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When to water outdoor plants (heat wave version) First, I would like to remind those of you who tend to fear the worst, that this weather is not out of the ordinary.
An excessive heat warning is a notice issued by the National Weather Service of the United States within 12 hours of the heat index reaching one of two criteria levels. In most areas, a warning will be issued if there is a heat index of at least 105 °F (41 °C) for more than three hours per day for two consecutive days, or if the heat index is greater than 115 °F (46 °C) for any period of time.
An excessive heat watch is a notice issued by the National Weather Service of the United States when the high temperatures reach anywhere within the range of 95 °F (35 °C) and 100 °F (38 °C) in the continental US.
A heat advisory is a notice issued by the National Weather Service of the United States. Local offices often have their own criteria. Local offices often have their own criteria. High values of the heat index are caused by temperatures being significantly above normal and high humidities , and such high levels can pose a threat to human life ...
At the Phoenix Zoo and Desert Botanical Garden, complex operations to keep animals and plants safe from climate change may help life in the wild. Extreme heat takes a toll on animals and plants ...
From June 25 to July 2, 2021, the Pacific Northwest experienced a record-breaking heat wave that sent the normally temperate region into Death Valley-like extremes that took a heavy toll on trees ...
Extreme cold warning NPW – Dangerously cold air temperatures and/or wind chills, capable of causing life-threatening medical conditions (such as severe frostbite and hypothermia) or death associated with accelerated heat loss from exposed skin, are forecast to meet or exceed locally defined warning criteria for more than three hours over at ...
Extreme heat has a way of exposing society’s vulnerabilities. And as extreme heat events become more frequent in the U.S., data shows that the poorest Americans will be most at risk.