It was interpreted to be the tell-tale signature of a two-kiloton nuclear blast.
From the time.com
This is way bigger than 10-ton, several kiloton blast mentioned in the article.
From the science.time.com
A 3.5 kiloton underwater test was performed with the torpedo on September 21, 1955.
From the en.wikipedia.org
Crossroads Able, a 23-kiloton air-deployed nuclear weapon detonated on July 1, 1946.
From the en.wikipedia.org
North Korea's first test yielded less than one kiloton and was widely seen as a dud.
From the france24.com
The largest explosion was estimated to be equivalent to a 1 kiloton nuclear air burst.
From the en.wikipedia.org
A ton of TNT, and its multiples the kiloton, the megaton, and the gigaton.
From the en.wikipedia.org
The first in October 2006 had a yield of approximately a half-kiloton.
From the cnn.com
It is believed capable of carrying up to a 300-kiloton nuclear warhead.
From the al.com
More examples
One thousand tons
A measure of explosive power (of an atomic weapon) equal to that of 1000 tons of TNT
TNT equivalent is a method of quantifying the energy released in explosions. The ton (or tonne) of TNT is a unit of energy equal to 4.184 gigajoules, which is approximately the amount of energy released in the detonation of one ton of TNT. The megaton is a unit of energy equal to 4.184 petajoules .
(Kilotons) The ton is a unit of measure. It has a long history and has acquired a number of meanings and uses over the years. It is used principally as a unit of weight, and as a unit of volume. It can also be used as a measure of energy, for truck classification, or as a colloquial term.
A measure of the strength of an explosion or a bomb based on how many thousand tons of TNT would be needed to produce the same energy
The energy of an explosion that is equivalent to an explosion of 1,000 tons of TNT. One kiloton equals 1 trillion (1012) calories. See also megaton.
An explosive force equivalent to that of 1,000 metric tons of TNT. It is used to rate the energy output, and hence the destructive power, of nuclear weapons.