electric storm vs electrical storm

electric storm and electrical storm both are nouns.

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

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

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

Other synonyms of electric storm include thunderstorm.

electric storm (noun)	electrical 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