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You may have wondered where a cold draft is coming from, or wanted to convince a teenager to wear a coat on a cold, winter day. This week, Meteorologist Ray Petelin show us how thermal imaging is a great way to see, and show, where heat is escaping, AND tries to use it to convince a teenager to bundle up!
Have you ever noticed snow sparkling during a very cold night or morning? There are some cool processes in action to make that happen. Meteorologist Ray Petelin shows us how "sparkle snow" forms.
Have you ever heard anyone say "It is too cold for snow"? It is an old notion, but can it REALLY be too cold for snow? Meteorologist Ray Petelin has the answer!
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.
When it's hot, you're always looking for a way to cool off, but did you know you can give your heat to other objects? Ray Petelin explains in a new Hey Ray!
Security cameras can pick up some interesting things, and there is one thing that shows up on cameras that Meteorologist Ray Petelin gets asked about a lot, and today he has the answer.
Summer officially begins on Sunday morning in Pittsburgh, and Ray Petelin is here to break down the "summer stats" for you!
You may know that Ray Petelin considers himself a "Bird Nerd." Today, he is going to show you how to get hummingbirds to come over for a close-up visit!
Coffee is a morning staple for many, and one viewer's coffee comes with a concert built in. Meteorologist Ray Petelin explains why her coffee starts sounding weird!
Sometimes, you look up to the sky, and you see something weird. Other times you look down from up in the sky and you see something extremely weird! That happened to Edna. Pilot's Glory, Glory of the Pilot, or Pilot's Halo — whatever you want to call it, Ray Petelin has an explanation.
A viewer asks, if it's raining outside, but the humidity gauge only reads 74%, shouldn't it be 100%? Ray Petelin has the answer in a new Hey Ray!
The Moon is spherical like Earth, so why do we only see one side of it? Meteorologist Ray Petelin has the answer.
Heavy winds and windstorms have been in the headlines a lot lately, which has plenty of Pittsburghers asking, "Is it windier today than it ever has been in Pittsburgh?" Ray Petelin explains!
Meteorologist Ray Petelin has a weird experiment today where he shows us how to illuminate fluorescent light bulbs without connecting them to a light fixture!
A man who delivered Little Debbie snacks to stores across Washington County is accused of selling them at flea markets for cash and submitting fake invoices.
Some wildfire smoke is rolling into the Pittsburgh area on Sunday, as scattered storm chances return to the forecast.
The Pirates have signed outfielder Derek Curiel, who was selected with the fifth overall pick in the 2026 MLB draft.
Ryan O'Hearn hit a grand slam on his 33rd birthday, as the Pirates held off the Cubs 8-7 to avoid being swept in the three-game series.
Lam Duong, a 19-year-old motorcyclist, was killed in a crash on Sunday morning in Hempfield Township, Westmoreland County.
With one day left, there are still no constitutional sentencing guidelines for the Pennsylvania judicial system when it comes to felony murder.
The lawsuit claims the Trump administration is withholding hundreds of millions of dollars in disaster-preparedness and homeland security grants to pressure states to change policies on elections and immigration.
The House on Thursday voted to direct President Trump to end the war with Iran, after four Republicans joined Democrats to rebuke the president over his handling of the conflict.
Pittsburgh Fire Chief Darryl Jones, who has been on paid administrative leave, will retire after a review of his bureau.
Lawmakers are one step closer to making daylight saving time permanent after the House passed a bill with overwhelming support.
A Westmoreland County family said having a secret room is not as cool as it sounds, after finding a large void under their garage built by Ryan Homes
Last year, Americans received nearly 30 billion scam robocalls and text messages.
The Pennsylvania Turnpike Commission approved a 3.5% toll increase that goes into effect on January 3, 2027.
After about three dozen Allegheny County home deeds were fraudulently put into an LLC's name, experts are sharing tips for protecting yourself.
Giant Eagle has remained the dominant grocer in southwestern Pennsylvania for more than 40 years, and one of those reasons was the exit of Kroger.
Daisy checks out Canonsburg's newest hot spot!
Daisy and David talk about fresh veggies and herbs with a Pittsburgh chef as he prepares a dish live from Tuscany!
Boaz takes us to Phipps Conservatory, where a 50-year-old agave plant has grown right through their ceiling!
The lead singer of Blank Space, the unofficial Taylor Swift tribute band, went head-to-head against PTL producer Maria to see who knows more about the iconic singer.
Daisy Jade joins David Highfield and answers viewer questions in the Friday Free For All!
A small community in Fayette County is pushing for answers after finding what appears to be raw sewage spilling into the woods.
Developers want to fill the former Vincentian Marion Manor facility in Banksville with new townhomes.
A Westmoreland County family said having a secret room is not as cool as it sounds, after finding a large void under their garage built by Ryan Homes
Allegheny County is facing a major financial crisis.
It costs a lot of money to keep houses of worship safe.
People who buy their healthcare coverage in Pennsylvania through the Affordable Care Act are expected to see their premiums skyrocket.
An investigation is underway in Uniontown, Fayette County, after police said a man was found dead in his car with a can of Galaxy Gas on the floor.
A public hearing was held on Friday for input on the pending Independence Health and West Virginia University Health System merger.
Pennsylvania is one of four more states now part of a cyclospora outbreak linked to shredded iceberg lettuce from central Mexico.
Western Pennsylvania remains one of the most heavily impacted regions across the country for tick-borne illnesses.
The Pirates have signed outfielder Derek Curiel, who was selected with the fifth overall pick in the 2026 MLB draft.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
Ryan O'Hearn hit a grand slam on his 33rd birthday, as the Pirates held off the Cubs 8-7 to avoid being swept in the three-game series.
Mark Kulbis is also facing misdemeanor counts of involuntary manslaughter and reckless endangerment in the death of Calvin "CJ" Dickey Jr.
Pete Crow-Armstrong was 4 for 5 with a home run and three RBIs as the Chicago Cubs cruised past the Pittsburgh Pirates 11-0.
A world-renowned Pittsburgh technical school and a major airline have signed an agreement to work hand in hand.
The former glass plant in Charleroi has been listed for sale.
The Colorado-based Voyager Technologies has officially acquired Astrobotic, the aerospace company located on Pittsburgh's North Side.
Giant Eagle has remained the dominant grocer in southwestern Pennsylvania for more than 40 years, and one of those reasons was the exit of Kroger.
A major healthcare merger is now official.
Paramount Skydance on Friday said it would delay the deal until as late as June 2027.
Dave Matthews stopped by a Pittsburgh restaurant before his show at Star Lake on Friday night.
The ruling comes after a coalition of 12 states sued to block the deal, arguing it would harm consumers and the entertainment industry.
New Zealand actor Sam Neill, known for "Jurassic Park" and "The Piano," died Monday at 78, his family says.
The new movie "Young Washington" opened over the Fourth of July weekend, earning more than $20 million at the box office and becoming the nation's top live-action film.
A woman in Dormont is making it her mission to map all of the little free libraries in her community. KDKA's Ricky Sayer reports, On A Positive Note.
Stay on top of the weather in the Pittsburgh area with First Alert Meteorologist Ron Smiley's forecast!
President Trump cracked jokes at reporters and politicians during take two of the White House Correspondents' Dinner on Friday night, after April's event was upended when an armed assailant rushed through a security checkpoint and the U.S. Secret Service opened fire on the gunman.
A man who delivered Little Debbie snacks to stores across Pennsylvania is accused of selling them at flea markets for cash and submitting fake invoices.
Two people were killed in a shooting in Clairton on Saturday evening, authorities said.
Mike Tomlin stepped down as head coach of the Pittsburgh Steelers after 19 seasons with the team.
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.
