Skip to main content

Resource Catalog


Type: Journal Article
Author(s): Fantina Tedim; Vittorio Leone; Malik Amraoui; Christophe Bouillon; Michael R. Coughlan; Giuseppe M. Delogu; Paulo A. Martins Fernandes; Carmen Ferreira; Sarah M. McCaffrey; Tara K. McGee; Joana Parente; Douglas Paton; Mário G. Pereira; Luis M. Ribeiro; Domingos Xavier Viegas; Gavriil Xanthopoulos
Publication Date: 2018

Every year worldwide some extraordinary wildfires occur, overwhelming suppression capabilities, causing substantial damages, and often resulting in fatalities. Given their increasing frequency, there is a debate about how to address these wildfires with significant social impacts, but there is no agreement upon terminology to describe them. The concept of extreme wildfire event (EWE) has emerged to bring some coherence on this kind of events. It is increasingly used, often as a synonym of other terms related to wildfires of high intensity and size, but its definition remains elusive. The goal of this paper is to go beyond drawing on distinct disciplinary perspectives to develop a holistic view of EWE as a social-ecological phenomenon. Based on literature review and using a transdisciplinary approach, this paper proposes a definition of EWE as a process and an outcome. Considering the lack of a consistent “scale of gravity” to leverage extreme wildfire events such as in natural hazards (e.g., tornados, hurricanes and earthquakes) we present a proposal of wildfire classification with seven categories based on measurable fire spread and behavior parameters and suppression difficulty. The categories 5 to 7 are labeled as EWE.

Online Links
Citation: Tedim, Fantina; Leone, Vittorio; Amraoui, Malik; Bouillon, Christophe; Coughlan, Michael R.; Delogu, Giuseppe M.; Fernandes, Paulo M.; Ferreira, Carmen; McCaffrey, Sarah; McGee, Tara K.; Parente, Joana; Paton, Douglas; Pereira, Mário G.; Ribeiro, Luís M.; Viegas, Domingos X.; Xanthopoulos, Gavriil. 2018. Defining extreme wildfire events: difficulties, challenges, and impacts. Fire 1(1):9.

Cataloging Information

Alaska    California    Eastern    Great Basin    Hawaii    Northern Rockies    Northwest    Rocky Mountain    Southern    Southwest    International    National
  • control capacity
  • disaster
  • EWE - extreme wildfire event
  • large fire
  • megafires
  • social-ecological system
  • transdisciplinary
  • wildfires
Record Last Modified:
Record Maintained By: FRAMES Staff (
FRAMES Record Number: 25812