Seismic hazard in Antioquia

Aa, Av, Ae and Ad for its 125 municipalities under the NSR-10.

Photo: Sven Mieke / Unsplash

According to Appendix A-4 of the NSR-10, of the 125 municipalities of Antioquia, 45 in the high hazard zone and 80 in the intermediate hazard zone. The capital, Medellín, has Aa = 0.15 and Av = 0.20, intermediate hazard. Across the department, Aa ranges from 0.10 to 0.35 and Av from 0.15 to 0.35.

Municipalities: 125
Capital: Medellín
Aa / Av of the capital: 0.15 / 0.20
High hazard: 45
Intermediate hazard: 80
Low hazard: 0

Municipalities of Antioquia

Values from Appendix A-4 of the NSR-10. Tap a municipality to open its design spectrum.

Source: NSR-10, Title A, Appendix A-4. Zone according to A.2.3.
Municipality	Code	Aa	Av	Zone	Ae	Ad
Medellín	05001	0.15	0.20	Intermediate	0.13	0.07
Abejorral	05002	0.20	0.25	High	0.13	0.07
Abriaquí	05004	0.20	0.25	High	0.13	0.07
Alejandría	05021	0.15	0.20	Intermediate	0.09	0.05
Amagá	05030	0.20	0.25	High	0.16	0.09
Amalfi	05031	0.15	0.20	Intermediate	0.07	0.04
Andes	05034	0.25	0.30	High	0.17	0.10
Angelópolis	05036	0.20	0.25	High	0.16	0.08
Angostura	05038	0.15	0.20	Intermediate	0.09	0.04
Anorí	05040	0.15	0.20	Intermediate	0.07	0.04
Anzá	05044	0.20	0.30	High	0.14	0.08
Apartadó	05045	0.25	0.25	High	0.19	0.09
Arboletes	05051	0.10	0.20	Intermediate	0.05	0.03
Argelia	05055	0.15	0.20	Intermediate	0.12	0.07
Armenia	05059	0.20	0.25	High	0.15	0.08
Barbosa	05079	0.15	0.20	Intermediate	0.10	0.05
Bello	05088	0.15	0.20	Intermediate	0.13	0.07
Belmira	05086	0.15	0.20	Intermediate	0.12	0.06
Betania	05091	0.25	0.30	High	0.16	0.10
Betulia	05093	0.20	0.25	High	0.14	0.08
Briceño	05107	0.15	0.20	Intermediate	0.12	0.06
Buriticá	05113	0.20	0.25	High	0.12	0.07
Cañasgordas	05138	0.20	0.25	High	0.12	0.07
Cáceres	05120	0.15	0.20	Intermediate	0.08	0.03
Caicedo	05125	0.20	0.25	High	0.13	0.07
Caldas	05129	0.20	0.20	Intermediate	0.16	0.08
Campamento	05134	0.15	0.20	Intermediate	0.08	0.04
Caracolí	05142	0.15	0.20	Intermediate	0.13	0.06
Caramanta	05145	0.25	0.25	High	0.15	0.09
Carepa	05147	0.25	0.25	High	0.16	0.08
Carmen De Viboral	05148	0.15	0.20	Intermediate	0.11	0.06
Carolina	05150	0.15	0.20	Intermediate	0.09	0.05
Caucásia	05154	0.15	0.20	Intermediate	0.04	0.02
Chigorodó	05172	0.25	0.30	High	0.19	0.10
Cisneros	05190	0.15	0.20	Intermediate	0.09	0.04
Ciudad Bolívar	05101	0.25	0.30	High	0.16	0.10
Cocorná	05197	0.15	0.20	Intermediate	0.11	0.06
Concepción	05206	0.15	0.20	Intermediate	0.10	0.05
Concordia	05209	0.25	0.25	High	0.15	0.08
Copacabana	05212	0.15	0.20	Intermediate	0.12	0.06
Dabeiba	05234	0.25	0.30	High	0.13	0.08
Don Matías	05237	0.15	0.20	Intermediate	0.10	0.05
Ebéjico	05240	0.15	0.25	High	0.15	0.08
El Bagre	05250	0.15	0.15	Intermediate	0.07	0.04
Entrerríos	05264	0.15	0.20	Intermediate	0.11	0.06
Envigado	05266	0.15	0.20	Intermediate	0.13	0.07
Fredonia	05282	0.20	0.25	High	0.16	0.09
Frontino	05284	0.30	0.30	High	0.15	0.09
Giraldo	05306	0.20	0.25	High	0.12	0.07
Girardota	05308	0.15	0.20	Intermediate	0.11	0.06
Gómez Plata	05310	0.15	0.20	Intermediate	0.08	0.04
Granada	05313	0.15	0.20	Intermediate	0.10	0.05
Guadalupe	05315	0.15	0.20	Intermediate	0.08	0.04
Guarne	05318	0.15	0.20	Intermediate	0.12	0.06
Guatapé	05321	0.15	0.20	Intermediate	0.10	0.05
Heliconia	05347	0.15	0.25	High	0.16	0.08
Hispania	05353	0.25	0.30	High	0.16	0.10
Itagüí	05360	0.15	0.20	Intermediate	0.14	0.08
Ituango	05361	0.20	0.20	Intermediate	0.09	0.05
Jardín	05364	0.25	0.30	High	0.20	0.11
Jericó	05368	0.25	0.25	High	0.18	0.10
La Ceja	05376	0.15	0.20	Intermediate	0.13	0.07
La Estrella	05380	0.15	0.25	High	0.15	0.08
La Pintada	05390	0.25	0.25	High	0.16	0.09
La Unión	05400	0.15	0.20	Intermediate	0.12	0.06
Liborina	05411	0.15	0.20	Intermediate	0.14	0.07
Maceo	05425	0.15	0.20	Intermediate	0.11	0.06
Marinilla	05440	0.15	0.20	Intermediate	0.11	0.06
Montebello	05467	0.20	0.25	High	0.14	0.08
Murindó	05475	0.35	0.35	High	0.25	0.13
Mutatá	05480	0.25	0.30	High	0.16	0.09
Nariño	05483	0.20	0.20	Intermediate	0.12	0.07
Nechí	05495	0.15	0.15	Intermediate	0.05	0.03
Necoclí	05490	0.20	0.20	Intermediate	0.15	0.07
Olaya	05501	0.15	0.20	Intermediate	0.15	0.07
Peñol	05541	0.15	0.20	Intermediate	0.10	0.05
Peque	05543	0.20	0.25	High	0.11	0.06
Pueblorrico	05576	0.25	0.25	High	0.17	0.10
Puerto Berrío	05579	0.15	0.15	Intermediate	0.11	0.06
Puerto Nare	05585	0.15	0.20	Intermediate	0.11	0.06
Puerto Triunfo	05591	0.15	0.20	Intermediate	0.09	0.05
Remedios	05604	0.15	0.20	Intermediate	0.15	0.07
Retiro	05607	0.15	0.20	Intermediate	0.13	0.07
Rionegro	05615	0.15	0.20	Intermediate	0.12	0.06
Sabanalarga	05628	0.20	0.20	Intermediate	0.13	0.07
Sabaneta	05631	0.15	0.20	Intermediate	0.14	0.08
Salgar	05642	0.25	0.25	High	0.15	0.09
San Andrés	05647	0.15	0.20	Intermediate	0.12	0.06
San Carlos	05649	0.15	0.20	Intermediate	0.10	0.06
San Francisco	05652	0.15	0.20	Intermediate	0.13	0.07
San Jerónimo	05656	0.15	0.20	Intermediate	0.15	0.08
San José de la Montaña	05658	0.15	0.20	Intermediate	0.12	0.06
San Juan de Urabá	05659	0.10	0.20	Intermediate	0.06	0.03
San Luis	05660	0.15	0.25	High	0.12	0.06
San Pedro	05664	0.15	0.20	Intermediate	0.12	0.06
San Pedro de Urabá	05665	0.15	0.20	Intermediate	0.06	0.04
San Rafael	05667	0.15	0.20	Intermediate	0.09	0.05
San Roque	05670	0.15	0.20	Intermediate	0.08	0.05
San Vicente	05674	0.15	0.20	Intermediate	0.11	0.06
Santa Bárbara	05679	0.20	0.25	High	0.16	0.09
Santa Rosa de Osos	05686	0.15	0.20	Intermediate	0.10	0.05
Santafé de Antioquia	05042	0.20	0.20	Intermediate	0.13	0.07
Santo Domingo	05690	0.15	0.20	Intermediate	0.09	0.05
Santuario	05697	0.15	0.20	Intermediate	0.11	0.06
Segovia	05736	0.15	0.20	Intermediate	0.10	0.05
Sonsón	05756	0.15	0.20	Intermediate	0.12	0.07
Sopetrán	05761	0.15	0.20	Intermediate	0.15	0.08
Támesis	05789	0.25	0.25	High	0.16	0.09
Tarazá	05790	0.15	0.20	Intermediate	0.08	0.04
Tarso	05792	0.25	0.25	High	0.16	0.09
Titiribí	05809	0.20	0.20	Intermediate	0.15	0.08
Toledo	05819	0.15	0.20	Intermediate	0.13	0.07
Turbo	05837	0.25	0.25	High	0.13	0.07
Uramita	05842	0.25	0.25	High	0.12	0.07
Urrao	05847	0.30	0.30	High	0.17	0.10
Valdivia	05854	0.15	0.20	Intermediate	0.11	0.05
Valparaíso	05856	0.25	0.25	High	0.15	0.09
Vegachí	05858	0.15	0.20	Intermediate	0.08	0.05
Venecia	05861	0.20	0.25	High	0.15	0.08
Vigía del Fuerte	05873	0.35	0.35	High	0.22	0.12
Yalí	05885	0.15	0.20	Intermediate	0.09	0.05
Yarumal	05887	0.15	0.20	Intermediate	0.09	0.05
Yolombó	05890	0.15	0.20	Intermediate	0.08	0.04
Yondó	05893	0.15	0.15	Intermediate	0.06	0.04
Zaragoza	05895	0.15	0.20	Intermediate	0.05	0.03

What does it mean for design in Antioquia?

Municipalities in the high hazard zone. In reinforced concrete, the NSR-10 only accepts systems with special energy dissipation capacity (DES) in the high hazard zone, the most demanding detailing in the code: confinement of columns and joints, and strict drift control.

Municipalities in the intermediate hazard zone. In reinforced concrete, the intermediate hazard zone no longer allows minimum dissipation (DMI): the structure is designed with moderate (DMO) or special (DES) energy dissipation capacity, with more reinforcement detailing requirements.

The municipality's value is only the starting point: the soil profile sets the coefficients Fa and Fv, and the occupancy group sets the importance factor. Work out the full spectrum with the NSR-10 design spectrum, or look up another municipality in the seismic hazard tool.

What the code requires in Medellín, with each city's soil and environment, is on its structural engineering page.

Frequently asked questions

What seismic hazard zone is Medellín in?

In the intermediate seismic hazard zone: Aa = 0.15 and Av = 0.20, according to Appendix A-4 of the NSR-10.

Which municipalities of Antioquia have the highest seismic hazard?

The department's highest coefficient, 0.35, is found in Murindó and Vigía del Fuerte.

How many municipalities of Antioquia are in each seismic hazard zone?

Of 125 municipalities, 45 are in the high hazard zone, 80 in the intermediate zone and 0 in the low zone (NSR-10, Appendix A-4).

Last updated: October 6, 2026

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Seismic hazard in Antioquia

Municipalities of Antioquia

What does it mean for design in Antioquia?

Frequently asked questions

Other departments

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