Debris Balls & PDS Tornado Watches – Another Major Tornado Outbreak Later Today Impacting Same Region
Future Radar shows a nearly stationary storm pinwheeling waves of moisture across the Great Lakes into Minnesota, the atmosphere marginally cold enough for wet snow to mix in at times today and tonight. On the 29th day of April. Severe storms rumble across the Deep South, the western third of the nation dry and mild. NAM model data: HAMweather.
Slushy Possibilities. My weather-whining muscles are exhausted. I’m beyond disgusted, entering a realm of reluctant acceptance. Nothing we can do about it – may as well go for weather-boasting-rights now. HAMweather maps (NOAA NAM) show a potential for a couple inches of slushy accumulation over central and southern Minnesota, an arc of 1-3″ amounts possible from near Duluth to St. Cloud, Willmar and Mankato by Wednesday morning.
Severe Holding Pattern. The same stalled storm responsible for persistent rain (and some wet snow) from the Great Lakes into the Midwest and Dakotas will spawn another severe weather outbreak later today – a moderate risk of storms over eastern Mississippi and much of Alabama implies another threat of large, violent tornadoes – in pretty much the same area that was impacted Monday. Source: NOAA SPC.
This Is What It Looks Like On The Ground In Arkansas Right Now. Esquire has an update, and a few Vine animated GIFS, one in particular that shows how critical it can be to have a safe room on your property: “A string of tornados ripped through Arkansas, Iowa, and Oklahoma last night, killing at least 18 people and destroying homes, cars, shopping malls, and anything else in its wake. Here are five vines that capture the devastation on the ground in Vilonia, Arkansas.”
Photo credit: Danny Johnston, Associated Press.
* tornado survivors in Mayflower, Arkansas recount their terrifying ordeal, courtesy ofNBC News.
Debris At 15,000 Feet? Ari Sarsalari tweeted out this Doppler-derived 3-D slice of the atmosphere above Vilonia, Arkansas Sunday evening, apparently showing debris lofted nearly 3 miles into the atmosphere by the massive tornado that pushed north of Little Rock.
Tupelo Velocity Couplet. I snapped this image yesterday (using GR3), a display of SRV, or Storm Relative Velocity, showing 70-90 knots of winds going in either direction around the north side of Tupelo, Mississippi. This is what Doppler radar does, calculating the speed of rain drops and hailstones, either toward or away from the radar site, and deriving areas of spinning “supercell” mesocyclones, the rapidly rotating thunderstorms most likely to spin up tornadoes.
Wedge. Here is a frame-grab from a video of the Tupelo tornado, a massive “wedge tornado” that struck Monday afternoon, leaving behind extensive damage and numerous injuries, but (almost miraculously) no reports of fatalities as of late last night. Today’s edition of Climate Matters includes amazing video of the tornado, along with explanations of “debris balls” and “PDS Tornado Watches”.
Extreme Tornado Swings: What Holds The Key. Up until Sunday the USA was experiencing one of the quietest starts to tornado season in recorded history. That said, after the events of the last 48 hours it would be wildly premature to get too complacent about tornado season. Here’s a clip from Climate Central: “…But while they can chart the tornado numbers, Carbin and his colleague Harold Brooks have “no explanation” for what’s behind this wild swing in tornado activity in just a handful of years. That hasn’t stopped them from looking for one, though, including the possibility that climate change is playing an unrecognized role. “We’ve been scratching our heads for awhile on what is driving this extreme sort of behavior,” Carbin said…”
Image credit above: “An aerial photograph of the damage to Tuscaloosa, Alabama, in the vicinity of the intersection of 15th St. E. and McFarland Blvd. E., wrought by one of the tornadoes that struck the area on April 27, 2011.” Credit: NOAA.
Hurricane Center Improves Hurricane Intensity Predictions. One of the biggest challenges in meteorology is predicting hurricane intensity, days in advance. Historically forecasting hurricane tracks have more skill than intensity. NOAA took more steps in the right direction last year, as SunSentinel reports – here’s a clip: “…Also boosting intensity forecast accuracy, a computer model called the HWRF showed significant improvement after being upgraded halfway through last year’s season. The main upgrade: Its resolution was increased, allowing it to see more detail in the atmosphere and better analyze the structure of storms. “The improvement in the HWRF was a big deal,” Franklin said. “It gives us some hope for when we have a tougher year.” Meanwhile, the center’s forecast track errors last year were considerably larger than those in 2012 in almost every forecast period. Franklin attributed that to so many systems being weak...”
El Nino Risk Increases As Pacific Gets Warmer. Bloomberg has an update on the impending El Nino warm phase. At least for Minnesotans it can’t come fast enough. Here’s a clip: “The odds are increasing that an El Nino weather system will form this year, portending drought for Australia and Asia and a warmer winter in the U.S. Northeast. TheU.S. Climate Prediction Center now says there’s a 65 percent chance the Pacific Ocean warming pattern will develop after August. It put the odds at 52 percent last month. The Australian Bureau of Meteorology, which expected neutral conditions at the start of the year, says the phenomenon may start as soon as July. The World Meteorological Organization of the United Nations sees an El Nino at midyear…”
* NOAA has all the ENSO/El Nino details you need to know here.
A Significant El Nino Brewing? Here’s an excerpt from the Australian Bureau of Meteorology that made me do a double-take: “All international climate models surveyed by the Bureau indicate that SSTs in the equatorial Pacific Ocean are likely to continue to warm into winter. All models indicate that the equatorial Pacific is likely to exceed El Niño thresholds by the southern hemisphere spring, with six of seven models expecting this to occur by July.”
The Explosive Growth of California’s Drought in 1 Chart. Climate Central has the story – here’s the introduction: “It didn’t seem possible, but California’s drought just got worse. On Thursday, the U.S. Drought Monitor released new data that show every single inch of the state is now experiencing some form of drought. Since mid-March, a sliver of California on its southeastern border was the lone drought holdout for the state. Even then, that section of the state was still considered abnormally dry according to the Drought Monitor. The section finally tipped into drought this week, and for the first time in 15 year-history of the Drought Monitor, the entire state is now in drought...” (Image: U.S. Drought Monitor).
10 Breakthrough Technologies: 2014. MIT Technology Review lists some of the innovations and technologies making news and disrupting established industries in 2014; here’s a clip: “Technology news is full of incremental developments, but few of them are true milestones. Here we’re citing 10 that are. These advances from the past year all solve thorny problems or create powerful new ways of using technology. They are breakthroughs that will matter for years to come.”
Yes, It Appears Money Can Buy You Happiness. Buying “stuff”, material items, doesn’t generate the long-lasting happiness that a purchase of something that brings you closer to friends or family can, research suggests. Here’s an excerpt of a Marketplace story that caught my eye: “…Dr. Ryan Howell, associate professor of psychology at San Francisco State University, studies the connection between money and happiness. His research tries to answer, “Can people spend their money to make themselves happier?” And yes, he says, money can buy happiness. “Your discretionary money, if it’s spent on bringing you closer to your friends and family [or] if it’s spent building up psychological needs, it can make you happy,” Howell says. Experiential purchases such as vacations, ball games, and concerts, offer a sense of happiness that, in hindsight, people say they don’t feel when purchasing material goods…”
Up Close On Baseball’s Borders. The New York Times created a fascinating series of interactive maps that any baseball fan will absolutely want to explore. Here’s an excerpt: “…We’ve created two features to help readers explore the data. First is an interactive map of the United States that allows you to explore not just the most popular team in your neighborhood but also a table of the top teams for any ZIP code in the country. Second, in the spirit of Mr. Rushin’s Munson-Nixon line, we’ve generated 14 maps detailing baseball’s biggest rivalries, highlighting the borders and offering suggested names for those lines…”
Here Comes The Self-Cleaning Car? Uh oh, my car wash investments may be in serious trouble, as reported at Gizmag: “Nissan is currently testing out a prototype that it says could make car washes a relic of the past. The test car benefits from a new nano-paint treatment that repels dirt and grime. The automaker is putting the car through the dirty wringer to see how well it holds up in the real world…”
Will Global Warming Produce More Tornadoes? The (scientific) jury is still out; the prevailing wisdom has been that any increase in instability/CAPE would be offset by less wind shear, as northern latitudes warm faster than lower latitudes. But recent research is calling everything into question. Here’s an excerpt of a story from Chris Mooney at Mother Jones: “…That conclusion fell into question late last year, though, with a paper by Diffenbaugh and two colleagues in the Proceedings of the National Academy of Sciences. Using a suite of the most state-of-the-art climate models, the researchers found, once again, that wind shear decreases under global warming. However, they also found that that didn’t really matter, because the number of days with both high CAPE and high shear nonetheless increased. “We find that in fact, at the monthly or seasonal scale, that decrease [in shear] does occur over the US,” Diffenbaugh says, “but it’s concentrated in these days with very low CAPE.” That means that the net number of days with high CAPE and high shear was still projected to increase in the future…”
Photo credit above: “An automobile dealer surveys the tornado damage to one of his trucks in Mayflower, Arkansas, on Sunday.” Danny Johnston/AP Photo.
Climate Change, El Nino, Cold Winters, and California’s Drought. Does climate volatility have a role in the California drought, or the odd and persistent permutations that parked the Polar Vortex over the USA for the better part of 3 months? Here’s a clip from a story at Ars Technica: “…The detours of the jet stream were large, and they were persistent. The northward-bending “ridge” shielded the West Coast from moisture-bearing weather that would normally water the Californian landscape and restock the supply of mountain snow that provides meltwater over the dry summer. Many wondered if climate change could be partly responsible—a question that gets asked about every extreme now. It is, as always, a difficult question to answer, considering the inherent and substantial variability of weather. However, it’s also plainly true that average atmospheric conditions have changed over the past century. The hard part is teasing out the contribution of those changing conditions to specific weather events…”
Graphic credit above: “Vegetation growth for late January 2014. Brown is below average; green is above average. The green areas in the Sierra Nevada mountains would normally be covered in snow at this time of year“. NASA Earth Observatory/Jesse Allen
The Koch Attack On Solar Energy. Yes, by all means let’s tax the sun. Because it’s free and you can’t put a meter on it. Here’s a clip from a recent New York Times Op-Ed: “At long last, the Koch brothers and their conservative allies in state government have found a new tax they can support. Naturally it’s a tax on something the country needs: solar energy panels. For the last few months, the Kochs and other big polluters have been spending heavily to fight incentives for renewable energy, which have been adopted by most states. They particularly dislike state laws that allow homeowners with solar panels to sell power they don’t need back to electric utilities. So they’ve been pushing legislatures to impose a surtax on this increasingly popular practice, hoping to make installing solar panels on houses less attractive...”
Climate Change: How To Talk About Bad News. More data, more evidence doesn’t always convince skeptics, as pointed out in this article at marketplace.org; here’s an excerpt: “…Focus on the benefits,” Webber says. “Scare campaigns work extremely well when there’s a simple thing you can do to remove the danger. But if it takes protracted action, over time, nobody wants to feel bad for that length of time. People just tune out.”The real challenge, however, may be to talk about climate change in ways that don’t push people’s cultural and political buttons. Dan Kahan’s research shows that the way people view climate change is closely tied to their values. People “aggressively filter” information that doesn’t conform to their worldview. “And remarkably the more proficient somebody is at making sense of empirical data,” he says, “the more pronounced this tendency is going to…”
Water In Our Shoes. Here’s an excerpt of an Op-Ed from The Miami Herald, at ground zero when it comes to rising sea level. South Florida is truly on the front lines of a more volatile, rapidly changing climate: “For South Floridians, the topics of climate change and rising sea levels are no longer to be dismissed as tree-hugger mumbo-jumbo. Pause next time you hear that parts of Miami Beach or the intersection of A1A and Las Olas Boulevard have flooded because of … high tides? Let the light go off atop your head: It’s science, stupid. On Tuesday, Florida Democratic U.S. Sen. Bill Nelson brought illumination to Miami Beach — Ground Zero for our unique coastal battle with Mother Nature…” (Image: NASA).
What Does Today Owe Tomorrow? Justin Gillis at The New York Times examines the issue of legacy, our collective responsibilities for future generations. How do economists assess the risk and what should be done to limit impact? Here’s an excerpt: “…Their analyses tend to suggest that, because we have dawdled so long, the economic damage from climate change is going to be substantial, no matter what we do from here. They also generally find that this damage is likely to be dwarfed by bigger economic trends unrelated to climate, like the evolution of technology and shifts in population. Despite those findings, the typical economic analysis suggests that it is still worth trying to limit climate change — in other words, not only can the damage be reduced somewhat, but the future benefits of doing so outweigh the current costs…”
“Green Is Resilience”. An article at emissourian.com caught my eye – climate scientists talking to very conservative audiences in central Missouri. Here’s an excerpt: “…I would suggest my free market colleagues, especially conservatives, who think that climate change is a bunch of hooey, the Chinese do not. They plan on eating our lunch this next century. They plan on innovating around the problem and selling to us and the rest of the world the technology that will lead the 21st century. “We may press the pause button in America trying to figure out what to do, but China is pressing the fast forward button.”
Climate Change Survival: Companies Need Courage…And New Metrics. The smart companies will go on offense and not wait to make their facilities and processes more resilient and storm-proof. Here’s an excerpt from The Guardian: “…Conservative, in this case, essentially means conserving resources to ensure long-term security. In my brother’s case, from the time he became aware of the coming crisis, there was no “business as usual” in anything he did: he took emergency measures to protect his company, his workers and his future. And it worked. Many companies are looking beyond sustainability to survivability in their radical approaches to environmental issues. KPMGcalculated that the environmental degradation caused by the world’s 3,000 largest public companies totaled $2.15tn in 2008. This estimate undoubtedly antagonized many of the company’s biggest clients...” (Image: Shutterstock).
Read more here.
How Climate Change Makes Everest An Even Deadlier Game. Grist has a few details and findings I wasn’t aware of; here’s an excerpt: “…On Everest, it’s as simple as this: Snow and ice are the glue that holds the route up the south col together. When that glue melts, things literally start to fall apart. And while scientists say global temperatures have risen .75 degrees C (1.4 degrees F) in the last century, studies show temperatures in the Himalaya have risen at a rate three times that. The avalanche swept through the part of the route that is most prone to temperature-induced deterioration: the Khumbu Icefall. Even within a season on Everest, the route up the icefall is constantly being rearranged, as summer’s approach widens crevasses and breaks off big columns of ice called seracs…” (Image above: Wikimedia Commons).
“The Year Climate Change Closed Everest“. The Atlantic has the story.
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.