Clouds 15/01/2019 SailCork Navnotes c

Clouds High cloud Mid-cloud Low Cloud (vertical) Cirrus Altocumulus Nimbostratus Cumulo- nimbus Cirrocumulus Altostratus Stratus Cumulus Cirrostratus Stratocumulus 15/01/2019 SailCork Navnotes c

Depressions 15/01/2019 SailCork Navnotes c

Cirrus “Mares tails” During settled weather Hearlds onset of depression High level cloud-ice crystals 15/01/2019 SailCork Navnotes c

Cirrocumulus “Mackerel sky” Weather still settled Cloud still very high but thickening 15/01/2019 SailCork Navnotes c

Cirrostratus Veil or layer of high cloud Halo around sun or moon Sure sign of deteriorating weather if covering whole sky 15/01/2019 SailCork Navnotes c

Altocumulus Mid level layer of cloud Clouds thicker and lower – likely to hearld lower cloud and rain 15/01/2019 SailCork Navnotes c

Altostratus Layer of mid level cloud Rain is beginning to “spit” “Watery” sun of moon may be visible 15/01/2019 SailCork Navnotes c

Nimbostratus Low cloud Layer of grey cloud Rain more constant Sun gone! 15/01/2019 SailCork Navnotes c

Stratus “Layer of cloud” Low cloud Drizzle In warm sector Visibility not good- can thicken to fog-if moist air is warmer than water 15/01/2019 SailCork Navnotes c

Stratocumulus “Layer of cotton wool clouds” Low cloud In warm sector away from centre 15/01/2019 SailCork Navnotes c

Cumulonimbus Grey towering cotton wool cloud Anvil shaped Comes with the cold front Be prepared for squalls, rain and veering wind 15/01/2019 SailCork Navnotes c

Cumulus Cotton wool cloud After cold front Showers Squalls with bigger cumulus 15/01/2019 SailCork Navnotes c

Fair Weather Cumulus 15/01/2019 SailCork Navnotes c