1. Clouds
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2. Clouds High cloud Mid-cloud Low Cloud (vertical) Cirrus Altocumulus
Nimbostratus
Cumulo- nimbus
Cirrocumulus
Altostratus
Stratus
Cumulus
Cirrostratus
Stratocumulus
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3. Depressions
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4. Cirrus “Mares tails” During settled weather
Hearlds onset of depression
High level cloud-ice crystals
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5. Cirrocumulus “Mackerel sky” Weather still settled
Cloud still very high but thickening
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6. Cirrostratus Veil or layer of high cloud Halo around sun or moon
Sure sign of deteriorating weather if covering whole sky
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7. Altocumulus Mid level layer of cloud
Clouds thicker and lower – likely to hearld lower cloud and rain
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8. Altostratus Layer of mid level cloud Rain is beginning to “spit”
“Watery” sun of moon may be visible
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9. Nimbostratus Low cloud Layer of grey cloud Rain more constant
Sun gone!
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10. Stratus “Layer of cloud” Low cloud Drizzle In warm sector
Visibility not good- can thicken to fog-if moist air is warmer than water
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11. Stratocumulus “Layer of cotton wool clouds” Low cloud
In warm sector away from centre
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12. Cumulonimbus Grey towering cotton wool cloud Anvil shaped
Comes with the cold front
Be prepared for squalls, rain and veering wind
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13. Cumulus Cotton wool cloud After cold front Showers
Squalls with bigger cumulus
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14. Fair Weather Cumulus
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