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Seismic intensity scale used to quantify the degree of shaking during earthquakes
The Modified Mercalli intensity scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic
Modified Mercalli intensity scale
Modified_Mercalli_intensity_scale
Intensity of ground shaking during an earthquake
the Modified Mercalli intensity scale (MMS) and the evaluations of the seismic intensities are more reliable. In addition, more intensity scales have
Seismic_intensity_scales
Japanese earthquake measurements
the Mercalli scale, the JMA scale measures the intensities of ground shaking at various observation points within the affected area. Intensities are expressed
Japan Meteorological Agency seismic intensity scale
Japan_Meteorological_Agency_seismic_intensity_scale
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2026
Italian volcanologist and priest (1850–1914)
Giuseppe Mercalli (21 May 1850 – 19 March 1914) was an Italian volcanologist and Catholic priest. He is known best for the Mercalli intensity scale for measuring
Giuseppe_Mercalli
Earthquake shaking
instrument-readings. The old Modified Mercalli intensity scale (MM), a relic of the pre-instrument days, remains useful in the sense that each intensity-level provides
Strong_ground_motion
Earthquake intensity scale
application of the Modified Mercalli intensity scale and the 1953 version of the Medvedev scale, known also as the GEOFIAN scale. With minor modifications
Medvedev–Sponheuer–Karnik scale
Medvedev–Sponheuer–Karnik_scale
Earthquake in Japan on January 17, 1995
moment magnitude scale and had a maximum intensity of 7 on the JMA Seismic Intensity Scale (XI on the Modified Mercalli intensity scale). The tremors lasted
1995_Hanshin_earthquake
scale. Shaking was intense with an assigned Rossi–Forel intensity of VII (Very strong tremor) and intensity of VI (Strong) on the Modified Mercalli intensity
1938_Banda_Sea_earthquake
seismometers, the Richter scale, and the Modified Mercalli intensity scale (an updated version of the Mercalli intensity scale). In 1933, the Long Beach
List of earthquakes in California
List_of_earthquakes_in_California
Tropical cyclone intensity scale
scale for describing the likely effects of a hurricane. By using subjective damage-based scales for earthquake intensity like the Modified Mercalli intensity
Saffir–Simpson_scale
Magnitude 6.7 earthquake in the Philippines
7 or Mw 6.8. It had a maximum perceived intensity of VIII (Severe) on the Modified Mercalli Intensity Scale. At least eleven people were killed and another
November 2023 Mindanao earthquake
November_2023_Mindanao_earthquake
Earthquake in Mongolia
1957, measuring Mw 7.8–8.1 and assigned XII (Extreme) on the Modified Mercalli intensity scale. Surface faulting was observed in the aftermath with peak
1957_Mongolia_earthquake
American seismologist (1879–1958)
another seismologist, redeveloped and updated the Mercalli intensity scale, a seismic intensity scale that is still in use as a primary means of rating
Harry_O._Wood
Earthquake in South Korea
(US$290 million) in damage.". It also recorded a VII intensity on the Modified Mercalli intensity scale, making it the second largest earthquake in recorded
2017_Pohang_earthquake
Emergency magnitude measure
Beaufort scale 1931 Modified Mercalli intensity scale 1935 Richter scale (superseded by the Moment magnitude scale) 1969 Saffir–Simpson scale 1971 Fujita
Rohn_emergency_scale
Measure of the strength of earthquakes
Richter scale becomes meaningless. The Richter and MMS scales measure the energy released by an earthquake; another scale, the Mercalli intensity scale, classifies
Richter_scale
Topics referred to by the same term
of the TV series Black Sails VIII (Severe), a level on the Modified Mercalli intensity scale This disambiguation page lists articles associated with the
VIII_(disambiguation)
Maximum ground acceleration during an earthquake at a location
given geographic point. The Mercalli intensity scale uses personal reports and observations to measure earthquake intensity but PGA is measured by instruments
Peak_ground_acceleration
Most powerful earthquake in Turkish history
in the range 7.8–8.0 Ms and the maximum felt intensity was IX on the Modified Mercalli intensity scale. The epicenter of the earthquake was on the southern
1668 North Anatolia earthquake
1668_North_Anatolia_earthquake
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2025
Mw 7.6 earthquake in Hebei, China
(19:42:55, 27 July UTC) 1976. The maximum intensity of the earthquake was XI (Extreme) on the Mercalli scale. In minutes, 85 percent of the buildings in
1976_Tangshan_earthquake
Earthquakes in Italy
Benevento, southern Italy. Earning a level of XI (Extreme) on the Modified Mercalli intensity scale, the earthquake caused widespread destruction in central and
1456 Central Italy earthquakes
1456_Central_Italy_earthquakes
Earthquake in Japan
States Geological Survey, with a maximum intensity assigned IX (Violent) on the Modified Mercalli intensity scale. According to the Japan Meteorological
2014_Nagano_earthquake
Earthquake in Mexico
magnitude of 7.6 Mw and a maximum perceived intensity of VII (very strong) on the Modified Mercalli intensity scale. Mexico City and Chilpancingo were particularly
1957_Guerrero_earthquake
Earthquake and tsunami in eastern Canada
the United States Geological Survey created an intensity map by using the Revised Modified Mercalli scale. The tsunami waves had an amplitude of 3–8 metres
1929_Grand_Banks_earthquake
Shindo scale is commonly used to measure earthquakes by seismic intensity instead of magnitude. This is similar to the Modified Mercalli intensity scale used
List_of_earthquakes_in_Japan
are listed according to UTC time. Maximum intensities are indicated on the Modified Mercalli intensity scale, and all data are sourced from the United
List_of_earthquakes_in_1998
Earthquake in Kashmir
maximum felt intensity of VII (Very strong) on the Modified Mercalli intensity scale or VIII (Heavily damaging) on the European macroseismic scale. There was
2019_Kashmir_earthquake
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2024
Earthquake in the Department of Loreto, Peru
local time. It had a maximum perceived intensity of VII (Very strong) on the Modified Mercalli intensity scale in the towns of Yurimaguas and Lagunas
2019_Peru_earthquake
Earthquake in British India
since 1762. It was assigned a maximum of XI (Extreme) on the Modified Mercalli intensity scale, and was felt in Rangoon and Bhamo. Damage was enormous in
1839_Ava_earthquake
Earthquake in the Philippines
severity of strong ground motion was assigned VI (Strong) on the Modified Mercalli intensity scale. A total of 106 schools, 119 houses, and 14 other infrastructures
July_2019_Cotabato_earthquake
Earthquake in Venezuela
moment magnitude (Mw) of 7.6 and the intensity of shaking reached X (extreme) on the Modified Mercalli intensity scale. The Mérida Andes mark the boundary
1894_Mérida_earthquake
described using a descriptive scale like the Modified Mercalli intensity scale or the Medvedev–Sponheuer–Karnik scale. Zone 5 covers the areas with the
Earthquake_zones_of_India
Earthquake in the Philippines
measuring 6.8 Mww. It had a maximum perceived intensity of VII (Very strong) on the Modified Mercalli Intensity Scale. At least 13 people were killed and another
2019_Davao_del_Sur_earthquake
Earthquake in Italy
intense ground shaking that was assigned XI (Extreme) on the Modified Mercalli intensity scale. Between 2,313 and 3,100 people were killed, and there was
1883_Casamicciola_earthquake
Seismologist and physicist (1900–1985)
from the original (PDF) on July 30, 2013. Biography portal Modified Mercalli intensity scale Seismicity Macroseismic magnitude Richter, a character from
Charles_Richter
Earthquake in South Africa
a magnitude of 6.3 Mw and a maximum felt intensity of VIII (Severe) on the Modified Mercalli intensity scale. It caused widespread damage in the towns
1969_Tulbagh_earthquake
Earthquakes on the eastern Adriatic coast
moment magnitude scale. The first tremor was assigned VIII (Severe), and the second event IX (Violent) on the Modified Mercalli intensity scale. The earthquakes
1962_Makarska_earthquakes
are listed according to UTC time. Maximum intensities are indicated on the Modified Mercalli intensity scale, and all data are sourced from the United
List_of_earthquakes_in_1997
Earthquake in the Philippines
+8). It measured 7.4 Mw and had a maximum intensity of IX (Violent) on the Modified Mercalli intensity scale. The Philippine Institute of Volcanology and
1973_Ragay_Gulf_earthquake
Earthquake in Guatemala
moment magnitude of 6.2 and reached a peak intensity of VI (Strong) on the Modified Mercalli Intensity scale. Damage was widespread but light in and around
2022_Guatemala_earthquake
Violent earthquake in eastern Turkey
catalogs place the surface-wave magnitude at Ms 7.4 and maximum Modified Mercalli intensity scale assigned IX (Violent). The area lies near the triple junction
1840_Ararat_earthquake
Earthquake on the island of Java in 1834
1834. It was assigned VIII (Severe) to IX (Violent) on the Modified Mercalli intensity scale. It was preceded by a number of strongly felt foreshocks the
1834_Java_earthquake
Earthquake in Japan
reverse-faulting shock achieved a maximum JMA seismic intensity of Shindo 7 and Modified Mercalli intensity of X–XI (Extreme). The shaking and accompanying
2024_Noto_earthquake
Earthquake in Northwestern Albania
northeast of the epicentre. The maximum felt intensity was VIII (Severe) on the Modified Mercalli intensity scale. A total of 51 people were killed in the
2019_Albania_earthquake
Earthquake that occurs at the boundary between two tectonic plates
the intensity of intraplate earthquakes exceed those of interplate earthquakes by nearly two points. Using the Modified Mercalli Intensity scale, earthquakes
Interplate_earthquake
Earthquakes in California
20:57 PST. Both shocks were assigned VIII (Severe) on the Modified Mercalli intensity scale. Heavy damage occurred in the areas of Mexicali and El Centro
1915 Imperial Valley earthquakes
1915_Imperial_Valley_earthquakes
Fatal disaster in southern Japan
reported a Modified Mercalli intensity of III (Weak) in Busan, South Gyeongsang Province, South Jeolla Province, Gwangju, and Jeju Province. Intensity II (Weak)
2026_Kumamoto_earthquake
Place
regions, which corresponds to Miri and Bintulu Divisions with Modified Mercalli intensity scale (MMI) of 3.5 to 5.3 magnitude. The population of Miri Division
Miri_Division
1932 earthquake in northern Iran
focal depth of 12 km (7.5 mi), and a maximum intensity of VIII on the Modified Mercalli intensity scale. The event was listed in the historical database
1932_Mazandaran_earthquake
Lake in Aghios Nikolaos, Crete, Greece
magnitude was not recorded, it was listed as grade XI on the Modified Mercalli Intensity Scale, one grade down from the maximum possible. This earthquake
Lake_Voulismeni
Earthquake impacting Myanmar and Thailand
The shaking caused by this strike-slip shock reached a maximum Modified Mercalli intensity of X (Extreme). It was the most powerful earthquake to strike
2025_Myanmar_earthquake
2022 earthquake in Mexico
26.9 km (16.7 mi), resulting in a maximum intensity of VIII (Severe) on the Modified Mercalli intensity scale. The USGS reported the epicentre was 35 km
2022_Michoacán_earthquake
1536 earthquake in China
magnitude of 7.3 Ms. It had a maximum felt intensity of X (Extreme) on the Modified Mercalli intensity scale, and caused thousands of deaths. Xichang lies
1536_Xichang_earthquake
Earthquake in Venezuela
located offshore in the Caribbean Sea, and had a maximum Modified Mercalli intensity scale rating of IX (Violent). It lasted 30 seconds, causing major
1929_Cumaná_earthquake
Philippine seismic intensity scale
The PHIVOLCS earthquake intensity scale (PEIS; Filipino: Panukat ng Pagyanig ng Lindol) is a seismic scale used and developed by the Philippine Institute
PHIVOLCS Earthquake Intensity Scale
PHIVOLCS_Earthquake_Intensity_Scale
Earthquake in China
assigned a maximum intensity of X in Machali, Maduo County on the China seismic intensity scale and Modified Mercalli intensity scale. This earthquake was
2021_Maduo_earthquake
Earthquakes in Bulgaria
and 7.2 on the surface wave magnitude scale, and were assigned the respective Modified Mercalli intensity scale ratings of X (Extreme) and XI (Extreme)
1904_Kresna_earthquakes
Magnitude 7.6 Ms. earthquake in China
magnitude of 7.6 Ms. The earthquake had a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale. It resulted in between 2,175 and 2,204 deaths
1973_Luhuo_earthquake
Earthquake in California
confirming previous estimates. The shaking intensity as described on the Modified Mercalli intensity scale reached XI (Extreme) in San Francisco and areas
1906_San_Francisco_earthquake
Topics referred to by the same term
Supplementary Service Data § Man-Machine Interface Modified Mercalli intensity scale, an earthquake intensity measure W3C MMI or Multimodal Interaction Activity
MMI
Magnitude 8.0 earthquake in China
which CSIS drew reference. (USGS, using the Modified Mercalli intensity scale (CC), also placed maximum intensity at XI, "extreme".) Two south-west-north-east
2008_Sichuan_earthquake
Capital and largest city of North Macedonia
this earthquake to have been a Category XII (Extreme) on the Modified Mercalli intensity scale, although others believe this is an overestimate. In 1623–1624
Skopje
Earthquakes in Vanuatu
magnitude of 7.2 Mw and a maximum intensity of X (Extreme) west of the island on the Modified Mercalli intensity scale. There are no exact estimates on
2002_Port_Vila_earthquake
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2001
Earthquake
houses in Soiron demonstrate an earthquake intensity of VIII (Severe) on the Modified Mercalli intensity scale for the area. Populations would have experienced
1692 Northwestern Europe earthquake
1692_Northwestern_Europe_earthquake
Earthquake in Greece
magnitude 6.4 Mw earthquake with a maximum intensity of VIII (Severe) on the Modified Mercalli Intensity Scale which occurred on 12 October 2021, 12:24
2021_Lasithi_earthquake
Earthquake in Southwest Papua, Indonesia
maximum intensity of VI (Strong) on the Modified Mercalli intensity scale and a second event measuring Mw 7.4 and a maximum Mercalli intensity of VII (Very
2009_West_Papua_earthquakes
M 6.0 earthquake in Mindanao, Philippines
event registered a Modified Mercalli Intensity Scale (MMI) of VII (Very Strong) with VII on the PHIVOLCS Earthquake Intensity Scale (PEIS). The Philippines
2021_Davao_del_Sur_earthquake
Earthquake in Turkey
time (07:11:28 UTC). It had a maximum felt intensity of IX (Violent) on the Modified Mercalli intensity scale. It caused the deaths of 46 people and a further
2002_Afyon_earthquake
City in Kamchatka Krai, Russia
285 miles (460 km) away from the epicenter, the intensity was felt as a Modified Mercalli intensity scale V (moderate); objects fell in buildings and people
Petropavlovsk-Kamchatsky
Earthquake in Altai Republic, Russia
moment magnitude of 7.3 and a maximum intensity of shaking of X (Extreme) on the Modified Mercalli intensity scale. The epicenter of this oblique-slip shock
2003_Altai_earthquake
Seismic event
1 Mw and caused shaking that reached IX (Violent) on the Modified Mercalli intensity scale. It is thought to have been caused by rupture of the Bhutan
1714_Bhutan_earthquake
Earthquake and tsunami affeting Central America
evaluated the shaking in San Salvador to be II (Weak) on the Modified Mercalli intensity scale. Similarly, witnesses of the 1992 shock described weak shaking
2012_El_Salvador_earthquake
Earthquakes in the Kamchatka Peninsula, far eastern Russia
460 kilometres (290 mi) from the epicenter, the intensity was felt as a Modified Mercalli intensity scale V (moderate); objects fell inside buildings, and
Kamchatka_earthquakes
Earthquake struck the Sea of Marmara, Turkey on August 9, 1912
estimated magnitude of 7.4 Mw and a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale, causing from 216 to 3,000 casualties. The
1912_Mürefte_earthquake
a period of a few days. The maximum felt intensity was VIII (Severe) on the Modified Mercalli Intensity Scale and it led to between 400 and 1,100 deaths
1951_El_Salvador_earthquake
July 4–5, 2019, earthquakes in California
an alert was an expected shaking intensity in Los Angeles County of 4 (IV) on the Modified Mercalli Intensity Scale, what is considered "light shaking"
2019_Ridgecrest_earthquakes
Earthquake in Mindanao, Philippines
4 on the moment magnitude scale and assigned a maximum intensity of VIII (Severe) on the Modified Mercalli intensity scale was one of the largest to hit
1955_Lanao_earthquake
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2004
Significant earthquake Guangdong province China 13 July 1605
estimated magnitude of 7.5 Ms with a maximum felt intensity of X (Extreme) on the Modified Mercalli intensity scale. It caused widespread damage, including the
1605_Guangdong_earthquake
are listed according to UTC time. Maximum intensities are indicated on the Modified Mercalli intensity scale and are sourced from United States Geological
List_of_earthquakes_in_1988
Earthquake in Guangdong, China
to have caused damage. It was estimated to reach intensity VII on the Modified Mercalli intensity scale, Since the Royal Observatory, Hong Kong did not
1918_Shantou_earthquake
town of Lamas. It had a maximum perceived intensity of VI (Strong) on the Modified Mercalli Intensity Scale. A 7,000 km (4,300 mi) convergent boundary
2005_Northern_Peru_earthquake
Earthquake off the coast of Indonesia
had a magnitude of 7.1 Mw and a maximum felt intensity of VIII on the Modified Mercalli intensity scale. It triggered a major tsunami that caused significant
1969_Sulawesi_earthquake
Damaging earthquake doublet in northern California
seismic scale that is based on an isoseismal map or the event's felt area, the 6.4 M and 6.2 M events were assigned a maximum Mercalli intensity of IX (Violent)
1892 Vacaville–Winters earthquakes
1892_Vacaville–Winters_earthquakes
are listed according to UTC time. The maximum intensities are based on the Modified Mercalli intensity scale. Earthquake magnitudes are based on data from
List_of_earthquakes_in_2003
Earthquake in Venezuela
the earthquake resulted in shaking as high as IX on the Modified Mercalli intensity scale, covering a 3,560 km2 region around the epicenter. The seaside
1900_San_Narciso_earthquake
7.2-magnitude earthquake in Tiburon Peninsula, Haiti
Haiti earthquake According to the USGS PAGER service, the Modified Mercalli intensity scale (MMI) of the earthquake reached VII (Very Strong) in Les Cayes
2021_Haiti_earthquake
Earthquake in Cyprus
on the surface-wave magnitude scale, and had a maximum intensity of X (Extreme) on the Modified Mercalli intensity scale. The epicenter of this earthquake
1953_Paphos_earthquake
Series of water waves
Sieberg-Ambraseys scale (1962), used in the Mediterranean Sea and the Imamura-Iida intensity scale (1963), used in the Pacific Ocean. The latter scale was modified by
Tsunami
dates are listed according to UTC time. Maximum intensities are based on the Modified Mercalli intensity scale. The year 2022 was moderately active for earthquakes
List_of_earthquakes_in_2022
Earthquake affecting Taiwan
areas of Taiwan felt shaking of between V and VII on the Modified Mercalli intensity scale. The shaking was also felt in southeast China, the island
1920_Hualien_earthquake
Earthquake in New Zealand
least four earthquakes measuring at least V (moderate) on the modified Mercalli intensity scale. The earthquake struck Dunedin at approximately 7:49 pm on
1974_Dunedin_earthquake
Earthquake in Myanmar
magnitude scale. It had an epicenter in near the city of Pyay (Prome), Bago. The shock was felt with a maximum Modified Mercalli intensity of XI (Extreme)
1858_Prome_earthquake
Earthquake in the Philippines
depth of 16.7 km (10.4 mi). It had a maximum intensity of VI (Strong) on the Modified Mercalli intensity scale, and was located 1 km north-northeast of Bagong
1988_Mindoro_earthquake
Earthquake in Myanmar
the shaking reached VIII (Severe) to IX (Violent) on the Modified Mercalli intensity scale. List of earthquakes in 1956 List of earthquakes in Myanmar
1956_Sagaing_earthquake
Natural disaster
earthquake had a maximum intensity of VI or has caused "Strong" shaking according to the Modified Mercalli intensity scale. No tsunami warning was raised
2019_Batanes_earthquake
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