Wildfires around Los Angeles blanket city in smoke
Out-of-control wildfires surrounding Los Angeles continued to grow Tuesday, forcing families to evacuate and blanketing the sky with choking smoke.
Out-of-control wildfires surrounding Los Angeles continued to grow Tuesday, forcing families to evacuate and blanketing the sky with choking smoke.
Environment
22 hours ago
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Tree performance is generally considered as the consequence of the interplay between ecological and evolutionary processes. However, the differential effect among species and the portion of those differences remain largely ...
Plants & Animals
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Researchers analyzed meteorological data from nine Upper Midwest states from 1979–2021, tracking trends in extreme heat and cold over every 4-kilometer square of that territory. They found striking regional differences ...
Environment
Aug 21, 2024
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Governments, medical institutions and other bodies require accurate models on health-related matters in order to better organize their activities.
Environment
Aug 21, 2024
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Even though climate change is bringing more frequent and severe heat waves, there is no standard, global way to measure heat-wave severity, and existing indices have different thresholds for defining dangerous heat-stress ...
Earth Sciences
Aug 7, 2024
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When summer arrives in the UK, it seems to appear suddenly. One day we can be wrapped up cozy winter woolies—the next we are panic buying fans and ice lollies.
Plants & Animals
Jul 18, 2024
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Severe wildfires increase with a decrease in prescribed burns—but new research shows that in some places across the United States there may be fewer opportunities to safely burn in the future.
Earth Sciences
Jul 1, 2024
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Hail the size of grapefruit shattered car windows in Johnson City, Texas. In June, 2024, a storm chaser found a hailstone almost as big as a pineapple. Even larger hailstones have been documented in South Dakota, Kansas and ...
Environment
Jun 27, 2024
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Crews battling wildfires across California on Tuesday, including the Post fire in Los Angeles County, face another day of warm summer heat and gusty winds that will push flames into tinder-dry fuel, weather forecasters warned.
Environment
Jun 18, 2024
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Extreme heat and high humidity smothered the central and northeastern United States on Tuesday, with temperature records expected to melt away in the coming days, authorities warned, as wildfires sizzled in the west.
Environment
Jun 18, 2024
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Humidity is a term for the amount of water vapor in the air, and can refer to any one of several measurements of humidity. Formally, humid air is not "moist air" but a mixture of water vapor and other constituents of air, and humidity is defined in terms of the water content of this mixture, called the Absolute humidity. In everyday usage, it commonly refers to relative humidity, expressed as a percent in weather forecasts and on household humidistats; it is so called because it measures the current absolute humidity relative to the maximum. Specific humidity is a ratio of the water vapor content of the mixture to the total air content (on a mass basis). The water vapor content of the mixture can be measured either as mass per volume or as a partial pressure, depending on the usage.
In meteorology, humidity indicates the likelihood of precipitation, dew, or fog. High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. This effect is calculated in a heat index table, used during summer weather.
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