by Climate Central.
By many measures, 2011 was the most extreme weather year for the United States since reliable record-keeping began in the 19th
century—and the costs have been enormous. According to the National
Oceanic and Atmospheric Administration (NOAA), 2011 set a record for the most billion-dollar disasters in a single year. There were 12, breaking the old record of nine set in
2009. The aggregate damage from these 12 events totals at least $52
billion, NOAA found.
Severe weather across much of the nation has raised the question of whether global warming has already begun to
influence shorter-term weather patterns, raising the specter of even
more extreme years to come as global temperatures continue to rise.
According to climate studies, the short answer is yes: The new climate environment created by global warming is making some
extreme events, particularly heat waves and heavy rain, more likely to
occur and more intense when they do. Climate models have more difficulty
predicting how climate change may be influencing other types of
extremes, such as severe thunderstorms and tornadoes, but a warming
climate provides more fuel to these events in the form of increased
water vapor and heat in the atmosphere.
Throughout 2011, searing
heat waves, parching drought, deadly tornadoes, blizzards, and floods
cost billions of dollars in damage, affected millions of lives, and
killed more than a thousand people across the United States.
Climate Central examined extreme weather events from coast to coast to determine the 10
states that were clobbered the worst. Texas tops that list, with a
costly—and deadly—combination of intense drought, a punishing heat
wave, the worst wildfires in state history, and plenty of tornadoes.
Rounding out the top 10 were Alabama, Missouri, North Carolina,
Oklahoma, Tennessee, Kansas, Connecticut, Vermont, and New Jersey.
Climate
Central’s analysis factored the death toll in each state, damage costs,
the disruption caused to daily life, and how unusual the events were
compared with what transpires in an average year.
1. Texas
Texas
was hit by eight of the nation’s billion dollar disasters—the most
of any state in the country. Of the eight, the three most devastating
were drought, heat, and wildfires. The drought still grips the state,
and it is the most intense one-year drought on record. Unlike past dry
periods, the damage to the state has been aggravated by record-breaking
heat. Groundwater levels in much of the state have fallen to their
lowest levels in more than 60 years, according to observations from NASA
satellites.
The heat during the summer of 2011 was relentless,
with many cities smashing records for the longest stretch of 100-degree
days, including Dallas with a record 70 straight days with 100-degree
heat, and San Angelo with a whopping 98 days above 100. July 2011 was
the hottest month ever recorded statewide, and Amarillo, Texas, reached
111 degrees F on June 26, an all-time record high for that location where
records date back to 1892.
The combination of drought and unusually hot conditions during this summer helped fuel massive
wildfires, and the 2011 wildfire season was the worst in Texas’ history,
with about 4 million acres burned from November 2010 through November
2011, causing $750 million in damage and killing 10 people, including
four firefighters.
Lake and reservoir levels have fallen so low that they are revealing entire towns flooded decades ago at the bottom of lakes and reservoirs. Ranchers have been forced to sell off large portions of
their herds early, which is likely to raise beef prices by reducing
future beef supplies.
2. Alabama
Alabama was ground
zero for the largest tornado outbreak in American history, when more
than 100 twisters gouged paths across the state in late April, killing
240 people.
Some of the most intense tornadoes flattened heavily populated areas. One twister, shown nationally on
live TV, tore through downtown Tuscaloosa and went on to destroy parts
of Birmingham. Another monster EF-5 twister, with winds stronger than
200 mph, tracked across northern Alabama, killing 78 people, becoming
one of the deadliest single tornadoes in modern American history.
According
to the Storm Prediction Center, Alabama saw the most tornadoes of any
state this year, with 170. The staggering death toll and damage these
storms caused led to a wave of Alabama state pride, with the mantra “We are Alabama” spreading throughout social media networks in the storms’ wake.
3. Missouri
Missouri was the site of America’s worst tornado disaster since 1950, when a massive tornado, nearly a mile wide, wiped large portions of the city of Joplin off the map on May 22. With winds greater than
200 mph, that tornado killed nearly 160 people, making it the seventh
deadliest in U.S. history.
Tornadoes were just one prong of the
deadly onslaught of extreme weather in Missouri, as a combination of
heavy spring rains and upstream snowmelt sent the Missouri and
Mississippi Rivers surging over their banks. According to NOAA, in an
average year, the Missouri River channels 24.8 million acre feet of
water. This year, it carried 24.3 million acre feet in May and June
alone. When the Army Corps of Engineers essentially blew up the levees
to save the small town of Cairo, Ill., floodwaters inundated around
130,000 acres of Missouri farmland.
4. North Carolina
April
2011 was the most active tornado month in U.S. history with 753
tornadoes. North Carolina was among the states worst hit. On April 16,
multiple tornadoes ripped through Raleigh and nearby towns, leaving a
trail of destruction behind them. Thirty-eight people died in a two-day
April tornado outbreak that spread through 10 states; 22 were in North
Carolina.
North Carolina was also one of the first states walloped
by Hurricane Irene in August. With its immense 450-mile span, the storm
battered the North Carolina coast with rain and driving 60-80 mph winds
for nearly 12 hours. Half a million people lost power during
the storm, and the gusting winds generated waves high enough to
demolish piers and damage homes along the coastline. All told, the cost
to North Carolina from tornadoes and Irene is estimated at $3.2 billion.
5. Oklahoma
In
2011, Oklahomans suffered through a brutal combination of severe drought
and intense heat, the likes of which have not been seen since the
infamous Dust Bowl era of the 1930s. The Sooner State had the hottest
summer of any state in U.S. history, narrowly beating neighboring Texas,
and eclipsing a record that dated to 1934. Oklahoma’s average day and
nighttime temperature during July was a scorching 88.9 degrees F, the warmest in any state during any month on record.
For
an idea of how hot it was in Oklahoma last summer, consider this: In
Grandfield, the temperature reached or exceeded 100 degrees on a
record-setting 97 days from mid-April to Sept. 1.
On top of
record heat, last February, the state froze its way through the coldest
temperature on record: -31 degrees F, and the state’s heaviest 24-hour snowfall on record, when 27 inches fell in the town of Spavinaw.
And if that wasn’t enough, Oklahomans also struggled with other weather hazards, including the largest hailstone in state history, some of which measured half a foot in diameter.
6. Tennessee
The
good news for Tennessee this year was that the drought that plagued
states to the southwest—Texas, Oklahoma, and Kansas—didn’t make it
up this far. But for the Volunteer State, a little more drought might
have been a good thing. On April 30, Nashville was drenched with more
than six inches of rain, followed the next day by more than seven inches—
the third heaviest and worst single-day rainfall, and the worst two-day rainfall,
in the city’s history. It was even worse in Camden and Brownsville,
Tenn., with more than 17 inches of rain over the same period. By May
2, it was already the rainiest May on record.
Not surprisingly,
the record rains led to massive flooding on the Cumberland, Harpeth, and
Duck rivers, killing 23 people. The estimated property damage in
Nashville alone topped $1.5 billion.
Deadly as they were, the
floods weren’t the only lethal weather to strike Tennessee during the
spring. Just a week or so before the deluge came, the state was hit with
an EF-5 tornado—the most powerful rating there is—smashing through
Apison, killing 13. It was part of a wider outbreak that killed more than 300 people across the southeast. When you add in
the heat wave that blasted most of the eastern half of the U.S. in July,
the total damage from weather and climate-related disasters added up to
nearly $4 billion.
7. Kansas
The massive heat wave
and drought that devastated Texas and Oklahoma didn’t hit Kansas quite
as hard, but it was bad enough to help push the Jayhawk State into the
top 10 this year. By midsummer, much of the southwestern part of the
state was suffering under “exceptional drought” conditions—it ended
up being the ninth driest year ever recorded—and by year’s end, there
was still no relief in sight. Wichita had more 100-degree-plus days
than any year on record, beating out even the Dust Bowl summer of 1936.
As
of May, the state had seen unusually few tornadoes, but that didn’t
last: powerful thunderstorms, tornadoes, and punishing hail swept the
state in June, July, and August. To top it all off, a 5.6-intensity
earthquake struck on Nov. 5. The quake didn’t cause much damage, but
combined agricultural losses from the heat and drought topped $4
billion.
8. Connecticut
Snowstorms aren’t usually news
in Connecticut—but 2011 was hardly usual. Hartford was buried under
a record-setting 57 inches of snow in January, making it the all-time
snowiest month in state history. Then, nearly two months before the next
winter began, Connecticut was blasted by the worst October snowstorm in
200 years. The heavy wet snow, which cost the state more than $500
million, sent trees and tree limbs falling onto power lines, leaving
more than 700,000 people without heat or lights. In the worst power failure in state history, many didn’t get their electricity back for more than a week.
In August, tropical storm Irene pummeled the state with heavy rains and gale-force winds that caused devastating floods and turned the lights out on more than 650,000 people. Some areas were pounded with as much as eight inches of rain in just 24 hours.
9. Vermont
Just
as most of the Northeast thought they had escaped the worst of Irene’s
wrath, the super-saturated tropical storm ravaged Vermont. The furious
rains battered more than 2,000 roads spanning 500 miles in the state,
paralyzing commerce, stranding people, and demolishing thousands of homes
and businesses. More than 175 roads were completely destroyed and have
only been rebuilt months later in what has been described as a model of
fast-paced recovery from a disaster.
This all came after one of the snowiest winters on record,
which produced record snowmelt. In May, heavy rain and all that melting
snow drove Lake Champlain to its highest level on record, flooding
several nearby towns. Record-setting rains helped set the stage for Irene’s damage by saturating the ground and
putting streams and rivers at unusually high levels when the storm
arrived.
Vermont officials say the total damage costs from Irene will be between $175 and $250 million.
10. New Jersey
Hurricane
Irene roared into New Jersey to become one of the state’s deadliest and
costliest storms, as well as the state’s wettest storm in more than a
century. Tropical downpours sent rivers and streams overflowing, with
nine rivers rising to their highest level ever. The flooding closed 300
roads and highways and interrupted train service for days.
The bill for hurricane damage in New Jersey stands at $1.4 billion already, and at least seven people died during the storm. Then, two weeks later, a second round of drenching
rain—the remains of Tropical Storm Lee—swept across the state,
triggering even more flooding. All told, it was the wettest August and
September New Jersey has seen in 117 years.
Just as the Garden
State began to dry out, a freak autumn snowstorm hit over the Halloween
weekend. The wet, heavy snow stuck to leaves that hadn’t fallen from the
trees. The result: falling branches that blocked roads and downed power
lines, leaving half a million people without electricity, some of them
for a week.
Related Links:
2011 sets all-time record for tornadoes: 199 in one day
Politics blocks scientists from explaining why this year’s weather was record bad
Watch a time-lapse image of 2011’s crazy weather



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