The Met Office issues weather warnings in the UK to alert people of potential severe weather, categorized by colour-coding. Red warnings indicate a high chance of dangerous weather causing widespread disruption and damage. Those in red warning areas should take immediate action to protect themselves and their property. Amber warnings indicate an increased likelihood of severe weather, and people should be prepared for disruption and take necessary precautions. Yellow warnings suggest a possibility of disruption, and people should be aware and take appropriate measures to safeguard themselves and their belongings.