1956 Soviet nuclear tests

1956
1956
Information
Country	Soviet Union
Test site	Ground Zero, Semipalatinsk, Kazakhstan; Kyzylorda, Kazakhstan
Period	1956
Number of tests	9
Test type	air drop, dry surface, high alt rocket (30–80 km), tower
Max. yield	900 kilotonnes of TNT (3,800 TJ)
Test series chronology

The Soviet Union's 1956 nuclear test series was a group of 9 nuclear tests conducted in 1956. These tests followed the 1955 Soviet nuclear tests series and preceded the 1957 Soviet nuclear tests series.

Soviet Union's 1956 series tests and detonations
Name	Date time (UT)	Local time zone	Location	Elevation + height	Delivery, Purpose	Device	Yield	Notes
25 Baykal (Joe 20)	2 February 1956	KIZT (5 hrs)	Launch from Kapustin Yar, Astrakhan 48.56956°N 45.90346°E / 48.56956; 45.90346 (Launch_25 Baykal (Joe 20)), elv: 0 + 0 m (0 + 0 ft); Detonation over Kyzylorda, Kazakhstan 47.984°N 62.011°E / 47.984; 62.011 (25 Baykal (Joe 20))	N/A + 0	high alt rocket (30–80 km), weapon effect		300 t	Full-scale test of R-5M rocket launched in Kapustin Yar, targeted near Priaralsk Karakum, Kazakhstan. A fizzle.
26 (Joe 21)	16 March 1956 05:00:??	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan ~ 50.4°N 77.8°E / 50.4; 77.8 (26 (Joe 21))	280 m (920 ft) + 0	dry surface, weapons development		14 kt
27 (Joe 22)	25 March 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan ~ 50.4°N 77.8°E / 50.4; 77.8 (27 (Joe 22))	280 m (920 ft) + 1 m (3 ft 3 in)	dry surface, weapons development		5.5 kt
28 (Joe 23)	24 August 1956 00:15:??	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan 50.456°N 77.773°E / 50.456; 77.773 (28 (Joe 23))	280 m (920 ft) + 93 m (305 ft)	tower, weapons development		27 kt
29 (Joe 24)	30 August 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan 50.42°N 77.78°E / 50.42; 77.78 (29 (Joe 24))	280 m (920 ft) + 1,100 m (3,600 ft)	air drop, weapons development	TN	900 kt
30 (Joe 25)	2 September 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan ~ 50.4°N 77.8°E / 50.4; 77.8 (30 (Joe 25))	280 m (920 ft) + 1,050 m (3,440 ft)	air drop, weapons development		51 kt
31 (Joe 26)	10 September 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan ~ 50.4°N 77.8°E / 50.4; 77.8 (31 (Joe 26))	280 m (920 ft) + 340 m (1,120 ft)	air drop, weapons development		38 kt
32 (Joe 27)	17 November 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan 50.42°N 77.78°E / 50.42; 77.78 (32 (Joe 27))	280 m (920 ft) + 2,000 m (6,600 ft)	air drop, weapons development	TN	900 kt
33 (Joe 28)	14 December 1956	ALMT (6 hrs)	Ground Zero, Semipalatinsk, Kazakhstan ~ 50.4°N 77.8°E / 50.4; 77.8 (33 (Joe 28))	280 m (920 ft) + 1,965 m (6,447 ft)	air drop, weapons development		40 kt

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