{
 "id": "ev-257",
 "slug": "heat-wave-us-2018-07-23",
 "title": "Heat wave in United States, 23 to 31 July 2018",
 "type": "heat_wave",
 "status": "closed",
 "start": "2018-07-23",
 "end": "2018-07-31",
 "peakDay": "2018-07-25",
 "countries": [
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 "footprint": {
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  {
   "date": "2018-07-29",
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  {
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