Hey Ray: The Rising Chain Experiment
In physics, sometimes, the reaction you get is not the reaction you expected. Meteorologist Ray Petelin explains with a cool experiment.
Hey Ray: Cross-Quarter Days and Groundhog Day
Ray Petelin is here to tell you all about "cross-quarter days" and Groundhog Day!
First Alert Weather: Winter Weather Advisory issued for parts of Western Pa. ahead of Wednesday storm
It's going to be a sleep-in-and-you'll-miss-it event with three-to-five inches of snow in some parts of our area.
Pittsburgh Weather: Winter storm system to bring snow and rain Wednesday
A winter storm system is set to impact the region by daybreak Wednesday.
Hey Ray: Frost wedging
Potholes make your commute this time of year a brought one, but what causes them?
Hey Ray: Wind chill and temperature
You may wonder why we meteorologists don't just use wind chill - here's why!
Hey Ray: The science behind Santa's worldwide trip
For years, Ray has been trying to figure out how Santa does it and now he thinks he's cracked the case!
Pittsburgh Weather: A partly cloudy Tuesday with hints of sunshine
Finally, the sunshine is back today and tomorrow! Enjoy it while it lasts.
Pittsburgh Weather: First Alert Weather day issued for Thursday as mild Tuesday gives way to big changes
These mild conditions will soon give way to some wet weather and possible icy conditions.
Hey Ray: Meteoroids, meteors, and meteorites
What is the difference between a meteoroid, a meteor, and a meteorite, and why do they burn up in the atmosphere?
WATCH: Meteor lights up the night sky
The American Meteor Society received over 200 reports of this large meteor.
Hey Ray: How 'Graupel' forms
This time of year we hear the word "Graupel" so how does form and what is it?
Pittsburgh Weather: Thanksgiving looks dry and seasonal
The high pressure that has been bringing us beautiful sunshine this week will slip off the East Coast on Thanksgiving Day.
Hey Ray: 'Pop' Science
Did you know that there's a bunch of science packed into "pop?"
Pittsburgh Weather: Winter weather advisory issued for Somerset, Garrett counties
A winter weather advisory is in effect from 1 p.m. Tuesday until 5 a.m. Wednesday for Garrett and Somerset counties.