Fòram na Gàidhlig

German scholar H. Petersmann has proposed a rather different interpretation of the theology of Neptune.[52] Developing his understanding of the theonym as rooted in IE *nebh, he argues that the god would be an ancient deity of the cloudy and rainy sky in company with and in opposition to Zeus ...

So, now.
In Portugal, the .um. port of Balsa may be named from Baal Saphon, god of storms. There is a shrine on the mountain top to Zephyr the storm wind, like Baal of storms. Sailors are guided by the lighthouse there built by Rome.
Portuguese "balsa" means a river-raft or river-boat. Also a pool ...

Sanskrit root: balh , बल्ह : to be pre-eminent ,

Skr बलिन् balin m. : soldier
Hebrew בעל (Ba‘al, "Baal", and ba‘al, "lord, husband"), from Proto-Semitic *baʿl- ‎(“owner, lord, husband”).

Again, "strong : storm" may or may not be linked.
"Pre-eminent : soldier : lord" may or may not be linked ...

If ON balkr is a " furrow between 2 banks", then a plural may be formed, with root *bhelg or *bal. So bulkhead is usually meaning several in a boat, or beams / walls in a house. But "cloud-bank" is not really meaning "rainfall".
Old Norse.
Suffix -ar : plural , possessive.
Bhailceach "seasonal rain ...

From this distance (in Oz ) I noticed a pic of Norway with a solid bank of storm clouds.
Old English balca "ridge, bank," from or influenced by Old Norse balkr "ridge of land," especially between two plowed furrows, both from Proto-Germanic *balkon- (cognates: Old Saxon balko, Danish bjelke, Old ...

Mhaioneach bhainneach , gruthach, mhaoisleach, shlamanach , uanach , uachdarach , mhiosganach are good for you.
But A Bhealtuinn bailceach is not.
Who needs more rain after winter? " Bailc " may derive from ON balkr storm which is not from root *bal - "strong".
Possibly the Norse word came from ...