Significant Earthquakes of the World
1984
SIGNIFICANT EARTHQUAKES OF THE WORLD, 1984
Earthquakes of magnitude 6.5 or greater or ones that caused fatalities,
injuries or substantial damage.
DATE ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDES SD NO. REGION, CONTRIBUTED MAGNITUDES AND COMMENTS
UTC COORDINATES GS STA
HR MN SEC LAT LONG MB Msz USED
1984
DATE ORIGIN TIME GEOGRAPHIC DEPTH MAGNITUDES SD NO. REGION, CONTRIBUTED MAGNITUDES AND COMMENTS
UTC COORDINATES GS STA
HR MN SEC LAT LONG MB Msz USED
Jan 1 09 03 38.8 33.68 N 136.89 E 368 6.5 1.2 412 NEAR SOUTH COAST OF SOUTHERN HONSHU, JAPAN.
mb 6.6 (BRK), 6.6 (PAL). Mo=6.7*10**19 Nm (GS).
Mo=6.0*10**19 Nm (HRV). Felt from Hokkaido to
Kyushu. The focal mechanism is moderately well
controlled and corresponds to reverse faulting.
Jan 8 15 24 13.5 2.82 S 118.81 E 33 N 6.0 6.6 1.3 240 SULAWESI. Ms 6.7 (BRK). Mo=3.8*10**19 Nm (GS).
Mo=1.5*10**19 Nm (HRV). Two people killed, 23
injured, and damage to buildings in the Mamuju
area. The focal mechanism is poorly controlled
and corresponds to reverse faulting.
Jan 25 19 36 12.0& 47.50 N 116.00 W 1 G 4 WESTERN IDAHO. . ML 2.3 (NEIS). One person
killed and one injured. Rockburst in the Lucky
Friday mine near Wallace, Idaho.
Feb 1 14 22 07.9 34.62 N 70.48 E 33 N 5.9 5.8 1.2 298 AFGHANISTAN. Mo=1.1*10**18 Nm (GS).
Mo=1.4*10**18 Nm (HRV). One person killed, 35
injured, and damage in the Jalalabad area. Felt
(IV) in the Ishkashim-Khorog area, USSR. Felt
also in northwestern Pakistan.
Feb 7 21 33 21.4 10.01 S 160.47 E 18 D 6.6 7.5 1.4 318 SOLOMON ISLANDS. Ms 7.5 (BRK), 7.7 (PAL),
7.3 (PAS). Mo=5.1*10**19 Nm (GS).
Mo=2.5*10**20 Nm (HRV). Damage in southern
Guadalcanal and some landslides reported. Felt
throughout the Solomon Islands, (VI) at Honiara,
and (III) at Rabaul, New Britain. The focal
mechanism is poorly controlled and corresponds
to reverse faulting.
Feb 13 16 53 00.7 35.50 N 139.10 E 47 5.3 4.8 1.0 199 NEAR SOUTH COAST OF HONSHU, JAPAN. Two people
injured and slight damage in the Tokyo area.
Felt (III JMA) in the Tokyo-Yokohama area and
at Kofu, and (II JMA) in the Kumagaya-Mishima
area and on Oshima.
Mar 3 08 32 15.5 43.31 N 20.98 E 10 G 4.6 1.1 98 YUGOSLAVIA. ML 4.2 (TIR), 4.0 (TTG). Three
people injured slightly and damage in southeastern
Yugoslavia.
Mar 5 03 33 50.9 8.15 N 123.76 E 649 D 6.5 0.9 489 MINDANAO, PHILIPPINE ISLANDS. mb 6.6 (BRK).
Mo=9.4*10**19 Nm (GS). Mo=9.3*10**19 Nm (HRV).
Felt (II RF) on Mindanao, Leyte, and Panay.
The focal mechanism is well controlled and
corresponds to normal faulting.
Mar 6 02 17 21.2 29.38 N 138.94 E 457 D 6.2 1.0 477 SOUTH OF HONSHU, JAPAN. mb 6.6 (BRK).
Mo=1.3*10**20 Nm (GS). Mo=1.4*10**20 Nm (HRV).
One person died from a heart attack in Yokohama
and one person injured in the Tokyo area. Felt
(IV JMA) on Honshu. The focal mechanism is
moderately well controlled and corresponds to
reverse faulting.
Mar 19 20 28 38.2 40.32 N 63.35 E 15 D 6.5 7.0 0.9 427 UZBEK SSR. Ms 7.1 (BRK). Mo=4.0*10**19 Nm (GS).
Mo=3.1*10**19 Nm (HRV). At least 100 people
injured and extensive damage (IX) in the Gazli area. Damage (VIII) at Dzhangeldy and (VII) in the Bukhara area.
Felt (VI) at Samarkand, (V) at Dzhizak, and (IV) at Tashkent. Felt (VI) at Mary and (V) at Ashkhabad, Turkmeniya.
Felt (III) at Leninabad and (II) at Khorog, Tajikistan. Felt (III) at Chimkent, Kazakhstan. Felt (II) at Frunze,
Kirghiziya. Also felt at Mashhad, Iran. The focal mechanism is poorly controlled and corresponds to reverse
faulting.
Mar 24 09 44 02.6 44.12 N 148.19 E 44 D 6.1 7.0 1.2 400 KURIL ISLANDS. Ms 6.7 (BRK).
Mo=6.4*10**19 Nm (HRV). Possible multiple event.
Felt (V) at Yuzhno-Kurilsk and (IV) on Shikotan.
Felt (II JMA) at Nemuro, Obihiro and Urakawa,
Hokkaido, and at Hachinohe and Miyako, Honshu.
Fourteen-centimeter tsunami recorded at Nemuro,
Hokkaido. The focal mechanism is poorly controlled
and corresponds to reverse faulting.
Mar 27 20 06 33.2 4.65 S 145.81 E 28 5.8 6.6 1.2 194 NEAR NORTH COAST OF NEW GUINEA, PAPUA NEW GUINEA.
Ms 6.8 (BRK). Mo=4.9*10**18 Nm (GS).
Mo=5.6*10**18 Nm (HRV). Eleven people injured
and many buildings destroyed (VIII) on Karkar.
Minor ground fissures and two holes 3-7 meters
in diameter and 2 meters deep occurred. The focal
mechanism is moderately well controlled and
corresponds to strike-slip faulting.
Apr 22 17 39 23.1 43.62 N 10.19 E 15 4.3 1.1 83 CENTRAL ITALY. ML 4.7 (KBA), 4.3 (TRI),
4.2 (LDG). Three people died of heart attacks.
Damage (VI) in the Livorno-Pisa area.
Apr 24 21 15 19.0& 37.32 N 121.70 W 8 G 5.7 6.1 273 CENTRAL CALIFORNIA. ML 6.2 (BRK).
Mo=6.9*10**18 Nm (GS). Mo=2.1*10**18 Nm (HRV).
Twenty-one people sustained minor injuries in the Morgan Hill-San Jose area. Maximum intensity VII in the
Morgan Hill area. Damage from the earthquake estimated at 7.5 million dollars with the most damage occurring
in the Jackson Oaks subdivision east of Morgan Hill. The earthquake was felt from Bakersfield to Sacramento
and from San Francisco to Reno. The focal mechanism is moderately well controlled and corresponds to strike-slip
faulting.
Apr 29 05 03 00.0 43.26 N 12.56 E 12 5.2 5.3 1.3 202 CENTRAL ITALY. ML 6.1 (FUR), 5.6 (TRI).
Mo=3.4*10**17 Nm (HRV). Thirty-six people
injured and extensive damage (VIII) in the
Assisi-Gubbio-Perugia area. About 7,500 people
homeless. Felt strongly in central Italy.
May 7 17 49 41.6 41.77 N 13.90 E 10 G 5.5 5.8 1.2 302 SOUTHERN ITALY. Ms 5.8 (BRK), ML 6.0 (TRI).
Mo=7.8*10**17 Nm (HRV). Three people killed,
at least 100 injured, and extensive damage
(VIII) in the Abruzzo area. Felt throughout
southern Italy.
May 11 10 41 49.9 41.83 N 13.96 E 14 5.2 5.2 1.2 259 SOUTHERN ITALY. ML 5.4 (TRI).
Mo=2.0*10**17 Nm (HRV). Three people died
from heart attacks, at least 63 injured, and
damage (VIII) in the Abruzzo region. Felt at
Rome and Naples.
May 13 12 45 55.8 42.97 N 17.73 E 30 5.1 5.1 1.2 190 ADRIATIC SEA. Mo=1.7*10**17 Nm (HRV).
One person killed from rockfalls in the
Hercegovina region of Yugoslavia. Felt (VII)
at Dubrovnik and (IV) at Titograd, Yugoslavia
and (III) at Trieste, Italy.
May 21 15 38 58.7 32.69 N 121.51 E 18 5.7 6.0 1.3 187 EASTERN CHINA. Ms 5.8 (BRK).
Mo=1.3*10**18 Nm (GS). Mo=1.2*10**18 Nm (HRV).
Several people injured jumping from buildings
and slight damage in the southern Shanghai-Rudong
area. Felt throughout southern Jiangsu Province
and at Hefei. Felt on about 200 fishing boats
in the Yellow Sea. The focal mechanism is
moderately well controlled and corresponds to
strike-slip faulting.
May 26 03 58 56.9 43.55 S 38.94 E 10 G 5.7 6.4 1.3 135 PRINCE EDWARD ISLAND REGION. Ms 6.5 (PAS).
Mo=1.3*10**19 Nm (HRV). Possibly felt on Marion
Island.
May 30 00 39 45.2 34.89 N 134.60 E 26 5.0 4.5 1.3 122 NEAR SOUTH COAST OF SOUTHERN HONSHU. One person
injured in Hyogo Prefecture. Felt (IV JMA) at
Himeji and (III JMA) in the Tottori-Kobe area,
Honshu and Takamatsu-Kochi area, Shikoku. Felt
throughout southwestern Honshu, northern Shikoku
and on Dago.
June 20 14 12 27.0& 46.58 N 80.80 W 1 G 5 ONTARIO. . mbLg 3.4 (OTT). Four miners
killed. Rockburst in the Falconbridge Mine.
June 24 11 17 11.9 17.98 N 69.34 W 24 6.0 6.7 1.0 331 DOMINICAN REPUBLIC REGION. Ms 6.6 (BRK).
6.3 (PAS), 6.5 (PAL). Mo=2.7*10**19 (GS).
Mo=1.4*10**19 Nm (HRV). Felt strongly (V) in the
Dominican Republic. Also felt on Puerto Rico and
at Caracas, Venezuela. The focal mechanism is
moderately well controlled and corresponds to
strike-slip faulting.
June 24 18 18 51.0 18.01 N 69.20 W 32 5.1 4.7 1.0 150 DOMINICAN REPUBLIC REGION. Mo=7.4*10**16 Nm (HRV).
Five people killed in the Bayaguana area. Felt
throughout eastern Dominican Republic.
July 2 04 50 44.1 16.80 N 98.44 W 47 5.9 6.0 1.0 231 NEAR COAST OF GUERRERO, MEXICO. Ms 6.5 (BRK),
5.8 (PAS). Mo=4.7*10**18 Nm (GS).
Mo=2.0*10**18 Nm (HRV). Minor damage at Mexico
City. The focal mechanism is moderately well
controlled and corresponds to reverse faulting.
July 5 05 21 48.9 6.06 S 154.42 E 33 N 6.0 6.5 1.1 238 SOLOMON ISLANDS. Ms 6.8 (BRK), 6.7 (PAS).
Mo=9.2*10**18 Nm (GS). Mo=9.0*10**18 Nm (HRV).
Felt (IV) on Bougainville. Sand blows reported
along the Jaba River. The focal mechanism is
moderately well controlled and corresponds to
reverse faulting.
July 19 06 56 10.4 52.88 N 4.20 W 13 5.0 4.7 1.1 158 UNITED KINGDOM. ML 5.4 (BGS). Minor injuries
and damage (VI) in northern Wales. Rockslides
occurred at Tremadoc, Gwynedd County, Wales.
Felt (V) in eastern Ireland. Felt throughout
Wales, in western England and in parts of
Scotland.
Aug 6 19 06 38.3 32.39 N 131.95 E 46 6.3 6.7 1.2 475 KYUSHU, JAPAN. Ms 6.9 (BRK).
Mo=1.7*10**19 Nm (GS). Mo=2.9*10**19 Nm (HRV).
Nine people injured slightly and damage (IV JMA)
on Kyushu. An 18-centimeter tsunami was
reported at Nobeoka. Felt also (IV JMA) in
southwestern Shikoku. The focal mechanism is
moderately well controlled and corresponds to
strike-slip faulting.
Aug 27 06 41 26.2 1.76 N 99.08 E 33 5.1 5.2 1.4 99 NORTHERN SUMATERA. Mo=3.0*10**17 Nm (HRV).
One hundred twenty-three people injured and 405
buildings damaged in the Tarutung area. Felt at
Kuala Lumpur and Pinang, Malaysia.
Sep 7 00 44 41.7 43.31 N 20.96 E 13 5.1 4.7 1.2 192 YUGOSLAVIA. ML 5.1 (SKO), 5.3 (TRI).
Mo=5.3*10**16 Nm (HRV). Two people injured
and damage (VIII) in in the Brus-Kopaonik area.
Felt widely in eastern Yugoslavia.
Sep 10 03 14 10.1 40.50 N 126.83 W 10 G 6.1 6.7 1.0 267 OFF COAST OF NORTHERN CALIFORNIA.
ML 6.6 (BRK). Mo=1.2*10**19 Nm (GS).
Mo=1.0*10**19 Nm (HRV). Felt (V) at Miranda, California and (IV) at Alderpoint, Branscomb, Comptche, Ferndale,
Findley, Salyer, Samoa, San Francisco, and Willits, California. Felt from the San Francisco Bay area to
Roseburg, Oregon. The focal mechanism is well controlled and corresponds to strike-slip faulting.
Sep 13 23 48 49.9 35.79 N 137.49 E 10 G 6.0 6.1 1.2 456 HONSHU, JAPAN. Ms 6.3 (BRK).
Mo=2.5*10**18 (GS). Mo=2.6*10**18 Nm (HRV).
At least 24 people killed and severe damage and landslides (IV JMA) in the Otaki area. Felt (IV JMA) at Iida
and and Kofu; (III JMA) in the Tokyo-Yokohama, Kyoto-Nagoya and Nagano-Toyama areas; (II JMA) at Tateyama,
Utsunomiya and on Oshima; (I JMA) at Ajiro, Mito, Aikawa and on Dogo. The focal mechanism is poorly controlled
and corresponds to reverse faulting.
Sep 18 13 26 01.8 40.89 N 42.22 E 10 G 5.3 6.4 1.2 195 TURKEY. Mo=2.2*10**17 Nm (HRV). Three people
killed, 38 injured, and 75,000 houses destroyed
or damaged in the Olur-Senkaya area.
Sep 18 17 02 44.3 34.01 N 141.50 E 48 6.6 6.9 1.0 524 OFF EAST COAST OF HONSHU, JAPAN. Ms 6.9 (BRK).
Mo=2.0*10**19 Nm (GS). Mo=2.1*10**19 Nm (HRV).
Felt (IV JMA) at Tateyama and (III JMA) at Tokyo.
Felt along the east coast of central and northern
Honshu. Also felt in southern Hokkaido. Local
tsunami reported: 11 cm on Hachijo-jima, 10 cm at
Ishinomaki, 5 cm at Onahama, and 3 cm at Tateyama.
The focal mechanism is moderately well controlled
and corresponds to normal faulting.
Sep 28 00 03 34.54 25.85 S 175.91 W 21 6.4 6.8 1.1 387 SOUTH OF TONGA ISLANDS. Ms 6.7 (BRK).
Mo=8.3*10**18 Nm (GS). Mo=7.8*10**18 Nm (HRV).
Felt on Raoul Island, Kermadec Islands. The focal
mechanism is poorly controlled and corresponds to
normal faulting.
Oct 9 04 30 42.4 37.01 N 21.76 E 27 5.0 4.5 1.3 192 SOUTHERN GREECE. ML 4.7 (ATH). One person injured
and many homes damaged in the Messina area.
Oct 12 18 21 47.3 16.68 S 177.11 E 13 5.6 6.1 1.1 158 FIJI ISLANDS. Ms 6.5 (BRK), 6.1 (PAS).
Mo=2.9*10**18 Nm (HRV). Felt (V) on Yasawa and
(IV) on Vanua Levu.
Oct 15 10 21 07.5 15.86 S 173.64 W 128 D 6.5 1.2 397 TONGA ISLANDS. mb 6.9 (BRK), 7.1 (PAS).
Mo=8.1*10**19 (GS). Mo=5.0*10**19 Nm (HRV).
Felt (V) at Apia, Samoa Islands. The focal
mechanism is poorly controlled and corresponds
to reverse faulting.
Oct 18 09 46 24.6 40.55 N 42.40 E 60 5.3 1.1 181 TURKEY. Mo=1.5*10**17 Nm (HRV). Three people
killed, 35 injured, and 75,000 homes damaged in
the Erzurum-Senkaya area.
Oct 25 01 11 54.2 37.74 N 15.41 E 33 N 4.4 0.9 25 SICILY. Twelve people injured and many homes
damaged.
Nov 1 04 48 50.2 8.19 N 38.79 W 10 G 6.5 7.1 1.0 373 CENTRAL MID-ATLANTIC RIDGE. Ms 7.4 (BRK),
6.9 (PAS). Mo=5.0*10**19 Nm (GS).
Mo=4.0*10**19 Nm (HRV). Felt in northeastern
Brazil. The focal mechanism is moderately well
controlled and corresponds to strike-slip
faulting.
Nov 14 11 58 18.3 17.13 N 73.82 E 10 G 4.6 0.8 28 INDIA. Two people injured slightly at Bombay.
Felt in the Bombay-Belgaum area.
Nov 17 06 49 30.0 0.20 N 98.03 E 33 N 6.3 7.2 1.1 440 NORTHERN SUMATERA. Ms 7.4 (BRK), 7.2 (PAS).
Mo=3.3*10**19 Nm (GS). Mo=5.8*10**19 Nm (HRV).
One person injured and two buildings damaged on
Nias. Felt strongly in many parts of northern
Sumatera from Padang to Medan. The focal
mechanism is poorly controlled and corresponds
to reverse faulting.
Nov 17 22 43 39.7 18.40 S 175.70 W 33 N 5.4 6.1 1.4 104 TONGA ISLANDS. Ms 6.6 (BRK), 6.2 (PAS).
Mo=2.6*10**18 Nm (HRV).
Nov 23 04 45 53.2 7.99 S 102.26 E 33 N 6.0 6.7 1.2 213 SOUTHWEST OF SUMATERA. Mo=4.4*10**18 Nm (HRV).
Felt at Jakarta, Java. The focal mechanism
is poorly controlled and corresponds to
strike-slip faulting.
Nov 23 04 46 06.3 14.31 S 171.28 E 33 N 6.0 6.7 1.2 130 VANATU ISLANDS REGION. Ms 7.1 (BRK), 6.8 (PAS).
Mo=1.9*10**19 Nm (HRV).
Nov 26 16 21 47.0& 37.47 N 118.70 W 10 G 5.1 4.7 128 CALIFORNIA-NEVADA BORDER REGION. .
ML 5.6 (BRK), 5.5 (PAS). Mo=2.4*10**23 (BRK).
Mo=6.0*10**16 Nm (HRV). One man injured in an
avalanche triggered by the earthquake. Felt (V)
at Bishop. Felt throughout much of central
California and in parts of western Nevada.
Dec 28 10 37 53.7 56.19 N 163.46 E 33 N 6.2 7.0 1.1 401 NEAR EAST COAST OF KAMCHATKA. Ms 6.7 (BRK),
6.4 (PAS). Mo=1.4*10**19 Nm (GS).
Mo=1.4*10**19 Nm (HRV). The focal mechanism is
moderately well controlled and corresponds to
strike-slip faulting.
Dec 30 21 36 56.4 36.66 S 177.51 E 39 6.2 6.8 1.4 123 OFF EAST COAST OF NORTH ISLAND, NEW ZEALAND.
Ms 6.8 (BRK), 6.6 (PAS). Mo=1.8*10**19 Nm (HRV).
Felt at Auckland and in western Bay of Plenty.
Dec 30 23 33 37.7 24.64 N 92.89 E 23 5.6 1.1 193 INDIA-BANGLADESH BORDER REGION.
Mo=1.3*10**18 Nm (HRV). Twenty people killed,
about 100 injured, 10,000 homeless and extensive
damage in southern Assam, India.
OTHER NOTABLE NORTH AMERICAN EARTHQUAKES
1984
Oct 18 15 30 23.0 42.38 N 105.72 W 33 N 5.4 5.1 0.8 146 WYOMING. ML 5.5 (GS). Mo=1.1*10**17 Nm (HRV).
Slight damage (VI) at Douglas, Medicine Bow,
Casper, Shirley Basin, McFadden, Rock River and Guernsey. Some damage was reported at a condominium complex in
Golden, Colorado. Felt throughout much of Wyoming and northern Colorado. Also felt in western Nebraska, parts
of South Dakota and Montana, and by some people in high-rise buildings in Omaha, Nebraska and Salt Lake City, Utah.
Feeds & Data
