Tule fog ( / ˈ t uː l iː / ) is a thick ground fog that settles in the San Joaquin Valley and Sacramento Valley areas of California 's Central Valley . Tule fog forms from late fall through early spring (California's winter season) after the first significant rainfall. The official time frame for tule fog to form is from November 1 to March 31. This phenomenon is named after the tule grass wetlands ( tulares ) of the Central Valley. As of 2005, tule fog was the leading cause of weather-related accidents in California.
32-422: East Union High School ( EUHS ) is a secondary school located in northwestern Manteca, California . The school first opened in 1966 with a population of 514 students, 26 staff members and four counselors. As of 2005, East Union High School enrolls over 1,600 students annually. This California school-related article is a stub . You can help Misplaced Pages by expanding it . Manteca, California Manteca
64-634: A distance of over 650 kilometres (400 mi). Tule fog occasionally drifts as far west as the San Francisco Bay Area via the Carquinez Strait , and can even drift westward out through the Golden Gate , opposite to the usual course of the coastal fog . Tule fog is characteristically confined mainly to the Central Valley due to the mountain ranges surrounding it. Because of the density of
96-409: A few feet, visibility can go from 10 feet (3.0 m) to near zero. The variability in visibility is the cause of many chain-reaction pile-ups on roads and freeways. In one such accident on Interstate 5 near Elk Grove south of Sacramento , 25 cars and nine big-rig trucks collided inside a fog bank on December 12, 1997. Five people died and 28 were injured. It took 26 hours to clear away all
128-483: A political party. In presidential elections, Manteca has historically been a Republican stronghold. However, it has shifted toward the Democratic Party in recent years. In 2008 , Barack Obama became the first Democrat to carry Manteca in a presidential election since Bill Clinton in 1992 . Manteca has continued to vote Democratic at the presidential level since 2008. In 2020 , Joe Biden won Manteca by 7.49%,
160-603: A population of 67,096. The population density was 3,778.5 inhabitants per square mile (1,458.9/km ). The racial makeup of Manteca was 49.6% White , 9.8% African American , 1.1% Native American , 12.1% Asian ,0.6% Pacific Islander , 11.4% from other races , and 7.2% from two or more races. Hispanic or Latino of any race were 43.7%. The Census reported that 66,601 people (99.3% of the population) lived in households, 150 (0.2%) lived in non-institutionalized group quarters, and 345 (0.5%) were institutionalized. There were 21,618 households, of which 9,681 (44.8%) had children under
192-404: Is a radiation fog , which condenses when there is a high relative humidity (typically after a heavy rain), calm winds, and rapid cooling during the night. The nights are longer in the winter months, which allows an extended period of ground cooling, and thereby a pronounced temperature inversion at a low altitude. In California, tule fog can extend from Bakersfield to Red Bluff , covering
224-574: Is a city in San Joaquin County, California . The city had a population of 83,498 as of the 2020 Census . It is part of the Stockton-Lodi, CA Metropolitan Statistical Area . Manteca is a city in the Central Valley of California, located 76 miles (122 kilometers) east of San Francisco and 18 miles (29 kilometers) northwest of Modesto . The Manteca area was first inhabited by Yokuts . Manteca
256-508: Is an extreme form of radiation fog that most often forms after sunset due to rapid surface radiative cooling. Low DPD is consistent with more frequent periods of fog. Precipitation has somewhat of a correlation to an increase in fog; however, it is not directly correlated due to some precipitation totals being inversely correlated to some fog years. Wind speed has a small but statistically important impact on fog frequency: lower wind speeds are correlated with higher fog frequency. Winter causes
288-721: Is the hub of public transit in the city. Local bus service is provided by Manteca Transit . A commuter rail service is provided by the Altamont Corridor Express (ACE) at the Lathrop/Manteca station . ACE operates in peak travel directions with trips to San Jose in the morning and to Stockton in the evening. The San Joaquin Regional Rail Commission (SJRRC) has been preparing the ACE Lathrop-Ceres Extension Project. This project would extend
320-491: The Köppen Climate Classification system, Manteca has a hot-summer mediterranean climate, abbreviated "Csa" on climate maps. It is very hot and dry in summer, and mild in winter, except during spells of seasonal tule fog , when it can be quite chilly for many days. Summers are exceptionally dry, whereas winters are rainy with stretches of fair weather. The 2010 United States Census reported that Manteca had
352-682: The United States House of Representatives , Manteca is in California's 9th congressional district , represented by Democrat Josh Harder . In the California State Legislature , Manteca is in the 5th Senate District , represented by Democrat Jerry McNerney , and California's 9th State Assembly district , represented by Republican Heath Flora . California is represented by US Senators Alex Padilla and Laphonza Butler , both Democrats. Manteca Transit Center
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#1733084913344384-521: The foothills of the Sierra Nevada to the east or the Coast Ranges to the west. Above the cold, foggy layer, the air is typically mild, dry and clear. Once tule fog has formed, turbulent air is necessary to break through the temperature inversion layer. Daytime heating (cloud-penetrating visible light wavelengths transformed to infrared by the ground) sometimes evaporates the fog in patches, although
416-604: The City Council voted to switch to district elections for council members, and in the November 2022 general election , district elections were held for council members for the first time. The city hall is located at 1001 West Center Street, Manteca, CA 95337. The current elected council In the San Joaquin County Board of Supervisors , Manteca is in the 3rd district, which is represented by Republican Tom Patti . In
448-717: The Greek island of Crete), and their youngest child, son George, on the family farm in Manteca for the Farm Security Administration. The farm, near the industrial park area, is still owned by the Dimotakis family. The images can be found in the Library of Congress . Manteca fashions itself the "Family City", and it lies at a crossroads of major highways and railroads. As recently as the 1970s, Manteca existed primarily on agriculture and
480-605: The West Coast. The event is held annually on the Sunday before Memorial Day. The event draws over 20,000 attendees. According to the United States Census Bureau , the city has a total area of 17.8 square miles (46 km ), 99.87% of it land and 0.13% of it water. Neighboring towns include Lathrop , Ripon , Escalon , and Tracy . Manteca is located in between the larger cities of Modesto and Stockton . According to
512-439: The accident. There were two fatalities and 39 injuries in the crash. Tule fog events are often accompanied by drizzle. Sunlight often cannot sufficiently penetrate the fog layer, keeping temperatures below freezing. Episodes of freezing drizzle occasionally accompany tule fog events during winter. Such events can leave an invisible glaze of black ice on roadways, making travel especially treacherous. Besides water droplets,
544-440: The age of 18 living in them, 11,973 (55.4%) were opposite-sex married couples living together, 3,009 (13.9%) had a female householder with no husband present, 1,590 (7.4%) had a male householder with no wife present. There were 1,629 (7.5%) unmarried opposite-sex partnerships and 130 (0.6%) same-sex married couples or partnerships . 3,902 households (18.0%) were made up of individuals, and 1,542 (7.1%) had someone living alone who
576-414: The air remains chilly and hazy below the inversion and fog reforms soon after sunset. Tule fog usually remains longer in the southern and eastern parts of the Central Valley, because winter storms with strong winds and turbulent air affect the northern Central Valley more often. Visibility in tule fog is usually less than an eighth of a mile (about 600 ft or 200 m). Visibility can vary rapidly; in only
608-499: The cold air in the winter, winds are not able to dislodge the fog and the high pressure of the warmer air above the mountaintops presses down on the cold air trapped in the valley, resulting in a dense, immobile fog that can last for days or at times for weeks undisturbed. Tule fog often contains light drizzle or freezing drizzle where temperatures are sufficiently cold. Tule fog is a low cloud, usually below 2,000 feet (600 m) in altitude and can be seen from above by driving up into
640-505: The community of French Camp, and the Weston Ranch community in Stockton. There are no middle schools; elementary school continues through the 8th grade, with a mix of both year-round and traditional schools. Manteca Unified School District has 19 elementary schools, 5 high schools, and 2 continuation schools. Not all of the schools listed below are in Manteca itself. Tule fog Tule fog
672-558: The composition of tule fog in the San Joaquin and Sacramento valleys includes ammonia, nitrate and sulfate concentrations. Furthermore, ammonia is the most commonly found single ion and usually is measured to be more than half of the measured ions in the fog. Depending on the region within the California Central Valley, the composition of tule fog can vary in element or ion concentrations. As of 2014, it has been discovered that
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#1733084913344704-428: The construction of its third high school (Sierra High School), joining Manteca High School and East Union High School. The population of Manteca continues to increase, with some housing being constructed on what was once farmland to the north and southeast. Manteca has more than tripled in population since 1980. Manteca is the home base for the "Not Forgotten Memorial Day Event", the largest commemoration for veterans on
736-597: The current route through Manteca at the new Manteca Transit Center . This project has recently completed the Environmental Impact Report (EIR) and has begun the final design stage. Construction planned to begin in Fall 2024 with service planned to begin in 2025. Public schools in Manteca are part of the Manteca Unified School District . The school district encompasses the towns of Manteca, Lathrop,
768-481: The largest victory margin for a Democrat in the city since 1976 . The City of Manteca is a general law city and as such is governed by a council–manager form of government. The city council is made up of the Mayor and four council members. The Mayor is elected at large every four years in non-presidential elections in even-numbered years, while previously two council members were elected at-large every two years. In 2021
800-406: The name of the community, choosing "Monteca" as the new name. This was misprinted as "Manteca" ( Spanish for lard ) by the railroad, and the misspelled version was eventually accepted as the name of the town. In 1918, Manteca was incorporated as a city, and Joshua Cowell became its first mayor. In 1935, photojournalist Dorothea Lange took photos of William & Mary Dimotakis (immigrants from
832-531: The population) lived in owner-occupied housing units and 25,376 people (37.8%) lived in rental housing units. According to the city's 2022 Annual Comprehensive Financial Report, the top employers in the city are: According to the California Secretary of State , as of October 3, 2023, Manteca has 45,203 registered voters. Of those, 19,035 (42.1%) are registered Democrats , 13,451 (29.8%) are registered Republicans , and 9,027 (20.0%) have declined to state
864-520: The quantity of tule fog has decreased in the Central Valley from when it was initially studied from 1981 to 1999 compared to 2001–2012. The frequency of tule fog occurrence is proportional to the higher air pollution in California. Minimum temperature, DPD (the difference between ambient temperature and dew point), precipitation, and wind speed are the four major components that affect fog formation. Minimum temperature affects tule fog formation because it
896-410: The wreckage and reopen the freeway. In February 2002, two people were killed in an 80-plus-car pile-up on State Route 99 between Kingsburg and Selma . On the morning of November 3, 2007, heavy tule fog caused a massive pile-up that included 108 passenger vehicles and 18 big-rig trucks on northbound State Route 99 between Fowler and Fresno . Visibility was about 200 feet (60 m) at the time of
928-420: Was 33.6 years. For every 100 females, there were 96.8 males. For every 100 females age 18 and over, there were 93.6 males. There were 23,132 housing units at an average density of 1,302.7 units per square mile (503.0 units/km ), of which 13,521 (62.5%) were owner-occupied, and 8,097 (37.5%) were occupied by renters. The homeowner vacancy rate was 2.7%; the rental vacancy rate was 6.5%. 41,225 people (61.4% of
960-407: Was 65 years of age or older. The average household size was 3.08. There were 16,572 families (76.7% of all households); the average family size was 3.48. 19,432 people (29.0% of the population) were under the age of 18, 6,569 people (9.8%) aged 18 to 24, 18,075 people (26.9%) aged 25 to 44, 16,367 people (24.4%) aged 45 to 64, and 6,653 people (9.9%) who were 65 years of age or older. The median age
992-506: Was formally established in 1861 by Joshua Cowell. Cowell claimed around 1,000 acres (400 hectares) and built houses on what is now the corner of Main and Yosemite, where Bank of America now stands. In 1873, the Central Pacific Railroad laid track directly through the area. The residents wanted to refer to their new train station as "Cowell Station", but there was already a Cowell Station near Tracy . The residents agreed to change
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1024-462: Was still barely a stop between two freeways, Interstate 5 and State Route 99 . The continuing rise in Bay Area housing prices caused Bay Area families to look further eastward for more affordable places to live. Since the construction of the 120 bypass portion of State Route 120 , Manteca has become a popular choice for these commuters. The 1990s saw an increase in the city's population and
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