SEV3 — ElevatedCLOSEDWeather✓ Corroborated · 5 sources2d ago

Tornado Warning — Us Midwest

A tornado warning has been issued for the US Midwest region, with associated news coverage referencing a super typhoon impacting Taiwan and a minor US territory. No known contact-center or knowledge-worker operations are confirmed in the affected areas. No staffing or service-level disruption is anticipated for WFM-relevant sites.

Impact Summary

A tornado warning has been issued for the US Midwest region, with associated news coverage referencing a super typhoon impacting Taiwan and a minor US territory. No known contact-center or knowledge-worker operations are confirmed in the affected areas. No staffing or service-level disruption is anticipated for WFM-relevant sites.

Domain
Weather
Region
Us Midwest, Us Midwest
Opened By
watchkeeper
Jul 9, 2026, 03:30 AM UTC
Validated By
auto
Jul 9, 2026, 03:30 AM UTC
Event Cluster
4 events
OVIX Score
10.0
Closed
watchkeeper-auto(resolved)
Jul 11, 2026, 02:00 PM UTC

Timeline8

⚠
Incident openedby watchkeeperJul 9, 2026, 03:30 AM UTC
Declared from 1 signals. OVIX 10. News 1. BPO 0. Acute severe-weather floor (agents-028): authoritative short-fuse warning, declared at SEV3 regardless of resolved BPO footprint.
✓
Severity validatedby autoJul 9, 2026, 03:30 AM UTC
Auto-validated: SEV3 per policy.
✎
Note addedby watchkeeperJul 9, 2026, 03:30 AM UTC
External corroboration: corroborated (5 sources via Exa). weather.gov, spc.noaa.gov, westofthei.com, news-usa.today, watchers.news
✎
Note addedby watchkeeperJul 9, 2026, 04:00 AM UTC
Merged new cluster (1 signals, OVIX 10) — same domain, active <24h.
✎
Note addedby watchkeeperJul 10, 2026, 01:30 AM UTC
Merged new cluster (1 signals, OVIX 10) — same domain, active <24h.
✎
Note addedby watchkeeperJul 10, 2026, 02:00 AM UTC
Merged new cluster (1 signals, OVIX 10) — same domain, active <24h.
↻
Revalidatedby watchkeeperJul 11, 2026, 03:30 AM UTC
Revalidated: no new activity. Next reval in 48h.
✖
Incident closedby watchkeeperJul 11, 2026, 02:00 PM UTC
Auto-closed: no new material events within 36h for this incident.

Evidence / Why this?

Traced to source — read-onlyUpdated Jul 9, 03:30 AM UTC
Why declareddeclareHybrid
Incident declaration (deterministic floor + LLM relevance gate)v1
DECLARE when deterministicFloor AND (llm.declare OR acuteWeatherFloor) AND NOT aggregateTitle, and no open same-domain incident merges it. deterministicFloor = maxSeverity>=8 AND (newsScore>=1 OR bpoScore>=1 OR acuteWeatherFloor). acuteWeatherFloor = maxSeverity>=9 AND any signal is an acute severe-weather WARNING (tornado/severe-thunderstorm/flash-flood) — overrides the LLM footprint-based suppression. aggregateTitle (grab-bag "Multiple/Several/Various…") is refused (agents-019 §D). Asset-class deny (military/war-zone, WFM-37) suppresses earlier. cyberFloor disabled (agents-009 hotfix).
domain
weather
regions
["Us Midwest"]
bpo score
0
news score
1
llm declare
no
max severity
10
signal count
1
llm rationale
Suppressed: operations footprint shows no contact-center or knowledge-worker presence in the affected region, and materially similar Midwest tornado warnings are already captured in open incidents.
aggregate title
no
high confidence
yes
acute weather floor
yes
deterministic floor
yes
model claude-sonnet-4-6 · prompt watchkeeper-declare-2026-06
Why SEV3SEV3score 3Deterministic
Incident severity level (SEV1–SEV4) at declarationv1
Base: SEV2 if sev>=9 AND news>=2 AND bpo>=1; else SEV3 if sev>=8 AND (news>=1 OR bpo>=1); else SEV4. Acute severe-weather (agents-028): if sev>=9 floor to SEV3 (SEV2→SEV3); minor/transient watches+advisories drop SEV2/SEV3→SEV4. Single-event cap: any SEV2 caps to SEV3 absent sustained multi-day BPO-region corroboration (SEV2 promotion is human-gated via revalidation). score = numeric SEV (1=most severe … 4); SEV3/SEV4 auto-validate, SEV1/SEV2 require human validation.
domain
weather
bpo score
0
news score
1
persistent
no
max severity
10
auto validated
yes
acute weather floor
yes
Geo Provenance
Tierprecise
Sourcesignal_coords
Deterministic

Related Signals2

[Us Midwest] weather 10.0 — Tornado Warningsentinel1d ago[Us Midwest] weather 10.0 — Tornado Warningsentinel2d ago

External Corroboration

✓ Corroborated · 5 sourcesChecked Jul 9, 2026, 03:30 AM UTC
Current Watches and Warnings - NWS Twin Cities↗weather.govJul 4, 2026, 03:30 AM UTCStorm Prediction Center Jul 8, 2026 2000 UTC Day 1 Convective Outlook↗spc.noaa.govJul 8, 2026, 12:00 AM UTCTornado warning issued – West of the I↗westofthei.comJul 3, 2026, 12:00 AM UTCTornado Warning Issued for Iowa as Superstorms Move Northeast of Waterloo - News Usa Today↗news-usa.todayJul 2, 2026, 07:47 PM UTCEF2 tornado injures two, damages homes near Detroit Lakes, Minnesota - The Watchers↗watchers.newsJul 8, 2026, 02:32 PM UTC

Affected Regions

Us Midwest