Around 4pm, a deep and distant thrum sounds across the river. The grey sky is shifting from luminescent light to intensifying dark until a bank of rolling blackness descends over us and thunder booms ever nearer.
An eerie stillness descends over Govan. People clear off the streets and stand in doorways to watch Nature's display.
Lightning suddenly flashes in a fork across the sky and almost simultaneously there's a thundering crack of immense power and noise.
Loudest ever I heard, it shakes us and the building!
And again - together with a lightning flash that rips right across the sky, from horizon to as high as you can see.
Our own Govan Baby, born at the Govan Fair weekend, watches and listens at the window and is lulled by the magnificent storm.