Strong Wind & Rough Seas Warning Issuance Criteria


Warning Level Criteria Possible Effects Action Taken
FIRST/ALERT Strong winds with wind speeds from 40-50 kmph and/or rough seas with wave heights of up to 3.5 meters.
  • Dangerous to small boats.
  • Dangerous to all recreational activities and sea sports.
  • Monitoring is carried out carefully and continuously.
  • Issuance of alerts when criteria are met.
  • Warnings are disseminated to all relevant agencies, mass media and the public through myCuaca, eMET, SMS, MET Malaysia website, mass media, social media, fax and email.
SECOND/SEVERE Strong winds with wind speeds of 50-60 kmph and/or rough seas with wave heights of up to 4.5 meters.
  • Harmful to all shipping activities including fishing and ferry services
  • Dangerous to all beach activities.
  • Monitoring is carried out carefully and continuously.
  • Issuance of alerts when criteria are met.
  • Warnings are disseminated to all relevant agencies, mass media and the public through myCuaca, eMET, SMS, MET Malaysia website, mass media, social media, fax and email.
THIRD/DANGER Strong winds with speeds exceeding 60 km/h and/or rough seas with wave heights exceeding 4.5 meters.
  • Harmful to all shipping activities.
  • Dangerous to oil rig workers.
  • Dangerous to all beach activities.
  • Monitoring is carried out carefully and continuously.
  • Issuance of alerts when criteria are met.
  • Warnings are disseminated to all relevant agencies, mass media and the public through myCuaca, eMET, SMS, MET Malaysia website, mass media, social media, fax and email.