Weather Records on 11 April 1947

478 weather records were set or tied worldwide on 11 April 1947. Highest significance: Carrollton Lock 1, US.

Key Facts for 11 April 1947

On 11 April 1947, 478 weather records were set or tied at long-record stations worldwide.
123 were record highs and 20 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 15 monthly and 461 daily.
Carrollton Lock 1 set an all-time record daily precipitation of 210.8 mm (8.3 in) on 11 April 1947.
Across 164 earlier years (1800 to 2026) the same calendar date averaged 481 records.

Record Map

478 stations

478 station records on 11 April 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 April 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Carrollton Lock 1	United States	Record daily precipitation	210.8 mm (8.3 in)	72 of 100 (Major)
Queen Charlotte City	Canada	Record daily precipitation	73.7 mm (2.9 in)	57 of 100 (Notable)
Morekulam	India	Record daily precipitation	102.1 mm (4.0 in)	52 of 100 (Notable)
Pamban	India	Record daily precipitation	67.1 mm (2.6 in)	49 of 100 (Notable)
North Lakhimpur	India	Record daily precipitation	97.8 mm (3.9 in)	47 of 100 (Notable)
Ashland Exp Farm	United States	Record daily precipitation	36.8 mm (1.4 in)	47 of 100 (Notable)
Marayur	India	Record daily precipitation	72.4 mm (2.9 in)	45 of 100 (Notable)
Holly Bluff	United States	Record daily precipitation	143.8 mm (5.7 in)	45 of 100 (Notable)
Mount Templeton (Glenalbyn)	Australia	Record daily precipitation	25.7 mm (1.0 in)	44 of 100 (Notable)
White River	Canada	Record daily snowfall	28.4 cm (11.2 in)	43 of 100 (Notable)
Dhakuakhana	India	Record daily precipitation	76.2 mm (3.0 in)	42 of 100 (Notable)
Grenada	United States	Record daily precipitation	123.4 mm (4.9 in)	41 of 100 (Notable)
Franklinton	United States	Record daily precipitation	185.4 mm (7.3 in)	40 of 100 (Notable)
Drouin West	Australia	Record daily precipitation	39.6 mm (1.6 in)	39 of 100 (Notable)
Barrage Gouin	Canada	Record daily snowfall	11.4 cm (4.5 in)	39 of 100 (Notable)
Cochrane	Canada	Record daily snowfall	17.0 cm (6.7 in)	38 of 100 (Notable)
Barrage Gouin	Canada	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Kadayanallur	India	Record daily precipitation	125.2 mm (4.9 in)	37 of 100 (Notable)
White River	Canada	Record daily precipitation	28.4 mm (1.1 in)	36 of 100 (Notable)
Cranganore	India	Record daily precipitation	71.1 mm (2.8 in)	36 of 100 (Notable)
Newport	United States	Record daily precipitation	83.8 mm (3.3 in)	36 of 100 (Notable)
Virginia	United States	Record daily snowfall	24.1 cm (9.5 in)	36 of 100 (Notable)
Tiruchendur	India	Record daily precipitation	134.6 mm (5.3 in)	35 of 100 (Notable)
Duck Hill	United States	Record daily precipitation	156.2 mm (6.1 in)	35 of 100 (Notable)
University	United States	Record daily precipitation	82.3 mm (3.2 in)	35 of 100 (Notable)
Levy	United States	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Regina Int'l A	Canada	Record daily snowfall	6.1 cm (2.4 in)	34 of 100 (Routine)
Haileybury	Canada	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Searcy	United States	Record daily precipitation	62.5 mm (2.5 in)	34 of 100 (Routine)
Ashland	United States	Record daily precipitation	54.6 mm (2.1 in)	33 of 100 (Routine)
Moa Island Mission	Australia	Record daily precipitation	122.9 mm (4.8 in)	32 of 100 (Routine)
Palayankottai	India	Record daily precipitation	53.3 mm (2.1 in)	32 of 100 (Routine)
Columbia	United States	Record daily precipitation	103.4 mm (4.1 in)	32 of 100 (Routine)
Moorhead	United States	Record daily precipitation	96.5 mm (3.8 in)	32 of 100 (Routine)
Prince Rupert	Canada	Record daily precipitation	54.6 mm (2.1 in)	31 of 100 (Routine)
Quebec	Canada	Record daily precipitation	46.0 mm (1.8 in)	31 of 100 (Routine)
La Tuque	Canada	Record daily precipitation	36.1 mm (1.4 in)	31 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record daily snowfall	15.2 cm (6.0 in)	30 of 100 (Routine)
Brockville	Canada	Record high minimum temperature	9.4 C (48.9 F)	30 of 100 (Routine)
Jeffersonville	United States	Record daily precipitation	43.9 mm (1.7 in)	30 of 100 (Routine)
Cheneyville 1 NE	United States	Record daily precipitation	104.6 mm (4.1 in)	30 of 100 (Routine)
Natchez	United States	Record daily precipitation	74.2 mm (2.9 in)	30 of 100 (Routine)
Kenogami	Canada	Record daily precipitation	40.9 mm (1.6 in)	29 of 100 (Routine)
Stuttgart	United States	Record daily precipitation	59.7 mm (2.4 in)	29 of 100 (Routine)
Greenville	United States	Record daily precipitation	79.0 mm (3.1 in)	28 of 100 (Routine)
Grand Coteau	United States	Record daily precipitation	63.5 mm (2.5 in)	27 of 100 (Routine)
Hammond	United States	Record daily precipitation	104.6 mm (4.1 in)	27 of 100 (Routine)
Tallulah	United States	Record daily precipitation	77.2 mm (3.0 in)	27 of 100 (Routine)
Cincinnati Sus Brg	United States	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Stewart	Canada	Record daily snowfall	7.6 cm (3.0 in)	25 of 100 (Routine)
Jeanerette 5 NW	United States	Record daily precipitation	68.6 mm (2.7 in)	25 of 100 (Routine)
Reserve	United States	Record daily precipitation	45.5 mm (1.8 in)	25 of 100 (Routine)
Pontotoc	United States	Record daily precipitation	76.2 mm (3.0 in)	25 of 100 (Routine)
Stoneville Exp STN	United States	Record daily precipitation	91.4 mm (3.6 in)	25 of 100 (Routine)
Setauket Strong	United States	Record high maximum temperature	24.4 C (75.9 F)	25 of 100 (Routine)
Covington 3 SW	United States	Record daily precipitation	53.3 mm (2.1 in)	25 of 100 (Routine)
Paravur	India	Record daily precipitation	56.9 mm (2.2 in)	24 of 100 (Routine)
Osceola	United States	Record daily precipitation	39.6 mm (1.6 in)	24 of 100 (Routine)
Avon	United States	Record high minimum temperature	12.2 C (54.0 F)	24 of 100 (Routine)
Farrell Sharon	United States	Record high minimum temperature	16.1 C (61.0 F)	24 of 100 (Routine)

Counts by Type and Timescale

478 records

Records set or tied on 11 April 1947 by type: Highest daily maximum 18, Lowest daily maximum 9, Highest daily minimum 105, Lowest daily minimum 11, Heaviest daily rainfall 312, Heaviest daily snowfall 20, Deepest snow cover 3.

Records on 11 April 1947 by type
Record type	Records
Highest daily maximum	18
Lowest daily maximum	9
Highest daily minimum	105
Lowest daily minimum	11
Heaviest daily rainfall	312
Heaviest daily snowfall	20
Deepest snow cover	3

Records on 11 April 1947 by timescale: all-time 2, monthly 15, daily 461.

How Much Records Were Beaten By

401 broken records

Margins by which the 401 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 157.0. Ties are not counted.

Top 20 by Significance

11 April 1947

Top 20 records on 11 April 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 April 1947	Carrollton Lock 1, US	all-time rain	210.8 mm (8.3 in)	79.7 mm (3.1 in)	25 years	72 of 100 (Major)
11 April 1947	Queen Charlotte City, CA	monthly rain	73.7 mm (2.9 in)	24.2 mm (1.0 in)	30 years	57 of 100 (Notable)
11 April 1947	Morekulam, IN	daily rain	102.1 mm (4.0 in)	69.8 mm (2.7 in)	28 years	52 of 100 (Notable)
11 April 1947	Pamban, IN	daily rain	67.1 mm (2.6 in)	54.4 mm (2.1 in)	28 years	49 of 100 (Notable)
11 April 1947	North Lakhimpur, IN	daily rain	97.8 mm (3.9 in)	56.9 mm (2.2 in)	32 years	47 of 100 (Notable)
11 April 1947	Ashland Exp Farm, US	daily rain	36.8 mm (1.4 in)	20.8 mm (0.8 in)	53 years	47 of 100 (Notable)
11 April 1947	Marayur, IN	daily rain	72.4 mm (2.9 in)	48.3 mm (1.9 in)	13 years	45 of 100 (Notable)
11 April 1947	Holly Bluff, US	monthly rain	143.8 mm (5.7 in)	47.0 mm (1.9 in)	27 years	45 of 100 (Notable)
11 April 1947	Mount Templeton (Glenalbyn), AU	daily rain	25.7 mm (1.0 in)	14.5 mm (0.6 in)	32 years	44 of 100 (Notable)
11 April 1947	White River, CA	daily snowfall	28.4 cm (11.2 in)	15.7 cm (6.2 in)	8 years	43 of 100 (Notable)
11 April 1947	Dhakuakhana, IN	daily rain	76.2 mm (3.0 in)	45.2 mm (1.8 in)	42 years	42 of 100 (Notable)
11 April 1947	Grenada, US	daily rain	123.4 mm (4.9 in)	79.2 mm (3.1 in)	2 years	41 of 100 (Notable)
11 April 1947	Franklinton, US	monthly rain	185.4 mm (7.3 in)	38.1 mm (1.5 in)	34 years	40 of 100 (Notable)
11 April 1947	Drouin West, AU	daily rain	39.6 mm (1.6 in)	20.8 mm (0.8 in)	32 years	39 of 100 (Notable)
11 April 1947	Barrage Gouin, CA	daily snowfall	11.4 cm (4.5 in)	11.4 cm (4.5 in)	32 years	39 of 100 (Notable)
11 April 1947	Cochrane, CA	daily snowfall	17.0 cm (6.7 in)	9.4 cm (3.7 in)	26 years	38 of 100 (Notable)
11 April 1947	Barrage Gouin, CA	daily rain	25.4 mm (1.0 in)	16.8 mm (0.7 in)	8 years	38 of 100 (Notable)
11 April 1947	Kadayanallur, IN	monthly rain	125.2 mm (4.9 in)	27.7 mm (1.1 in)	19 years	37 of 100 (Notable)
11 April 1947	White River, CA	daily rain	28.4 mm (1.1 in)	15.7 mm (0.6 in)	8 years	36 of 100 (Notable)
11 April 1947	Cranganore, IN	daily rain	71.1 mm (2.8 in)	52.3 mm (2.1 in)	13 years	36 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

1800 to 1947

Records set or tied on this calendar date in each year from 1800 to 1947. 1947 had 478 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 1947-04-11: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	343
20 to 40	29
40 to 60	17
60 to 80	7
80 to 100	2
100 to 120	2
120 to 140	0
140 to 160	1