26-577: Poplar Grove may refer to places in the United States and elsewhere: Settlements [ edit ] Poplar Grove, Illinois Poplar Grove Township, Boone County, Illinois Poplar Grove, Howard County, Indiana Poplar Grove, Indianapolis , a neighborhood of Indianapolis Poplar Grove Township, Roseau County, Minnesota Poplar Grove, Salt Lake City , Utah Other places [ edit ] Poplar Grove (Lexington, Kentucky) , listed on
52-767: A battle of the Second Boer War Poplar (disambiguation) Poplar Forest , a historic home once owned by Thomas Jefferson, in Forest, Virginia, U.S. Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Poplar Grove . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Poplar_Grove&oldid=1257915263 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description
78-541: A maximum DoD value, which is given by total destruction. Lesser damage to a structure will yield lower DoD values. The links in the right column of the following table describe the degrees of damage for the damage indicators listed in each row. The new scale takes into account the quality of construction and standardizes different kinds of structures. The wind speeds on the original scale were deemed by meteorologists and engineers as being too high, and engineering studies indicated that slower winds than initially estimated cause
104-715: A modified version known as the CEF-scale. It has also been in use in France since 2008, albeit modified slightly by using damage indicators that take into account French construction standards, native vegetation, and the use of metric units. Similarly, the Japanese implementation of the scale is also modified along similar lines; the Japanese variant is referred to locally in Japan as the JEF or Japanese Enhanced Fujita Scale. The scale
130-406: A proxy for actual wind speeds. While the wind speeds associated with the damage listed have not undergone empirical analysis (such as detailed physical or any numerical modeling) owing to excessive cost, the wind speeds were obtained through a process of expert elicitation based on various engineering studies since the 1970s as well as from the field experience of meteorologists and engineers. Unlike
156-872: Is also used unofficially in other countries, such as China. The newer scale was publicly unveiled by the National Weather Service at a conference of the American Meteorological Society in Atlanta on February 2, 2006. It was developed from 2000 to 2004 by the Fujita Scale Enhancement Project of the Wind Science and Engineering Research Center at Texas Tech University , which brought together dozens of expert meteorologists and civil engineers in addition to its own resources. The scale
182-564: Is different from Wikidata All article disambiguation pages All disambiguation pages Poplar Grove, Illinois Poplar Grove (founded in 1859) is a village located in Poplar Grove and Belvidere Townships , Boone County, Illinois , United States . It is part of the Rockford Metropolitan Statistical Area , and of the gated community Candlewick Lake. The population was 5,049 at
208-539: Is learned. Some differences do exist between the two scales in the ratings assigned to damage. An EF5 rating on the new scale requires a higher standard of construction in houses than does an F5 rating on the old scale. So, the complete destruction and sweeping away of a typical American frame home, which would likely be rated F5 on the Fujita scale, would be rated EF4 or lower on the Enhanced Fujita scale. Since
234-760: Is no functional difference in how tornadoes are rated. The old ratings and new ratings are smoothly connected with a linear formula. The only differences are adjusted wind speeds, measurements of which were not used in previous ratings, and refined damage descriptions; this is to standardize ratings and to make it easier to rate tornadoes which strike few structures. Twenty-eight Damage Indicators (DI), with descriptions such as "double-wide mobile home " or " strip mall ", are used along with Degrees of Damage (DoD) to determine wind estimates. Different structures, depending on their building materials and ability to survive high winds, have their own DIs and DoDs. Damage descriptors and wind speeds will also be readily updated as new information
260-548: Is water. As of the 2020 census there were 5,049 people, 1,501 households, and 1,310 families residing in the village. The population density was 658.11 inhabitants per square mile (254.10/km ). There were 1,787 housing units at an average density of 232.92 per square mile (89.93/km ). The racial makeup of the village was 80.23% White , 2.16% African American , 0.38% Native American , 0.81% Asian , 0.02% Pacific Islander , 5.88% from other races , and 10.52% from two or more races. Hispanic or Latino of any race were 15.31% of
286-604: The National Severe Storms Laboratory , Storm Prediction Center , CIWRO , and the University of Oklahoma 's School of Meteorology, published a paper stating, ">20% of supercell tornadoes may be capable of producing EF4–EF5 damage". The seven categories for the EF scale are listed below, in order of increasing intensity. Although the wind speeds and photographic damage examples have been updated,
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#1732783042574312-442: The 2020 census. Poplar Grove was named in 1845 for a grove of poplar trees near the original town site. A post office called Poplar Grove has been in operation since 1848. On January 7, 2008, on an unusually warm day which saw temperatures reach the mid 60s °F , a tornado struck northern Illinois, including Poplar Grove and Candlewick Lake. The tornado severely damaged a favorite local attraction, Edward's Apple Orchard. There
338-623: The NRHP in Fayette County, Kentucky Poplar Grove Plantation (Louisiana) Poplar Grove (Scotts Hill, North Carolina) , or Poplar Grove Plantation Poplar Grove National Cemetery , Petersburg, Virginia Poplar Grove Mill and House , Williams, Virginia Poplar Grove, battle location on the Modder River , South Africa , about ten miles upstream of Paardeberg . See also [ edit ] Battle of Poplar Grove (1900),
364-402: The average family size was 3.00. The village's age distribution consisted of 32.4% under the age of 18, 5.7% from 18 to 24, 27.5% from 25 to 44, 26.8% from 45 to 64, and 7.5% who were 65 years of age or older. The median age was 37.1 years. For every 100 females, there were 88.4 males. For every 100 females age 18 and over, there were 90.7 males. The median income for a household in the village
390-550: The cast of the TV show "Storm Chasers" visited Caledonia Elementary School to talk about tornadoes and the effects they have on communities. The students and the "Storm Chasers" were featured on a Rockford's "23 WIFR News" story on the January 2008 tornado. On April 9, 2015 the northern Illinois region was hit with another wave of tornadoes, with four in the surrounding areas of Rockford, Rochelle, and Belvidere. These tornadoes all broke
416-452: The damage descriptions given are based on those from the Fujita scale, which are more or less still accurate. However, for the actual EF scale in practice, damage indicators (the type of structure which has been damaged) are predominantly used in determining the tornado intensity. The EF scale currently has 28 damage indicators (DI), or types of structures and vegetation, each with a varying number of degrees of damage (DoD). Each structure has
442-678: The new system still uses actual tornado damage and similar degrees of damage for each category to estimate the storm's wind speed, the National Weather Service states that the new scale will likely not lead to an increase in the number of tornadoes classified as EF5. Additionally, the upper bound of the wind speed range for EF5 is open—in other words, there is no maximum wind speed designated. For purposes such as tornado climatology studies, Enhanced Fujita scale ratings may be grouped into classes. Classifications are also used by NOAA's Storm Prediction Center to determine whether
468-408: The original Fujita scale and International Fujita scale , ratings on the Enhanced Fujita scale are based solely off the effects of 3-second gusts on any given damage indicator. The Enhanced Fujita scale replaced the decommissioned Fujita scale that was introduced in 1971 by Ted Fujita . Operational use began in the United States on February 1, 2007, followed by Canada on April 1, 2013, who uses
494-410: The population. There were 1,501 households, out of which 58.3% had children under the age of 18 living with them, 81.55% were married couples living together, 3.26% had a female householder with no husband present, and 12.72% were non-families. 11.73% of all households were made up of individuals, and 2.07% had someone living alone who was 65 years of age or older. The average household size was 3.26 and
520-561: The record for the last tornado to touch down in the area and destroyed the Summerfield Zoo in Belvidere, as well as killing some of the animals. The rest were all rescued by 200 volunteers the following day. According to the 2021 census gazetteer files, Poplar Grove has a total area of 7.67 square miles (19.87 km ), of which 7.66 square miles (19.84 km ) (or 99.88%) is land and 0.01 square miles (0.03 km ) (or 0.12%)
546-482: The respective degrees of damage. The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds. None of the tornadoes in the United States recorded before February 1, 2007, will be re-categorized. Essentially, there
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#1732783042574572-532: The severity of the damage they cause. It is used in some countries, including the United States and France. The EF scale is also unofficially used in other countries, including China. The scale has the same basic design as the original Fujita scale—six intensity categories from zero to five, representing increasing degrees of damage. It was revised to reflect better examinations of tornado damage surveys, in order to align wind speeds more closely with associated storm damage. Better standardizing and elucidating what
598-455: Was $ 74,896, and the median income for a family was $ 79,115. Males had a median income of $ 65,208 versus $ 33,750 for females. The per capita income for the village was $ 38,756. About 5.3% of families and 5.5% of the population were below the poverty line , including 10.0% of those under age 18 and 0.0% of those age 65 or over. Enhanced Fujita Scale The Enhanced Fujita scale (abbreviated as EF-Scale ) rates tornado intensity based on
624-474: Was one serious injury reported and the damage was widespread. The tornado was later rated EF3 on the Enhanced Fujita Scale . A weather event this big had not occurred in the area since 1967. The tornado was one of the only eight rated EF3 during the time span of the warm weather, which lasted from January 7 to 10. Although there were no losses, it was still a very severe storm. The following month
650-405: Was previously subjective and ambiguous, it also adds more types of structures and vegetation , expands degrees of damage, and better accounts for variables such as differences in construction quality. An "EF-Unknown" (EFU) category was later added for tornadoes that cannot be rated due to a lack of damage evidence. As with the Fujita scale, the Enhanced Fujita scale remains a damage scale and only
676-620: Was used for the first time in the United States a year after its public announcement when parts of central Florida were struck by multiple tornadoes , the strongest of which were rated at EF3 on the new scale. In November 2022, a research paper was published that revealed a more standardized EF-scale was in the works. This newer scale is expected to combine and create damage indicators, and introduce new methods of estimating windspeeds. Some of these newer methods include mobile doppler radar and forensic engineering. In 2024, Anthony W. Lyza, Matthew D. Flournoy, and A. Addison Alford, researchers with
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