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What the picker changes
  • Top topics digest — the cards score the selected period against the prior 4 weeks.
  • 12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
  • Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
  • Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
  • Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.
What stays as-is
  • Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
  • Co-occurrence graph — recent-activity anchored, not picker-driven.
  • Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.
Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.
Weekly Rolling 7 days
live window
Press topic

Nitrate Emergency In Southland

4 articles · 2 aliases in press · peaked week of 5 Jul 2026 · first seen 28 Apr 2026

Nitrate emergency declarations in Southland and Canterbury over water contamination from dairy farming, prompting protests, investigations, and debate about fertilizer regulations.

The stories behind this signal

across press, releases & commentary · links open at the source
News Water regulator tells Canterbury Regional Council long-term nitrate limits being considered RNZ · 9 SepRead ↗

Sample framings

Up to 12 framings across outlets and orientations — each a short phrase the extractor generated to characterise the piece's editorial angle (not a quote). Filter by lean to see how each bloc is spinning the story; click through to read the original.

rnz Centre

regional council's response to elevated nitrate levels

Water regulator tells Canterbury Regional Council long-term nitrate limits being considered
9 Sep
spinoff Centre-left

symbolic step amid growing pollution concerns

Environment canterbury has declared a nitrate emergency now what
19 Sep
+2 more framings Create a free account to see them all →

Coverage by outlet lean Methodology →

Stacked weekly counts; colour by editorial lean. Stuff and The Spinoff lean centre-left, NZ Herald centre-right, others centre.

Alias drift

How press outlets have named this topic, week by week.

Free account Create a free account to watch this topic — get alerted when framing shifts, when an MP adopts new language, or when discourse and press diverge. Create a free account Log in

Recent headlines

Most recent 4 articles linking to this topic.

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