Sierra de San Carlos

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The Sierra de San Carlos is an isolated mountain range in the state of Tamaulipas, Mexico. The climate is semi-arid and the highest point is 5,843 feet (1,781 m).

Geography[edit]

The Sierra de San Carlos (Spanish for Saint Charles Mountain Range), southeast of the city of Linares, Mexico is about 50 miles (80 km) east to west and 20 miles (32 km) north to south. It covers a total area of 896 square miles (2,320 km2). The Sierra is located between 24 and 25 north latitude and 98 30 and 99 10 west longitude. Elevation ranges from 1,000 to 5,843 feet (305 to 1,781 m).[1]

Five types of vegetation cover have been identified in the Sierra. Desert thorn shrub (Tamaulipan matorral) is the most common vegetation in northeastern Mexico and covers the driest areas in the Sierra up to 1,600 feet (300 to 500 m) in elevation. A thorn forest mixed with grassland is found at altitudes of 1,200 to 2,000 feet (370 to 610 metres). A low deciduous forest averaging about 25 feet (7.6 m) in height covers the hillsides at elevations of 1,700 to 3,000 feet (520 to 910 metres). In the cooler temperatures at the higher altitudes in the Sierra oak-pine forests are characteristic at elevations of more than 800 meters (2,600 feet). About 13 percent of the total area is characterized by oak and oak-pine forests. A small amount of riparian forest mixed with tall grasses is found along streams and near reservoirs. The riparian forests feature species such as hickory (Carya palmeri) more characteristic of the United States than Mexico. Most of the forests in the Sierra are intact, as they are not of sufficient quality to encourage commercial timber harvesting.[2]

No major highways or rivers cross the Sierra, nor are there any large towns or cities. The population is rural or resides in small villages.

Climate[edit]

The Sierra de San Carlos has a semi-arid climate with hot summers and mild winters. Precipitation in the Sierra averages about 28 inches (710 mm) annually. Most precipitation is in the summer between May and October, although winters are not as dry as in much of Mexico. The climate of the hamlet of San Nicolás is typical of the higher and cooler elevations in the Sierra.

Climate data for Santa Nicolás, Tamaulipas. Elevation: 2,615 ft (797 m)(1950-2010)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 38.0
(100.4)
39.0
(102.2)
43.0
(109.4)
45.0
(113)
42.0
(107.6)
47.0
(116.6)
42.0
(107.6)
40.0
(104)
39.0
(102.2)
38.0
(100.4)
37.0
(98.6)
38.0
(100.4)
47.0
(116.6)
Average high °C (°F) 19.8
(67.6)
22.3
(72.1)
25.2
(77.4)
29.2
(84.6)
31.2
(88.2)
31.9
(89.4)
32.1
(89.8)
31.9
(89.4)
29.5
(85.1)
26.6
(79.9)
23.8
(74.8)
20.4
(68.7)
27.0
(80.6)
Daily mean °C (°F) 13.8
(56.8)
15.7
(60.3)
19.0
(66.2)
22.1
(71.8)
24.8
(76.6)
25.9
(78.6)
26.1
(79)
26.0
(78.8)
23.9
(75)
21.0
(69.8)
17.7
(63.9)
14.6
(58.3)
20.9
(69.6)
Average low °C (°F) 7.8
(46)
9.1
(48.4)
12.1
(53.8)
15.1
(59.2)
18.3
(64.9)
19.9
(67.8)
20.2
(68.4)
20.0
(68)
18.3
(64.9)
15.3
(59.5)
11.7
(53.1)
8.8
(47.8)
14.7
(58.5)
Record low °C (°F) −5
(23)
−7
(19)
−1
(30)
2.0
(35.6)
−2.0
(28.4)
−7.0
(19.4)
−5.0
(23)
Precipitation mm (inches) 35.0
(1.378)
16.0
(0.63)
19.0
(0.748)
37.0
(1.457)
79.0
(3.11)
76.0
(2.992)
72.0
(2.835)
82.0
(3.228)
149.0
(5.866)
77.0
(3.031)
28.0
(1.102)
29.0
(1.142)
700.0
(27.559)
Avg. precipitation days (≥ 0.1 mm) 3.9 2.9 1.8 3.0 4.5 4.38 3.7 4.6 7.0 4.1 2.9 3.1 45.8
Source: Weatherbase: San Nicolas, Tamaulipas[3]

Climatic Classification. Cfa (Koppen) or Crhl (Trewartha). Borderline BS

References[edit]

  1. ^ "Sierra de Tamaulipas: RTP-91" http://www.conabio.gob.mx/conocimiento/regionalizacion/doctos/rtp_091.pdf, accessed 26 February 2013; Google Earth
  2. ^ "Inventario floristico de la Sierra de San Carlos, Tamps" http://www.conabio.gob.mx/institucion/proyectos/resultados/InfP024.pdf; "Sierra de Tamaulipas: RTP-91" http://www.conabio.gob.mx/conocimiento/regionalizacion/doctos/rtp_091.pdf, accessed 26 February 2013
  3. ^ "Travel Weather Averages". Weatherbase. Retrieved February 24, 2013.