A storm is likely to come when:
- deciduous trees flip their leaves due to wind direction
- birds fly low in the sky, and go quiet
- there’s a southerly wind (in the US)
- there’s a red dawn in the east
- layers of nimbus clouds move in opposite directions
- the morning grass is dry of dew
- an earthy scent rises from the soil and flowers
- pine cones remain closed
- a halo rings the moon at night
- nights are warm in winter (cloud cover insulation)
- smoke swirls and descends, instead of a steady rise
Remember, low pressure brings wet weather.