Weather Records on 30 April 2011

636 weather records were set or tied worldwide on 30 April 2011. Highest significance: Sidney, US.

Key Facts for 30 April 2011

On 30 April 2011, 636 weather records were set or tied at long-record stations worldwide.
293 were record highs and 179 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 36 monthly and 597 daily.
Sidney set a daily record precipitation of 40.6 mm (1.6 in) on 30 April 2011.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 446 records.

Record Map

636 stations

636 station records on 30 April 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sidney	United States	Record daily precipitation	40.6 mm (1.6 in)	67 of 100 (Major)
Byron Bay (Jacaranda Drive)	Australia	Record daily precipitation	179.4 mm (7.1 in)	66 of 100 (Major)
Crosby	United States	Record daily snowfall	25.4 cm (10.0 in)	66 of 100 (Major)
Williston Sloulin Fld	United States	Record daily snowfall	20.1 cm (7.9 in)	63 of 100 (Major)
Sidney	United States	Record daily snowfall	20.3 cm (8.0 in)	61 of 100 (Major)
Trotters 3 SSE	United States	Record daily precipitation	35.6 mm (1.4 in)	58 of 100 (Notable)
Wibaux 2 E	United States	Record daily snowfall	25.4 cm (10.0 in)	57 of 100 (Notable)
Abu Hamed	Sudan	Record daily precipitation	70.1 mm (2.8 in)	54 of 100 (Notable)
Lastovo	Croatia	Record daily precipitation	41.8 mm (1.6 in)	53 of 100 (Notable)
Grafton Olympic Pool	Australia	Record daily precipitation	76.0 mm (3.0 in)	52 of 100 (Notable)
Gabes	Tunisia	Record high minimum temperature	22.0 C (71.6 F)	52 of 100 (Notable)
Marrickville Golf Club	Australia	Record daily precipitation	36.0 mm (1.4 in)	51 of 100 (Notable)
Saint Anthony	United States	Record daily snowfall	5.1 cm (2.0 in)	47 of 100 (Notable)
Keene 3S	United States	Record daily precipitation	34.3 mm (1.4 in)	47 of 100 (Notable)
Crosby	United States	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Williston Exp Farm	United States	Record daily snowfall	17.8 cm (7.0 in)	46 of 100 (Notable)
Incheon	Korea, South	Record daily precipitation	95.0 mm (3.7 in)	45 of 100 (Notable)
Nadym	Russia	Record daily precipitation	27.2 mm (1.1 in)	45 of 100 (Notable)
Savage	United States	Record daily snowfall	7.6 cm (3.0 in)	44 of 100 (Notable)
Williston Exp Farm	United States	Record daily precipitation	27.9 mm (1.1 in)	44 of 100 (Notable)
Port Sudan	Sudan	Record daily precipitation	70.1 mm (2.8 in)	43 of 100 (Notable)
Lovelock	United States	Record low minimum temperature	-7.8 C (18.0 F)	43 of 100 (Notable)
Fortuna 1 W	United States	Record daily snowfall	25.4 cm (10.0 in)	43 of 100 (Notable)
Plainview	United States	Record high maximum temperature	35.6 C (96.1 F)	43 of 100 (Notable)
Moanalua 770	United States	Record daily precipitation	51.8 mm (2.0 in)	43 of 100 (Notable)
Grace	United States	Record low minimum temperature	-7.8 C (18.0 F)	41 of 100 (Notable)
Kellogg	United States	Record low maximum temperature	6.1 C (43.0 F)	41 of 100 (Notable)
Elk	United States	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Hereford	United States	Record high maximum temperature	34.4 C (93.9 F)	41 of 100 (Notable)
Provo Byu	United States	Record low maximum temperature	8.3 C (46.9 F)	41 of 100 (Notable)
Grand Junction Walker Fld	United States	Record low minimum temperature	-2.8 C (27.0 F)	41 of 100 (Notable)
Watford City	United States	Record snow depth	17.8 cm (7.0 in)	40 of 100 (Notable)
Ludlow 3 SSE	United States	Record daily snowfall	7.6 cm (3.0 in)	40 of 100 (Notable)
Jaral de Berrios	Mexico	Record high maximum temperature	40.0 C (104.0 F)	39 of 100 (Notable)
Wibaux 2 E	United States	Record snow depth	20.3 cm (8.0 in)	39 of 100 (Notable)
Xenia 6 SSE	United States	Record high maximum temperature	32.2 C (90.0 F)	39 of 100 (Notable)
Kassala	Sudan	Record daily precipitation	59.9 mm (2.4 in)	38 of 100 (Notable)
Sidney	United States	Record snow depth	20.3 cm (8.0 in)	38 of 100 (Notable)
Rye Patch Dam	United States	Record low minimum temperature	-9.4 C (15.1 F)	38 of 100 (Notable)
Brackettville	United States	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Imlay	United States	Record low minimum temperature	-7.8 C (18.0 F)	37 of 100 (Notable)
Crosby	United States	Record snow depth	25.4 cm (10.0 in)	37 of 100 (Notable)
Watford City	United States	Record daily snowfall	18.0 cm (7.1 in)	37 of 100 (Notable)
Carnegie	Australia	Record daily precipitation	32.3 mm (1.3 in)	36 of 100 (Notable)
Paradise	United States	Record high maximum temperature	28.9 C (84.0 F)	36 of 100 (Notable)
Dunn Ctr 1E	United States	Record daily snowfall	10.2 cm (4.0 in)	36 of 100 (Notable)
Nanjing	China	Record high minimum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
San Luis Acatlan	Mexico	Record low maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Ridgeway 1 S	United States	Record daily precipitation	38.1 mm (1.5 in)	34 of 100 (Routine)
Garrison	United States	Record daily snowfall	6.4 cm (2.5 in)	34 of 100 (Routine)
Bay City Wtr Wks	United States	Record high maximum temperature	33.3 C (91.9 F)	34 of 100 (Routine)
Sandusky	United States	Record daily precipitation	32.5 mm (1.3 in)	34 of 100 (Routine)
Clarendon	United States	Record high maximum temperature	36.7 C (98.1 F)	34 of 100 (Routine)
Yamba Pilot Station	Australia	Record daily precipitation	60.0 mm (2.4 in)	33 of 100 (Routine)
Hefei	China	Record high minimum temperature	24.9 C (76.8 F)	33 of 100 (Routine)
Columbus	United States	Record high maximum temperature	37.2 C (99.0 F)	33 of 100 (Routine)
Muleshoe #1	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Guanghua	China	Record high minimum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Tequisistlan	Mexico	Record high maximum temperature	40.0 C (104.0 F)	32 of 100 (Routine)
Woodland 1 WNW	United States	Record low maximum temperature	15.0 C (59.0 F)	32 of 100 (Routine)

Counts by Type and Timescale

636 records

Records set or tied on 30 April 2011 by type: Highest daily maximum 176, Lowest daily maximum 91, Highest daily minimum 117, Lowest daily minimum 88, Heaviest daily rainfall 106, Heaviest daily snowfall 35, Deepest snow cover 23.

Records on 30 April 2011 by type
Record type	Records
Highest daily maximum	176
Lowest daily maximum	91
Highest daily minimum	117
Lowest daily minimum	88
Heaviest daily rainfall	106
Heaviest daily snowfall	35
Deepest snow cover	23

Records on 30 April 2011 by timescale: all-time 3, monthly 36, daily 597.

How Much Records Were Beaten By

441 broken records

Margins by which the 441 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 610.0. Ties are not counted.

Top 20 by Significance

30 April 2011

Top 20 records on 30 April 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 2011	Sidney, US	daily rain	40.6 mm (1.6 in)	26.9 mm (1.1 in)	57 years	67 of 100 (Major)
30 April 2011	Byron Bay (Jacaranda Drive), AU	daily rain	179.4 mm (7.1 in)	122.8 mm (4.8 in)	56 years	66 of 100 (Major)
30 April 2011	Crosby, US	daily snowfall	25.4 cm (10.0 in)	24.1 cm (9.5 in)	54 years	66 of 100 (Major)
30 April 2011	Williston Sloulin Fld, US	daily snowfall	20.1 cm (7.9 in)	18.1 cm (7.1 in)	57 years	63 of 100 (Major)
30 April 2011	Sidney, US	daily snowfall	20.3 cm (8.0 in)	16.5 cm (6.5 in)	60 years	61 of 100 (Major)
30 April 2011	Trotters 3 SSE, US	daily rain	35.6 mm (1.4 in)	19.1 mm (0.8 in)	60 years	58 of 100 (Notable)
30 April 2011	Wibaux 2 E, US	daily snowfall	25.4 cm (10.0 in)	20.3 cm (8.0 in)	44 years	57 of 100 (Notable)
30 April 2011	Abu Hamed, SD	daily rain	70.1 mm (2.8 in)	68.1 mm (2.7 in)	32 years	54 of 100 (Notable)
30 April 2011	Lastovo, HR	daily rain	41.8 mm (1.6 in)	26.1 mm (1.0 in)	28 years	53 of 100 (Notable)
30 April 2011	Grafton Olympic Pool, AU	daily rain	76.0 mm (3.0 in)	60.6 mm (2.4 in)	28 years	52 of 100 (Notable)
30 April 2011	Gabes, TN	monthly high min	22.0 C (71.6 F)	0.7 C (1.3 F)	123 years	52 of 100 (Notable)
30 April 2011	Marrickville Golf Club, AU	daily rain	36.0 mm (1.4 in)	20.8 mm (0.8 in)	98 years	51 of 100 (Notable)
30 April 2011	Saint Anthony, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	70 years	47 of 100 (Notable)
30 April 2011	Keene 3S, US	daily rain	34.3 mm (1.4 in)	17.5 mm (0.7 in)	57 years	47 of 100 (Notable)
30 April 2011	Crosby, US	daily rain	33.0 mm (1.3 in)	10.6 mm (0.4 in)	62 years	46 of 100 (Notable)
30 April 2011	Williston Exp Farm, US	daily snowfall	17.8 cm (7.0 in)	16.5 cm (6.5 in)	44 years	46 of 100 (Notable)
30 April 2011	Incheon, KR	daily rain	95.0 mm (3.7 in)	52.3 mm (2.1 in)	8 years	45 of 100 (Notable)
30 April 2011	Nadym, RU	monthly rain	27.2 mm (1.1 in)	7.3 mm (0.29 in)	2 years	45 of 100 (Notable)
30 April 2011	Savage, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	61 years	44 of 100 (Notable)
30 April 2011	Williston Exp Farm, US	daily rain	27.9 mm (1.1 in)	21.5 mm (0.8 in)	0 years	44 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

1795 to 2011

Records set or tied on this calendar date in each year from 1795 to 2011. 2011 had 636 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 2011-04-30: 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	425
100 to 200	12
200 to 300	2
300 to 400	1
400 to 500	0
500 to 600	0
600 to 700	1