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Built 2026-10-19 (19 October 2026)

Alcan Minesite Threshold Days by Year (ASN00014509)

5 fixed thresholds counted per year at Alcan Minesite (ASN00014509): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alcan Minesite Thresholds

  • Alcan Minesite: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 2000 with 58.
  • Alcan Minesite: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1999 with 32.
  • Alcan Minesite: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 2015 with 15.
  • Alcan Minesite: days with 100 mm (3.94 in) or more of precipitation in 20 years, most in 2015 with 5.
  • 5 fixed thresholds have at least one qualifying day at Alcan Minesite.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Alcan Minesite Days per year at Alcan Minesite with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 2000. 02040601972: 311975: 431976: 191977: 351978: 251979: 281980: 291981: 191982: 381983: 361984: 311985: 381986: 321987: 431988: 321989: 421990: 231991: 331992: 331993: 371994: 261995: 461996: 401997: 281998: 491999: 572000: 582001: 532002: 182003: 382004: 352005: 232006: 542014: 342015: 412016: 202018: 301972197819821986199019941998200220062018
Days per year at Alcan Minesite with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 58 in 2000.
Days with 10 mm (0.39 in) or more of precipitation per year at Alcan Minesite
YearDaysDecade average
19723130.2
19754330.2
19761930.2
19773530.2
19782530.2
19792830.2
19802934
19811934
19823834
19833634
19843134
19853834
19863234
19874334
19883234
19894234
19902337.2
19913337.2
19923337.2
19933737.2
19942637.2
19954637.2
19964037.2
19972837.2
19984937.2
19995737.2
20005839.9
20015339.9
20021839.9
20033839.9
20043539.9
20052339.9
20065439.9
20143431.3
20154131.3
20162031.3
20183031.3
First to last qualifying date each year at Alcan Minesite For each year, a bar from the first to the last day at Alcan Minesite meeting 10 mm (0.39 in). 1972: 4 January 1972 to 12 December 19721975: 9 January 1975 to 22 December 19751976: 6 January 1976 to 17 December 19761977: 4 January 1977 to 21 December 19771978: 14 January 1978 to 31 December 19781979: 7 January 1979 to 31 December 19791980: 3 January 1980 to 20 November 19801981: 5 January 1981 to 2 December 19811982: 10 January 1982 to 7 June 19821983: 9 January 1983 to 17 December 19831984: 7 January 1984 to 27 December 19841985: 24 January 1985 to 27 December 19851986: 5 January 1986 to 9 December 19861987: 13 January 1987 to 24 December 19871988: 2 January 1988 to 31 December 19881989: 3 January 1989 to 31 December 19891990: 10 January 1990 to 25 December 19901991: 8 January 1991 to 16 December 19911992: 7 January 1992 to 30 December 19921993: 2 January 1993 to 29 December 19931994: 12 January 1994 to 2 December 19941995: 12 January 1995 to 31 December 19951996: 4 January 1996 to 31 December 19961997: 1 January 1997 to 27 December 19971998: 1 January 1998 to 31 December 19981999: 8 January 1999 to 29 December 19992000: 18 January 2000 to 27 December 20002001: 6 January 2001 to 22 December 20012002: 1 January 2002 to 3 September 20022003: 4 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 30 December 20052006: 5 January 2006 to 29 December 20062014: 12 January 2014 to 26 December 20142015: 6 January 2015 to 27 December 20152016: 30 January 2016 to 30 December 20162018: 8 January 2018 to 4 July 201819721979198419891994199920042016JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Alcan Minesite meeting 10 mm (0.39 in).
First to last qualifying date each year at Alcan Minesite
YearFirst dateLast date
19721972-01-041972-12-12
19751975-01-091975-12-22
19761976-01-061976-12-17
19771977-01-041977-12-21
19781978-01-141978-12-31
19791979-01-071979-12-31
19801980-01-031980-11-20
19811981-01-051981-12-02
19821982-01-101982-06-07
19831983-01-091983-12-17
19841984-01-071984-12-27
19851985-01-241985-12-27
19861986-01-051986-12-09
19871987-01-131987-12-24
19881988-01-021988-12-31
19891989-01-031989-12-31
19901990-01-101990-12-25
19911991-01-081991-12-16
19921992-01-071992-12-30
19931993-01-021993-12-29
19941994-01-121994-12-02
19951995-01-121995-12-31
19961996-01-041996-12-31
19971997-01-011997-12-27
19981998-01-011998-12-31
19991999-01-081999-12-29
20002000-01-182000-12-27
20012001-01-062001-12-22
20022002-01-012002-09-03
20032003-01-042003-12-31
20042004-01-012004-12-31
20052005-01-012005-12-30
20062006-01-052006-12-29
20142014-01-122014-12-26
20152015-01-062015-12-27
20162016-01-302016-12-30
20182018-01-082018-07-04

Every Fixed Threshold

Fixed thresholds at Alcan Minesite
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3758200030
25 mm (0.98 in): Days with 25 mm or more rain3732199915
50 mm (1.97 in): Days with 50 mm or more rain341520155
100 mm (3.94 in): Days with 100 mm or more rain20520155
200 mm (7.87 in): Days with 200 mm or more rain4119751

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1972.

Download the Data

  • Data for Alcan Minesite threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).