drive slowly. *7 Reference: Categories of ash-fall quantity. Much: Ash deposits more than 1 mm thick; low visibility by ash fall and roads completely covered by ash; Stay Indoors. Moderate: Ash deposits 0.1 to 1 mm thick; recognizable ash fall and road markings partly obscured by ash; Attention. Little: thin ash deposits, less than 0.1 mm thick. *8 Legend: “Yellow filled area”: Area of ash fall of moderate quantity. “Gray filled area”: Area of ash fall of little quantity. Thick black line: boundary of municipality to be affected by ash fall. *9 Time of forecast shown below (*10). *10 Forecast areal extent of ash fall for each quantity category.

Back to article page