| tornado outbreak(expression, nature, environment, disaster) |
| tropical depression(expression, nature, disaster, cyclonic) |
| tropical low(expression, nature, disaster, cyclonic) |
| typhoon haiyan(expression, nature, storm, disaster) |
| typhoon ioke(expression, nature, storm, disaster) |
| typhoon john(expression, nature, storm, disaster) |
| typhoon tip(expression, nature, storm, disaster) |
| upper tropospheric cyclonic vortex(expression, nature, disaster, cyclonic) |
| volcanic eruption(expression, nature, environment, disaster) |
| volcanic event(expression, nature, environment, disaster) |
| wake low(expression, nature, disaster, cyclonic) |
| water shortage(expression, nature, environment, disaster) |
| weather event(expression, nature, environment, disaster) |
| wild fire(expression, nature, environment, disaster) |
| abbotsford landslip(expression, nature, environment, disaster, landslide) |
| aberfan disaster(expression, nature, environment, disaster, landslide) |
| agulhas slide(expression, nature, environment, disaster, landslide) |
| alaska earthquake(expression, nature, environment, disaster, landslide) |
| aldercrest-banyon landslide(expression, nature, environment, disaster, landslide) |
| alma-ata debris flows(expression, nature, environment, disaster, landslide) |