***Watch WISN 12 News for the latest on this record breaking storm!***
Thank you for stopping by the Weather Watch 12 Blog! The massive storm that moved into the Midwest on Tuesday, shattered records here in Wisconsin and across the Nation. The intense Fall storm will continue to impact the area today with more high winds. In this blog we will look at peak wind gusts across southeast Wisconsin, the records that were toppled, and also what made this storm so strong.
Let’s start with the peak wind gusts so far across southeast Wisconsin. Outside of the Kenosha gust which occurred in a thunderstorm, the rest were a result of the pressure gradient.
- Kenosha 68 mph
- Sheboygan 68
- Milwaukee 61
- Elkhorn 59
- Jackson 58
- West Bend 55
- Fort Atkinson 55
- Elm Grove 55
- Racine 54
- Greenfield 54
A couple of days ago here in the blog we were discussing how this storm would ‘bomb out’. In order for a storm to ‘bomb’ it must see a pressure drop of 24mb in just 24 hours time. That occurred with this monster Fall storm. Below is a graph showing the pressure drop in Bigfork, MN. This shows the pressure of around 982mb at 6pm Monday dropping to 955mb shortly before 6pm Tuesday!
As the storm ‘bombed out’ over Minnesota the low pressure readings shattered records in Minnesota, Wisconsin, and for the entire nation! Here is a look at some of the pressure records that were set with this storm.
- Pressure reading of 29.38″ or 961mb in Superior, Wisconsin. New WI state record!
- Pressure reading of 28.14″ or 953mb in Orr, MN. New MN state record. Also the lowest pressure reading ever in the continental United States!
- ***Both pressure readings comparable to a category 3 hurricane!***
The pressure reading in Orr, MN may be corrected upward a bit, but if anyone had a home barometer they may have been wondering if it was broken.
The surface map on Tuesday at 1 p.m. shows the storm at nearly its peak intensity. The low was centered near the Arrowhead of Minnesota with a surface low of 960mb. The black lines are isobars, lines that connect equal pressure. The closer the lines are packed together the tighter the pressure gradient, and the result is lots of wind!
A storm like this does not come along often, and neither do the perfect ingredients that led to the storm. A howling jet stream with a core of winds around 200kts was racing across the Midwest, creating a huge amount of lift in the atmosphere. Also, a large temperature gradient existed in the days leading up to the storm.
The storm will continue today as High Wind Warnings are still in place for southeast Wisconsin. Winds will hover in the neighborhood of 20-40 mph, with gusts around 50 mph. Use extra caution driving, and while working outdoors today. Breezy conditions will persist through Thursday as colder air sinks into the region.
Often the worst of mother nature can provide some beautiful scenes. The large waves crashing into the breakwater in Port Washington was captured in this photo from the U-Local section of WISN.com If you have pictures or video to share, please post them to the U-Local section of WISN.com The picture below was also shown on one of our WISN 12 newscasts!
This storm has been amazing, and if you have questions, thoughts or stories to share from this record breaker, post them to the comments section of the blog.
Have a great day!