Climate change causes severe weather? 2014 tornado count about half of normal

Despite claims of “severe weather is increasing”, and even after several days of tornado activity in the Midwest and the South, 2014 is still below normal compared to recent years according to data published by Greg Carbin of the NOAA Storm Prediction Center.

2014_tornado_season

Here is the data from SPC:

TORNADO TOTALS AND RELATED DEATHS...THROUGH TUE APR 29 2014
NWS STORM PREDICTION CENTER NORMAN OK
0506 PM CDT WED APR 30 2014

       ...NUMBER OF TORNADOES...  NUMBER OF          KILLER
                                  TORNADO DEATHS     TORNADOES
    ..2014.. 2013 2012 2011 3YR                 3YR             3YR
    PREL ACT  ACT  ACT  ACT  AV   14  13  12 11  AV  14 13 12 11 AV
---  --   -- ---  ---- ---- ----  --  -- --- -- ---  -- -- -- -- --
JAN   4    4   75   79  16   57    0   1   2  0   1   0  1  2  0  1
FEB  41   --   39   57  63   53    0   1  15  1   6   0  1  7  1  3
MAR  25   --   18  154  75   82    0   0  43  1  15   0  0 10  1  4
APR 173   --   86  206 758  350   31   1  6 363 123   8  1  1 43 15
MAY  --   --  268  121 326  238   --  41  0 178  73  --  5  0  9  5
JUN  --   --  125  111 160  132   --   1   4  3   3  --  1  2  1  1
JUL  --   --   72   37 103   71   --   0   0  0   0  --  0  0  0  0
AUG  --   --   46   38  57   47   --   0   0  2   1  --  0  0  2  1
SEP  --   --   21   39  51   37   --   0   0  0   0  --  0  0  0  0
OCT  --   --   61   37  23   40   --   0   0  0   0  --  0  0  0  0
NOV  --   --   79    7  44   43   --   8   0  5   4  --  3  0  2  2
DEC  --   --   18   53  15   29   --   2   0  0   1  --  2  0  0  1
---  --   --  ---  ---- ---- ---- --  -- --- -- ---  -- -- -- -- --
SUM 243    4  908 939 1691 1179   31  55  70 553 227  8 14 22 59 33

PREL = 2014 PRELIMINARY COUNT FROM ALL NWS LOCAL STORM REPORTS.
ACT  = ACTUAL TORNADO COUNT BASED ON NWS STORM DATA SUBMISSIONS.

COMPARISONS BETWEEN PRELIMINARY AND ACTUAL COUNTS SHOULD BE AVOIDED.

..CARBIN..04/30/2014

Source: http://www.spc.noaa.gov/climo/online/monthly/newm.html

What is most interesting is that the recent tornado outbreak that stretched from Arkansas to Georgia marked the end to a streak of 159 days without a tornado ranking an EF3 or higher on the Enhanced Fujita scale (which goes from 0 to 5).As we reported earlier on WUWT, we were in a tornado drought: Tornado season so far may be the slowest in a century

Greg Carbin, the man in charge at NOAA’s Storm Prediction Center (SPC) provided this graph and says:

Likely the slowest start to tornado activity in any year in modern record, and possibly nearly a century!

Carbin_tornado_season_slow

It got busy very fast though. There were only 20 tornadoes up to April 20th, then 93 tornadoes in storm reports up to April 24th, but then SPC recorded 87 tornadoes in storm reports alone on Monday April 28th, many with fatalities (preliminary data, and may be subject to revision once investigations are made on storm events).

2014_tornadoes_to_date

I find it interesting to note that he past three seasons have all been well below the 2011 tornado season, which had the second highest tornado count on record and was much ballyhooed by climate alarmists as the defining link between severe weather and climate. 2012, 2013, and 2014 so far seems to be an inconvenient anomaly for those claims.

2011-2014_tornado_season_plots

Another claim was that the flooding in Pensacola, FL, which got over 29″ of rain, setting a new record, was related to climate change.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1100 AM CDT FRI MAY 2 2014

...RECORD APRIL RAINFALL...

PENSACOLA...

PENSACOLA RECORDED 29.53 INCHES OF RAIN IN APRIL WHICH WAS 25.21 
INCHES ABOVE NORMAL...MAKING IT THE WETTEST APRIL AND WETTEST MONTH 
EVER RECORDED.

PREVIOUS APRIL RECORDS

24.46...2005
17.03...1937
15.52...1964
13.90...1918

WETTEST MONTHS

29.53...APRIL 2014
24.46...APRIL 2005
21.43...AUGUST 1935
21.14...JUNE 1994

NOTE: PRECIP AMOUNTS FOR 04/29 AND 04/30 WERE ESTIMATED FROM NEARBY 
WSR-88D DUAL POL RADAR DATA DUE TO A POWER FAILURE ON THE AUTOMATED 
OBSERVING SYSTEM AT PNS ON THE EVENING OF 04/29.

Scott Sistek reports:

At one point Tuesday, Pensacola received 3.39 inches of rain — in 27 minutes! They were up to 3.95 inches in 34 minutes, 5.68 inches in 1 hour and 15.55″ in 24 hours! Actually, the 15.55 is an estimate as their automated rain gauge failed amidst the deluge. A separate weather station nearby recorded 17.7 inches, while other estimates in the area were as high as 22 inches.

With rainfall rates like that, street flooding is no surprise.

Eric Holthaus, who some may remember as “get a vasectomy to save the planet” guy said on Slate:

‘It probably wouldn’t be correct to say that climate change caused Pensacola’s floods, but it surely made them more likely. Climate change is playing a role in extreme rainfall events like the one on Tuesday’

I loved Dr. Ryan Maue’s reply:

But, look at this table, and note when the events occurred – well before our current spate of worry about “climate change”.

Embedded image permalink
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35 thoughts on “Climate change causes severe weather? 2014 tornado count about half of normal

  1. thank you Ryan for using “global warming”…

    So a temperature increase you can’t even see on a thermometer is supposed to cause all this…….

  2. We must be approaching the time when alarmists will routinely claim that ‘climate change’ is causing more meteorite strikes.

  3. What’s that? A little red dot in Phoenix Arizona? OMG its worse that we thought!

    I had to look it up and sure enough a small tornado was reported in March. The NWS gave the tornado a preliminary rating of EF-0, meaning it had winds of 65 to 85 mph.

    The weather service said the tornado was about 10 to 20 feet wide and touched down in a nearby park before skipping through the apartment complex.

    “Several residents reported seeing the tornado and a flying hot tub.” Yes, really. Fortunately no one was in it at the time.

    We do get microbursts here occasionally during our “Monsoon” season, but tornadoes are quite rare.

  4. One thing to keep in mind, some of these old rain rate records are likely erroneous. For example, I’m rather skeptical of the 1-min rain rate record. If you go back to the original report in Monthly Weather Review (http://docs.lib.noaa.gov/rescue/mwr/087/mwr-087-08-0303.pdf), you can read that this amount fell “in an estimated period of 1 minute”. Still, extreme rainfall is probably only ever-so-slightly more likely now than in the planet’s barely colder past.

  5. The table shows a place in Pennsylvania called Smethport with a summer 1942 storm. I made it there for a wedding about 1963. Neat little town with lots of Whitetail Deer in the surroundings fields. Global warming wasn’t an issue in 1942 or 1963 so we didn’t talk about it. Here is a link to a few comments, but not much info on the issue:

    http://www.storm2k.org/phpbb2/viewtopic.php?f=6&t=99797

  6. You should not have said this could be the mildest tornado season in a long time. Mother Nature does not like to be challenged. Kinda like washing your car during a dry spell.

  7. I find it so funny that we are now reduced to arguing about the weather. I only state this because when there was clear global warming Warmists did not want to talk about the weather. Now, even daily heavy snowfalls, cold, rain, a hot day, locust swarm, high tides, 1 month drought etc. are sure signs of global warming climate change. This can go on forever!!!

  8. I wonder why the Alarmists thought that they would do better with “extreme weather” than with “global warming?” Anyone? Maybe they thought any change of subject would be helpful to them.

  9. How do we arrive at 48% with those two numbers? Looks almost dead-on to 50%, like 49.9. A reason?

  10. “2014 tornado count about half of normal”

    Yet again WUWT adopting adopting the warmist’s concept of “normal” weather which WUWT has been decrying for years.

    So why is 2005-2013 , a rediculously short period, considered to be “normal”. Why is this the cherry-picked “average” the new period of reference for 62 years of data ?

    This recent peroid itself has been very low activity, it is hardly the norm against which everything can be measured.

  11. Theo: I wonder why the Alarmists thought that they would do better with “extreme weather” than with “global warming?” Anyone?

    Because it’s a non falsifiable claim (they learnt that lesson with global warming), and there’s always some extreme somewhere on the planet that they can latch onto to spin the myth.

    The fact that a non falsifiable claim has no scientific value ( anti-science as they would say ) does not worry them because the crowd of idiots they are preaching to do not understand science.

    When there are no more extreme weather events anywhere on the planet we can start worrying about a fundamental change in climate. They want to regards that as “normal”.

  12. Anthony, Please could we stop using the political term ‘climate change’. They mean global warming so let’s use it.

  13. When some time soon, when skeptic science predominates and people look at the evidence and not the “consensus science” view of eco-politicised academics, I suspect this reduction in Tornado activity may be cited as the first real sign of the effect of rising CO2.

    And it will be noteworthy that the first people to highlight it were the skeptics.

  14. 2014 tornado counts are so low that it broke the previous record for the first F3 tornado (Mar 31) by a whopping 26 days. Even more remarkable is that these low nominal counts are *before* you adjust for increased population and better tracking technology.

  15. Severe weather.
    if the MSM kept pumping stories like this – “How much more cold can the world take”- April/May
    Wouldn’t take long for everyone to be alarmed by a coming little iceage.
    “This year is maybe a record-breaking year,” says expert on Great Lakes ice.
    As of May 1st, ships were still being escorted with ice breakers on Lake Superior, says the Duluth News Tribune.
    Unexpected snowfall destroys 2,000 hectares of crops in Adjara
    Snowfall warnings for Banff and southward
    Snowfall to hit Petrozavodsk
    Antarctic Sea Ice 50% Above Previous Record
    Gangtok, India – Army rescues 2,000 stranded by snowfall
    Blizzard paralyzes daily life in many parts of Russia’s Urals region
    Heavy Snowfall in the Alps
    Snow and Wind Hit Los Alamos, NM
    Up to 14 inches of snow for Colorado
    Romania – “It’s as if we were preparing for Christmas – not Easter”
    China – Xinjiang hit hard by blizzard
    8 to 11 inches of snow forecast for Minnesota
    Rhinelander – Hasn’t snowed this much in 106 years
    Record low temperatures across Manitoba – 17 Apr
    Record Mid-April Hard Freezes Kill Great Plains Wheat
    Back-to-back record lows in Marquette
    Winnipeg water pipes could stay frozen until July
    Heavy snowfall blocks roads in Afghanistan

    There is more but got bored.

  16. Why would you want to buy a house in somewhere called “Tornado Alley” anyway.

  17. richard says: “if the MSM kept pumping stories like this

    They may once have been the “mainstream” media, but now the “mainstream” is the internet and social media.

    Indeed, with advertisers leaving them in droves, with online news content taking over and with high quality skeptic science sites like WattsUpWithThat now taking over in areas like Climate, one can hardly describe these press-release sausage machine, “10 stories a day per ‘journalist’ and little or no fact checking as “mainstream” – I now call them the “Dinosaur News Media” because many are heading toward extinction.

  18. Assume we accept the premise that “climate change” causes “severe weather”. It is logical, then, to conclude that no “severe weather” implies no “climate change”. The only other alternative is that “climate change” does not cause “severe weather”. QED

  19. @Scottish Sceptic says:
    May 3, 2014 at 5:19 am

    ‘journalist’
    ——————————–
    A sad and contrived term, the only use for which is to distinguish its subject from “reporter”, whom we imagine as actually pursuing facts.

  20. I think localized areas near Charlottesville, VA on the Blue Ridge got an estimated 30″ rain over ~8 hrs from the remnants of Hurricane Camille in August 1969. No “official” raingauge, but estimated by the VA weather service from numerous open barrels and buckets in the area. Whole mountainsides, forest & all, slid down into valleys.

    • @beng – Nelson county. Which is merely a valley between 2 mountains to begin with. 128 deaths in a county with a total population of about 5000.

  21. Huh. Just finished reading that corn yields are affected by hot and dry weather while noting that corn yields are up. Now I find that tornadoes are increased by global warming and tornadoes are down. I’m starting to approach 99% confidence that their predictions are 100% crap.

  22. Joshua says:
    May 3, 2014 at 4:14 am

    2014 tornado counts are so low that it broke the previous record for the first F3 tornado (Mar 31) by a whopping 26 days. Even more remarkable is that these low nominal counts are *before* you adjust for increased population and better tracking technology.
    ===

    Much play is made of the under-counting earlier in the record in an attempt to dismiss the whole record as unreliable.

    After all if the data shows vastly more tornadoes in the 70s at the coolest part and much less in the 2000s when it was considerably warmer, well the data MUST be wrong. It must need some “bias adjustment” or better still it should be thrown out all together.

    Not much adjusting to do if stick to EF2 and greater.

    http://climategrog.wordpress.com/?attachment_id=218

  23. World political leaders say that “Climate Change is real, it is happening now.” Since climate is defined as normal, or typical weather (usually over a 30 year period), what are the changes in the climate we can observe?

    Average Temperature
    In the past, there have been periods where on balance temperatures have risen, and periods of cooling. The present climate situation is a global temperature plateau following a period of warming. It is uncertain how long the flat trend will continue, and whether it will end with warming or cooling.

    It has been at least this warm in the Medieval period, certainly warmer in the preceding Roman and Minoan periods, and those temperatures were a boon for human civilization.

    Extreme Temperatures

    The average temperature since 1900 has been increasing. However, that average increase was due to warmer shorter winters with no increase in summer temperatures. In fact, the hotter summer temperatures have dropped. The average mean yearly temperature is highly correlated to the number of days a year is above 30C (hot days), the number of days in a year the temperature is below –20C (very cold days) and the length of winter in days. All three of these are decreasing, meaning more moderated yearly climate today as compared to the period before 1950.

    What is actually, physically happening is a narrowing of the variability in temperatures with no net change in summer temperatures, except that there are fewer hotter days. This narrowing in variability is primarily due to warmer shorter winters. If this trend continues, the future of the planet is not one of warmer, harsher climate, but less variability in yearly temperatures below a summer normal that is not increasing, more tolerable winters, longer growing seasons, and lower heating bills.

    Average Precipitation

    Water vapor cycles through the atmosphere each 9 days. If water evaporates from a surface somewhere, on average it will rain out somewhere else 9 days later. Observations of monthly rainfall variability from 1940 to 2009 show a zero temporal trend in global mean precipitation, but a reduction in global land variation, meaning that wet places became drier and dry places became wetter
    Rainfall patterns are such that presently 33% of the land is considered desert, defined as places where evaporation exceeds precipitation. Satellite images show that desert areas are turning greener in recent years.
    The last time the Earth was 1.0 degree warmer, the Sahara had trees and lakes. The last time it was 2.0C warmer, 10 million years ago, there was so much rainfall, that the entire planet was forested with virtually no desert or grassland

    Extreme Weather Events

    During the recent warm decades extreme weather has not increased by any statistical measure. On shorter time scales (60-year cycles), the warm phases of AMO cycles correlate with extreme storms, but ocean circulation is not driven by air temperature or CO2. On longer time frames, Eg. comparing the Medieval warm period with the Little Ice age, it is clear that cooler periods have more extreme weather, not less.

    The long-term intense hurricane drought means that a mere “regression to the mean” will see more hurricane landfalls and considerably higher damage in the years to come. A return to the “old normal” of, for example the 1950s-, would mean both hurricane damage and storms would increase dramatically in the years to come.

    The most careful empirical studies show that, so far at least, there has been no perceptible increase, globally, in either the number or the severity of extreme weather events. These studies also show that, thanks to scientific and material progress, there has been a massive reduction, worldwide, in deaths from extreme weather events.

  24. jim south london says:
    “Why would you want to buy a house in somewhere called “Tornado Alley” anyway.”

    It’s beautiful in so many places, check it out. Couple of examples… Come by Tennessee and The Grand ‘ol Opera House or the country & western shows Branson, Missouri and visit. You might not ever want to leave.
    Some of us were born here, have families. Some of us are just plain stupid. Or both, me…

  25. And on deck is the next polar low coming ashore in the west. The dry line is already forming across Utah, Wyoming, Idaho, and the Dakotas… By mid week it should be over the central plains..

    And many of those western states will have snow above 6 thousand feet… Winter is trying like heck to hold on for one last blast..

  26. Greg says:
    May 3, 2014 at 11:49 am

    Much play is made of the under-counting earlier in the record in an attempt to dismiss the whole record as unreliable.

    After all if the data shows vastly more tornadoes in the 70s at the coolest part and much less in the 2000s when it was considerably warmer, well the data MUST be wrong. It must need some “bias adjustment” or better still it should be thrown out all together.

    Not much adjusting to do if stick to EF2 and greater.
    ==================
    Indeed. I prefer to stick to EF3+ for an even smaller chance that we have missed things at that size. By my unofficial analysis of NOAA data 2008 and 2011 are the only years from this century that are even in the top 25 years for the record books…. Last week’s outbreak took 2014 from record low pace all the way up to about “49th out of 65″ pace

    http://www.climatenerd.com/tornado-stats.php?scale=3&mva=10&yrb=1950&yre=2013&mnb=1&mne=12

  27. I’m with the folks earlier in the thread – please don’t jinx it by saying that it looks like it will be a quiet year. And count me as one who wonders if we’re just getting a later than average start with a later than average finish. I hope not, but we all know that Murphy was a meteorologist. :)

  28. This information, cited by Greg Carbon is flat wrong. Just in the last days of April 2014, the 26th, 27th, and 28th, there were over 200 tornadoes, and Mort than 30 related tornado deaths. The overall total tornado count is above average for annual April tornado statistics in 2014, and the tornado death rate for April 2014 is significantly higher than most other April’s on record with one exception, April of 2011. This is entirely inaccurate reporting of weather statistics!

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