Weather Records on 11 April 1984

623 weather records were set or tied worldwide on 11 April 1984. Highest significance: Yellowstone Park Mammoth, US.

Key Facts for 11 April 1984

On 11 April 1984, 623 weather records were set or tied at long-record stations worldwide.
126 were record highs and 187 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 17 monthly and 606 daily.
Yellowstone Park Mammoth set a monthly record daily snowfall of 20.3 cm (8.0 in) on 11 April 1984.
Across 164 earlier years (1800 to 2026) the same calendar date averaged 480 records.

Record Map

623 stations

623 station records on 11 April 1984 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 April 1984: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yellowstone Park Mammoth	United States	Record daily snowfall	20.3 cm (8.0 in)	58 of 100 (Notable)
Nazare	Brazil	Record daily precipitation	108.5 mm (4.3 in)	50 of 100 (Notable)
Tuzantla (Smn)	Mexico	Record low maximum temperature	27.2 C (81.0 F)	50 of 100 (Notable)
Mellette 4 W	United States	Record daily precipitation	26.2 mm (1.0 in)	50 of 100 (Notable)
Wialki North	Australia	Record daily precipitation	35.0 mm (1.4 in)	49 of 100 (Notable)
Bunnawarra	Australia	Record daily precipitation	25.6 mm (1.0 in)	47 of 100 (Notable)
Mummulgum (Bingeebeebra)	Australia	Record daily precipitation	139.0 mm (5.5 in)	47 of 100 (Notable)
Carterville	Australia	Record daily precipitation	27.5 mm (1.1 in)	45 of 100 (Notable)
Sappho 8 E	United States	Record daily precipitation	70.9 mm (2.8 in)	45 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	26.6 mm (1.0 in)	44 of 100 (Notable)
Benson	United States	Record daily precipitation	34.3 mm (1.4 in)	44 of 100 (Notable)
Gunnison 3SW	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Bowes	Australia	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Pyramid	United States	Record daily snowfall	25.4 cm (10.0 in)	40 of 100 (Notable)
Haleakala Rch 432	United States	Record daily precipitation	53.3 mm (2.1 in)	39 of 100 (Notable)
Yampa	United States	Record daily snowfall	20.3 cm (8.0 in)	38 of 100 (Notable)
Lastovo	Croatia	Record daily precipitation	33.7 mm (1.3 in)	35 of 100 (Notable)
Sandsprings	Australia	Record daily precipitation	31.4 mm (1.2 in)	34 of 100 (Routine)
Guarapari (Dnos)	Brazil	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
Nashville	United States	Record low minimum temperature	-2.8 C (27.0 F)	33 of 100 (Routine)
Leola	United States	Record high minimum temperature	7.2 C (45.0 F)	33 of 100 (Routine)
Marshall	United States	Record daily precipitation	43.7 mm (1.7 in)	33 of 100 (Routine)
Shusha	Azerbaijan	Record daily precipitation	30.6 mm (1.2 in)	32 of 100 (Routine)
Balmaha	Australia	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Goomarin	Australia	Record daily precipitation	28.0 mm (1.1 in)	32 of 100 (Routine)
Conway	United States	Record low maximum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Menno	United States	Record daily precipitation	39.1 mm (1.5 in)	32 of 100 (Routine)
Scofield Dam	United States	Record daily snowfall	17.8 cm (7.0 in)	32 of 100 (Routine)
Springerville	United States	Record high minimum temperature	8.9 C (48.0 F)	31 of 100 (Routine)
Manila	United States	Record daily snowfall	15.2 cm (6.0 in)	31 of 100 (Routine)
Washington 2 ESE	United States	Record low maximum temperature	8.3 C (46.9 F)	30 of 100 (Routine)
Camden 3 W	United States	Record low maximum temperature	8.9 C (48.0 F)	30 of 100 (Routine)
Fairbridge	Australia	Record daily precipitation	34.0 mm (1.3 in)	29 of 100 (Routine)
Wauchope (Avondale Street)	Australia	Record daily precipitation	39.4 mm (1.6 in)	29 of 100 (Routine)
Hvar	Croatia	Record daily precipitation	27.8 mm (1.1 in)	29 of 100 (Routine)
Manati 2 E	Puerto Rico [United States]	Record high maximum temperature	33.9 C (93.0 F)	29 of 100 (Routine)
Newcastle	United States	Record daily precipitation	56.1 mm (2.2 in)	29 of 100 (Routine)
Lumberton	United States	Record low maximum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Kingstree	United States	Record low maximum temperature	10.0 C (50.0 F)	29 of 100 (Routine)
Kazalinsk	Kazakhstan	Record low minimum temperature	-5.3 C (22.5 F)	28 of 100 (Routine)
Buenavista de Cuellar	Mexico	Record low maximum temperature	28.9 C (84.0 F)	28 of 100 (Routine)
Hostotipaquillo	Mexico	Record low maximum temperature	23.9 C (75.0 F)	28 of 100 (Routine)
Siler City 2 N	United States	Record low maximum temperature	5.6 C (42.1 F)	28 of 100 (Routine)
Key W Intl AP	United States	Record daily precipitation	43.2 mm (1.7 in)	28 of 100 (Routine)
Cimarron	United States	Record daily snowfall	7.6 cm (3.0 in)	27 of 100 (Routine)
Plain Dealing	United States	Record daily precipitation	32.8 mm (1.3 in)	27 of 100 (Routine)
Alexandria Chandler Fld	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Ostrov Vrangelja	Russia	Record low minimum temperature	-38.2 C (-36.8 F)	26 of 100 (Routine)
Cottonwood Weir	United States	Record daily snowfall	7.6 cm (3.0 in)	26 of 100 (Routine)
Key West NAS	United States	Record daily precipitation	37.3 mm (1.5 in)	26 of 100 (Routine)
Ashdown 4 SSE	United States	Record daily precipitation	34.5 mm (1.4 in)	25 of 100 (Routine)
Cheraw	United States	Record low maximum temperature	7.8 C (46.0 F)	25 of 100 (Routine)
Tremonton	United States	Record low maximum temperature	5.6 C (42.1 F)	25 of 100 (Routine)
Goldsboro 4 SE	United States	Record low maximum temperature	8.9 C (48.0 F)	25 of 100 (Routine)
Norfolk Karl Stefan Mem AP	United States	Record daily precipitation	31.8 mm (1.3 in)	25 of 100 (Routine)
Dardanup East	Australia	Record daily precipitation	25.0 mm (1.0 in)	24 of 100 (Routine)
Voru	Estonia	Record high maximum temperature	16.1 C (61.0 F)	24 of 100 (Routine)
Severnoe	Russia	Record low minimum temperature	-33.5 C (-28.3 F)	24 of 100 (Routine)
Tifton	United States	Record low maximum temperature	13.3 C (55.9 F)	24 of 100 (Routine)
Hawarden	United States	Record daily precipitation	26.2 mm (1.0 in)	24 of 100 (Routine)

Counts by Type and Timescale

623 records

Records set or tied on 11 April 1984 by type: Highest daily maximum 56, Lowest daily maximum 101, Highest daily minimum 70, Lowest daily minimum 86, Heaviest daily rainfall 275, Heaviest daily snowfall 22, Deepest snow cover 13.

Records on 11 April 1984 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	101
Highest daily minimum	70
Lowest daily minimum	86
Heaviest daily rainfall	275
Heaviest daily snowfall	22
Deepest snow cover	13

Records on 11 April 1984 by timescale: all-time 0, monthly 17, daily 606.

How Much Records Were Beaten By

511 broken records

Margins by which the 511 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

11 April 1984

Top 20 records on 11 April 1984 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 April 1984	Yellowstone Park Mammoth, US	monthly snowfall	20.3 cm (8.0 in)	5.1 cm (2.0 in)	84 years	58 of 100 (Notable)
11 April 1984	Nazare, BR	daily rain	108.5 mm (4.3 in)	72.9 mm (2.9 in)	20 years	50 of 100 (Notable)
11 April 1984	Tuzantla (Smn), MX	daily low max	27.2 C (81.0 F)	8.4 C (15.1 F)	43 years	50 of 100 (Notable)
11 April 1984	Mellette 4 W, US	daily rain	26.2 mm (1.0 in)	13.5 mm (0.5 in)	90 years	50 of 100 (Notable)
11 April 1984	Wialki North, AU	daily rain	35.0 mm (1.4 in)	30.2 mm (1.2 in)	25 years	49 of 100 (Notable)
11 April 1984	Bunnawarra, AU	daily rain	25.6 mm (1.0 in)	23.8 mm (0.9 in)	43 years	47 of 100 (Notable)
11 April 1984	Mummulgum (Bingeebeebra), AU	monthly rain	139.0 mm (5.5 in)	31.0 mm (1.2 in)	38 years	47 of 100 (Notable)
11 April 1984	Carterville, AU	daily rain	27.5 mm (1.1 in)	24.2 mm (1.0 in)	29 years	45 of 100 (Notable)
11 April 1984	Sappho 8 E, US	daily rain	70.9 mm (2.8 in)	35.8 mm (1.4 in)	38 years	45 of 100 (Notable)
11 April 1984	Mullewa, AU	daily rain	26.6 mm (1.0 in)	22.3 mm (0.9 in)	43 years	44 of 100 (Notable)
11 April 1984	Benson, US	daily rain	34.3 mm (1.4 in)	26.7 mm (1.1 in)	18 years	44 of 100 (Notable)
11 April 1984	Gunnison 3SW, US	daily snowfall	10.2 cm (4.0 in)	5.1 cm (2.0 in)	70 years	42 of 100 (Notable)
11 April 1984	Bowes, AU	daily rain	25.0 mm (1.0 in)	19.7 mm (0.8 in)	29 years	41 of 100 (Notable)
11 April 1984	Pyramid, US	daily snowfall	25.4 cm (10.0 in)	10.2 cm (4.0 in)	64 years	40 of 100 (Notable)
11 April 1984	Haleakala Rch 432, US	daily rain	53.3 mm (2.1 in)	29.9 mm (1.2 in)	60 years	39 of 100 (Notable)
11 April 1984	Yampa, US	daily snowfall	20.3 cm (8.0 in)	10.1 cm (4.0 in)	31 years	38 of 100 (Notable)
11 April 1984	Lastovo, HR	daily rain	33.7 mm (1.3 in)	20.5 mm (0.8 in)	10 years	35 of 100 (Notable)
11 April 1984	Sandsprings, AU	daily rain	31.4 mm (1.2 in)	23.8 mm (0.9 in)	18 years	34 of 100 (Routine)
11 April 1984	Guarapari (Dnos), BR	daily rain	45.0 mm (1.8 in)	36.8 mm (1.4 in)	11 years	34 of 100 (Routine)
11 April 1984	Nashville, US	daily low min	-2.8 C (27.0 F)	1.7 C (3.1 F)	75 years	33 of 100 (Routine)

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

1800 to 1984

Records set or tied on this calendar date in each year from 1800 to 1984. 1984 had 623 records.

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

Records on 04-11 in each year
Year	Records
1800	1
1803	1
1808	1
1809	1
1812	3
1818	1
1831	1
1832	1
1834	1
1837	1
1845	1
1854	1
1857	1
1863	2
1865	2
1866	1
1868	1
1869	3
1871	1
1874	1
1876	2
1879	2
1880	2
1881	1
1882	2
1885	1
1886	1
1887	2
1888	4
1889	2
1890	2
1891	2
1892	3
1894	7
1895	5
1896	3
1898	7
1899	11
1900	6
1901	4
1902	6
1903	13
1904	12
1905	20
1906	19
1907	7
1908	12
1909	30
1910	19
1911	19
1912	47
1913	48
1914	38
1915	127
1916	64
1917	62
1918	43
1919	42
1920	73
1921	32
1922	140
1923	89
1924	169
1925	197
1926	198
1927	156
1928	220
1929	214
1930	761
1931	185
1932	497
1933	481
1934	246
1935	261
1936	175
1937	245
1938	289
1939	611
1940	932
1941	579
1942	301
1943	546
1944	626
1945	890
1946	383
1947	478
1948	921
1949	402
1950	322
1951	623
1952	502
1953	594
1954	392
1955	610
1956	420
1957	508
1958	473
1959	582
1960	469
1961	532
1962	384
1963	450
1964	255
1965	763
1966	599
1967	757
1968	663
1969	353
1970	522
1971	495
1972	792
1973	1,479
1974	982
1975	851
1976	478
1977	1,231
1978	854
1979	977
1980	399
1981	1,036
1982	1,132
1983	1,040
1984	623
1985	952
1986	1,062
1987	440
1988	1,162
1989	1,931
1990	1,347
1991	1,287
1992	978
1993	722
1994	952
1995	2,134
1996	1,182
1997	3,077
1998	916
1999	1,318
2000	667
2001	1,865
2002	568
2003	1,156
2004	888
2005	930
2006	666
2007	962
2008	1,373
2009	1,102
2010	623
2011	1,664
2012	806
2013	1,482
2014	633
2015	399
2016	534
2017	489
2018	795
2019	812
2020	625
2021	892
2022	1,179
2023	1,036
2024	782
2025	1,177
2026	604

Download the Data

Data for records on 1984-04-11: 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 50	496
50 to 100	8
100 to 150	5
150 to 200	1
200 to 250	1