Weather 101: Atmospheric Rivers and the recent California Floods

Weather 101: Atmospheric Rivers and the recent California Floods

Over the weekend, much of California was battered with rain from an atmospheric river event. Here's how much the Golden State was impacted, plus a look behind-the-scenes at the culprit.

Tuesday, November 18th 2025, 3:53 PM EST by Gavin Sandel
Weather 101: A Crash Course on Wintertime Precipitation

Weather 101: A Crash Course on Wintertime Precipitation

Mother Nature brings her entire deck of cards during the winter- from rain to snow, with sleet, freezing rain, and even graupel- in between. Here's how they all form, and their effects on our day-to-day lives.

Monday, November 17th 2025, 3:53 PM EST by Gavin Sandel
Weather 101: It's Snow Squall Awareness Week in Pennsylvania

Weather 101: It's Snow Squall Awareness Week in Pennsylvania

Just like its summertime counterpart, snow squalls can cause major issues on area roads. Here's how they form, and their nasty impacts on our day-to-day lives.

Wednesday, November 12th 2025, 4:48 PM EST by Gavin Sandel
Weather 101: Analog Forecasting

Weather 101: Analog Forecasting

Forecasting winter is tough. It is the most unpredictable season, thanks to a very active jet stream. Here's how we can forecast the future by looking at the past.

Tuesday, November 11th 2025, 4:34 PM EST by Gavin Sandel
Weather 101: Fetch

Weather 101: Fetch

Fetch, or the distance that winds blow over open water, is a crucial tool for lake-effect snow forecasting. Here's more, including how it applies to today's snowfall.

Monday, November 10th 2025, 4:16 PM EST by Gavin Sandel
Weather 101: When does the Valley tend to see its first flakes?

Weather 101: When does the Valley tend to see its first flakes?

Love it or hate it, a four-letter word that starts with "s" will make its way into our area at some point. Here's when, how, and why the Valley gets its coveted first flakes of the season.

Wednesday, November 5th 2025, 4:22 PM EST by Gavin Sandel
Weather 101: The biggest moon of the year rises tonight

Weather 101: The biggest moon of the year rises tonight

The full moon, officially at 8:19am Wednesday, will be the closest one to Earth since February 2019. Here's how this spectacle works.

Tuesday, November 4th 2025, 4:27 PM EST by Gavin Sandel
Weather 101: October's weather versus climatology

Weather 101: October's weather versus climatology

Talk about a flip! While starting hot and dry, October finished cool, wet, and windy. Here's how last month fared against the climatological "norms".

Monday, November 3rd 2025, 4:25 PM EST by Gavin Sandel
Weather 101: Clocks are falling back this Sunday

Weather 101: Clocks are falling back this Sunday

At 2 am on November 2nd, our area will “fall back” to Eastern Standard Time (EST) as Eastern Daylight Time (EDT) ends its annual eight-month run. Here is more about the history and controversy of the change.

Wednesday, October 29th 2025, 4:20 PM EDT by Gavin Sandel
Weather 101: How Melissa became one of the Atlantic's strongest hurricanes on record

Weather 101: How Melissa became one of the Atlantic's strongest hurricanes on record

Hurricane Melissa is still churning in the Atlantic basin, though has already set multiple records while slamming Jamaica. Here are all the ingredients that set up this perfect storm.

Tuesday, October 28th 2025, 4:26 PM EDT by Gavin Sandel
Weather 101: The El Niño Southern Oscillation

Weather 101: The El Niño Southern Oscillation

An oceanic phenomenon off of South America is one of the biggest players to shape winters across the Valley. Here's how ENSO can shape weather across the world.

Monday, October 27th 2025, 4:34 PM EDT by Gavin Sandel
Weather 101: Weather Satellites

Weather 101: Weather Satellites

One way we can strengthen our knowledge of the atmosphere is through the use of weather satellites. These instruments, high in space, can tell us about the weather across the world.

Wednesday, October 15th 2025, 2:42 PM EDT by Gavin Sandel
Weather 101: Fall and wintertime road safety

Weather 101: Fall and wintertime road safety

Now that our area is done with true warmth, drivers have to take some extra caution when navigating the roads. Today, we'll spotlight two concerns: rogue leaves and tricky potholes.

Wednesday, October 15th 2025, 2:40 PM EDT by Gavin Sandel
Weather 101: Numerical Weather Prediction

Weather 101: Numerical Weather Prediction

Before meteorologists get to see any weather, it is predicted through the use of weather models. Here's how they (with the help of supercomputers) are able to predict it.

Wednesday, October 15th 2025, 2:36 PM EDT by Gavin Sandel
Weather 101: Why do leaves change color?

Weather 101: Why do leaves change color?

It's the centerpiece of autumn: fall foliage. We can blame a small pigment named chlorophyll for this stunning sight.

Wednesday, October 15th 2025, 12:15 PM EDT by Gavin Sandel
Weather 101: The morbid side of meteorology

Weather 101: The morbid side of meteorology

While the last few months have been nothing short of calm, Mother Nature can bring some strong, unexpected weather, leading to a tragic loss of life. Here's a look at some deadly weather and how we can avoid it.

Tuesday, October 14th 2025, 4:27 PM EDT by Gavin Sandel
Weather 101: A mid-season look back at the Tropical Atlantic

Weather 101: A mid-season look back at the Tropical Atlantic

This year's tropical season is riding a much milder path off of 2024's destructive coattails. Find out why here.

Monday, October 13th 2025, 4:59 PM EDT by Gavin Sandel
Weather 101: Frost vs. Freeze

Weather 101: Frost vs. Freeze

With the first chance of near-freezing temperatures over the next two nights, here's the difference between two words that have a big impact for your gardens.

Wednesday, October 8th 2025, 4:11 PM EDT by Gavin Sandel
Weather 101: Farmer's almanacs and winter weather prediction

Weather 101: Farmer's almanacs and winter weather prediction

These yearly publications tend to offer a first glimpse on much-anticipated winter weather looming. But how reliable are they?

Tuesday, October 7th 2025, 3:25 PM EDT by Gavin Sandel
Weather 101: Why have we seen the Northern Lights so often?

Weather 101: Why have we seen the Northern Lights so often?

Since the start of last year, folks around the Valley have been incredibly spoiled to see the Northern Lights in the nighttime sky. Here's why they've gotten so common.

Monday, October 6th 2025, 2:47 PM EDT by Gavin Sandel