Hurricane Ivan — Gulf Shores AL / Pensacola FL, September 2004

Total Insured Loss

$9.69B

Wind + Surge — 1,221,738 buildings modeled

🌪 Wind Loss

$9.56B

1,153,175 buildings affected · peak 116 mph

BM: $7.00B (+36.5%) — AIR Worldwide 2004: ~$7B insured. Swiss

🌊 Surge Loss

$136.6M

3,535 buildings inundated · peak WSE 12.7 ft

BM: $1.50B (-90.9%) — insured fraction pending

Storm Summary

CategoryCat 3

Max wind105 kt

Min pressure946 mb

Peak model wind116 mph

Surge WSE peak12.7 ft

Peak depth at FFE10.7 ft

VE zone buildings4,484

VE open / enclosed2,960 / 1,524

View Mode

Wind

Surge

Combined

Legend

None (<1%)

Minor (1–10%)

Moderate (10–30%)

Severe (30–70%)

Destruction (>70%)

Layers

Storm Track Buildings

Pipeline Stages

S1 — Track

HURDAT2 AL092022 — 39 pts

S2 — Holland B Wind Field

1,221,738 FL buildings

S2s — Surge Field

Irish et al. parametric WSE · FM 12.7 ft ({peak_wse-14.1:+.1f} ft vs 14.1 ft obs)

S3 — HAZUS Wind Fragility

By construction class

S3s — HAZUS Surge Curves

VE open/enclosed + AE · enclosure_class from SI

S4 — Loss Aggregation

Wind $9.56B · Surge $136.6M

S5 — Viewer Deploy

PMTiles · Cloudflare Pages

Wind: Holland B parametric field. Surge: Irish et al. (2008) parametric WSE. Peak 1×Rmax right of track. HAZUS Ch. 7 depth-damage curves by enclosure class (Phase 6 SI). Combined = max(wind DR, surge DR).

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Hurricane Ivan — Gulf Shores AL / Pensacola FL, September 2004 — Wind & Surge Damage