Hey Ray! What Is Upsloping?
I got asked, Hey Ray...Explain upsloping? It is a word meteorologists in the area use a lot during winter because winter is the season where upsloping's impacts are most noticeable.
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I got asked, Hey Ray...Explain upsloping? It is a word meteorologists in the area use a lot during winter because winter is the season where upsloping's impacts are most noticeable.
It is pretty basic knowledge that the Sun is much bigger than the Moon. Meteorologist Ray Petelin explains that they appear the same size in the sky because of some cool, mathematical coincidences.
Did you know your shadow is longer in the winter than in the summer? Meteorologist Ray Petelin explains why.
Light lets us see things, but did you know light can make things disappear, too? Meteorologist Ray Petelin has a simple experiment that shows this in action.
Pittsburgh has seen a lot of different weather on Christmas Day. KDKA Meteorologist Ray Petelin and his daughter Elizabeth take a look back at some of the notable weather to hit Pittsburgh on Christmas Day.
The reason some things float, and others don't is explained by the Archimedes Principle. This week, Meteorologist Ray Petelin shows us how small changes in an object can make a big difference in how buoyant that object is.
Meteorologst Ray Petelin finds out how to spot black ice, how to more safely drive on it, and what to do if you start to slide.
Candles are neat, calming to some and full of science.
Train conductors and orchestra conductors are great, but we are going to learn more about heat conductors.
Math is a great prediction tool. You can even used grids disguised as card tricks to predict where a card will be. This week, Meteorologist Ray Petelin shows us what he calls a "Raymix" of a math-based card magic trick he showed us in one of the first Hey Ray segments.
After tornadoes hit our area, I get some very good questions, and hear some untrue myths. One of them is the misconception that tornadoes don't form near mountains, valleys or lakes.
Water and electricity should never mix. I think everyone knows that. In this experiment, though, we are going to do an experiment with static electricity and water. All we need is a balloon, a gentle stream of water, and some hair.
Many people love the fall because of the colors foliage becomes before they drop their leaves.
When you hear the word halo, you may think of an angel. The topic here is halos, but these ones are in the sky, and something I get asked about a lot.
I have a new problem this week. I need to get a round coaster through a square hole without ripping the paper.
Did you ever notice your breath can heat and cool things? Meteorologist Ray Petelin shows us the science of how that works!
You certainly know the dark color of pop, but did you know you can use milk to take the color out of it? Ray Petelin shows you the science in a new Hey Ray!
Lighting a candle seems pretty normal, and pretty easy, but sometimes, the way it lights can be anything but normal. Ray Petelin breaks down the science in a new Hey Ray!
Have you ever been sitting around a campfire, get up and move, only to have the smoke you were trying to avoid follow you? Well, as Ray Petelin explains, there's a scientific reason for that!
Whether you call it pop or you call it soda, there's a way to make the can go pop without cracking the tab! Ray Petelin shows you how in a new Hey Ray!
Spots on the Sun's surface can tell us a lot about what is going on with the Solar Cycle. Ray Petelin explains why they're important to watch in a new Hey Ray!
You may have heard us talk about "meteorological seasons" that don't match up with the seasons you typically see on the calendar. While that may sound weird, there is a reason meteorologists use these different dates. Ray Petelin explains in a new Hey Ray!
One viewer wrote in to ask Ray Petelin, why do storms have different names around the world? Well, while it's true they do go by different names around the world, they're still the same kind of storms.
As summer winds down, we start to reach the peak of hurricane season, which leads to a lot of questions of how hurricanes form. Ray Petelin explains in a new Hey Ray.
Some kind of clouds can help predict the weather.
The cold temperatures are sticking around through next week, and we could see some snow flurries on Saturday.
Police are searching for a home invasion suspect in Pittsburgh's Squirrel Hill neighborhood.
Two trophy-class antlered white-tailed deer were illegally killed in Forest County, Pennsylvania, the Game Commission said.
Many students in Pittsburgh are doing great work and research at many of the city's universities.
West Virginia Gov. Patrick Morrisey said the family expects Andrew Wolfe to be in acute care for another two to three weeks.
A Pittsburgh attorney has filed a petition on behalf of the family of a Colombian man killed in a U.S. military strike on a boat in the Caribbean.
Republican Rep. Brian Fitzpatrick said he was readying a plan that would extend the Affordable Care Act subsidies for two years.
President Trump, facing criticism that he's focused more on international issues than kitchen-table concerns, will rev up his domestic messaging, two GOP sources said.
Authorities say the FBI has arrested a man suspected of placing pipe bombs outside RNC and DNC headquarters on the eve of the Jan. 6, 2021, Capitol riot.
The Trump administration says it will withhold funds for administering SNAP food aid in most Democratic-controlled states starting next week unless they provide data about those receiving the assistance.
Federal funding will finally be available to thousands of families in Pennsylvania to help pay their heating bills.
Electric prices in Pennsylvania are going up next month.
Saturday's grand opening included live music, food, and a meet-and-greet with Lego Master Krist Kay.
Thursday will be the first time many people cook and host Thanksgiving dinner - here's how you can avoid illness and danger.
To much fanfare, the 51st Aldi opened in the Pittsburgh area on Thursday morning.
Heather and David are taking a look back at the week.
The 5th annual PTL Toy Drive is tomorrow!
Downtown Pittsburgh is coming alive with a holiday flair.
For the first time in nearly a quarter century, the Pittsburgh Ballet Theatre is unveiling a brand-new version of "The Nutcracker."
The stars are in town for Steel City Con. Chris DeRose has more about what to expect.
Veterans are outraged after learning about damage done to gravesites at a cemetery in Fayette County.
Artificial intelligence is watching where people park in Pittsburgh.
Drivers who were convicted of infractions years ago are being told to surrender their licenses or file costly appeals because Allegheny County never processed the paperwork.
For most students, the most dangerous part of their day is going to and from school.
Shopping malls are under threat from online shopping and disappearing customers, and many are facing the wrecking ball.
A CDC vaccine panel voted to stop recommending the birth dose of the hepatitis B vaccine.
Western Pennsylvania counties are seeing vaccination rates fall among school-aged children.
The discussion happens every year: shoveling snow can lead to heart attacks, and one AHN cardiologist explains why it's a risk.
A little boy from Delaware County is getting his once-in-a-lifetime wish, just in time for the holidays.
Consumers with the imported pans should throw them away due to the severe health risks posed by lead, the agency warns.
Matt Campbell was hired as Penn State's coach, ending a two-month search by the Nittany Lions to find James Franklin's successor.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
The Panthers and Badgers' 2026 game has been canceled, but the schools will meet in Dublin in 2027.
Skenes and Dunne joined a two-day USO Tour and visited sailors abord the USS Gerald R. Ford and the USS Mahan.
It all starts Friday night at the Petersen Events Center in Oakland.
Members of the Newspaper Guild of Pittsburgh voted last week to end their three-year-long walkout.
Norfolk Southern railroad worked with the state of Ohio and Youngstown State University to revive plans for a $20 million first responder training center near the site of the worst derailment in a decade in East Palestine, Ohio.
A report on the future of water in central Ohio warns that industrial demands for water will skyrocket at the same time experts expect farmers will need to regularly irrigate their fields.
The U.S. Department of Energy says it's loaning $1 billion to help finance the restart of the nuclear power plant on Pennsylvania's Three Mile Island.
A new Barnes & Noble is coming to Pittsburgh.
Vanessa Hudgens and former Pittsburgh Pirates player Cole Tucker welcomed their second child.
Christina Aguilera and Liev Schreiber were spotted at Wednesday's Pittsburgh Penguins game at PPG Paints Arena.
Jimmy Cliff, who famously sang about the "many rivers" we all must cross, has died after suffering a seizure and pneumonia, his family say.
Donald Glover, who performs under the moniker Childish Gambino, revealed he suffered a stroke last year, which forced him to cancel his tour.
Fans of Jeff Goldblum are seeing double.
Stay on top of local weather with meteorologist Mary Ours’s forecast!
Police are searching for a home invasion suspect in Pittsburgh's Squirrel Hill neighborhood.
Stay on top of local weather with First Alert Meteorologist Ray Petelin's forecast!
Air Force Staff Sgt. Andrew Wolfe is "slowly healing" after last week's shooting in Washington, D.C., West Virginia Gov. Patrick Morrisey said Friday.
Many students in Pittsburgh are doing great work and research at many of the city's universities.
Pitt's regular season has ended with an 8-4 record.
Pitt's five-game winning streak came to an end with a 37-15 loss to Notre Dame.
Mason Heintschel set a new Pitt freshman single-game passing record in the Pitt win at Acrisure Stadium.
The 44th annual KDKA-TV Turkey Fund will help our neighbors in need have a nice meal for Thanksgiving.
West Virginia scored a late touchdown to tie the game and then beat Pitt in overtime to win the 108th Backyard Brawl.
