Downrightnow
// Incident Post-MortemDRN-9D4A6BD5

Claude outage on May 19, 2026

Minor severityResolved54 minAI Tools
Started · UTC
May 19, 07:39 AM
4d ago
Resolved · UTC
May 19, 08:33 AM
4d ago
Duration
54 min
End-to-end
Peak confidence
24.00
17 snapshots
// User impact

Claude users likely saw failed connections, degraded availability, or session instability for this AI Tools service. The incident reached Minor severity and lasted 54 min. The stored report window does not show a preserved user-report spike.

// What happened

Anthropic’s official status page is reporting a minor incident, “Elevated errors on Claude Haiku 4.5,” currently in monitoring, affecting claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com), Claude Code, and Claude Cowork. Downrightnow’s signals are otherwise quiet (0 user reports, DNS resolving normally, no major regional network anomaly, and no Hacker News chatter), so this may be intermittent or component-specific despite the potentially broad scope.

Cached · Tue, May 19, 2026, 08:03 AM UTC · scope: this incident

// Timeline
  1. Status changed to Possible Issues

    The stored readout moved to Possible Issues with confidence 38.00.

  2. Incident detected

    Minor confidence crossed the incident threshold for Claude.

  3. Status changed to Operational

    The stored readout moved to Operational with confidence 80.00.

  4. Marked resolved

    The incident was closed after 54 min of observed impact.

  5. Peak confidence reached

    Confidence peaked at 80.00 while the service was marked Operational.

  6. Status changed to Possible Issues

    The stored readout moved to Possible Issues with confidence 38.00.

// Signals by source0 sources

No per-source signal payloads were preserved in this incident's snapshot window.

// Aggregate evidence

Confidence scoring

24.00

The incident reached 24.00 peak confidence across 17 stored status snapshots.

User reports

0 / 15m

No elevated user-report volume was preserved in the incident window snapshots.

Status samples

10 affected

10 snapshots in the window showed degraded, recovering, or major-outage state before recovery.

Recovery signal

Resolved

Recovery was recorded at Tue, May 19, 2026, 08:33 AM UTC.