Caribbean Disaster Emergency Management Agency passage of Hurricane Ivan. During the mid-1990s, the sudden eruption by the Soufriere Hills volcano in Montserrat also caused the CDEMA to spring into action, to provide additional support to the people on the island. The Caribbean Disaster Emergency Response Agency (CDEMA) also regularly monitors the Soufriere Hills volcano, in addition to the active undersea volcano named Kick 'em Jenny to the north of Grenada. Members of the Regional Security System have requested military and logistical assistance through that agreement after natural disasters as well. Towards the end of the twentieth century, severe weather had been increasing, especially in the
Volcano in Germany, Shiprock in New Mexico, and Zuidwal volcano in the Netherlands. Edinburgh Castle in Scotland is famously located atop an extinct volcano. Otherwise, whether a volcano is truly extinct is often difficult to determine. Since "supervolcano" calderas can have eruptive lifespans sometimes measured in millions of years, a caldera that has not produced an eruption in tens of thousands of years is likely to be considered dormant instead of extinct. Some volcanologists refer to extinct volcanoes as inactive, though the term is now more commonly used for dormant volcanoes once thought to be extinct. It is difficult to distinguish