#HeatIndex

Ars Technica Newsarstechnica@c.im
2025-12-05
2025-08-18

Today’s humidity has gathered forces preparatory to an assault on humanity. It’s beautiful, if you can ignore the difficult hours that will follow!
#MistAtSunrise #scorcher #HeatIndex

Yellow and orange sunrise with waves of clouds hugging the hilltops
2025-07-26

Forget #HeatIndex. #WetBulb Globe Temperature Is Where It’s At.

"One of the most common terms we hear during the summer when discussing the weather is Heat Index. While the Heat Index can give you an idea of how dangerous the heat can be, there is another lesser known variable that may give a complete description, known as the #WetBulbGlobeTemperature.

"The Heat Index is a measure of how hot it feels to the human body, taking into account the temperature and the relative humidity. The higher either one value is, the higher the heat index and the greater the stress exerted on the body. Heat Index utilizes the temperature measured in the shade and therefore will likely be greater in the sun, where many activities take place. For temperatures taken in the full sunlight, Heat Indices can increase as much as 15°F. Humidity plays a major effect on cooling the body. If the humidity is high, sweat on the surface of the skin does not evaporate as quickly, slowing the cooling of the body. If the humidity is low, sweat evaporates too fast, leading to dehydration. [See link for Heat Index chart]

"Wet Bulb Globe Temperature (#WBGT) is similar to the Heat Index in that it is an indicator of the stress on the body from the heat. While it is not as well-known as the Heat Index, it’s not a new term. WBGT was developed in the 1950s after heat related illnesses affected the US armed services during the 1940s. After its implementation, there was a reduction in heat related illnesses during basic training. One fundamental difference between the Heat Index and WBGT is that the latter is calculated with the temperature measured in the sun. While Heat Index only takes temperature and Relative Humidity into account, WBGT takes several variables into account.

These variables include:

- Temperature
- Humidity
- Wind Speed
- Sun Angle
- Cloud Cover
- Physical Activity"

Read more:
dtn.com/forget-heat-index-wet-

#WetBulbTemperatures #GlobalWarming #HighHumidity #ExtremeHumidity #Heatwaves

2025-07-25

#HeatIndex versus #WetBulb temperatures

The world needs a new way to talk about heat

by Michael J. Coren
July 25, 2023

"[The heat index] warning system is not perfect. First, it assumes you’re resting in the shade, not working in the sun. If you’re exerting yourself outdoors, the effective heat index could be 15 degrees higher. Secondly, the heat index was built on the idea of a young and healthy adult — a bad assumption for the elderly, very young and sick."

Read more:
washingtonpost.com/climate-env

Archived version:
archive.ph/rwMSE

#ExtremeHeat #ExtremeHumidity #WetBulbTemperatures #ClimateChange #GlobalWarming

2025-07-22

New California tool ranks extreme heat danger by neighborhood. Here's how it works | LAist

It’s going to be hot this summer. And a new tool can help you figure out the risk that the temperature can pose to your health.

The California Communities Extreme Heat Scoring System — which the state is calling CalHeatScore — can tell you the level of heat-related health risk you face and point you to cooling resources in your area.

This pilot program ranks risk from extreme heat into four categories, from mild to severe. A ranking of “severe,” for example, could correspond with a higher temperature inland, as opposed to at the beach.

welchwrite.com/blog/2025/07/22

#california #heat #heatindex #weather #severe #danger #web #tool #shared

Meteorologist Austen OnekWDEFAustenOnek
2025-06-24

Expected temperatures in the SE US for Tuesday.

Expected #HeatIndex temperatures in the SE US for Tuesday.
Sherri Koehler (she/her)PDXyogini@toot.cat
2025-06-09

We’ve reached the time when the summer heat outweighs any desire for design & aesthetic. Portland is having a second 90F/32C day so I’ve deployed my janky looking, but very effective hack to block the only west-facing window in our home.

This window is one of those window boxes, so it not even remotely insulated, double-paned, or anything that would improve its efficiency. In the winter cold pours in from this space and in the summer this unshaded window belches temperatures above 105F/40C into the kitchen. On the positive side, our cat loves this space, he lounges on some carpet we put in the bottom and yells at birds.

If you’re struggling with rising temperatures and have access to a a place that sells construction materials, you might consider buying some of these R-Tech insulation panels to block windows. These are coated with Mylar on the side I’m facing out, towards the sun. It’s impressive how well they work!

I’ve been thinking I’ll order some insulated curtains for this space, but my wife has wondered if this fix is actually more effective! We might still hang some, but I’ll keep these two panels around for extremes.

#Summer #HeatWave #HeatIndex #KeepCool #HotWeather #Weather #pdxtst #QueerAgenda

A kitchen scene with an aluminum toaster and rice cooker sitting side-by-side on a shelf with an assortment of hot cereal to the left side of the rice cooker. A three tiered wire basket hangs from the ceiling to the left side and has assorted food & food related items in the baskets. 

In the background a window has been completely covered with two foam insulation panels. The R-Tech panels have been placed with blue tape along the edges. The two panels are also taped together where they meet. 

The panels are 2 feet by 4 feet and 1/2 inch wide. They are printed with blue lettering that has technical data, the brand “insulfoam”, and R-TECH.
Houston Public Mediahoustonpublicmedia
2025-05-13
2024-11-08

Just published and free to download #OpenAccess:
"#HeatIndex: An Alternative Indicator for Measuring the Impacts of Meteorological Factors on #Diarrhoea in the Climate Change Era: A Time Series Study in #Dhaka, #Bangladesh"
doi.org/10.3390/ijerph21111481
Led by Farhana Haque.
 
#ClimateHealth #HealthClimate #Health #GlobalHealth #Climate #ClimateChange #CCA #Adaptation #ClimateAdaptation #ClimateChangeAdaptation #PublicHealth #PlanetaryHealth #OneHealth #EcoHealth

Knowledge Zonekzoneind@mstdn.social
2024-09-28

The Mathematician’s #Sixth #Sense: What Is #Mathematical #Intuition? : Medium

How #HeatIndex, #DewPoint and Wet-Bulb Temperature Describe #Summer #Weather ($) : Sci Am

#Aging hits us in our 40s and 60s. But well-being doesn’t have to fall off a cliff. : Tech Review

Check our latest #KnowledgeLinks

knowledgezone.co.in/resources/

La Chaßne Météolachainemeteo@techhub.social
2024-08-29

L'occasion de rappeler ce qu'est le #heatindex. Développé par la National Weather Service (NWS). Son calcul est basé sur une formule qui prend en compte la température de l'air et l'humidité relative. Le résultat exprimé en degrés Fahrenheit ou Celsius n'est pas une mesure directe de la température, mais une estimation de la chaleur ressentie. Il diffÚre de l'humidex.

🐩🔗 twitter.com/lachainemeteo/stat
🕐 29/08 15:24

2024-08-27

WaPo: Record heat is closing out August in the Midwest, East: City-by-city forecasts (maybe paywall) washingtonpost.com/weather/202 #heatwave #heatindex #ClimateEmergency

Larry Felton Johnsonlarryfeltonj@journa.host
2024-08-25

The National Weather Service warns of gradually increasing heat index in Georgia over the next few days, possibly reaching record daily highs by Wednesday #CobbCounty #Climate #HeatIndex

cobbcountycourier.com/2024/08/

A somewhat abstract and cartoon-like drawing of a person wiping sweat from their brow while a red sun blazes down on them.  The Cobb County Courier logo is to the right of the image
Pablonius Monk đŸ‡ș🇩pabloniusmonk
2024-08-21

These climate activists are calling for parking reform in Dallas

While critics worry it could increase the number of cars parked on the street and make parking more difficult to find, proponents say the update to the decades-old parking ordinance would cut down on unused space and help the city grow economically.

keranews.org/news/2024-08-21/c

Meteorologist Austen OnekWDEFAustenOnek
2024-08-01

@WDEFNews12 area temperatures as of 5:30 PM EDT.

Meteorologist Austen OnekWDEFAustenOnek
2024-07-30

NWS Huntsville issues for DeKalb & Jackson Counties in the @WDEFNews12 viewing area From noon Wednesday to 7 PM CDT Thursday.

values up to 109 expected.

CelloMom On CarsCelloMomOnCars
2024-07-19

The is enduring life-threatening heat indexes above 140 degrees

"Some locations have seen the , or how it feels when factoring in the humidity, reach 140 to 150 degrees Fahrenheit (60 to 65 Celsius), fueled by an intense heat dome, the warmest water temperatures in the world and the influence of human-caused climate change."

washingtonpost.com/weather/202

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