Örskär

Örskär, is a Swedish island and lighthouse station located north of Gräsö on the Uppland coastline. A large part of the island is a nature reserve and it is rich of unusual flowers such as wild orchids. The island is also noted to be a good place for birding. A very small hostel exists on the island.

Örskär Lighthouse
Örskär Lighthouse
Sweden
LocationÖrskär, north of
Gräsö
Östhammar
Sweden
Coordinates60.526368°N 18.373346°E / 60.526368; 18.373346
Year first constructed1687 (first)
Year first lit1740 (current)
Automated1978
Foundationstone
Constructionstone tower
Tower shapemassive two-stage tower: octagonal prism lower section, cylindrical upper section with balcony and lantern
Markings / patternwhite tower with a black band on each stage
Tower height32 metres (105 ft)
Focal height36.5 metres (120 ft)
Original lensmirrors
Current lens4th order fresnel lens
Range16 nautical miles (30 km; 18 mi)
CharacteristicFl (2) W 10s.
Admiralty numberC6236
NGA number10256
ARLHS numberSWE-2158
Sweden numberSV-2125
Managing agentSwedish Maritime Administration (Sjöfartsverket)[1]

History

Örskär was one of the first lightstations to be built in Sweden. The first lighthouse was constructed of wood in 1684, but was burned down in 1738 when it was hit by the lightning. The present tower was constructed by the royal architect Carl Hårleman. The flame in the lantern ran on colza oil lamps, and mirrors collected the light. Kerosene lamps replaced the colza oil lamps in the 1870s. It was finally electrified in 1954. Today the lighthouse is owned and remote-controlled by the Swedish Maritime Administration.

Climate

Örskär has a humid continental climate (Dfb) with maritime influence. Its exterior position from the Swedish mainland renders in smaller seasonal variations than nearby locations. Although it is a maritime microclimate, it is more prone to extremes in temperatures than other outlying weather stations.

Climate data for Örskär (2002–2015; precipitation 1961–1990; extremes since 1937)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 9.1
(48.4)		 10.5
(50.9)		 15.9
(60.6)		 22.0
(71.6)		 28.0
(82.4)		 34.5
(94.1)		 32.5
(90.5)		 30.6
(87.1)		 26.0
(78.8)		 20.2
(68.4)		 12.1
(53.8)		 10.5
(50.9)		 34.5
(94.1)
Average high °C (°F) 0.4
(32.7)		 0.0
(32.0)		 2.9
(37.2)		 8.0
(46.4)		 12.7
(54.9)		 17.1
(62.8)		 20.9
(69.6)		 20.2
(68.4)		 15.8
(60.4)		 9.6
(49.3)		 5.4
(41.7)		 2.4
(36.3)		 9.6
(49.3)
Daily mean °C (°F) −1.3
(29.7)		 −1.8
(28.8)		 0.4
(32.7)		 4.7
(40.5)		 9.4
(48.9)		 13.9
(57.0)		 17.8
(64.0)		 17.3
(63.1)		 13.3
(55.9)		 7.6
(45.7)		 3.8
(38.8)		 0.7
(33.3)		 7.1
(44.8)
Average low °C (°F) −3.1
(26.4)		 −3.6
(25.5)		 −2.1
(28.2)		 1.5
(34.7)		 6.1
(43.0)		 10.6
(51.1)		 14.7
(58.5)		 14.5
(58.1)		 10.7
(51.3)		 5.7
(42.3)		 2.1
(35.8)		 −1.0
(30.2)		 4.6
(40.3)
Record low °C (°F) −26.0
(−14.8)		 −28.9
(−20.0)		 −22.1
(−7.8)		 −15.8
(3.6)		 −5.2
(22.6)		 2.4
(36.3)		 7.1
(44.8)		 5.5
(41.9)		 −0.4
(31.3)		 −3.4
(25.9)		 −10.5
(13.1)		 −17.3
(0.9)		 −28.9
(−20.0)
Average precipitation mm (inches) 30.5
(1.20)		 22.8
(0.90)		 22.2
(0.87)		 25.5
(1.00)		 26.0
(1.02)		 30.5
(1.20)		 44.6
(1.76)		 60.3
(2.37)		 48.6
(1.91)		 39.5
(1.56)		 46.8
(1.84)		 34.9
(1.37)		 432.0
(17.01)
Source 1: SMHI[2]
Source 2: SMHI Monthly Data 2002–2015[3]
gollark: NO!
gollark: Weird thing to have exæms on.
gollark: *En*coding?
gollark: Go MOSFET yourself.
gollark: Workweekdays, sorry.

See also

References
  1. Örskär Archived 1 May 2016 at the Wayback Machine The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 6 April 2016
  2. "Precipitation Normals 1961–1990 (Swedish)" (in Swedish). Swedish Metereological and Hydrological Institute (Örskär code 10 832). Archived from the original on 1 January 2016. Retrieved 28 June 2016.
  3. "Monthly and Yearly Statistics (Swedish)" (in Swedish). SMHI. 28 June 2016. Archived from the original on 20 February 2015. Retrieved 28 June 2016.


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