Rating
Sierra Leone risk rating
Not currently assessed · Model legacy
Computed: 2026-09-04 21:02:16 UTC · Valid until: Not recorded
Coverage is selective. Missing or expired assessments do not mean zero hazard. Scores are heuristic indices, not calibrated probabilities. Model cards and limits
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.
Recorded hazard contributions
Mean event index: 50/100 · Eligible records: 1
The four aggregate contributions were not stored for this assessment. Hazard averages are separate recorded values, not reconstructed aggregate terms.
Rating history
- BtoAindex 23 → 1598d agoCountry rating changed from B to A (score 23 → 15)Unhealthy Air Quality (AQI 156) (CalamityScore 35)
EVENT: Unhealthy Air Quality (AQI 156) — SL Detected: 2026-07-06T07:00:00.000Z CalamityScore: 35/100 Severity: medium POPULATION AT RISK: Estimated 161,174 people within impact zone HISTORICAL CONTEXT: Location: SL region. RECOMMENDED ACTIONS: Conduct structural assessments of vulnerable buildings. Issue public advisories. Monitor seismic activity. No cascade risks detected for this event.
- AtoBindex 10 → 22101d agoCountry rating changed from A to B (score 10 → 22)Unhealthy Air Quality (AQI 173) (CalamityScore 40)
- AtoBindex 11 → 23102d agoCountry rating changed from A to B (score 11 → 23)Unhealthy Air Quality (AQI 169) (CalamityScore 40)
- AtoBindex 15 → 23108d agoCountry rating changed from A to B (score 15 → 23)Unhealthy Air Quality (AQI 176) (CalamityScore 40)
- AtoBindex 11 → 22133d agoCountry rating changed from A to B (score 11 → 22)Unhealthy Air Quality (AQI 154) (CalamityScore 40)
- BtoAindex 22 → 17142d agoCountry rating changed from B to A (score 22 → 17)Unhealthy Air Quality (AQI 155) (CalamityScore 35)
- BtoBindex 22 → 22Yellow → Green142d agoOperational status changed from yellow to greenUnhealthy Air Quality (AQI 195) (CalamityScore 40)
- BtoBindex 22 → 22Green → Yellow142d agoOperational status changed from green to yellowVery Unhealthy Air Quality (AQI 258) (CalamityScore 40)
- CtoBindex 51 → 37143d agoCountry rating changed from C to B (score 51 → 37)Large Wildfire (CalamityScore 66)
- CtoBindex 51 → 37143d agoCountry rating changed from C to B (score 51 → 37)Large Wildfire (CalamityScore 66)
- CtoBindex 51 → 25Orange → Green143d agoCountry rating changed from C to B (score 51 → 25)Operational status changed from orange to greenUnhealthy Air Quality (AQI 162) (CalamityScore 40)
- CtoBindex 46 → 37143d agoCountry rating changed from C to B (score 46 → 37)Large Wildfire (CalamityScore 66)
- CtoAindex 45 → 13Orange → Green144d agoCountry rating changed from C to A (score 45 → 13)Operational status changed from orange to greenUnhealthy Air Quality (AQI 162) (CalamityScore 14)
- CtoAindex 47 → 16Orange → Green144d agoCountry rating changed from C to A (score 47 → 16)Operational status changed from orange to greenUnhealthy Air Quality (AQI 166) (CalamityScore 14)
- DtoCindex 67 → 45Red → Orange144d agoCountry rating changed from D to C (score 67 → 45)Operational status changed from red to orangeLarge Wildfire (CalamityScore 66)
- DtoCindex 67 → 45Red → Orange144d agoCountry rating changed from D to C (score 67 → 45)Operational status changed from red to orangeLarge Wildfire (CalamityScore 66)
- DtoCindex 67 → 45Red → Orange144d agoCountry rating changed from D to C (score 67 → 45)Operational status changed from red to orangeLarge Wildfire (CalamityScore 66)
- CtoDindex 56 → 74Orange → Red144d agoCountry rating changed from C to D (score 56 → 74)Operational status changed from orange to redMajor Wildfire (CalamityScore 71)3 new cascade alert(s)
- CtoDindex 56 → 74Orange → Red144d agoCountry rating changed from C to D (score 56 → 74)Operational status changed from orange to redMajor Wildfire (CalamityScore 71)3 new cascade alert(s)
- CtoAindex 56 → 20Orange → Green144d agoCountry rating changed from C to A (score 56 → 20)Operational status changed from orange to greenUnhealthy Air Quality (AQI 160) (CalamityScore 35)