Weather Records on 6 April 1973

449 weather records were set or tied worldwide on 6 April 1973. Highest significance: Modderrivier (Pol), ZA.

Key Facts for 6 April 1973

On 6 April 1973, 449 weather records were set or tied at long-record stations worldwide.
53 were record highs and 148 were record lows, counting maximum and minimum temperature.
By timescale, 5 were all-time records, 18 monthly and 426 daily.
Modderrivier (Pol) set an all-time record daily precipitation of 135.0 mm (5.3 in) on 6 April 1973.
Across 156 earlier years (1808 to 2026) the same calendar date averaged 487 records.

Record Map

449 stations

449 station records on 6 April 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 6 April 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Modderrivier (Pol)	South Africa	Record daily precipitation	135.0 mm (5.3 in)	73 of 100 (Major)
Bajanaul	Kazakhstan	Record daily precipitation	50.0 mm (2.0 in)	61 of 100 (Major)
Alton	United States	Record snow depth	68.6 cm (27.0 in)	58 of 100 (Notable)
Eureka	South Africa	Record daily precipitation	66.0 mm (2.6 in)	56 of 100 (Notable)
Witbankfontein	South Africa	Record daily precipitation	66.0 mm (2.6 in)	55 of 100 (Notable)
Red Rvr	United States	Record snow depth	86.4 cm (34.0 in)	55 of 100 (Notable)
Wesselsbron (Mun)	South Africa	Record daily precipitation	58.5 mm (2.3 in)	51 of 100 (Notable)
Ft Valley	United States	Record snow depth	94.0 cm (37.0 in)	51 of 100 (Notable)
Kismet Estate	South Africa	Record daily precipitation	47.1 mm (1.9 in)	48 of 100 (Notable)
Dunmurray	South Africa	Record daily precipitation	48.5 mm (1.9 in)	47 of 100 (Notable)
Cimarron 4 SW	United States	Record snow depth	20.3 cm (8.0 in)	47 of 100 (Notable)
Estancia	Brazil	Record daily precipitation	72.5 mm (2.9 in)	46 of 100 (Notable)
Moreson	South Africa	Record daily precipitation	49.0 mm (1.9 in)	46 of 100 (Notable)
Nicholson	Australia	Record daily precipitation	54.4 mm (2.1 in)	43 of 100 (Notable)
Kasumkent	Russia	Record daily precipitation	30.2 mm (1.2 in)	43 of 100 (Notable)
Drieputs	South Africa	Record daily precipitation	44.0 mm (1.7 in)	43 of 100 (Notable)
White Cliffs (Monolon)	Australia	Record daily precipitation	28.2 mm (1.1 in)	42 of 100 (Notable)
Swartkoppie	South Africa	Record daily precipitation	55.0 mm (2.2 in)	42 of 100 (Notable)
Xochipala	Mexico	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Sarajevo	Bosnia and Herzegovina	Record daily precipitation	87.6 mm (3.4 in)	40 of 100 (Notable)
Missao Velha	Brazil	Record daily precipitation	132.4 mm (5.2 in)	40 of 100 (Notable)
Argyle Downs	Australia	Record daily precipitation	27.9 mm (1.1 in)	39 of 100 (Notable)
Doornpoort	South Africa	Record daily precipitation	48.0 mm (1.9 in)	38 of 100 (Notable)
Rosewood	Australia	Record daily precipitation	58.4 mm (2.3 in)	37 of 100 (Notable)
Piracicaba	Brazil	Record daily precipitation	32.3 mm (1.3 in)	37 of 100 (Notable)
Cajazeiras	Brazil	Record daily precipitation	130.0 mm (5.1 in)	37 of 100 (Notable)
Crato	Brazil	Record daily precipitation	110.0 mm (4.3 in)	37 of 100 (Notable)
Neverset	South Africa	Record daily precipitation	61.5 mm (2.4 in)	37 of 100 (Notable)
Duncan	United States	Record low minimum temperature	-10.6 C (12.9 F)	37 of 100 (Notable)
Tibaji	Brazil	Record daily precipitation	52.0 mm (2.0 in)	36 of 100 (Notable)
Sitio Arapua	Brazil	Record daily precipitation	93.0 mm (3.7 in)	36 of 100 (Notable)
Huejotzingo	Mexico	Record low maximum temperature	12.8 C (55.0 F)	36 of 100 (Notable)
Hertzogville (Pol)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	36 of 100 (Notable)
Caninde de Sao Francisco	Brazil	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Calvillo (Smn)	Mexico	Record low maximum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Altamura	South Africa	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)
Roodepoort	South Africa	Record daily precipitation	35.0 mm (1.4 in)	34 of 100 (Routine)
Maracanau	Brazil	Record daily precipitation	58.0 mm (2.3 in)	33 of 100 (Routine)
Antenor Navarro	Brazil	Record daily precipitation	137.0 mm (5.4 in)	33 of 100 (Routine)
Grootkuil	South Africa	Record daily precipitation	37.0 mm (1.5 in)	33 of 100 (Routine)
Theunissen (Mun)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	33 of 100 (Routine)
Heilbron (Tnk)	South Africa	Record daily precipitation	44.5 mm (1.8 in)	33 of 100 (Routine)
Bosque del Apache	United States	Record low maximum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Nitchequon	Canada	Record daily snowfall	13.7 cm (5.4 in)	32 of 100 (Routine)
Ingenio Tamazula	Mexico	Record low maximum temperature	25.6 C (78.1 F)	32 of 100 (Routine)
Griquatown (Tnk)	South Africa	Record daily precipitation	26.0 mm (1.0 in)	32 of 100 (Routine)
Wexford	South Africa	Record daily precipitation	29.5 mm (1.2 in)	32 of 100 (Routine)
Imaculada	Brazil	Record daily precipitation	125.0 mm (4.9 in)	31 of 100 (Routine)
Bom Conselho	Brazil	Record daily precipitation	27.4 mm (1.1 in)	31 of 100 (Routine)
Gospic	Croatia	Record low minimum temperature	-3.9 C (25.0 F)	31 of 100 (Routine)
Nelsdrift	South Africa	Record daily precipitation	36.5 mm (1.4 in)	31 of 100 (Routine)
Leroy 5 WSW	United States	Record daily snowfall	16.5 cm (6.5 in)	31 of 100 (Routine)
Ft Kent	United States	Record daily snowfall	7.6 cm (3.0 in)	31 of 100 (Routine)
Elk	United States	Record low minimum temperature	-6.7 C (19.9 F)	31 of 100 (Routine)
Hallettsville 2 N	United States	Record low maximum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Mascota (Smn)	Mexico	Record low maximum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Oorlogshoek	South Africa	Record daily precipitation	33.5 mm (1.3 in)	30 of 100 (Routine)
Westminter Estate	South Africa	Record daily precipitation	37.0 mm (1.5 in)	30 of 100 (Routine)
Woodruff	United States	Record high minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Cuncas	Brazil	Record daily precipitation	64.2 mm (2.5 in)	29 of 100 (Routine)

Counts by Type and Timescale

449 records

Records set or tied on 6 April 1973 by type: Highest daily maximum 11, Lowest daily maximum 87, Highest daily minimum 42, Lowest daily minimum 61, Heaviest daily rainfall 223, Heaviest daily snowfall 17, Deepest snow cover 8.

Records on 6 April 1973 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	87
Highest daily minimum	42
Lowest daily minimum	61
Heaviest daily rainfall	223
Heaviest daily snowfall	17
Deepest snow cover	8

Records on 6 April 1973 by timescale: all-time 5, monthly 18, daily 426.

How Much Records Were Beaten By

371 broken records

Margins by which the 371 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 686.0. Ties are not counted.

Top 20 by Significance

6 April 1973

Top 20 records on 6 April 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 April 1973	Modderrivier (Pol), ZA	all-time rain	135.0 mm (5.3 in)	60.8 mm (2.4 in)	25 years	73 of 100 (Major)
6 April 1973	Bajanaul, KZ	monthly rain	50.0 mm (2.0 in)	21.5 mm (0.8 in)	27 years	61 of 100 (Major)
6 April 1973	Alton, US	daily snow depth	68.6 cm (27.0 in)	68.6 cm (27.0 in)	44 years	58 of 100 (Notable)
6 April 1973	Eureka, ZA	daily rain	66.0 mm (2.6 in)	55.8 mm (2.2 in)	36 years	56 of 100 (Notable)
6 April 1973	Witbankfontein, ZA	daily rain	66.0 mm (2.6 in)	47.5 mm (1.9 in)	31 years	55 of 100 (Notable)
6 April 1973	Red Rvr, US	daily snow depth	86.4 cm (34.0 in)	58.5 cm (23.0 in)	31 years	55 of 100 (Notable)
6 April 1973	Wesselsbron (Mun), ZA	daily rain	58.5 mm (2.3 in)	43.8 mm (1.7 in)	28 years	51 of 100 (Notable)
6 April 1973	Ft Valley, US	daily snow depth	94.0 cm (37.0 in)	58.4 cm (23.0 in)	20 years	51 of 100 (Notable)
6 April 1973	Kismet Estate, ZA	daily rain	47.1 mm (1.9 in)	30.8 mm (1.2 in)	43 years	48 of 100 (Notable)
6 April 1973	Dunmurray, ZA	daily rain	48.5 mm (1.9 in)	34.0 mm (1.3 in)	36 years	47 of 100 (Notable)
6 April 1973	Cimarron 4 SW, US	daily snow depth	20.3 cm (8.0 in)	20.3 cm (8.0 in)	68 years	47 of 100 (Notable)
6 April 1973	Estancia, BR	daily rain	72.5 mm (2.9 in)	53.4 mm (2.1 in)	8 years	46 of 100 (Notable)
6 April 1973	Moreson, ZA	daily rain	49.0 mm (1.9 in)	31.0 mm (1.2 in)	43 years	46 of 100 (Notable)
6 April 1973	Nicholson, AU	daily rain	54.4 mm (2.1 in)	42.5 mm (1.7 in)	14 years	43 of 100 (Notable)
6 April 1973	Kasumkent, RU	daily rain	30.2 mm (1.2 in)	24.3 mm (1.0 in)	4 years	43 of 100 (Notable)
6 April 1973	Drieputs, ZA	daily rain	44.0 mm (1.7 in)	31.3 mm (1.2 in)	32 years	43 of 100 (Notable)
6 April 1973	White Cliffs (Monolon), AU	daily rain	28.2 mm (1.1 in)	28.2 mm (1.1 in)	32 years	42 of 100 (Notable)
6 April 1973	Swartkoppie, ZA	daily rain	55.0 mm (2.2 in)	37.0 mm (1.5 in)	12 years	42 of 100 (Notable)
6 April 1973	Xochipala, MX	daily rain	29.0 mm (1.1 in)	29.0 mm (1.1 in)	31 years	41 of 100 (Notable)
6 April 1973	Sarajevo, BA	all-time rain	87.6 mm (3.4 in)	0.8 mm (0.03 in)	41 years	40 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

1808 to 1973

Records set or tied on this calendar date in each year from 1808 to 1973. 1973 had 449 records.

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

Records on 04-06 in each year
Year	Records
1808	1
1809	2
1815	1
1839	2
1841	1
1848	1
1851	1
1853	1
1857	1
1859	2
1862	1
1863	1
1864	2
1866	1
1874	1
1881	5
1883	1
1884	1
1886	6
1887	2
1888	4
1889	1
1892	4
1893	1
1894	4
1895	3
1896	3
1897	2
1898	5
1899	3
1900	3
1901	5
1902	6
1903	5
1904	16
1905	18
1906	8
1907	21
1908	11
1909	43
1910	59
1911	59
1912	49
1913	101
1914	32
1915	25
1916	43
1917	120
1918	68
1919	65
1920	57
1921	229
1922	96
1923	96
1924	91
1925	73
1926	442
1927	80
1928	398
1929	959
1930	265
1931	248
1932	257
1933	499
1934	211
1935	460
1936	911
1937	301
1938	637
1939	611
1940	257
1941	205
1942	413
1943	510
1944	369
1945	303
1946	312
1947	411
1948	417
1949	316
1950	664
1951	559
1952	492
1953	261
1954	789
1955	342
1956	360
1957	330
1958	507
1959	551
1960	718
1961	382
1962	456
1963	551
1964	558
1965	524
1966	390
1967	671
1968	507
1969	504
1970	525
1971	691
1972	772
1973	449
1974	580
1975	1,188
1976	356
1977	838
1978	654
1979	1,233
1980	520
1981	388
1982	3,186
1983	1,454
1984	578
1985	856
1986	654
1987	1,120
1988	1,273
1989	1,396
1990	856
1991	1,939
1992	952
1993	721
1994	1,124
1995	973
1996	1,054
1997	1,870
1998	860
1999	1,703
2000	714
2001	1,172
2002	778
2003	1,339
2004	669
2005	818
2006	1,131
2007	1,328
2008	803
2009	885
2010	1,352
2011	841
2012	675
2013	595
2014	518
2015	396
2016	920
2017	490
2018	1,069
2019	397
2020	608
2021	948
2022	854
2023	1,598
2024	1,706
2025	1,034
2026	600

Download the Data

Data for records on 1973-04-06: 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 100	367
100 to 200	0
200 to 300	1
300 to 400	0
400 to 500	0
500 to 600	2
600 to 700	1