What is a Thundersnow?

1/8/2021 (Permalink)

Thundersnows are rare and can produce deadly lightning and extreme cold weather

Thundersnow refers to a snowstorm that produces thunder and lightning.  Depending on the conditions, the precipitation might be freezing rain or hail instead of snow.  To get thundersnow, you need a mass of cold air on top of warm air, plus moist air closer to the ground.  The air layer closer to the ground needs to be warmer than the layers above, but still cold enough to create snow.  During this event, heavy snowfall is to be expected.  Some areas have reported two inches of snow per hour. 

The thunder and lightning are different during a Thundersnow than in a thunderstorm.  Snow muffles sound, so thundersnow thunder sounds subdued and does not travel as far.  Lightning flashes are enhanced by reflective snow.  Thundersnow lightning appears white or golden and have a positive charge.  This lightning is more destructive than usual negative polarity lightning and can cause a fire or damage to power lines.  The conditions that lead to a Thundersnow can also lead to dangerous cold temperatures and poor visibility.  Tropical force wind is possible as with a blizzard.  While these events are rare, the following locations have more favorable conditions to produce such a storm:

• Great plains
• Mountains
• Coastlines

Although our area is not likely to see a Thundersnow, we can still experience the effects of snow and freezing rain.  Winter weather can be as unpredictable as summer storms.  Freezing rain can cause power lines to fall as well as trees and road hazards.  The one predictable thing during weather events is your local SERVPRO of the Quad Cities.  We are prepared and servicing our area under all weather conditions.  Locally operated and available for your service needs 24/7.  If you have experienced storm damage call today for your inspection and estimate on restoration needs.  We work with our customers to ensure complete customer satisfaction.