How Well do Heat Wave Warnings Work?


U.S. Heat Wave and Earth’s Energy Balance

U.S. Heat Wave and Earth’s Energy Balance (Photo credit: NASA Goddard Photo and Video)

Are heat warning systems effective?(10 page pdf, Ghasem (Sam) Toloo, Gerard FitzGerald, Peter Aitken, Kenneth Verrall and Shilu Tong, Environmental Health, Apr. 5, 2013)

Today we review an analyses of a number of case studies or reports on the effectiveness and cost of “heat warning systems” (HWS) or “heat health warning systems” (HHWS). Those studies which had cost benefit estimates showed that having an effective warning system more than pays for itself. Further, the main factor that prompted the public to take action was the perceived threat of a heat wave which would encourage agencies responsible for public warnings (such as the national meteorological service) to improve how they communicate the warnings. Underlining the need to improve heat warning is the greater frequency of heat waves, as climate warming proceeds, especially in large cities where there may be twice or triple the number experienced now.

To see Key Quotes and Links to key reports about this post, click HERE

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