Trend indicates a possible threat of destructive winds of the force indicated within 72 hours. Review hazardous and destructive weather Implementation plans, as established by local regulations.
Destructive winds of the force indicated are possible within 48 hours. Take preliminary precautions.
Destructive winds of force indicated are anticipated within 24 hours. Take precautions that will permit establishment of an appropriate state of readiness on short notice.
Destructive winds of the force indicated are occurring or anticipated within 12 hours. Final precautions as prescribed.