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Weather vs. climate: Why a cold winter doesn't refute climate change

Published: Thursday, January 04, 2018 @ 7:49 AM

What Is A Nor'easter?

Call it fortuitous timing. Hours before U.S. President Donald Trump issued a tweet last week panning climate change, a University of Georgia climatologist offered a lengthy pre-emptive explanation.

>> ‘Bombogenesis': What is it and why is everyone saying it?

“What we are seeing right now in the United States is just … well … wait for it … winter,” wrote Marshall Shepherd, director of the atmospheric science program at the University of Georgia and a former president of the American Meteorological Society.

>> What is a Nor’easter and how does it form?

Shepherd wrote that he would urge people to keep in mind that “weather is mood, climate is personality” and that weekly weather patterns say little about longer-term climate change.

>> Trump tweets ‘good old Global Warming’ could help with frigid temps

It came about 12 hours before Trump tweeted that forecasts were calling for record cold New Year’s Eve temperatures.

>> See the tweet here

Shepherd wrote that even as climate warms, the seasons will always change to winter and yield frigid weather, snowstorms and blizzards. After all, he said, winter is related to how the Earth is tilted on its axis as it revolves around the sun.

>> Read more trending news 

Concludes Shepherd: "For now, the message for this week and the next seven days is that winter is reminding us that it still exists and always will even as our climate warms. Prepare accordingly, stay warm and help others."

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Heat Index: What is it? Why does it matter?

Published: Thursday, May 24, 2018 @ 6:35 AM

Meteorologist Kirstie Zontini looks into what the heat index is and why it is important.

 In the winter we talk about wind chill and in the spring and summer, it is the heat index that is important, according to Storm Center 7 Meteorologist Kirstie Zontini.

RELATED: What is UV Index and how to protect your skin

Both are apparent or "feels like" temperatures. The heat index is a "feels like" temperature that looks at the actual air temperature and how much moisture is in the air, either with relative humidity or dew point. When it is hot, it can be uncomfortable. When it is hot and muggy, it is a different level for our bodies. 

The amount of moisture in the air impacts how well our bodies can cool off. When you are hot, your body starts to sweat, that sweat is then evaporated from your body into the atmosphere. If the moisture content of the air is high, it is harder for that evaporation to take place, and harder then for your body to cool down. 

LISTEN: Cloudy with a chance of Podcast: A podcast for weather fans 

Here is the actual equation for calculating heat index: 

 

HI = -42.379 + 2.04901523*T + 10.14333127*RH - .22475541*T*RH - .00683783*T*T - .05481717*RH*RH + .00122874*T*T*RH + .00085282*T*RH*RH - .00000199*T*T*RH*RH

 

As the air temperature and relative humidity increase, the heat index will as well. If it is 88 degrees with a relative humidity of 55%, the heat index would be 93 degrees. If it was 100 degrees with a relative humidity of 55%, the heat index would reach 124 degrees. This makes being outside when it is hot and humid more dangerous. 

  • 80-90° - Use caution. Prolonged activity outside or exposure could be dangerous. 
  • 90-103°- Use extreme caution. Lengthy exposure can cause heat cramps, heat stroke or heat exhaustion
  • 103-124°- Danger! Heat cramps and heat exhaustion likely. Prolonged exposure can lead to heat stroke. 
 

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WPAFB Thursday Weather: Sunshine, low humidity continue 

Published: Thursday, May 24, 2018 @ 12:02 AM

WRIGHT PATTERSON AIR FORCE BASE—Humidity levels remain low for the day as plenty of sunshine is expected. Temperatures reach back into the lower 80s.

RELATED: 5-Day Forecast

Friday’s forecast continues the calm weather and warm temperatures in the mid-80s.

Heat and humidity begin to build for the weekend with the chance for pop-up thunderstorms Saturday and Sunday.

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Clear skies overnight; threat for Memorial Day weekend storms

Published: Wednesday, May 23, 2018 @ 3:30 AM
Updated: Wednesday, May 23, 2018 @ 5:10 PM

Plenty of sunshine with low humidity this afternoon.

Skies will be clear with comfortable conditions as temperatures drop into the middle 50s, Storm Center 7 Chief Meteorologist Eric Elwell said.

QUICK-LOOK FORECAST

  • Quiet and comfortable overnight
  • Air Quality Advisory Thursday for Butler, Warren counties
  • Memorial Day weekend: Heat, humidity, threat for pop-up storms

>> WHIO Live Doppler 7 HD Interactive Radar

DETAILED FORECAST

>> Air Pollution Advisory Thursday for Butler, Warren counties

Thursday: Lots of sunshine is expected with temperatures rebounding back into the lower 80s. Humidity levels will remain low. An Air Quality Advisory is issued for Thursday for Butler and Warren counties in anticipation of high ozone levels.

An Air Quality Advisory is in place for Thursday in Butler and Warren counties

>> Tropical System may form over Memorial Day Weekend

Friday: Mostly sunny skies are in the forecast but temperatures will heat up into the middle 80s.

>> What is the UV index and how do you protect your skin?

>> County-by-County Weather

Saturday: The heat and humidity will begin to build with partly cloudy skies. There is a chance for some afternoon and evening pop-up thunderstorms. Highs will be in the upper 80s.

>> LISTEN: Cloudy with a chance of Podcast: A podcast for weather fans 

>> #SkyWitness7 How to spot the planet Jupiter through the weekend

Sunday: It will be quite warm and humid with partly cloudy skies and a chance for pop-up thunderstorms.

>> 5-Day Forecast

Memorial Day:  Expect it to be partly cloudy and humid Monday with a continued chance of mainly afternoon/evening pop-up storms. Highs will be in the upper 80s.

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Air Quality Advisory today in Butler County

Published: Thursday, May 24, 2018 @ 6:00 AM

butler wx

The Southwest Ohio Air Quality Agency has issued an Air Quality Advisory for Thursday, May 24, for Butler, Clermont, Hamilton and Warren counties. 

MORE: Middletown restaurant robbery suspect caught in Atlanta

The agency expects to see levels of ozone in the “unhealthy for sensitive groups” range on the Air Quality Index, according to a statement.

Here are actions the agency suggests residents takes on Air Quality Advisory days:
  • Take the bus, carpool, bike, or walk instead of drive
  • Refuel your vehicle after 8 p.m.
  • Do not idle your vehicle
  • Combine trips or eliminating unnecessary vehicle trips
  • Keep your vehicle maintained with properly inflated tires and timely oil changes
  • Avoid use of gasoline-powered lawn equipment 
  • Avoid use of oil-based paints and stains 
  • Never burn leaves or other yard trimmings
  • Suspend use of fire pits, campfires and charcoal grills
  • Conserve electricity by turning out lights and unplugging unused appliances and electronics

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