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Robert Molleda, warning coordination meteorologist for the NWS in Miami, said West Palm Beach had heat index values of 105 degrees or greater for more than 130 hours last year. That broke the ...
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.
Extreme heat in the Southwest is testing iconic desert plants like agave. The Summary Increasingly frequent and severe heat waves in the Southwest are damaging some desert plants known for ...
A new color-coded heat warning system relies on magenta to alert Americans to the most dangerous conditions they may see this summer. The National Weather Service and the Centers for Disease ...
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 ...
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 ...
Dangerous, record-breaking heat is ongoing in the West, with the temperature in Phoenix reaching the triple digits every day for the last three weeks. Phoenix climbed over a scorching 110 degrees ...
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.