Rating

Northern Mariana Islands risk rating

Last activity grade, not currentAindex 4.0/100
Operational statusGreen, expired
Last updated6d ago

Expired, last assessment only · Model activity-rating-2

Computed: 2026-10-05 22:36:09 UTC · Valid until: 2026-10-06 00:36:09 UTC

Coverage is selective. Missing or expired assessments do not mean zero hazard. Scores are heuristic indices, not calibrated probabilities. Model cards and limits

state:
partial
missing Country:
unassessed
country Limit:
100
forecast:
assessed
population Metric:
urban event exposures not unique people

This is a last assessment, not a current rating. Its validity has expired or was not recorded. That does not establish that no events or hazards are present.

The rating is a composite index of reported activity; it does not measure structural vulnerability or coping capacity. It shares inputs with the Calamity Forecast Index. Neither index is a calibrated event probability. Model cards and formulas.

Rating components

Summed event intensity33.2/100
Scenario weight00.0/100
Cumulative urban PEI00.0/100
CFI activity proxy1818.0/100

Recorded hazard contributions

Earthquake

Mean event index: 16/100 · Eligible records: 1

Rating history

  1. AtoAindex 7 → 4Yellow → Green6d ago
    Operational status changed from yellow to greenCurrent dominant event: M 5.1 Earthquake (CalamityScore 16); cause of change not attributedseverity component 3.6 → 3.2forecast component 39.0 → 18.0

    Operational status changed from yellow to green. Current dominant event: M 5.1 Earthquake (CalamityScore 16); cause of change not attributed. severity component 3.6 → 3.2. forecast component 39.0 → 18.0. Context: EVENT: M 5.1 Earthquake — MP Detected: 2026-10-05T10:52:10.440Z CalamityScore: 16/100 Severity: medium CONTEXT: Country: MP. Consult current official local emergency instructions. This automated index does not issue evacuation orders. No scenario matched the configured rules; this does not establish absence of risk.

  2. AtoAindex 6 → 7Green → Yellow9d ago
    Operational status changed from green to yellowCurrent dominant event: Typhoon Choi-Wan (CalamityScore 18); cause of change not attributedseverity component 6.8 → 3.6forecast component 24.0 → 39.0
  3. AtoAindex 9 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.147 million . (CalamityScore 44)
  4. AtoAindex 9 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.147 million . (CalamityScore 44)
  5. AtoAindex 12 → 9Orange → Green98d ago
    Operational status changed from orange to greenFlash Flood Warning (CalamityScore 22)
  6. AtoAindex 12 → 9Orange → Green98d ago
    Operational status changed from orange to greenFlash Flood Warning (CalamityScore 22)
  7. AtoAindex 12 → 9Orange → Green98d ago
    Operational status changed from orange to greenFlash Flood Warning (CalamityScore 22)
  8. AtoAindex 10 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  9. AtoAindex 10 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  10. AtoAindex 10 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  11. AtoAindex 10 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  12. AtoAindex 10 → 12Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  13. AtoAindex 8 → 10Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 0.198 million . (CalamityScore 44)
  14. AtoAindex 8 → 10Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 48269 . (CalamityScore 44)
  15. AtoAindex 10 → 7Orange → Green98d ago
    Operational status changed from orange to greenDisaster — Mariana Islands (CalamityScore 16)
  16. AtoAindex 10 → 7Orange → Green98d ago
    Operational status changed from orange to greenDisaster — Mariana Islands (CalamityScore 16)
  17. AtoAindex 10 → 7Orange → Green98d ago
    Operational status changed from orange to greenDisaster — Mariana Islands (CalamityScore 16)
  18. AtoAindex 8 → 10Green → Orange98d ago
    Operational status changed from green to orangeRed notification for tropical cyclone BAVI-26. Population affected by Category 1 (120 km/h) wind speeds or higher is 48269 . (CalamityScore 44)
  19. AtoAindex 10 → 7Orange → Green98d ago
    Operational status changed from orange to greenDisaster — Mariana Islands (CalamityScore 16)
  20. AtoAindex 10 → 7Orange → Green98d ago
    Operational status changed from orange to greenDisaster — Mariana Islands (CalamityScore 16)