electrical storm vs electric storm

electrical storm and electric storm both are nouns.

Word	Noun	Adjective	Verb	Adverb
electrical storm	Yes	No	No	No
electric storm	Yes	No	No	No

As nouns, electrical storm and electric storm are synonyms defined as:

electrical storm and electric storm: a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning

Other synonyms of electrical storm include thunderstorm.

electrical storm (noun)	electric storm (noun)
a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning	a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning