Wiktionary英語版

出典：Wiktionary

red flag warning

出典:『Wiktionary』 (2025/10/14 20:17 UTC 版)

名詞

red flag warning (plural red flag warnings)

  1. (meteorology, US) A warning issued by the United States National Weather Service that conditions are ideal for wildfires.
    Synonym: Red Flag
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ウィキペディア英語版

出典：Wikipedia

Red flag warning

出典:『Wikipedia』 (2011/05/22 20:04 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

A Red Flag Warning is a forecast warning issued by the United States National Weather Service to inform area firefighting and land management agencies that conditions are ideal for wildland fire ignition and propagation. After drought conditions, and when humidity is very low, and especially when high or erratic winds which may include lightning are a factor, the Red Flag Warning becomes a critical statement for firefighting agencies, which often alter their staffing and equipment resources dramatically to accommodate the forecast risk. To the public, a Red Flag Warning means high fire danger with increased probability of a quickly spreading vegetation fire in the area within 24 hours.

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