All Weather News


5 Mar 2021, 6:05 am

At WeatherNation, we’re committed to educating and informing our viewers of all of the threats severe weather can bring. Each day we’ll highlight different aspects of severe thunderstorms and what you need to know to stay safe.

On March 1, the National Weather Service initiates their campaign to prepare us for all of the hazards the Spring season can bring. This year’s focus is finding your “Safe Place.”



We are kicking things off by telling you everything you need to know about tornadoes and tornado safety.

John Van Pelt details different ways to stay safe when a Tornado Watch or Warning is issued.


Tornadoes are rated by the Enhanced Fujita Scale. Meteorologist Devon Lucie explains how the National Weather Service determines these ratings.


Meteorologist Joe Astolfi highlights the safest places to be during a tornado warning.


Landspouts may be small, but they can pack a big punch. Meteorologist Steve Glazier explains.


Waterspouts are usually weak and quick, but can still be a major threat to coastal areas. Learn more about what they are and how to stay safe.


There is a common misconception that tornadoes don’t hit urban areas. The last few years have proved otherwise.




Three things qualify a thunderstorm as severe. Yesterday, we talked about tornadoes. Today, we will focus on damaging winds and large hail.

2020 saw devastating derechos across the country. Let’s take a look back at what they are and the destruction they caused.


How is hail measured? We break it down for you and show what everyday objects correspond with a certain hail size.


When we talk about a severe threat of damaging, straight line winds, here’s what you need you know with Meteorologist Meredith Garofalo.


Hail can be the costliest part of thunderstorm damage. Meteorologist Ben Reppert breaks it down by the numbers.


Meteorologist Karissa Klos explains what it takes for hail stones to form and grow within a thunderstorm.


Derechos can cause widespread damage across hundreds of square miles. Find out more about this damaging phenomenon.


What causes wind? It’s a simple question, with a scientific answer. Let’s break down how and why the wind blows.




Whether general or severe, thunderstorms can pose a threat to life and property. We are highlighting all facets of this powerful spring phenomenon.

Thunderstorms can manifest in several different ways. Let’s take a look at a few of the most common types.


John Van Pelt walks us through the basics of lightning safety while debunking some common lightning myths along the way.


When severe weather threatens, it’s important to understand the different alerts. Meteorologist Steve Glazier breaks down the difference between a WATCH and a WARNING.


When severe weather strikes, it’s important to be prepared. John Van Pelt helps get you ready.


Think lightning won’t strike the same place twice? Think again! Meteorologist Rob Bradley sets the record straight on misconceptions about lightning.




In addition to hail, wind and tornadoes, flooding often accompanies spring thunderstorms.

Get your home and family ready now, before flooding strikes!


River flooding, areal flooding, and flash flooding: different types of one of the deadliest natural disasters in the United States. Meteorologist Meredith Garofalo explains the difference between the three.


Flooding isn’t just about rising water. Meteorologist Steve Glazier tells us about the various dangers that flood waters can bring.


Flooding is the second biggest weather related killer in the U.S. John Van Pelt highlights ways to stay safe during heavy rain and flooding events.


Do you know why rain rates play an important role in forecasting flash flooding? Meteorologist Meredith Garofalo explains.




We are giving you some insight on how we forecast for severe weather.

La Niña was a major player in the record breaking hurricane season. Now, it looks like spring of 2021 could see a severe weather boost from the ENSO forecast.


Learn more about a common severe weather set-up: the dryline.


The Storm Prediction Center issued various threat levels in advance of severe weather around the country. Learn more about each threat level and what it means when your area is placed in the risk.


Meteorologist Steve Glazier explains where and when severe storms are most likely during spring.


Shear, lift, instability and moisture. SLIM is a helpful acronym to remember what storms need to develop. Meteorologist Karissa Klos breaks down the details.


Dew point and relative humidity are closely related but have different implications in forecasting severe weather and your daily life.



Nocturnal severe thunderstorms present a unique, and elevated danger. Meteorologist Meredith Garofalo explains.


There are many things you can do to help your family get ready for severe weather season. Meteorologist Patrick Crawford walks us through a helpful checklist for Severe Weather Awareness Week.


In severe weather situations, having multiple ways to get watch and warning information can mean the difference between life and death.


In this week’s special edition of “Building a Weather-Ready Nation,” John Van Pelt talks with Doug Hilderbrand about what it means to be a “Force of Nature.”

About the author
Karissa is the Director of On-Air Operations at WeatherNation. Karissa grew up loving math and science, but really fell in love with Meteorology while attending the College of DuPage in Glen Ellyn, Illinois. After two summers of storm chasing in the central plains, she knew that it was the career path for her. Standing in front of a thunderstorm and feeling the cool outflow knock her over was an e... Load Morexperience she will never forget. After two years at COD, she transferred to Metropolitan State University of Denver. Karissa graduated Magna Cum Laude with a Bachelors of Science in Meteorology. Her high school and college speech and meteorology professors were extremely supportive and pushed her to succeed. Before joining the WeatherNation team, she previously worked as the Morning Meteorologist at KCAU-TV in Sioux City, Iowa and at WMBD-TV in Peoria, IL. She recently was part of a National Edward R. Murrow award winning team for breaking news for their coverage of the EF-4 tornado in Washington, Illinois. In her free time, Karissa enjoys cooking and trying new foods. She is a self proclaimed 'TV Junkie' who can get into just about any show. She is a die hard Chicago sports fan who loves attending professional sporting events.