Every countryTonga

Tonga earthquakes in 1981

155 earthquakes of magnitude 4.5 or more were located in Tonga in 1981. The largest: M7.7 133 km NE of Hihifo, Tonga, Aug 31, 1981.

From the USGS catalog. Times are local to each quake.

19801982

Map

Where every quake of 1981 was located in Tonga. Select one for its page.

Open the live map with earthquakes

Every quake of 1981

Magnitude 4.5 and up, newest first.

  1. 4.8132 km SW of ‘Ohonua, Tonga · 64 km deep
  2. 5.5155 km SW of Haveluloto, Tonga · 159 km deep
  3. 5.655 km N of Hihifo, Tonga · 73 km deep
  4. 4.810 km SSE of Pangai, Tonga · 33 km deep
  5. 4.994 km ENE of Kolonga, Tonga · 33 km deep
  6. 5.3290 km SSW of ‘Ohonua, Tonga · 33 km deep
  7. 5.2140 km NNE of Neiafu, Tonga · 33 km deep
  8. 4.9127 km SE of ‘Ohonua, Tonga · 33 km deep
  9. 5.268 km E of ‘Ohonua, Tonga · 33 km deep
  10. 5.298 km NE of ‘Ohonua, Tonga · 33 km deep
  11. 4.7123 km SE of Hihifo, Tonga · 33 km deep
  12. 4.5131 km NE of Neiafu, Tonga · 33 km deep
  13. 5.894 km NNE of Hihifo, Tonga · 33 km deep
  14. 4.5137 km NE of Hihifo, Tonga · 33 km deep
  15. 5.3267 km W of Haveluloto, Tonga · 504 km deep
  16. 5.6293 km SSW of ‘Ohonua, Tonga · 33 km deep
  17. 4.872 km NE of Hihifo, Tonga · 33 km deep
  18. 6.326 km SSE of Pangai, Tonga · 33 km deep
  19. 4.795 km WNW of Neiafu, Tonga · 82 km deep
  20. 4.9113 km SSE of Hihifo, Tonga · 40 km deep
  21. 5.045 km S of Hihifo, Tonga · 106 km deep
  22. 5.2239 km WNW of Neiafu, Tonga · 168 km deep
  23. 4.9126 km ENE of Hihifo, Tonga · 48 km deep
  24. 4.850 km E of Pangai, Tonga · 33 km deep
  25. 5.097 km N of Neiafu, Tonga · 76 km deep
  26. 4.738 km SSW of Vaini, Tonga · 58 km deep
  27. 5.4102 km NE of Hihifo, Tonga · 33 km deep
  28. 5.0216 km WNW of Neiafu, Tonga · 157 km deep
  29. 4.772 km N of Hihifo, Tonga · 33 km deep
  30. 5.291 km SSE of Neiafu, Tonga · 33 km deep
  31. 4.8107 km E of Hihifo, Tonga · 33 km deep
  32. 5.148 km E of ‘Ohonua, Tonga · 33 km deep
  33. 5.0south of Tonga · 33 km deep
  34. 5.1139 km W of Pangai, Tonga · 226 km deep
  35. 4.737 km NE of Hihifo, Tonga · 123 km deep
  36. 4.8110 km NE of Hihifo, Tonga · 33 km deep
  37. 5.2203 km WNW of Pangai, Tonga · 302 km deep
  38. 4.9104 km N of Hihifo, Tonga · 33 km deep
  39. 5.2239 km SSW of ‘Ohonua, Tonga · 33 km deep
  40. 4.7154 km N of Hihifo, Tonga · 33 km deep
  41. 4.7116 km NE of Hihifo, Tonga · 33 km deep
  42. 5.3116 km N of Hihifo, Tonga · 33 km deep
  43. 5.5102 km ENE of Hihifo, Tonga · 33 km deep
  44. 4.8127 km NE of Hihifo, Tonga · 33 km deep
  45. 4.8136 km ENE of Hihifo, Tonga · 33 km deep
  46. 4.9115 km ENE of Hihifo, Tonga · 33 km deep
  47. 5.6104 km NE of Hihifo, Tonga · 33 km deep
  48. 5.788 km NE of Hihifo, Tonga · 33 km deep
  49. 4.6101 km NNE of Hihifo, Tonga · 33 km deep
  50. 5.1111 km NE of Hihifo, Tonga · 33 km deep
  51. 4.8112 km NNE of Hihifo, Tonga · 33 km deep
  52. 4.5126 km ENE of Hihifo, Tonga · 33 km deep
  53. 5.2113 km NNE of Hihifo, Tonga · 33 km deep
  54. 5.6105 km NNE of Hihifo, Tonga · 33 km deep
  55. 7.7133 km NE of Hihifo, Tonga · 25 km deep
  56. 5.8105 km NNE of Hihifo, Tonga · 33 km deep
  57. 4.9276 km WNW of Haveluloto, Tonga · 557 km deep
  58. 4.7115 km W of Hihifo, Tonga · 287 km deep
  59. 5.7199 km SSW of ‘Ohonua, Tonga · 33 km deep
  60. 5.9196 km SSW of ‘Ohonua, Tonga · 33 km deep
  61. 4.857 km WSW of Neiafu, Tonga · 33 km deep
  62. 4.695 km N of Hihifo, Tonga · 33 km deep
  63. 4.568 km N of Kolonga, Tonga · 33 km deep
  64. 5.463 km WSW of Hihifo, Tonga · 191 km deep
  65. 4.9Tonga · 33 km deep
  66. 5.745 km E of Neiafu, Tonga · 33 km deep
  67. 4.793 km ENE of Hihifo, Tonga · 35 km deep
  68. 5.4153 km NE of Neiafu, Tonga · 42 km deep
  69. 4.686 km NNW of Nuku‘alofa, Tonga · 162 km deep
  70. 4.692 km S of Hihifo, Tonga · 93 km deep
  71. 5.0297 km NW of Nuku‘alofa, Tonga · 380 km deep
  72. 5.0147 km NNW of Neiafu, Tonga · 83 km deep
  73. 4.9155 km W of Neiafu, Tonga · 241 km deep
  74. 4.8162 km SW of Hihifo, Tonga · 215 km deep
  75. 5.681 km NNE of Hihifo, Tonga · 33 km deep
  76. 4.8212 km ESE of Hihifo, Tonga · 33 km deep
  77. 5.086 km SE of Hihifo, Tonga · 33 km deep
  78. 4.9116 km ENE of Hihifo, Tonga · 33 km deep
  79. 5.187 km NNE of Hihifo, Tonga · 50 km deep
  80. 5.3120 km WNW of Haveluloto, Tonga · 233 km deep
  81. 5.491 km N of Nuku‘alofa, Tonga · 178 km deep
  82. 5.0288 km WNW of Haveluloto, Tonga · 402 km deep
  83. 4.8236 km WNW of Haveluloto, Tonga · 342 km deep
  84. 5.1131 km ESE of Hihifo, Tonga · 47 km deep
  85. 5.2288 km WNW of Haveluloto, Tonga · 531 km deep
  86. 4.9293 km SW of ‘Ohonua, Tonga · 33 km deep
  87. 4.6175 km SSW of Vaini, Tonga · 127 km deep
  88. 4.8278 km WNW of Haveluloto, Tonga · 510 km deep
  89. 5.4129 km SW of Vaini, Tonga · 127 km deep
  90. 4.6177 km WNW of Haveluloto, Tonga · 285 km deep
  91. 4.5109 km SE of Hihifo, Tonga · 33 km deep
  92. 6.031 km SE of Hihifo, Tonga · 33 km deep
  93. 4.7274 km W of Haveluloto, Tonga · 478 km deep
  94. 4.671 km NE of Kolonga, Tonga · 23 km deep
  95. 5.4126 km S of Hihifo, Tonga · 137 km deep
  96. 4.523 km S of Hihifo, Tonga · 86 km deep
  97. 4.5177 km WNW of Hihifo, Tonga · 33 km deep
  98. 4.5126 km SSE of Hihifo, Tonga · 33 km deep
  99. 5.186 km NW of Neiafu, Tonga · 75 km deep
  100. 5.1104 km ESE of Hihifo, Tonga · 33 km deep
  101. 4.8164 km W of Haveluloto, Tonga · 283 km deep
  102. 5.1south of Tonga · 33 km deep
  103. 4.6Tonga · 244 km deep
  104. 4.675 km WSW of Hihifo, Tonga · 252 km deep
  105. 4.6142 km SSE of ‘Ohonua, Tonga · 33 km deep
  106. 4.8105 km NNW of Nuku‘alofa, Tonga · 226 km deep
  107. 5.2236 km S of ‘Ohonua, Tonga · 40 km deep
  108. 4.7south of Tonga · 33 km deep
  109. 5.5234 km S of ‘Ohonua, Tonga · 35 km deep
  110. 4.7229 km SW of Vaini, Tonga · 220 km deep
  111. 4.9142 km NE of Hihifo, Tonga · 33 km deep
  112. 4.8118 km NNE of Hihifo, Tonga · 33 km deep
  113. 4.6202 km SE of Hihifo, Tonga · 33 km deep
  114. 5.189 km S of Pangai, Tonga · 33 km deep
  115. 5.776 km ESE of ‘Ohonua, Tonga · 43 km deep
  116. 5.36 km WNW of Pangai, Tonga · 33 km deep
  117. 4.6Tonga · 72 km deep
  118. 4.98 km E of Hihifo, Tonga · 146 km deep
  119. 4.7south of Tonga · 33 km deep
  120. 5.294 km ESE of Hihifo, Tonga · 33 km deep
  121. 4.5224 km S of ‘Ohonua, Tonga · 33 km deep
  122. 5.2133 km NW of Hihifo, Tonga · 33 km deep
  123. 4.6210 km SSW of ‘Ohonua, Tonga · 33 km deep
  124. 5.1269 km S of ‘Ohonua, Tonga · 33 km deep
  125. 5.4225 km SSW of ‘Ohonua, Tonga · 33 km deep
  126. 5.5229 km S of ‘Ohonua, Tonga · 33 km deep
  127. 4.924 km WNW of Hihifo, Tonga · 99 km deep
  128. 5.194 km SE of Hihifo, Tonga · 33 km deep
  129. 5.286 km E of ‘Ohonua, Tonga · 33 km deep
  130. 4.6172 km WNW of Pangai, Tonga · 245 km deep
  131. 4.8108 km N of Neiafu, Tonga · 113 km deep
  132. 5.476 km NE of Hihifo, Tonga · 33 km deep
  133. 4.8241 km SSW of Vaini, Tonga · 135 km deep
  134. 5.1129 km W of Pangai, Tonga · 241 km deep
  135. 5.2200 km S of ‘Ohonua, Tonga · 33 km deep
  136. 5.1122 km NW of Neiafu, Tonga · 153 km deep
  137. 4.8129 km ESE of Hihifo, Tonga · 61 km deep
  138. 5.2114 km W of Hihifo, Tonga · 33 km deep
  139. 4.8124 km NE of Hihifo, Tonga · 33 km deep
  140. 4.847 km E of ‘Ohonua, Tonga · 33 km deep
  141. 5.284 km NE of Hihifo, Tonga · 33 km deep
  142. 5.2293 km WNW of Haveluloto, Tonga · 544 km deep
  143. 4.7130 km SE of Hihifo, Tonga · 33 km deep
  144. 5.0154 km SSE of ‘Ohonua, Tonga · 33 km deep
  145. 4.8111 km ENE of Hihifo, Tonga · 33 km deep
  146. 5.5229 km NE of Neiafu, Tonga · 15 km deep
  147. 4.785 km NW of Hihifo, Tonga · 33 km deep
  148. 4.564 km WNW of Neiafu, Tonga · 89 km deep
  149. 5.6136 km E of Hihifo, Tonga · 35 km deep
  150. 5.1141 km W of Hihifo, Tonga · 33 km deep
  151. 4.553 km SSE of Pangai, Tonga · 33 km deep
  152. 5.276 km ENE of ‘Ohonua, Tonga · 41 km deep
  153. 5.6111 km NNW of Hihifo, Tonga · 33 km deep
  154. 5.3279 km W of Haveluloto, Tonga · 467 km deep
  155. 5.286 km NE of Hihifo, Tonga · 33 km deep

The largest

The 25 largest of 1981 in Tonga.

  1. 7.7133 km NE of Hihifo, Tonga · 25 km deep
  2. 6.326 km SSE of Pangai, Tonga · 33 km deep
  3. 6.031 km SE of Hihifo, Tonga · 33 km deep
  4. 5.9196 km SSW of ‘Ohonua, Tonga · 33 km deep
  5. 5.894 km NNE of Hihifo, Tonga · 33 km deep
  6. 5.8105 km NNE of Hihifo, Tonga · 33 km deep
  7. 5.788 km NE of Hihifo, Tonga · 33 km deep
  8. 5.7199 km SSW of ‘Ohonua, Tonga · 33 km deep
  9. 5.745 km E of Neiafu, Tonga · 33 km deep
  10. 5.776 km ESE of ‘Ohonua, Tonga · 43 km deep
  11. 5.655 km N of Hihifo, Tonga · 73 km deep
  12. 5.6293 km SSW of ‘Ohonua, Tonga · 33 km deep
  13. 5.6104 km NE of Hihifo, Tonga · 33 km deep
  14. 5.6105 km NNE of Hihifo, Tonga · 33 km deep
  15. 5.681 km NNE of Hihifo, Tonga · 33 km deep
  16. 5.6136 km E of Hihifo, Tonga · 35 km deep
  17. 5.6111 km NNW of Hihifo, Tonga · 33 km deep
  18. 5.5155 km SW of Haveluloto, Tonga · 159 km deep
  19. 5.5102 km ENE of Hihifo, Tonga · 33 km deep
  20. 5.5234 km S of ‘Ohonua, Tonga · 35 km deep
  21. 5.5229 km S of ‘Ohonua, Tonga · 33 km deep
  22. 5.5229 km NE of Neiafu, Tonga · 15 km deep
  23. 5.4102 km NE of Hihifo, Tonga · 33 km deep
  24. 5.463 km WSW of Hihifo, Tonga · 191 km deep
  25. 5.4153 km NE of Neiafu, Tonga · 42 km deep

Month by month

Counted by UTC date, which is how the catalog files them.

MonthQuakesLargestWhere
January 1981135.6136 km E of Hihifo, Tonga
February 1981145.476 km NE of Hihifo, Tonga
March 1981145.776 km ESE of ‘Ohonua, Tonga
April 1981135.5234 km S of ‘Ohonua, Tonga
May 198185.4126 km S of Hihifo, Tonga
June 1981156.031 km SE of Hihifo, Tonga
July 1981125.681 km NNE of Hihifo, Tonga
August 1981105.9196 km SSW of ‘Ohonua, Tonga
September 1981247.7133 km NE of Hihifo, Tonga
October 1981135.4102 km NE of Hihifo, Tonga
November 198196.326 km SSE of Pangai, Tonga
December 1981105.655 km N of Hihifo, Tonga

What this means

The catalog is only as complete as the instruments of the time. Worldwide coverage of magnitude 5 and up dates from the 1960s, and of 4.5 from the 1990s; earlier years hold the large quakes and the ones near a station, so a low count in an early year means fewer instruments, not a quiet earth.

By year

Every year the USGS catalog covers.

Nearby

Tonga nowWorldwide in 1981

Sources

Earthquakes, magnitudes, depths, shaking estimates and felt reports from the U.S. Geological Survey Earthquake Hazards Program, read from its live feeds and its catalog back to 1900. Tsunami messages from NOAA’s tsunami warning centers.