Interactive publication
Back to the catalogueTemporalCase 10 of 10
Weather polygons
Weather alert/impact polygons (storm tracks, flood zones, air-quality advisories) are issued, updated, and retracted on an hourly-to-sub-hourly cadence; using a cached or stale version misrepresents current conditions for weather-triggered targeting or reporting.
Class
Case to account for
Affects
2 conversions
01
Detection
Polygon issued/valid timestamp older than the source's typical update cadence for that alert type.
02
Mitigation
01
Re-fetch weather polygons on the vendor's native update cadence, never cache beyond it
02
Timestamp every cell-weather join with the polygon's issued time, not the query time
03
Affected conversions
PolygonH3 (intersects)
OPENRasterH3
OPEN