Weather Records on 30 April 2017

1,450 weather records were set or tied worldwide on 30 April 2017. Highest significance: Lankaran, AZ.

Key Facts for 30 April 2017

On 30 April 2017, 1,450 weather records were set or tied at long-record stations worldwide.
574 were record highs and 344 were record lows, counting maximum and minimum temperature.
By timescale, 12 were all-time records, 197 monthly and 1,241 daily.
Lankaran set a monthly record daily precipitation of 99.1 mm (3.9 in) on 30 April 2017.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 441 records.

Record Map

1,450 stations

1,450 station records on 30 April 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lankaran	Azerbaijan	Record daily precipitation	99.1 mm (3.9 in)	84 of 100 (Exceptional)
W Plains	United States	Record daily precipitation	196.9 mm (7.8 in)	84 of 100 (Exceptional)
Hugoton	United States	Record daily snowfall	38.1 cm (15.0 in)	83 of 100 (Exceptional)
Ottawa 4SW	United States	Record daily precipitation	114.3 mm (4.5 in)	80 of 100 (Exceptional)
Scott City	United States	Record daily snowfall	22.9 cm (9.0 in)	80 of 100 (Exceptional)
Mansfield	United States	Record daily precipitation	152.4 mm (6.0 in)	79 of 100 (Major)
Marshfield 4 WSW	United States	Record daily precipitation	138.9 mm (5.5 in)	77 of 100 (Major)
Hugoton	United States	Record snow depth	38.1 cm (15.0 in)	75 of 100 (Major)
Ulysses 3NE	United States	Record daily snowfall	27.9 cm (11.0 in)	75 of 100 (Major)
Alton - Melvin Price L&D	United States	Record daily precipitation	83.3 mm (3.3 in)	71 of 100 (Major)
Scott City	United States	Record snow depth	38.1 cm (15.0 in)	71 of 100 (Major)
Ewing	United States	Record daily snowfall	22.9 cm (9.0 in)	71 of 100 (Major)
Holly	United States	Record daily snowfall	17.8 cm (7.0 in)	70 of 100 (Major)
St Charles Elm Pt	United States	Record daily precipitation	90.2 mm (3.6 in)	70 of 100 (Major)
Philo	United States	Record daily precipitation	49.0 mm (1.9 in)	69 of 100 (Major)
Collyer 10 S	United States	Record daily snowfall	20.3 cm (8.0 in)	69 of 100 (Major)
Alexander	United States	Record daily precipitation	55.4 mm (2.2 in)	68 of 100 (Major)
Pasamonte	United States	Record snow depth	10.2 cm (4.0 in)	68 of 100 (Major)
Richfield 10 WSW	United States	Record snow depth	25.4 cm (10.0 in)	67 of 100 (Major)
Buffalo 2N	United States	Record daily precipitation	128.5 mm (5.1 in)	67 of 100 (Major)
Edwardsville 2 W	United States	Record daily precipitation	85.9 mm (3.4 in)	66 of 100 (Major)
Cimarron	United States	Record daily snowfall	14.0 cm (5.5 in)	66 of 100 (Major)
Eldon	United States	Record daily precipitation	152.7 mm (6.0 in)	66 of 100 (Major)
Tribune 1W	United States	Record daily snowfall	25.4 cm (10.0 in)	65 of 100 (Major)
Bowling Green 1 E	United States	Record daily precipitation	117.1 mm (4.6 in)	65 of 100 (Major)
Farmington	United States	Record daily precipitation	121.4 mm (4.8 in)	65 of 100 (Major)
Stanley 2 NNE	United States	Record daily snowfall	17.0 cm (6.7 in)	64 of 100 (Major)
Tribune 1W	United States	Record snow depth	25.4 cm (10.0 in)	63 of 100 (Major)
Ewing	United States	Record daily precipitation	61.0 mm (2.4 in)	63 of 100 (Major)
Conway	United States	Record daily precipitation	147.1 mm (5.8 in)	62 of 100 (Major)
Effingham 3SW	United States	Record daily precipitation	63.2 mm (2.5 in)	62 of 100 (Major)
Steffenville	United States	Record daily precipitation	60.2 mm (2.4 in)	62 of 100 (Major)
Dalhart FAA AP	United States	Record daily snowfall	22.9 cm (9.0 in)	62 of 100 (Major)
Lamar	United States	Record snow depth	12.7 cm (5.0 in)	61 of 100 (Major)
Concordia	United States	Record daily precipitation	101.9 mm (4.0 in)	61 of 100 (Major)
De Soto	United States	Record daily precipitation	97.0 mm (3.8 in)	61 of 100 (Major)
Poplar Bluff	United States	Record daily precipitation	90.9 mm (3.6 in)	61 of 100 (Major)
Salem	United States	Record daily precipitation	132.1 mm (5.2 in)	61 of 100 (Major)
Sweet Springs	United States	Record daily precipitation	99.8 mm (3.9 in)	61 of 100 (Major)
Kula Hospital 267	United States	Record daily precipitation	164.1 mm (6.5 in)	61 of 100 (Major)
Quinter	United States	Record daily snowfall	11.4 cm (4.5 in)	60 of 100 (Major)
Quinter	United States	Record snow depth	12.7 cm (5.0 in)	60 of 100 (Major)
Bolivar 1 NE	United States	Record daily precipitation	117.1 mm (4.6 in)	60 of 100 (Major)
Shelbina	United States	Record daily precipitation	71.4 mm (2.8 in)	60 of 100 (Major)
Tecumseh 1W	United States	Record daily precipitation	215.9 mm (8.5 in)	60 of 100 (Major)
Hoxie	United States	Record snow depth	30.5 cm (12.0 in)	59 of 100 (Notable)
Atwood 8SSE	United States	Record daily snowfall	38.1 cm (15.0 in)	58 of 100 (Notable)
Hoxie	United States	Record daily snowfall	30.5 cm (12.0 in)	58 of 100 (Notable)
Ulysses 3NE	United States	Record daily precipitation	59.4 mm (2.3 in)	58 of 100 (Notable)
Hopper	United States	Record daily precipitation	188.7 mm (7.4 in)	57 of 100 (Notable)
Hoxie	United States	Record daily precipitation	67.3 mm (2.6 in)	57 of 100 (Notable)
Estancia 4N	United States	Record low maximum temperature	1.7 C (35.1 F)	57 of 100 (Notable)
San Jon	United States	Record daily snowfall	10.2 cm (4.0 in)	57 of 100 (Notable)
Morris 1NW	United States	Record daily precipitation	90.4 mm (3.6 in)	56 of 100 (Notable)
Liberal	United States	Record daily snowfall	10.2 cm (4.0 in)	56 of 100 (Notable)
Tucumcari 4 NE	United States	Record daily snowfall	14.0 cm (5.5 in)	56 of 100 (Notable)
Searcy	United States	Record daily precipitation	129.0 mm (5.1 in)	55 of 100 (Notable)
Havana	United States	Record daily precipitation	94.2 mm (3.7 in)	55 of 100 (Notable)
Macomb	United States	Record daily precipitation	48.8 mm (1.9 in)	55 of 100 (Notable)
Rockville	United States	Record daily precipitation	46.5 mm (1.8 in)	55 of 100 (Notable)

Counts by Type and Timescale

1,450 records

Records set or tied on 30 April 2017 by type: Highest daily maximum 152, Lowest daily maximum 191, Highest daily minimum 422, Lowest daily minimum 153, Heaviest daily rainfall 400, Heaviest daily snowfall 65, Deepest snow cover 67.

Records on 30 April 2017 by type
Record type	Records
Highest daily maximum	152
Lowest daily maximum	191
Highest daily minimum	422
Lowest daily minimum	153
Heaviest daily rainfall	400
Heaviest daily snowfall	65
Deepest snow cover	67

Records on 30 April 2017 by timescale: all-time 12, monthly 197, daily 1,241.

How Much Records Were Beaten By

1,147 broken records

Margins by which the 1,147 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 305.0. Ties are not counted.

Top 20 by Significance

30 April 2017

Top 20 records on 30 April 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 2017	Lankaran, AZ	monthly rain	99.1 mm (3.9 in)	55.1 mm (2.2 in)	83 years	84 of 100 (Exceptional)
30 April 2017	W Plains, US	all-time rain	196.9 mm (7.8 in)	61.0 mm (2.4 in)	60 years	84 of 100 (Exceptional)
30 April 2017	Hugoton, US	monthly snowfall	38.1 cm (15.0 in)	21.6 cm (8.5 in)	77 years	83 of 100 (Exceptional)
30 April 2017	Ottawa 4SW, US	monthly rain	114.3 mm (4.5 in)	42.9 mm (1.7 in)	67 years	80 of 100 (Exceptional)
30 April 2017	Scott City, US	daily snowfall	22.9 cm (9.0 in)	22.9 cm (9.0 in)	116 years	80 of 100 (Exceptional)
30 April 2017	Mansfield, US	monthly rain	152.4 mm (6.0 in)	65.3 mm (2.6 in)	66 years	79 of 100 (Major)
30 April 2017	Marshfield 4 WSW, US	monthly rain	138.9 mm (5.5 in)	48.2 mm (1.9 in)	70 years	77 of 100 (Major)
30 April 2017	Hugoton, US	monthly snow depth	38.1 cm (15.0 in)	25.4 cm (10.0 in)	110 years	75 of 100 (Major)
30 April 2017	Ulysses 3NE, US	daily snowfall	27.9 cm (11.0 in)	22.8 cm (9.0 in)	110 years	75 of 100 (Major)
30 April 2017	Alton - Melvin Price L&D, US	daily rain	83.3 mm (3.3 in)	46.2 mm (1.8 in)	123 years	71 of 100 (Major)
30 April 2017	Scott City, US	monthly snow depth	38.1 cm (15.0 in)	12.7 cm (5.0 in)	98 years	71 of 100 (Major)
30 April 2017	Ewing, US	daily snowfall	22.9 cm (9.0 in)	17.8 cm (7.0 in)	106 years	71 of 100 (Major)
30 April 2017	Holly, US	daily snowfall	17.8 cm (7.0 in)	17.8 cm (7.0 in)	122 years	70 of 100 (Major)
30 April 2017	St Charles Elm Pt, US	daily rain	90.2 mm (3.6 in)	48.3 mm (1.9 in)	70 years	70 of 100 (Major)
30 April 2017	Philo, US	daily rain	49.0 mm (1.9 in)	29.9 mm (1.2 in)	122 years	69 of 100 (Major)
30 April 2017	Collyer 10 S, US	daily snowfall	20.3 cm (8.0 in)	20.3 cm (8.0 in)	76 years	69 of 100 (Major)
30 April 2017	Alexander, US	daily rain	55.4 mm (2.2 in)	38.6 mm (1.5 in)	72 years	68 of 100 (Major)
30 April 2017	Pasamonte, US	daily snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	68 years	68 of 100 (Major)
30 April 2017	Richfield 10 WSW, US	daily snow depth	25.4 cm (10.0 in)	25.4 cm (10.0 in)	68 years	67 of 100 (Major)
30 April 2017	Buffalo 2N, US	monthly rain	128.5 mm (5.1 in)	37.3 mm (1.5 in)	76 years	67 of 100 (Major)

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 2017

Records set or tied on this calendar date in each year from 1795 to 2017. 2017 had 1,450 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 2017-04-30: 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 50	1,046
50 to 100	45
100 to 150	33
150 to 200	10
200 to 250	6
250 to 300	5
300 to 350	2