ACE is only calculated for full advisories on tropical systems at or exceeding NUMBER@1 knots -LRB- NUMBER@2 mph/63 km/h -RRB- , or tropical storm strength .

ACE is only calculated for full advisories on tropical systems at or exceeding NUMBER@1 knots -LRB- NUMBER@2 mph/63 km/h -RRB- or tropical storm strength .
