SEV3 — ElevatedCLOSEDWeather✓ Corroborated · 5 sources7d ago

Severe Thunderstorm Warning — Des Moines

A Severe Thunderstorm Warning has been issued for Des Moines, Iowa, a metro area hosting approximately 11,270 contact-center seats, 22,410 back-office seats, and 55,950 knowledge-worker seats. Severe thunderstorms can produce damaging winds, large hail, and localized flooding that may disrupt commutes, cause power outages, and degrade site-level operations. Operations leaders should monitor for absenteeism spikes, power or connectivity disruptions at affected sites, and consider activating work-from-home contingency protocols where available.

Impact Summary

A Severe Thunderstorm Warning has been issued for Des Moines, Iowa, a metro area hosting approximately 11,270 contact-center seats, 22,410 back-office seats, and 55,950 knowledge-worker seats. Severe thunderstorms can produce damaging winds, large hail, and localized flooding that may disrupt commutes, cause power outages, and degrade site-level operations. Operations leaders should monitor for absenteeism spikes, power or connectivity disruptions at affected sites, and consider activating work-from-home contingency protocols where available.

Domain
Weather
Region
Des Moines, US, US
Opened By
watchkeeper
Jul 4, 2026, 08:00 AM UTC
Validated By
auto
Jul 4, 2026, 08:00 AM UTC
Event Cluster
2 events
OVIX Score
10.0
Closed
watchkeeper-auto(resolved)
Jul 5, 2026, 08:30 PM UTC

Timeline5

⚠
Incident openedby watchkeeperJul 4, 2026, 08:00 AM UTC
Declared from 1 signals. OVIX 10. News 3. BPO 1. Acute severe-weather floor (agents-028): authoritative short-fuse warning, declared at SEV3 regardless of resolved BPO footprint.
✓
Severity validatedby autoJul 4, 2026, 08:00 AM UTC
Auto-validated: SEV3 per policy.
✎
Note addedby watchkeeperJul 4, 2026, 08:00 AM UTC
External corroboration: corroborated (5 sources via Exa). hastingstribune.com, kwbg.com, kcrg.com, globegazette.com, news-usa.today
✎
Note addedby watchkeeperJul 4, 2026, 08:30 AM UTC
Merged new cluster (1 signals, OVIX 10) — same domain, active <24h.
✖
Incident closedby watchkeeperJul 5, 2026, 08:30 PM UTC
Auto-closed: no new material events within 36h for this incident.

Evidence / Why this?

Traced to source — read-onlyUpdated Jul 4, 08:00 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
["Des Moines"]
bpo score
1
news score
3
llm declare
yes
max severity
10
signal count
1
llm rationale
Des Moines carries a meaningful operational footprint across all three seat categories, and a Sev 10 severe thunderstorm warning represents a credible acute disruption risk to staffing and site continuity warranting declaration.
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
1
news score
3
persistent
no
max severity
10
auto validated
yes
acute weather floor
yes
Geo Provenance
Tierprecise
Sourcesignal_coords
Deterministic

Related Signals1

[Des Moines] weather 10.0 — Severe Thunderstorm Warningsentinel7d ago

External Corroboration

✓ Corroborated · 5 sourcesChecked Jul 4, 2026, 08:00 AM UTC
IA WFO DES MOINES Warnings, Watches, and Advisories | Personal Finance | hastingstribune.com↗hastingstribune.comJul 3, 2026, 04:16 AM UTCWeather Service Update for Possible Severe Storms↗kwbg.comJul 3, 2026, 11:51 PM UTCFIRST ALERT: Watch issued for damaging wind threat↗kcrg.comJul 4, 2026, 12:56 AM UTCSevere Thunderstorm Warning until THU 12:45 PM CDT↗globegazette.comJul 2, 2026, 05:27 PM UTCSevere Thunderstorm Watch Issued for Central Iowa Through Thursday Evening - News Usa Today↗news-usa.todayJul 2, 2026, 11:39 PM UTC

Affected Regions

Des Moines