Weather Records on 17 April 2011

982 weather records were set or tied worldwide on 17 April 2011. Highest significance: Carlisle Wtp, US.

Key Facts for 17 April 2011

On 17 April 2011, 982 weather records were set or tied at long-record stations worldwide.
379 were record highs and 170 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 26 monthly and 956 daily.
Carlisle Wtp set a daily record precipitation of 79.0 mm (3.1 in) on 17 April 2011.
Across 166 earlier years (1799 to 2026) the same calendar date averaged 449 records.

Record Map

982 stations

982 station records on 17 April 2011 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 April 2011: highest significance records shown on the map
Station	Country	Type	Value	Significance
Carlisle Wtp	United States	Record daily precipitation	79.0 mm (3.1 in)	62 of 100 (Major)
Hungry Horse Dam	United States	Record daily snowfall	12.7 cm (5.0 in)	60 of 100 (Major)
Biglerville	United States	Record daily precipitation	115.8 mm (4.6 in)	59 of 100 (Notable)
Morrisville 6 SW	United States	Record daily precipitation	41.1 mm (1.6 in)	58 of 100 (Notable)
Mahanoy City 2 N	United States	Record daily precipitation	68.1 mm (2.7 in)	54 of 100 (Notable)
Eide Pa Nordmore	Norway	Record daily precipitation	80.0 mm (3.1 in)	53 of 100 (Notable)
Foster Dam	United States	Record daily precipitation	43.7 mm (1.7 in)	53 of 100 (Notable)
W Chester 2 NW	United States	Record daily precipitation	48.0 mm (1.9 in)	53 of 100 (Notable)
Wertsville 4 NE	United States	Record daily precipitation	78.7 mm (3.1 in)	52 of 100 (Notable)
Great Falls 16St	United States	Record daily snowfall	8.6 cm (3.4 in)	51 of 100 (Notable)
Hinsdale 4 SW	United States	Record daily snowfall	18.0 cm (7.1 in)	51 of 100 (Notable)
Tbilisi	Georgia	Record daily precipitation	30.0 mm (1.2 in)	50 of 100 (Notable)
Wallace 2W	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Solomons	United States	Record daily precipitation	37.6 mm (1.5 in)	49 of 100 (Notable)
Harlem	United States	Record daily snowfall	6.1 cm (2.4 in)	48 of 100 (Notable)
Waukon 3NNE	United States	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Phillipsburg-Easton Brg	United States	Record daily precipitation	70.1 mm (2.8 in)	47 of 100 (Notable)
Eagle Rvr	United States	Record daily snowfall	10.2 cm (4.0 in)	47 of 100 (Notable)
San Francisco de Los Romo (Dg	Mexico	Record low maximum temperature	15.0 C (59.0 F)	46 of 100 (Notable)
Hildre	Norway	Record daily precipitation	36.5 mm (1.4 in)	46 of 100 (Notable)
Raymond Border STN	United States	Record daily precipitation	25.4 mm (1.0 in)	46 of 100 (Notable)
Vigra	Norway	Record daily precipitation	31.4 mm (1.2 in)	45 of 100 (Notable)
Mt Carmel	United States	Record daily precipitation	60.7 mm (2.4 in)	45 of 100 (Notable)
Big Is	United States	Record daily precipitation	49.5 mm (1.9 in)	45 of 100 (Notable)
Sandy Hook	United States	Record daily precipitation	40.1 mm (1.6 in)	44 of 100 (Notable)
Fulton	United States	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Montgomery L&D	United States	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Craigsville 2 S	United States	Record daily precipitation	63.0 mm (2.5 in)	44 of 100 (Notable)
Miller	United States	Record snow depth	10.2 cm (4.0 in)	43 of 100 (Notable)
Pijijiapan	Mexico	Record low maximum temperature	30.0 C (86.0 F)	42 of 100 (Notable)
Saint Helena	United States	Record high minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
W Pt	United States	Record daily precipitation	76.2 mm (3.0 in)	42 of 100 (Notable)
Sunbury	United States	Record daily precipitation	47.8 mm (1.9 in)	42 of 100 (Notable)
Dale Enterprise	United States	Record daily precipitation	48.0 mm (1.9 in)	42 of 100 (Notable)
Ebor (Wongwibinda)	Australia	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Live Oak	United States	Record high maximum temperature	33.3 C (91.9 F)	41 of 100 (Notable)
Wewahitchka	United States	Record low maximum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
York Haven	United States	Record daily precipitation	43.9 mm (1.7 in)	41 of 100 (Notable)
Copper Hill	United States	Record daily precipitation	71.9 mm (2.8 in)	41 of 100 (Notable)
Wisemans Ferry (Old Po)	Australia	Record daily precipitation	39.0 mm (1.5 in)	40 of 100 (Notable)
Afjord - Momyr	Norway	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)
Wanaque Raymond Dam	United States	Record daily precipitation	88.9 mm (3.5 in)	40 of 100 (Notable)
Dobbs Ferry-Ardsley	United States	Record daily precipitation	71.1 mm (2.8 in)	40 of 100 (Notable)
Courtenay 1 NW	United States	Record snow depth	25.4 cm (10.0 in)	40 of 100 (Notable)
Dickinson Exp STN	United States	Record daily snowfall	10.2 cm (4.0 in)	40 of 100 (Notable)
Hawley 1 E	United States	Record daily precipitation	54.1 mm (2.1 in)	40 of 100 (Notable)
Dover 1 W	United States	Record low maximum temperature	8.9 C (48.0 F)	40 of 100 (Notable)
Arthurville (Cramond)	Australia	Record daily precipitation	38.6 mm (1.5 in)	39 of 100 (Notable)
Paterson (Tocal AWS)	Australia	Record daily precipitation	73.1 mm (2.9 in)	38 of 100 (Notable)
Hustadvatn	Norway	Record daily precipitation	39.9 mm (1.6 in)	38 of 100 (Notable)
Ashburnham	United States	Record daily precipitation	39.6 mm (1.6 in)	38 of 100 (Notable)
Freehold-Marlboro	United States	Record daily precipitation	47.5 mm (1.9 in)	38 of 100 (Notable)
Seabrook Farms	United States	Record daily precipitation	45.0 mm (1.8 in)	38 of 100 (Notable)
S Mtn	United States	Record daily precipitation	76.5 mm (3.0 in)	38 of 100 (Notable)
Buena Vista	United States	Record daily precipitation	53.6 mm (2.1 in)	38 of 100 (Notable)
Mt Wx	United States	Record daily precipitation	68.6 mm (2.7 in)	38 of 100 (Notable)
Dismal Swamp	United States	Record daily precipitation	58.4 mm (2.3 in)	38 of 100 (Notable)
Olenja Rechka	Russia	Record high minimum temperature	7.5 C (45.5 F)	37 of 100 (Notable)
Ware	United States	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Lewistown	United States	Record daily precipitation	46.0 mm (1.8 in)	37 of 100 (Notable)

Counts by Type and Timescale

982 records

Records set or tied on 17 April 2011 by type: Highest daily maximum 181, Lowest daily maximum 121, Highest daily minimum 198, Lowest daily minimum 49, Heaviest daily rainfall 354, Heaviest daily snowfall 38, Deepest snow cover 41.

Records on 17 April 2011 by type
Record type	Records
Highest daily maximum	181
Lowest daily maximum	121
Highest daily minimum	198
Lowest daily minimum	49
Heaviest daily rainfall	354
Heaviest daily snowfall	38
Deepest snow cover	41

Records on 17 April 2011 by timescale: all-time 0, monthly 26, daily 956.

How Much Records Were Beaten By

796 broken records

Margins by which the 796 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

17 April 2011

Top 20 records on 17 April 2011 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 April 2011	Carlisle Wtp, US	daily rain	79.0 mm (3.1 in)	35.8 mm (1.4 in)	149 years	62 of 100 (Major)
17 April 2011	Hungry Horse Dam, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	62 years	60 of 100 (Major)
17 April 2011	Biglerville, US	monthly rain	115.8 mm (4.6 in)	45.2 mm (1.8 in)	18 years	59 of 100 (Notable)
17 April 2011	Morrisville 6 SW, US	daily rain	41.1 mm (1.6 in)	22.0 mm (0.9 in)	56 years	58 of 100 (Notable)
17 April 2011	Mahanoy City 2 N, US	daily rain	68.1 mm (2.7 in)	40.2 mm (1.6 in)	38 years	54 of 100 (Notable)
17 April 2011	Eide Pa Nordmore, NO	daily rain	80.0 mm (3.1 in)	54.0 mm (2.1 in)	26 years	53 of 100 (Notable)
17 April 2011	Foster Dam, US	daily rain	43.7 mm (1.7 in)	27.7 mm (1.1 in)	32 years	53 of 100 (Notable)
17 April 2011	W Chester 2 NW, US	daily rain	48.0 mm (1.9 in)	13.7 mm (0.5 in)	100 years	53 of 100 (Notable)
17 April 2011	Wertsville 4 NE, US	daily rain	78.7 mm (3.1 in)	50.3 mm (2.0 in)	24 years	52 of 100 (Notable)
17 April 2011	Great Falls 16St, US	daily snowfall	8.6 cm (3.4 in)	6.6 cm (2.6 in)	90 years	51 of 100 (Notable)
17 April 2011	Hinsdale 4 SW, US	daily snowfall	18.0 cm (7.1 in)	18.0 cm (7.1 in)	38 years	51 of 100 (Notable)
17 April 2011	Tbilisi, GE	daily rain	30.0 mm (1.2 in)	7.3 mm (0.29 in)	127 years	50 of 100 (Notable)
17 April 2011	Wallace 2W, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	60 years	50 of 100 (Notable)
17 April 2011	Solomons, US	daily rain	37.6 mm (1.5 in)	8.9 mm (0.35 in)	100 years	49 of 100 (Notable)
17 April 2011	Harlem, US	daily snowfall	6.1 cm (2.4 in)	6.1 cm (2.4 in)	86 years	48 of 100 (Notable)
17 April 2011	Waukon 3NNE, US	daily snowfall	7.6 cm (3.0 in)	6.6 cm (2.6 in)	72 years	47 of 100 (Notable)
17 April 2011	Phillipsburg-Easton Brg, US	daily rain	70.1 mm (2.8 in)	45.5 mm (1.8 in)	0 years	47 of 100 (Notable)
17 April 2011	Eagle Rvr, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	70 years	47 of 100 (Notable)
17 April 2011	San Francisco de Los Romo (Dg, MX	daily low max	15.0 C (59.0 F)	10.6 C (19.1 F)	21 years	46 of 100 (Notable)
17 April 2011	Hildre, NO	daily rain	36.5 mm (1.4 in)	24.0 mm (0.9 in)	9 years	46 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

1799 to 2011

Records set or tied on this calendar date in each year from 1799 to 2011. 2011 had 982 records.

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

Records on 04-17 in each year
Year	Records
1799	1
1807	1
1808	1
1815	1
1817	1
1818	1
1819	1
1823	1
1825	1
1830	1
1835	3
1837	1
1845	1
1847	2
1851	1
1852	3
1853	1
1854	1
1855	1
1857	1
1858	1
1862	1
1865	2
1868	1
1873	4
1874	1
1875	3
1877	4
1878	2
1880	2
1889	1
1890	2
1891	2
1892	4
1894	5
1895	1
1896	5
1897	6
1898	3
1899	1
1900	2
1901	4
1902	4
1903	5
1904	19
1905	11
1906	14
1907	16
1908	38
1909	7
1910	29
1911	33
1912	27
1913	20
1914	83
1915	30
1916	30
1917	32
1918	35
1919	39
1920	87
1921	148
1922	96
1923	71
1924	74
1925	103
1926	140
1927	256
1928	308
1929	145
1930	238
1931	216
1932	615
1933	261
1934	234
1935	374
1936	308
1937	439
1938	564
1939	618
1940	337
1941	460
1942	415
1943	285
1944	334
1945	475
1946	492
1947	461
1948	622
1949	439
1950	293
1951	441
1952	529
1953	818
1954	650
1955	394
1956	486
1957	277
1958	702
1959	434
1960	553
1961	667
1962	597
1963	702
1964	766
1965	411
1966	409
1967	935
1968	745
1969	728
1970	547
1971	924
1972	546
1973	589
1974	244
1975	666
1976	1,630
1977	906
1978	620
1979	810
1980	675
1981	621
1982	965
1983	1,365
1984	720
1985	917
1986	997
1987	960
1988	1,082
1989	638
1990	1,065
1991	614
1992	1,105
1993	847
1994	1,047
1995	1,211
1996	1,044
1997	889
1998	1,795
1999	1,730
2000	1,082
2001	1,013
2002	2,284
2003	1,037
2004	761
2005	572
2006	1,430
2007	863
2008	842
2009	779
2010	606
2011	982
2012	920
2013	1,796
2014	913
2015	813
2016	977
2017	469
2018	1,585
2019	458
2020	1,165
2021	701
2022	831
2023	628
2024	690
2025	1,058
2026	838

Download the Data

Data for records on 2011-04-17: 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	763
50 to 100	21
100 to 150	7
150 to 200	3
200 to 250	2