1947 Glazier–Higgins–Woodward Tornado Outbreak
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From April 9–11, 1947, a significant
tornado outbreak A tornado outbreak is the occurrence of multiple tornadoes spawned by the same Synoptic scale meteorology, synoptic scale weather system. The number of tornadoes required to qualify as an outbreak typically are at least six to ten, with at least ...
produced catastrophic effects over portions of the southern
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, in the
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. The outbreak generated at least 12, and possibly 17 or more,
tornado A tornado is a violently rotating column of air that is in contact with the surface of Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind or cyclone, although the ...
es, many of which were significant. On Wednesday, April 9, a series of related tornadoes spawned by a single
supercell A supercell is a thunderstorm characterized by the presence of a mesocyclone, a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms (su ...
, dubbed the Glazier–Higgins–Woodward tornadoes, swept through the
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s of
Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...
,
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, and
Kansas Kansas ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders Nebraska to the north; Missouri to the east; Oklahoma to the south; and Colorado to the west. Kansas is named a ...
. Most of the damage and nearly all of the deaths are still blamed on one large tornado, known as the Glazier–Higgins–Woodward tornado, that traveled from Texas to Oklahoma, beginning over the South Plains. This event, up to nearly in width, was often compared to the
Tri-State tornado In the midday and afternoon hours of Wednesday, March 18, 1925, the deadliest tornado in United States history and second-deadliest worldwide moved through Eastern Missouri, Southern Illinois and Southern Indiana, killing 695 people and inj ...
, because it was originally thought to have left a path, was similarly large and intense for much of its path, and was also retroactively rated F5 on the modern-day Fujita scale, but it is now believed to have been part of a
family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
of nine or 10 tornadoes.


Background

Early on April 9, the
United States Weather Bureau The National Weather Service (NWS) is an Government agency, agency of the Federal government of the United States, United States federal government that is tasked with providing weather forecasts, warnings of hazardous weather, and other weathe ...
in Amarillo, Texas, forecast late-afternoon temperatures of about over the Texas panhandle. At the time, dense, low-lying stratus and a layer of
fog Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. Reprint from Fog can be considered a type of low-lying cloud usually resembling stratus and is heavily influenc ...
were present, with temperatures ranging from the upper 40s to low 50s °F. However, an approaching
warm front Warm, WARM, or Warmth may refer to: * A somewhat high temperature; heat * Kindness Music Albums * ''Warm'' (Herb Alpert album), 1969 * ''Warm'' (Jeff Tweedy album), 2018 * ''Warm'' (Johnny Mathis album), 1958, and the title song * ''Warm'' ( ...
—then extended from
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, to
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—would later combine with a robust
trough Trough may refer to: In science * Trough (geology), a long depression less steep than a trench * Trough (meteorology), an elongated region of low atmospheric pressure * Trough (physics), the lowest point on a wave * Trough level (medicine), the l ...
aloft to enhance conditions for
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. In tandem with this, a
low-pressure area In meteorology, a low-pressure area (LPA), low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. It is the opposite of a high-pressure area. Low-pressure areas are commonly associated with incle ...
over northeastern
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, along with an attendant
dry line A dry line (also called a dew point line, or Marfa front, after Marfa, Texas) is a line across a continent that separates moist air and dry air. One of the most prominent examples of such a separation occurs in central North America, especially ...
, would gradually eject, leading to stronger low-level
wind shear Wind shear (; also written windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical ...
and more pronounced
lapse rate The lapse rate is the rate at which an atmospheric variable, normally temperature in Earth's atmosphere, falls with altitude. ''Lapse rate'' arises from the word ''lapse'' (in its "becoming less" sense, not its "interruption" sense). In dry air, ...
s. Around 2:00 p.m. CST (18:00 
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), helicity was near 135 m2/s2, but would decline afterward. As it did so, however, an unexpected decrease in cloud cover allowed for greater-than-expected diurnal heating, leading to a substantial rise in
atmospheric instability Atmospheric instability is a condition where the Earth's atmosphere is considered to be unstable and as a result local weather is highly variable through distance and time. Atmospheric instability encourages vertical motion, which is directly cor ...
and associated
buoyancy Buoyancy (), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid). In a column of fluid, pressure increases with depth as a result of the weight of t ...
. By 6:30 p.m. CST (00:30 UTC), the low-pressure center was situated over southern Colorado, and a
jet stream Jet streams are fast flowing, narrow thermal wind, air currents in the Earth's Atmosphere of Earth, atmosphere. The main jet streams are located near the altitude of the tropopause and are westerly winds, flowing west to east around the gl ...
existed above sea level. Surface-based temperatures quickly reached the upper 60s °F. In the
mixed layer The oceanic or limnological mixed layer is a layer in which active turbulence has homogenized some range of depths. The surface mixed layer is a layer where this turbulence is generated by winds, surface heat fluxes, or processes such as evaporat ...
, the convective available potential energy (CAPE) rose above 1,100 j/kg, and the
lifted condensation level The lifting condensation level or lifted condensation level (LCL) is the height at which the relative humidity (RH) of an air parcel will reach 100% with respect to liquid water when it is cooled by dry adiabatic lifting. The RH of air increases ...
(LCL) was just above ground level, along with a
level of free convection The level of free convection (LFC) is the altitude in the atmosphere where an air parcel lifted adiabatically until saturation becomes warmer than the environment at the same level, so that positive buoyancy can initiate self-sustained convection. ...
(LFC) of . Mixed-layer convective inhibition by then had decreased, offsetting the loss of helicity, and the presence of the warm front acted in concert with the aforementioned factors to favor
supercell A supercell is a thunderstorm characterized by the presence of a mesocyclone, a deep, persistently rotating updraft. Due to this, these storms are sometimes referred to as rotating thunderstorms. Of the four classifications of thunderstorms (su ...
s capable of generating strong tornadoes. Gusts of attended the passage of a
cold front A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface Trough (meteorology), trough of Low-pressure area, low pressure. It often forms behind an extratropica ...
overnight.


Confirmed tornadoes

*A possible tornado may have flattened a barn just south of Carpenter, Oklahoma, on April 9. Prior to 1990, there is a likely undercount of tornadoes, particularly E/F0–1, with reports of weaker tornadoes becoming more common as population increased. A sharp increase in the annual average E/F0–1 count by approximately 200 tornadoes was noted upon the implementation of
NEXRAD NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band pulse-Doppler radar, Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) ...
Doppler weather radar A weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pu ...
in 1990–1991. 1974 marked the first year where significant tornado (E/F2+) counts became homogenous with contemporary values, attributed to the consistent implementation of
Fujita scale The Fujita scale (F-Scale; ), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determ ...
assessments. Numerous discrepancies on the details of tornadoes in this outbreak exist between sources. The total count of tornadoes and ratings differs from various agencies accordingly. The list below documents information from the most contemporary official sources alongside assessments from tornado historian Thomas P. Grazulis.


Glazier–Higgins, Texas/Woodward, Oklahoma

Moving at an average of , this extremely large and violent tornado was first confirmed near Canadian, Texas. When it struck the tiny town of Glazier, it may have been as much as wide. Most structures in town were swept completely away and scattered. Vehicles in the area were thrown hundreds of yards and mangled, shrubbery was debarked, and ground scouring occurred. Glazier was considered completely destroyed, with 17 dead, a major percentage of the populace. Press reports told of two people who were known to be together in Glazier before the tornado struck were found apart afterward. The tornado maintained its intensity as it slammed into Higgins, on the Texas–Oklahoma border, which was also devastated. The accepted death toll here was 51; again, a major fraction of the residents of the town were killed or injured. Much of downtown Higgins was completely demolished, and entire rows of homes were swept away. At one residence, a
lathe A lathe () is a machine tool that rotates a workpiece about an axis of rotation to perform various operations such as cutting, sanding, knurling, drilling, deformation, facing, threading and turning, with tools that are applied to the w ...
was reportedly ripped from its anchors and broken in half. After killing at least one other person, the tornado crossed the state line and entered Oklahoma. There the tornado was at its worst—the deadliest storm in that state's tornado-troubled history. Six more people were killed when the tornado swept away about 60 ranches and farms south of Shattuck, Gage, and Fargo. During its trek, the
funnel A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its constructi ...
was so wide and low to the ground that it did not resemble a prototypical tornado. The tornado then moved into Woodward, where it devastated the town and killed an estimated 107 people. The damage that occurred in Woodward was catastrophic. There, the tornado was wide and destroyed 100 city blocks. Many homes and businesses were leveled or swept away, and as the tornado struck the town's power plant, a steel boiler tank was lofted and thrown a block and a half. Large trees sustained severe debarking as well. The tornado finally dissipated in Woods County, west of Alva, where it wrecked 36 homes and injured 30 people. Cleanup in the region was made more difficult because of cold and snow that followed the tornado. Four-year-old Joan Gay Croft and her sister Jerri were among refugees taking shelter in a basement hallway of the Woodward hospital. As officials sent the injured to different hospitals in the area, two men took Joan away, saying they were taking her to Oklahoma City. She was never seen again. Over the years, several women have come forth saying they suspect they might be Joan, although none of the claims have been verified. She is likely deceased. The Glazier–Higgins–Woodward tornado was the sixth deadliest in U.S. history, killing 184 and injuring 980; of these figures, 116 deaths and 782 injuries occurred in Oklahoma. An undetermined number of additional fatalities may have occurred in both states affected. In all, the tornado destroyed 626 homes and damaged 920 others, becoming the costliest on record in Oklahoma history.Multiple sources: * * * * ** ** ** * *Mike Coppock
Sixty years after Woodward tornado, girl's kidnapping unsolved.
''Oklahoma Gazette'', April 3, 2007. * * * * *
Woman may be girl stolen after tornado.
''Rome News-Tribune'', April 15, 1994.


Aftermath and recovery

A US Weather Bureau report on the Woodward, Oklahoma Tornado of April 9, 1947, gives the following figures on the damage caused in its "Original Summary" section. *Lipscomb County, Texas – 36 homes flattened, 1 damaged *Hemphill County, Texas – 83 homes leveled, 116 damaged *Texas total – $1,505,000 *Ellis County, Oklahoma – $1,264,000 **52 homes destroyed, 133 damaged **223 other buildings destroyed, 107 damaged *Woodward County, Oklahoma – $6,608,750 **430 homes destroyed, 650 damaged **925 other buildings destroyed, 975 damaged *Woods County, Oklahoma – $950,000 **25 homes destroyed, 34 damaged **110 other buildings destroyed, 90 damaged *Kansas total – $200,000 Total damage estimates were $173,489,564 (equivalent to $747,850,050 in 2008 dollars).


See also

* Tornadoes of 1947


Notes


References


Sources

* * * * * * ** ** ** ** *


External links and sources

* (http://docs.lib.noaa.gov/rescue/mwr/075/mwr-075-04-0070.pdf) {{DEFAULTSORT:1947 Glazier-Higgins-Woodward Tornadoes April 1947 in the United States F5, EF5 and IF5 tornadoes 1940s missing person cases Glazier-higgins-woodward Tornadoes, 1947 1947 in Texas 1947 in Oklahoma Barber County, Kansas Kingman County, Kansas 20th-century tornadoes 1947 meteorology 1947 natural disasters in the United States Tornadoes in Kansas Tornadoes in Oklahoma Tornadoes in Texas