30-30-30 rule

proper noun

A rule of thumb for when dangerous wildfires may occur: there must be a temperature of at least 30°C, humidity not exceeding 30%, and wind speed less than 30km/h.

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Meanings

proper nounthe 30-30-30 rule
  1. firefightingA rule of thumb for when dangerous wildfires may occur: there must be a temperature of at least 30°C, humidity not exceeding 30%, and wind speed less than 30km/h.
Cite this entry
APA

30-30-30 rule. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/30-30-30%20rule

MLA

“30-30-30 rule.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/30-30-30%20rule. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “30-30-30 rule,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/30-30-30%20rule.

Source: 30-30-30 rule on Wiktionary, CC BY-SA 4.0.