Don't believe the hype: 'Weather Bomb' not likely headed for Inland Northwest

There's a story circulating the internet that a "Weather Bomb" is set to drop on the Inland Northwest this weekend.

We asked our weather team what that means and what we are in for on Sunday.

Briana Bermensolo, KREM 2's morning weather anchor spent Thursday morning reviewing forecast data for Sunday. She also had a discussion with Chief Meteorologist Tom Sherry and the local National Weather Service Office.

"Explosive Cyclogensis" is a process that usually happens in the winter, and happens extremely fast. 

The weather event is more common on the East Coast....and is usually associated with several feet of snow. 

Explosive Cyclogenesis, or a bomb, happens with a combination of rapidly dropping atmospheric pressure, the presence of very cold air, and lots of moisture. 

Here are some of Tom and Briana's thoughts on why a bomb (bringing high winds and heavy snow) does not look likely this weekend: 

1) Not all the computer models are in agreement for this Sunday. It is too early to know for sure exactly how Sunday's weather will play out.

2) We know we are going to see much colder temperatures. But, still not a true arctic freeze. Cold, but not near zero degrees. 

3) We do not have any indications about the snow potential. Right now, the forecast doesn't look like heavy, heavy snow that would merit using the term "bomb."

4) Expect cold, strong winds Sunday. At this time, they do not appear to be damaging winds. 

Last year's November Windstorm is a good example of the last "bomb" to hit the Inland Northwest.  The extremely damaging and fatal winds gusted over the 70 mph threshold. 

You will also remember winter 2008 - 2009. On Dec. 17, 2008 Spokane got more than a foot of snow in one day.  Dec. 18 saw 11 inches in one day. That is almost two feet of snow in two days! 

That event was definitely a “bomb.” 

KREM 2's Weather Team will continue to track the forecast and update you on all the latest developments as things come together for this weekend.  In the meantime, expect light snow Friday afternoon and Saturday morning. 

Also, prepare for cold temperatures next week in the teens and 20s! 

 

(© 2016 KREM)


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