Definition
A consolidated weather information service that gathers storm data — including thunderstorms, severe weather, and convective activity — from multiple sources and makes it available in one place for use by pilots, dispatchers, and air traffic personnel.
Plain English
A single system that pulls together storm reports from many sources so the people flying and managing flights can see all the bad weather in one place.
Context Anchor
Seen in FAA acronym lists and in weather or traffic-management contexts involving thunderstorm information.
Derivation
Centralized means brought together into one place. The term reflects the system's purpose: instead of pilots and controllers chasing storm data across separate sources, it's all collected centrally.
Why Pilots Care
Gives pilots access to consolidated storm data that helps them avoid hazardous weather and plan safer routes.
Grounding Statement
Instead of each user relying only on separate local reports, CSIS supports a common storm picture from a central source.
Intuition Check
Do not read “centralized” as meaning the storm is in the center of an area. Here it means the information is collected and managed from one main source.
Example Sentence 1
The dispatcher checked CSIS before releasing the flight, looking for any thunderstorm activity along the planned route.
Example Sentence 2
CSIS integrates real-time storm observations so controllers can relay accurate updates to enroute aircraft.