Sentences with phrase «in a tornado outbreak»

To understand the increased frequency in tornado outbreaks, the researchers looked at two factors: convective available potential energy, or CAPE, and storm relative helicity, which is a measure of vertical wind shear.

The study by researchers including Joel E. Cohen, a visiting scholar at the University of Chicago, finds the increase in tornado outbreaks does not appear to be the result of a warming climate as earlier models suggested.

Not exact matches

I REALLY wish CNN would stop posting all of the AL tornado outbreak articles in the belief section.

On our radar: A tornado outbreak in the midwest spawns deadly twisters that have left at least five people, including two children, dead in Oklahoma.

The May 2003 Tornado Outbreak Sequence in the United States was a series of tornado outbreaks that occurred from May 3 to May 11, 2003.

Viewing the thousands of tornadoes that have been reliably recorded in the U.S. over the past half century or so as a population has permitted us to ask new questions and discover new, important changes in outbreaks of these tornadoes.»

The largest U.S. impacts of tornadoes result from tornado outbreaks, sequences of tornadoes that occur in close succession.

«The fact that we don't see the presently understood meteorological signature of global warming in changing outbreak statistics leaves two possibilities: either the recent increases are not due to a warming climate, or a warming climate has implications for tornado activity that we don't understand.

While no significant trends have been found in either the annual number of reliably reported tornadoes or of outbreaks, recent studies indicate increased variability in large normalized economic and insured losses from U.S. thunderstorms, increases in the annual number of days on which many tornadoes occur, and increases in the annual mean and variance of the number of tornadoes per outbreak.

In a new paper, published December 1 in Science via First Release, the researchers looked at increasing trends in the severity of tornado outbreaks where they measured severity by the number of tornadoes per outbreaIn a new paper, published December 1 in Science via First Release, the researchers looked at increasing trends in the severity of tornado outbreaks where they measured severity by the number of tornadoes per outbreain Science via First Release, the researchers looked at increasing trends in the severity of tornado outbreaks where they measured severity by the number of tornadoes per outbreain the severity of tornado outbreaks where they measured severity by the number of tornadoes per outbreak.

Adds Harold Brooks, senior scientist at NOAA's National Severe Storms Laboratory, who was not involved with this project, «The study is important because it addresses one of the hypotheses that has been raised to explain the observed change in number of tornadoes in outbreaks.

Better understanding of how climate affects tornado activity can help to predict tornado activity in the short - term, a month, or even a year in advance, and would be a major aid to insurance and reinsurance companies in assessing the risks posed by outbreaks.

In the current study, the researchers used extreme value analysis and found that the frequency of U.S. outbreaks with many tornadoes is increasing, and is increasing faster for more extreme outbreaks.

Mississippi, Alabama and Tennessee, which were devastated by tornadoes in the spring, will be extremely sensitive to any severe weather outbreaks.

This past April, the series of outbreaks in the Midwest and Southeast generated at least 600 tornadoes — more than any previous month on record.

The April 6 - 8, 2006 Tornado Outbreak was a major tornado outbreak in the Central and parts of the Southern United States that began on April 6, 2006 and continued until April 8 across at least 13 states, with most of the activity on Outbreak was a major tornado outbreak in the Central and parts of the Southern United States that began on April 6, 2006 and continued until April 8 across at least 13 states, with most of the activity on outbreak in the Central and parts of the Southern United States that began on April 6, 2006 and continued until April 8 across at least 13 states, with most of the activity on April 7.

Wencui Han of the Department of Management Science and Systems at the University at Buffalo, New York and colleagues, explain how in the last two decades criminal incidents such as shootings on campus, assaults and robberies, natural disasters including tornadoes, hurricanes and snow storms and disease outbreaks have put students and staff at risk.

March tornado outbreaks killed 40 people in 1994, 64 people in 1984, 58 people in 1966 and 209 people in 1952.

«If you look at the history of significant tornado activity, there are a large number of outbreaks that occur in March and April,» Carbin told OurAmazingPlanet.

However, the total number of tornadoes in those outbreaks jumped dramatically: In 1965, the worst outbreak included about 40 tornadoes, but in 2015 that number had statistically grown to include nearly 80 ground - scouring twisters, the researchers report online today in Sciencin those outbreaks jumped dramatically: In 1965, the worst outbreak included about 40 tornadoes, but in 2015 that number had statistically grown to include nearly 80 ground - scouring twisters, the researchers report online today in SciencIn 1965, the worst outbreak included about 40 tornadoes, but in 2015 that number had statistically grown to include nearly 80 ground - scouring twisters, the researchers report online today in Sciencin 2015 that number had statistically grown to include nearly 80 ground - scouring twisters, the researchers report online today in Sciencin Science.

In April 2011, five days before a powerful storm system tore through six southern states, NOAA's current polar - orbiting satellites provided data that, when fed into models, prompted the NOAA Storm Prediction Center to forecast «a potentially historic tornado outbreak.»

But the 1,691 tornadoes in 2011 — the second most for any season going back to the 1950s — included outbreaks that killed hundreds, something not seen since the 1970s.

Southern Tornado Outbreaks and Western Storms: $ 1.1 Billion When: Jan. 20 to 22, 2017 Deaths: 24 The damage: Southern states were pummeled by 79 confirmed tornadoes in January, sending strong winds as far west as San Diego.

The Iowa Tornado Outbreak of November 2005 was a large and exceptionally rare late autumn season tornado outbreak on the afternoon and evening of November 12, 2005 all throughout the state but concentrated in centrOutbreak of November 2005 was a large and exceptionally rare late autumn season tornado outbreak on the afternoon and evening of November 12, 2005 all throughout the state but concentrated in centroutbreak on the afternoon and evening of November 12, 2005 all throughout the state but concentrated in central Iowa.

Smoke from fires in Mexico and Central America may have worsened one of the largest tornado outbreaks in recent decades, a new study suggests.

The agency said it was adding a June tornado outbreak in the Midwest and Southeast and record - setting wildfires in Texas, Arizona and New Mexico to a list that also includes flooding along the Missouri and Mississippi rivers, drought in the Southern Plains and southwestern United States, five previous tornado outbreaks in Southern and central states, and a blizzard.

Doppler radar helped quantify the initial assessment of the impact of the historic outbreak of 305 tornadoes in the last week of April from Texas to New York that killed more than 325 people in the U.S. Southeast.

«What's pushing this rise in extreme outbreaks, during which the vast majority of tornado - related fatalities occur, is far from obvious in the present state of climate science,» said Cohen, the Abby Rockefeller Mauzé Professor at Rockefeller University and Professor of Earth and Environmental Sciences at Columbia University, who conducted the research while a visiting scholar in UChicago's Department of Statistics.

Tornado outbreaks are large - scale weather events that last one to three days, featuring several thunderstorms and six or more tornadoes in close succession.

The frequency of large - scale tornado outbreaks is increasing in the United States, particularly when it comes to the most extreme events, according to research recently published in Science.

The researchers estimated that the number of tornadoes in the most extreme outbreak in a five - year interval doubled over the last half - century.

«Viewing the data on thousands of tornadoes that have been reliably recorded in the United States over the past half - century as a population has permitted us to ask new questions and discover new, important changes in outbreaks of these tornadoes,» Cohen said.

«Large - scale tornado outbreaks increasing in frequency.»

There were 34 total fatalities, but before the December outbreak was on track to beat the 15 deaths that were reported in 1986 to become the lowest annual tornado - related fatality count in the 1950 - present period of record.

In mid-November an outbreak spawned an estimated 47 tornadoes across the western Great Plains, which was unusual for that late in the year in the regioIn mid-November an outbreak spawned an estimated 47 tornadoes across the western Great Plains, which was unusual for that late in the year in the regioin the year in the regioin the region.

The deadliest tornado outbreaks of the year occurred in late December, with strong tornadoes striking across the South, including across the Dallas, Texas metro area.

In addition to a shift in the peak of tornado season, research has also shown that major outbreaks of tornadoes are becoming more common and that more tornadoes are occurring on those dayIn addition to a shift in the peak of tornado season, research has also shown that major outbreaks of tornadoes are becoming more common and that more tornadoes are occurring on those dayin the peak of tornado season, research has also shown that major outbreaks of tornadoes are becoming more common and that more tornadoes are occurring on those days.

For the third year in a row, tornado season has gotten off to a slow start, as indicated in the graphic below That's a big contrast to the active 2011 season — the second highest on record with 1,691 twisters reported, including a single outbreak that killed 316 people.

In May of 2013, two Central Oklahoma towns were devastated when an outbreak of tornadoes struck the state.

To date, 2012 has seen 11 disasters that have reached the $ 1 billion threshold in losses, to include Sandy, Isaac, and tornado outbreaks experienced in the Great Plains, Texas and Southeast / Ohio Valley.

The trait, he proposed, comes to the surface when such people confront strong messaging on the need for emissions reductions amid enduringly murky science on what's driving some particular extreme environmental phenomenon in the world — whether a brief period of widespread melting on the Greenland ice sheet, a potent drought, a tornado outbreak or the extreme event of the moment, the hybrid nor» easter / hurricane known on Twitter as #Frankenstorm.

You almost assuredly saw at least one story about how the potent storm that triggered deadly tornado outbreaks and flooding across the South and Midwest in recent days carried so much warm air to the North Pole that temperatures over the sea ice, normally well below zero through the dark boreal winter, briefly hitting 33 degrees Fahrenheit today.

I saw barely a mention of these realities in recent posts by climate - oriented bloggers on the tornado outbreak.

The outbreak exhibited three vulnerabilities for tornado casualties revealed by prior research: The tornado hit at night, during a fall or winter month, and in an area with a large proportion of manufactured homes.

They reveal the persistent gaps in understanding of the mix of atmospheric conditions in America's tornado hot zones that can transform a stormy, turbulent day into a catastrophic outbreak of funnel clouds.

The deadly tornado outbreak in the Midwest yesterday makes this final point particularly germane.

The kind of framing used by McKibben in the Daily Beast also came up during the astounding tornado outbreaks earlier this year, as Michael Mann of Pennsylvania State University told ThinkProgress that «climate change is present in every single meteorological event.»

To be sure, increased thermodynamic instability, increased moisture content in the atmosphere (2 factors that Kevin called out), and increased vertical wind shear within 5 kilometers above the ground create an environment more favorable for a tornado outbreak.

[1:27 p.m. Updated A reader, Brad Barrett, pointed out that the word «unknowable» in my headline clashes with the greatly increased skill forecasters have shown in identifying zones ripe for outbreaks of powerful tornadoes, and he's right.

It's an important research question but, to me, has no bearing at all on the situation in the Midwest and South — whether there's a tornado outbreak or drought.