Warming Trend (spring set to finally expand into northern USA this week)
A Springy Blip. A fluke or a trend? Warm weather comes in waves (as does the chill), and we’ll all get to experience a tantalizing glimpse of spring this week as snow rapidly melts in response to a Pacific flow and sun angle as high in the sky as it was in early September. 500mb winds Wednesday morning show a strong zonal flow with temperatures well above average by midweek. Map: Climate Reanalyzer.
Tornado Technology Innovation Born From 1974 Tragedy. It’s hard to believe it’s been 40 years since the “Super Outbreak”, 150 tornadoes in 13 states, but that swarm, a record at the time, set the stage for new technologies and innovations that have dramatically lowered the death toll from these fickle storms. Climate Central has more details; here’s a clip: “…Tornado prediction has also dramatically improved. To illustrate some of those advancements, the Storm Prediction Center used observations of conditions that preceded the 1974 storm and ran computer models on Wednesday to see how well they could forecast the outbreak if it happened today. It turns out the models were able to identify conditions that were conducive for tornadoes to develop in a number of locations where twisters did touch down in 1974…”
Graphic credit above: “A hand-drawn map by Ted Fujita showing the 1974 Super Outbreak of tornadoes in the U.S.” Credit: National Weather Service, Wilmington.
Welcome to the WeatherNation blog. Every day I sift through hundreds of stories, maps, graphics and meteorological web sites, trying to capture some of the most interesting weather nuggets, the stories behind the forecast. I’ll link to stories and share some of the web sites I use. I’m still passionate about the weather, have been ever since Tropical Storm Agnes flooded my home in Lancaster, PA in 1972. I’ve started 5 weather-related companies. “EarthWatch” created the world’s first 3-D weather graphics for TV stations – Steven Spielberg used our software in “Jurassic Park” and “Twister”. My last company, “Digital Cyclone”, personalized weather for cell phones. “My-Cast” was launched in 2001 and is still going strong on iPhone, Android and Blackberry. I sold DCI to Garmin in 2007 so I could focus on my latest venture: WeatherNation. I also write a daily weather column for The Star Tribune startribune.