Weather Records on 18 April 1970

771 weather records were set or tied worldwide on 18 April 1970. Highest significance: Orman Dam, US.

Key Facts for 18 April 1970

On 18 April 1970, 771 weather records were set or tied at long-record stations worldwide.
141 were record highs and 96 were record lows, counting maximum and minimum temperature.
By timescale, 9 were all-time records, 23 monthly and 739 daily.
Orman Dam set an all-time record daily snowfall of 61.0 cm (24.0 in) on 18 April 1970.
Across 160 earlier years (1793 to 2026) the same calendar date averaged 465 records.

Record Map

771 stations

771 station records on 18 April 1970 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 April 1970: highest significance records shown on the map
Station	Country	Type	Value	Significance
Orman Dam	United States	Record daily snowfall	61.0 cm (24.0 in)	73 of 100 (Major)
Schierke	Germany	Record snow depth	90.0 cm (35.4 in)	72 of 100 (Major)
Alva 1W	United States	Record daily precipitation	75.9 mm (3.0 in)	69 of 100 (Major)
Lemmon	United States	Record daily snowfall	15.2 cm (6.0 in)	64 of 100 (Major)
Kamensk-Sahtinskij	Russia	Record daily precipitation	54.7 mm (2.2 in)	61 of 100 (Major)
Urjupinsk	Russia	Record daily precipitation	30.4 mm (1.2 in)	60 of 100 (Major)
Linton	United States	Record daily snowfall	17.8 cm (7.0 in)	60 of 100 (Major)
Hermosa 3 SSW	United States	Record daily precipitation	50.8 mm (2.0 in)	60 of 100 (Major)
Millerovo	Russia	Record daily precipitation	33.1 mm (1.3 in)	58 of 100 (Notable)
Carrollton	United States	Record daily precipitation	41.4 mm (1.6 in)	57 of 100 (Notable)
Sidney	United States	Record snow depth	12.7 cm (5.0 in)	57 of 100 (Notable)
Altastenberg	Germany	Record snow depth	108.0 cm (42.5 in)	56 of 100 (Notable)
Wai	India	Record daily precipitation	87.5 mm (3.4 in)	56 of 100 (Notable)
Olyfenfontein	South Africa	Record daily precipitation	88.0 mm (3.5 in)	54 of 100 (Notable)
Camargo	United States	Record daily precipitation	95.3 mm (3.8 in)	54 of 100 (Notable)
Appleton City	United States	Record daily precipitation	67.6 mm (2.7 in)	52 of 100 (Notable)
Reivilo	South Africa	Record daily precipitation	70.0 mm (2.8 in)	51 of 100 (Notable)
Liberal	United States	Record daily precipitation	65.8 mm (2.6 in)	51 of 100 (Notable)
San Jon	United States	Record daily precipitation	58.9 mm (2.3 in)	51 of 100 (Notable)
Mott	United States	Record daily snowfall	10.2 cm (4.0 in)	51 of 100 (Notable)
Hermosa 3 SSW	United States	Record daily snowfall	61.0 cm (24.0 in)	51 of 100 (Notable)
Jewell	United States	Record daily precipitation	29.2 mm (1.1 in)	50 of 100 (Notable)
Colony	United States	Record daily snowfall	25.4 cm (10.0 in)	50 of 100 (Notable)
Cottonwood Falls	United States	Record daily precipitation	47.0 mm (1.9 in)	48 of 100 (Notable)
Fairview	United States	Record daily precipitation	70.6 mm (2.8 in)	48 of 100 (Notable)
Ardmore 1 NW	United States	Record daily snowfall	30.5 cm (12.0 in)	48 of 100 (Notable)
Midland	United States	Record daily precipitation	42.7 mm (1.7 in)	48 of 100 (Notable)
Fichtelberg	Germany	Record snow depth	265.0 cm (104.3 in)	47 of 100 (Notable)
Helena 1 SSE	United States	Record daily precipitation	77.0 mm (3.0 in)	47 of 100 (Notable)
Belle Fourche	United States	Record daily snowfall	50.8 cm (20.0 in)	47 of 100 (Notable)
Brocken	Germany	Record snow depth	335.0 cm (131.9 in)	46 of 100 (Notable)
Great Bend 3WNW	United States	Record daily precipitation	38.4 mm (1.5 in)	46 of 100 (Notable)
Kingman	United States	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Guide Rock	United States	Record daily precipitation	48.3 mm (1.9 in)	46 of 100 (Notable)
Boscobel	South Africa	Record daily precipitation	55.0 mm (2.2 in)	45 of 100 (Notable)
Ft Morgan	United States	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Conchas Dam	United States	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Faith	United States	Record snow depth	40.6 cm (16.0 in)	45 of 100 (Notable)
Hot Springs	United States	Record daily snowfall	35.6 cm (14.0 in)	45 of 100 (Notable)
Oelrichs	United States	Record daily precipitation	40.6 mm (1.6 in)	45 of 100 (Notable)
Timber Lake	United States	Record daily snowfall	35.6 cm (14.0 in)	45 of 100 (Notable)
Vale	United States	Record daily precipitation	34.3 mm (1.4 in)	45 of 100 (Notable)
Anthony	United States	Record daily precipitation	109.7 mm (4.3 in)	45 of 100 (Notable)
Paonia 1SW	United States	Record daily precipitation	28.7 mm (1.1 in)	44 of 100 (Notable)
Lawrence	United States	Record daily precipitation	36.8 mm (1.4 in)	44 of 100 (Notable)
Mt Hope	United States	Record daily precipitation	60.7 mm (2.4 in)	44 of 100 (Notable)
Newton	United States	Record daily precipitation	50.0 mm (2.0 in)	44 of 100 (Notable)
Ft Yates 4 SW	United States	Record daily snowfall	5.1 cm (2.0 in)	44 of 100 (Notable)
Minot Exp STN	United States	Record snow depth	30.5 cm (12.0 in)	44 of 100 (Notable)
Dacoma 2 NE	United States	Record daily precipitation	82.3 mm (3.2 in)	44 of 100 (Notable)
Waynoka	United States	Record daily precipitation	73.9 mm (2.9 in)	44 of 100 (Notable)
Low Head (Comparison)	Australia	Record high maximum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Cottonwood 2 E	United States	Record snow depth	30.5 cm (12.0 in)	43 of 100 (Notable)
Oelrichs	United States	Record daily snowfall	41.1 cm (16.2 in)	43 of 100 (Notable)
Canadian	United States	Record daily precipitation	40.6 mm (1.6 in)	43 of 100 (Notable)
Stratford	United States	Record daily precipitation	42.2 mm (1.7 in)	43 of 100 (Notable)
Shoshone	United States	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Alton 1 W	United States	Record daily precipitation	35.6 mm (1.4 in)	42 of 100 (Notable)
Selfridge 2 NE	United States	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Itirapina	Brazil	Record daily precipitation	51.3 mm (2.0 in)	41 of 100 (Notable)

Counts by Type and Timescale

771 records

Records set or tied on 18 April 1970 by type: Highest daily maximum 24, Lowest daily maximum 74, Highest daily minimum 117, Lowest daily minimum 22, Heaviest daily rainfall 416, Heaviest daily snowfall 83, Deepest snow cover 35.

Records on 18 April 1970 by type
Record type	Records
Highest daily maximum	24
Lowest daily maximum	74
Highest daily minimum	117
Lowest daily minimum	22
Heaviest daily rainfall	416
Heaviest daily snowfall	83
Deepest snow cover	35

Records on 18 April 1970 by timescale: all-time 9, monthly 23, daily 739.

How Much Records Were Beaten By

657 broken records

Margins by which the 657 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 1850.0. Ties are not counted.

Top 20 by Significance

18 April 1970

Top 20 records on 18 April 1970 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 April 1970	Orman Dam, US	all-time snowfall	61.0 cm (24.0 in)	25.4 cm (10.0 in)	26 years	73 of 100 (Major)
18 April 1970	Schierke, DE	daily snow depth	90.0 cm (35.4 in)	61.0 cm (24.0 in)	81 years	72 of 100 (Major)
18 April 1970	Alva 1W, US	daily rain	75.9 mm (3.0 in)	50.5 mm (2.0 in)	73 years	69 of 100 (Major)
18 April 1970	Lemmon, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	60 years	64 of 100 (Major)
18 April 1970	Kamensk-Sahtinskij, RU	monthly rain	54.7 mm (2.2 in)	34.1 mm (1.3 in)	28 years	61 of 100 (Major)
18 April 1970	Urjupinsk, RU	daily rain	30.4 mm (1.2 in)	13.0 mm (0.5 in)	79 years	60 of 100 (Major)
18 April 1970	Linton, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	52 years	60 of 100 (Major)
18 April 1970	Hermosa 3 SSW, US	daily rain	50.8 mm (2.0 in)	31.7 mm (1.2 in)	49 years	60 of 100 (Major)
18 April 1970	Millerovo, RU	monthly rain	33.1 mm (1.3 in)	15.9 mm (0.6 in)	16 years	58 of 100 (Notable)
18 April 1970	Carrollton, US	daily rain	41.4 mm (1.6 in)	25.9 mm (1.0 in)	73 years	57 of 100 (Notable)
18 April 1970	Sidney, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	59 years	57 of 100 (Notable)
18 April 1970	Altastenberg, DE	daily snow depth	108.0 cm (42.5 in)	58.0 cm (22.8 in)	33 years	56 of 100 (Notable)
18 April 1970	Wai, IN	daily rain	87.5 mm (3.4 in)	62.1 mm (2.4 in)	32 years	56 of 100 (Notable)
18 April 1970	Olyfenfontein, ZA	monthly rain	88.0 mm (3.5 in)	31.4 mm (1.2 in)	39 years	54 of 100 (Notable)
18 April 1970	Camargo, US	daily rain	95.3 mm (3.8 in)	79.8 mm (3.1 in)	36 years	54 of 100 (Notable)
18 April 1970	Appleton City, US	daily rain	67.6 mm (2.7 in)	49.8 mm (2.0 in)	32 years	52 of 100 (Notable)
18 April 1970	Reivilo, ZA	daily rain	70.0 mm (2.8 in)	61.4 mm (2.4 in)	28 years	51 of 100 (Notable)
18 April 1970	Liberal, US	monthly rain	65.8 mm (2.6 in)	15.3 mm (0.6 in)	54 years	51 of 100 (Notable)
18 April 1970	San Jon, US	daily rain	58.9 mm (2.3 in)	47.5 mm (1.9 in)	17 years	51 of 100 (Notable)
18 April 1970	Mott, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	61 years	51 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1793 to 1970

Records set or tied on this calendar date in each year from 1793 to 1970. 1970 had 771 records.

Counts for years before the ledger starts come from the same station rules.

Records on 04-18 in each year
Year	Records
1793	1
1807	2
1815	1
1838	1
1847	1
1849	1
1851	1
1852	3
1854	3
1855	1
1865	4
1867	1
1870	1
1871	1
1875	4
1877	2
1878	1
1879	3
1880	2
1884	2
1886	2
1887	3
1888	1
1889	1
1890	2
1891	1
1892	3
1893	5
1894	7
1895	2
1896	3
1897	5
1898	8
1899	2
1900	2
1901	6
1902	5
1903	11
1904	9
1905	12
1906	18
1907	17
1908	37
1909	19
1910	19
1911	25
1912	21
1913	26
1914	38
1915	31
1916	22
1917	40
1918	76
1919	16
1920	64
1921	58
1922	85
1923	107
1924	101
1925	154
1926	322
1927	391
1928	323
1929	126
1930	113
1931	173
1932	326
1933	211
1934	391
1935	264
1936	483
1937	477
1938	711
1939	525
1940	322
1941	496
1942	287
1943	298
1944	259
1945	371
1946	357
1947	444
1948	932
1949	345
1950	244
1951	658
1952	536
1953	1,322
1954	442
1955	817
1956	467
1957	629
1958	370
1959	468
1960	320
1961	520
1962	484
1963	662
1964	449
1965	363
1966	776
1967	882
1968	867
1969	795
1970	771
1971	1,106
1972	470
1973	953
1974	326
1975	751
1976	1,309
1977	717
1978	803
1979	841
1980	842
1981	708
1982	616
1983	2,082
1984	625
1985	1,119
1986	622
1987	1,068
1988	936
1989	625
1990	1,368
1991	780
1992	702
1993	730
1994	1,218
1995	1,601
1996	826
1997	1,256
1998	1,011
1999	1,428
2000	912
2001	1,487
2002	2,084
2003	969
2004	846
2005	622
2006	1,262
2007	675
2008	913
2009	624
2010	478
2011	1,122
2012	744
2013	2,509
2014	534
2015	519
2016	973
2017	588
2018	1,202
2019	601
2020	770
2021	592
2022	1,013
2023	739
2024	641
2025	997
2026	498

Download the Data

Data for records on 1970-04-18: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 250	647
250 to 500	6
500 to 750	2
750 to 1000	0
1000 to 1250	1
1250 to 1500	0
1500 to 1750	0
1750 to 2000	1