The definition of a bow echo is relatively straightforward. It is a convective system that resembles the shape of an archer's bow. They produce straight-line wind damage and once in a while will spin up a tornado. Let's take a look at one using RadarScope.Topics: RadarScope | Wind |
The QBO, or Quasi-Biennial Oscillation, is an oscillation in the wind direction in the stratosphere within about 15 degrees of the equator. Over a roughly two-year period, winds tend to oscillate between westward and eastward, with the switch between west and east winds starting high in the stratosphere and then shifting lower in altitude with time. The QBO is the result of waves propagating vertically in the atmosphere that then interact with the mean flow to slowly change wind speeds and direction. These changes influence the overall global circulation patterns, which in turn influence winter weather patterns across North America. The following plot shows the regular cycle in the QBO. Interestingly, the QBO has been positive for the last two winters, a highly unusual event. Since last winter, the QBO has turned sharply negative though, and that negative trend should continue into the upcoming winter.
Tonight, we will have one of the most exciting events in all of sports when the Los Angeles Dodgers and Houston Astros meet in Game 7 of the World Series. This will be the 40th winner-take-all Game 7 in the history of the World Series. It is also the first time the Dodgers have hosted a World Series Game 7 in Los Angeles and only the second time they have participated in one since moving from Brooklyn in 1957. The Houston Astros have never played in a World Series Game 7.Topics: WeatherOps |
Halloween is a favorite holiday for many, and one where a lot of time is spent outdoors. Whether it is dressing up and going to a party or taking the kids trick-or-treating, being mindful of the weather is very important tonight. I will highlight my home state of Oklahoma and touch on areas that will have interesting, unusual, or unsafe weather tonight.Topics: WeatherOps |
Weather can be scary for many, especially when there are severe thunderstorms. Luckily, understanding radar can help people understand better what type of weather is coming their way. This Halloween, let's take a look at some eerie RadarScope images!Topics: RadarScope | Tornado | Hurricane | Thunderstorm |
The Northeast has been battling with a strong coastal storm since Sunday. The area of low pressure is moving northward, out of upstate New York and through southern Quebec causing powerful winds and high waves not only across the Atlantic but also over some of the Great Lakes.Topics: WeatherOps | SkyWise | Wind |
With the pattern turning cold enough at the end of October to produce widespread frosts and freezes, it is an excellent time to look at when the average first freeze occurs across the country. Once frost begins to show up, the first snowfall will soon follow.
On October 21, a tornado developed southwest of Oklahoma City, near Goldsby, causing damage to a casino. Both a NEXRAD radar and a Terminal Doppler Weather Radar (TDWR) in the area detected the storm, but there are some notable differences in the radar images from each.Topics: RadarScope | Tornado | Thunderstorm |