Posted on Wednesday, May 3, 2017 at 7:21 PM MST
In January, 2017, a strong storm system dropped over 2 feet of snow across northern Arizona, including Flagstaff, the Grand Canyon, and the Mogollon Rim. Seeing one of the Seven Natural Wonders of the World is gorgeous enough on a normal day, but under a fresh blanket of snow is downright breathtaking. Enjoy the journey.
Posted In: Adventure Series
Posted on Wednesday, March 4, 2015 at 7:24 PM MST /9:24 PM EST/
As many of you know, this has been an absolutely brutal winter here in southern New England. With 10 foot piles of snow all over town for almost 6 weeks now, it's safe to say that cabin fever has set in big time. Here you will find an exercise in puzzle solving and cabin fever that will remind you that, yes, we are all a little crazy.
On Friday, February 20th, I decided to go around and take some pictures of the ice flows that had invaded Cape Cod. Buzzards Bay was freezing over and Great Harbor in Woods Hole had completely frozen over. The last time there was sea ice like this was in 2005, so it's not like this happens every year.
Posted In: Education
Posted on Wednesday, March 12, 2014 at 10:00 AM MST
It takes a unique weather setup to generate thundersleet and thundersnow. It takes an even more unique weather setup to generate thunderstorms with surface temperatures of only 12°F. In order to understand these setups, we need to make sense of the concept of an elevated or high base thunderstorm. These can include any type of thunderstorm, from your wimpy little garden variety thunderstorm to powerful supercells.
In the typical surface-based thunderstorm, warm, moist air is lifted from the surface or ground-level into the updraft of the thunderstorm. The cloud base of surface-based thunderstorms is typically only a few hundred feet above the ground. However, if we pass a powerful cold front through the area, such as we did right before the thundersleet, we create a very stable layer at and just above the ground level. In this case, that stable layer was only about 3500 feet deep, but that's still plenty deep to prevent parcels from being lifted from the surface into the updraft. If we lift a parcel from the bottom of the unstable layer (just above 3500 feet), there is sufficient instability to form thunderstorms. The base of the thunderstorm will be a few hundred feet above the bottom of the unstable layer, which in this case would be around 3700 or 3800 feet above the ground (just under 5000 feet above sea level), hence the term high base thunderstorm (or elevated thunderstorm). This phenomenon can be showed very well in the Norman soundings from March 2nd.
Posted In: Education
Posted on Tuesday, March 4, 2014 at 4:00 PM MST
One of the most spectacular displays of thundersnow and thundersleet I've ever seen occurred just south of the Oklahoma City metro this past Sunday. A pretty unique weather setup presented itself as a winter storm passed over the area, creating favorable conditions for thunderstorms despite surface temperatures around 12°F. A band of convection set up across southern Cleveland, McClain, and Pottawatomie Counties in the morning, training over the same area before beginning to slide north in the early afternoon. Around 1:30 PM, these thunderstorms began to approach the Norman area. You can check it all out in the video.
Posted In: Education
Posted on Saturday, February 8, 2014 at 10:00 AM MST /12:00 PM EST/
I am watching two possible areas for winter weather over the next three to four days. The first is a coastal storm that may bring some gusy winds and light snow to the northeast Sunday, and the other is an upper-level storm system that could bring more snow and ice to the southern plains and lower Mississippi River Valley.
Outlook for New England
Posted In: Forecasts
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