What is the specific wind speed of a Category 12 typhoon? How much damage can it cause to buildings and trees?
TyphoonSays·防御问答 · Typhoon knowledge · 更新 at 2026-08-03
How fast is the wind speed of a Category 12 typhoon?
When we hear "Category 12 typhoon," images of raging winds often come to mind, but what are the specific numbers? According to the National Standard for Tropical Cyclone Grades (GB/T 19201-2006) issued by the China Meteorological Administration (CMA), a typhoon is defined as a tropical cyclone with maximum sustained wind forces of Category 12 or higher near its center.
Specifically, the maximum average wind speed near the surface center corresponding to Category 12 winds is 32.7 m/s to 36.9 m/s. Converted into kilometers per hour, which is more familiar to many, this equals 118 km/h to 133 km/h. To put this in perspective, this speed is close to or even exceeds that of a car driving normally on a highway. At this wind level, the air pressure generated is immense; standing against the wind makes it nearly impossible to stay upright, ordinary umbrellas will be instantly flipped inside out or broken, and walking outdoors is extremely dangerous. It is important to note that this refers to "average wind speed." In gusts, instantaneous wind speeds can be even higher, resulting in greater destructive power.
Actual Destructive Power on Trees and Buildings
Category 12 winds fall under the "hurricane" level, and their destructive power should not be underestimated. The impact is mainly reflected in the damage to natural vegetation and man-made facilities:
- Impact on trees: At this wind level, large trees are no longer safe shelters. Many tree branches will be snapped off on a large scale, and some trees may even be uprooted. Species with shallow root systems and large crowns are particularly prone to toppling. This not only blocks traffic but can also snap overhead power lines or crush vehicles below.
- Impact on buildings: For reinforced concrete structures built according to modern building codes, a Category 12 typhoon usually does not cause the main structure to collapse, but risks still exist. Roof tiles on older houses may be blown off, and window glass that is not reinforced or has cracks is highly likely to shatter. Additionally, objects hanging at heights such as flower pots on balconies, air conditioner outdoor unit brackets, and billboards are major hazard points. They are highly likely to detach in strong winds, becoming "high-altitude bombs."
Resident Response and Safety Tips
Facing a Category 12 typhoon, the core strategy for ordinary residents is "avoidance" rather than "resistance." When meteorological departments issue yellow, orange, or red typhoon warning signals, it means wind forces may reach or have already exceeded Category 12. At this time, local authorities typically activate corresponding emergency response mechanisms, including measures such as school suspensions, work stoppages, and transport halts. Please note that standards may vary by location; please refer to announcements from your local government and closely monitor official local notifications.
For home protection, it is recommended that you take the following actions:
- Clear balconies: Move flower pots, clothing, and miscellaneous items indoors to prevent them from falling and injuring people.
- Reinforce windows and doors: Check window latches. If necessary, apply tape in an "X" or asterisk pattern on the glass to increase toughness, and stay away from windows facing the wind.
- Stockpile supplies: Prepare an adequate amount of drinking water, dry food, flashlights, and power banks to cope with temporary power and water outages caused by fallen trees snapping power lines.
During a typhoon, do not go outside casually to watch the wind and waves; safety always comes first. Real-time typhoon tracks can be checked at TyphoonSays (taifengshuo.com)
This article is typhoonsay's original copy content, and the local policy standards are based on the local government's latest release.