Final answer:
A hazard severity category with little or no adverse impact on capability or readiness is low, indicating minor disruptions that do not significantly affect operations or readiness.
Step-by-step explanation:
The hazard severity category that is indicated by little or no adverse impact on mission capability or unit readiness can be considered low. This type of category implies that despite the presence of a hazard, the ability to carry out operations or maintain readiness is not significantly impaired. Examples of this could include minor disruptions that can be easily managed or resolved without causing major issues to operational capabilities. It is essential to have countermeasures and preparedness programs in place to ensure that even low-severity hazards can be addressed effectively, thus preventing escalation into higher-severity categories that may present severe fragmentation, a continuing decline in effectiveness, or extreme fluctuations in operation capabilities.
The hazard severity category indicated by little or no adverse impact on mission capability or unit readiness is typically associated with a low threat value on the Torino Impact Hazard Scale (TIHS).
The TIHS categorizes the impact hazard associated with near-Earth objects, such as asteroids and comets. It combines probability statistics and known damage potentials into a single threat value.
When there is little to no adverse impact on mission capability or unit readiness, the threat value would be considered low on the TIHS.