Seismic News

1. World Earthquake Report for Wednesday, 21 April 2021

   

   Worldwide earthquakes above magnitude 3 during the past 24 hours on 21 Apr 2021

   Summary: 3 quakes 5.0+, 29 quakes 4.0+, 151 quakes 3.0+, 265 quakes 2.0+ (448 total)
   This report is being updated every hour.
   Magnitude 5+: 3 earthquakes
   Magnitude 4+: 29 earthquakes
   Magnitude 3+: 151 earthquakes
   Magnitude 2+: 265 earthquakes
   No quakes of magnitude 6 or higher

   10 largest earthquakes in the world (past 24 hours):

   #1: 5.6 quake South Pacific Ocean 21 Apr 7:21 am (GMT +12)
   #2: 5.0 quake North Pacific Ocean, Northern Mariana Islands, 21 Apr 6:01 am (GMT +10)
   #3: 5.0 quake 45 km south of Mendi, Southern Highlands Province, Papua New Guinea, 21 Apr 2:47 pm (GMT +10)
   #4: 4.9 quake Solomon Sea, Papua New Guinea, 21 Apr 10:17 pm (GMT +10)
   #5: 4.7 quake Westland District, West Coast, 86 km northwest of Wanaka, New Zealand, 21 Apr 5:50 pm (GMT +12)
   #6: 4.6 quake 208 km southeast of Aral, Xinjiang, China, 21 Apr 10:16 am (GMT +8)
   #7: 4.5 quake 89 km northeast of Xigaze, Tibet, China, 21 Apr 9:28 pm (GMT +8)
   #8: 4.5 quake 90 km northeast of Taldykorgan, Almaty Oblysy, Kazakhstan, 21 Apr 11:11 pm (GMT +6)
   #9: 4.4 quake 32 km northeast of Benkulu, Bengkulu, Indonesia, 21 Apr 9:32 pm (GMT +7)
   #10: 4.3 quake North Pacific Ocean, 48 km south of Usulutan, El Salvador, 2021-04-20 16:52:17

   Earthquakes reported felt:

   #1: 3.3 quake 3.2 km north of Zagreb, HR.21.3186885, City of Zagreb, Croatia, 20 April 2021 21:15 GMT - 691 reports
   #2: 4.1 quake 5.3 Km NE of Grindavík, Iceland, 20 Apr 11:05 pm (GMT +0) - 33 reports
   #3: 3.2 quake Sulu Sea, 54 km west of Isabela, Philippines, 21 April 2021 - 02:18 PM (PST) - 14 reports
   #4: 3.1 quake San Benito County, 12 mi northeast of Salinas, Monterey County, California, USA, 20 Apr 2021 8:55 pm (GMT -7) - 13 reports
   #5: 2.2 quake Alicante, 8.1 km south of Gandia, Valencia, Spain, 21 April 2021 00:36 GMT - 6 reports
   #6: 3.1 quake 7.2 km east of Christchurch, Canterbury, New Zealand, 21 April 2021 03:21 GMT - 6 reports
   #7: 2.4 quake Pokupsko, Zagreb County, 32 km south of Zagreb, Croatia, 20 April 2021 23:36 GMT - 5 reports
   #8: 4.0 quake South Pacific Ocean, 31 km south of Lima, Peru, 21 Apr 11:11 am (GMT -5) - 5 reports
   #9: 3.2 quake 5.4 km southwest of Kameoka, Kyoto, Japan, Apr 21, 2021 04:43:30.24 - 4 reports
   #10: 4.7 quake Westland District, West Coast, 86 km northwest of Wanaka, New Zealand, 21 Apr 5:50 pm (GMT +12) - 4 reports
   #11: 3.2 quake Klis, 15 km north of Split, Split-Dalmatia, Croatia, 20 April 2021 22:46 GMT - 4 reports
   #12: 3.2 quake 4.8 Km NNE of Grindavík, Iceland, 20 April 2021 23:29 GMT - 3 reports
   #13: 2.7 quake 55 mi southwest of Kaktovik, North Slope, Alaska, USA, 21 April 2021 07:20 GMT - 2 reports
   #14: 3.5 quake 43 km northeast of Ensenada, Baja California, Mexico, 2021-04-21 04:30:54 (Hora de México) - 2 reports

   Earthquake stats:

   

2. Light mag. 4.1 earthquake - SE OFF ETOROFU, Russia, on Apr 22, 2021 04:04:28.88

3. Volcano earthquake report for Wednesday, 21 Apr 2021

   

   World map showing volcanoes with shallow (less than 20 km) earthquakes within 20 km radius during the past 24 hours on 21 Apr 2021 Number in brackets indicate nr of quakes.

   Quakes detected near: Akuseki-jima (1 quake mag 4.0), Bardarbunga (5 quakes between mag 0.7-1.6), Clear Lake (25 quakes between mag 0.4-2.5), Coso (8 quakes between mag 0.8-1.9), Fagradalsfjall (68 quakes between mag 0.1-4.1), Hrómundartindur (2 quakes between mag 0.1-1.2)
   Izu-Tobu (5 quakes between mag 2.7-3.7), Katmai (1 quake mag 1.1), Kilauea (1 quake mag 2.1), Krísuvík (6 quakes between mag 0.1-1.8), La Palma (2 quakes between mag 1.6-1.7), Las Pilas (1 quake mag 2.0), Maroa (1 quake mag 2.3), Maunaloa (2 quakes between mag 1.8-2.4), Methana (1 quake mag 1.5), Nisyros (29 quakes between mag 1.5-3.9), Oshima (1 quake mag 2.5), Pelée (3 quakes between mag 0.5-1.0), Reykjanes (29 quakes between mag 0.1-3.2), Sabancaya (1 quake mag 3.7), Tatun Group (1 quake mag 3.0), Tjörnes Fracture Zone (4 quakes between mag 0.9-1.3), Toba (1 quake mag 2.1), Tungnafellsjökull (3 quakes between mag 0.7-1.4) (updated 18h50)
   
   Note: Earthquakes within 20 km from and at depths less than 20 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.
   
   Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:
   

   
   

   Akuseki-jima volcano (Ryukyu Islands): magnitude 4.0 earthquake

   A magnitude 4.0 earthquake occurred at the volcano 20 hours ago. The quake, which might be volcanic in origin, was located at a depth of 12.4 km depth at 16 km distance SSW from the volcano.
   Earthquake details:
   4.0 quake East China Sea, 108 km north of Naze, Amami Shi, Kagoshima, Japan, Apr 21, 2021 07:45:23.74 (16 km SSW)All earthquakes at Akuseki-jima
   
   

   Clear Lake volcano (California): 25 earthquakes up to magnitude 2.5

   Possible earthquake swarm: 25 earthquakes occurred near (under) the volcano during 16 hours, the last being recorded quake 5 hours ago. Hypocenter depths ranged between 4.3 and 0.9 km.
   Earthquake details: (only 5 largest)
   2.5 quake 7km W of Cobb, CA, USA, 20 April 2021 21:40 GMT (16 km S)1.8 quake 7km NW of The Geysers, CA, USA, 20 April 2021 23:29 GMT (18 km SSW)1.2 quake 8km NW of The Geysers, CA, USA, 21 April 2021 05:03 GMT (16 km SSW)1.2 quake 7km NW of The Geysers, CA, USA, 21 April 2021 04:40 GMT (16 km S)1.1 quake 7km W of Cobb, CA, USA, 20 April 2021 21:41 GMT (16 km SSW)All earthquakes at Clear Lake
   
   

   Fagradalsfjall volcano (Reykjanes Peninsula, Iceland): 68 earthquakes up to magnitude 4.1

   Possible earthquake swarm: 68 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 1 hour 3 minutes ago. Hypocenter depths ranged between 6.5 and 0.0 km.
   Earthquake details: (only 5 largest)
   4.1 quake 5.3 Km NE of Grindavík, Iceland, 20 Apr 11:05 pm (GMT +0) (5 km WSW)2.2 quake 5.5 Km NNE of Grindavík, Iceland, 20 April 2021 23:40 GMT (6 km WSW)2.1 quake 5.7 Km NNE of Grindavík, Iceland, 21 April 2021 13:30 GMT (6 km WSW)2.0 quake 5.2 Km NE of Grindavík, Iceland, 20 April 2021 23:11 GMT (6 km WSW)1.9 quake 5.3 Km NNE of Grindavík, Iceland, 21 April 2021 01:10 GMT (6 km WSW)All earthquakes at Fagradalsfjall
   
   

   Izu-Tobu volcano (Honshu): 5 earthquakes up to magnitude 3.7

   5 earthquakes occurred near (under) the volcano during 3 hours, the last being recorded quake 4 hours ago. Hypocenter depths ranged between 12.2 and 5.5 km.
   Earthquake details:
   3.7 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 21:29:50.07 (16 km SE)3.1 quake North Pacific Ocean, 22 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 20:55:21.38 (16 km SE)2.9 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 22:07:38.87 (16 km SE)2.9 quake North Pacific Ocean, 22 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 20:46:50.41 (15 km SE)2.7 quake North Pacific Ocean, 23 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 23:20:08.20 (17 km SE)All earthquakes at Izu-Tobu
   
   

   Kilauea volcano (Hawai'i (Big Island)): magnitude 2.1 earthquake

   A magnitude 2.1 earthquake occurred at the volcano 7 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.5 km depth at 17 km distance WNW from the volcano.
   Earthquake details:
   2.1 quake 21 Km WNW of Volcano, Hawaii, USA, 21 April 2021 12:15 GMT (17 km WNW)All earthquakes at Kilauea
   
   

   Maroa volcano (New Zealand): magnitude 2.3 earthquake

   A magnitude 2.3 earthquake occurred at the volcano 15 hours ago. The quake, which might be volcanic in origin, was located at a depth of 1.8 km depth at 16 km distance SSE from the volcano.
   Earthquake details:
   2.3 quake Rotorua District, Bay of Plenty, 17 km northeast of Taupo, Waikato, New Zealand, 21 April 2021 04:04 GMT (16 km SSE)All earthquakes at Maroa
   
   

   Maunaloa volcano (Hawai'i (Big Island)): 2 earthquakes up to magnitude 2.4

   2 earthquakes occurred near (under) the volcano during 10 hours, the last being recorded quake 2 hours ago. Hypocenter depths ranged between 2.0 and 0.2 km.
   Earthquake details:
   2.4 quake 41 mi southwest of Hilo, Hawaii County, USA, 21 April 2021 05:51 GMT (5 km SSW)1.8 quake 34 Km ENE of Honaunau-Napoopoo, Hawaii, USA, 21 April 2021 16:21 GMT (13 km NNE)All earthquakes at Maunaloa
   
   

   Nisyros volcano (Greece): 29 earthquakes up to magnitude 3.9

   Possible earthquake swarm: 29 earthquakes occurred near (under) the volcano during 23 hours, the last being recorded quake 25 minutes ago. Hypocenter depths ranged between 19.5 and 4.1 km.
   Earthquake details: (only 5 largest)
   3.9 quake Aegean Sea, 49 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 Apr 7:07 pm (GMT +3) (13 km S)3.6 quake Aegean Sea, 51 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 19:31 GMT (15 km S)3.5 quake Aegean Sea, 57 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 21:12 GMT (17 km S)3.1 quake Aegean Sea, 55 km south of Kos Town, Dodecanese, South Aegean, Greece, 20 April 2021 21:16 GMT (19 km S)3.0 quake Aegean Sea, 59 km south of Kos Town, Dodecanese, South Aegean, Greece, 21 April 2021 01:12 GMT (16 km SSW)All earthquakes at Nisyros
   
   

   Oshima volcano (Izu Islands): magnitude 2.5 earthquake

   A magnitude 2.5 earthquake occurred at the volcano 4 hours ago. The quake, which might be volcanic in origin, was located at a depth of 4.1 km depth at 17 km distance WNW from the volcano.
   Earthquake details:
   2.5 quake North Pacific Ocean, 24 km southeast of Itō, Shizuoka, Japan, Apr 21, 2021 23:28:04.68 (17 km WNW)All earthquakes at Oshima
   
   

   Reykjanes volcano (Reykjanes Peninsula, Iceland): 29 earthquakes up to magnitude 3.2

   Possible earthquake swarm: 29 earthquakes occurred near (under) the volcano during 21 hours, the last being recorded quake 13 minutes ago. Hypocenter depths ranged between 13.3 and 2.3 km.
   Earthquake details: (only 5 largest)
   3.2 quake 4.8 Km NNE of Grindavík, Iceland, 20 April 2021 23:29 GMT (6 km ESE)3.1 quake 5.1 Km NNE of Grindavík, Iceland, 20 April 2021 21:20 GMT (6 km ESE)2.8 quake 3.9 Km N of Grindavík, Iceland, 21 April 2021 05:38 GMT (4 km ESE)2.8 quake 4.3 Km NNE of Grindavík, Iceland, 21 April 2021 14:27 GMT (6 km ESE)2.6 quake 4.3 Km NNE of Grindavík, Iceland, 21 April 2021 13:13 GMT (6 km ESE)All earthquakes at Reykjanes
   
   

   Sabancaya volcano (Peru): magnitude 3.7 earthquake

   A magnitude 3.7 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 9.0 km depth at 15 km distance NNE from the volcano.
   Earthquake details:
   3.7 quake Provincia de Caylloma, 88 km north of Arequipa, Peru, 21 April 2021 13:19 GMT (15 km NNE)All earthquakes at Sabancaya
   
   

   Tatun Group volcano (Taiwan): magnitude 3.0 earthquake

   A magnitude 3.0 earthquake occurred at the volcano 8 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 15 km distance S from the volcano.
   Earthquake details:
   Unconfirmed quake reported: Near Taipei, Taiwan, Taiwan, 21 April 2021 10:57 GMT (15 km S)All earthquakes at Tatun Group
   
   

   Toba volcano (Sumatra): magnitude 2.1 earthquake

   A magnitude 2.1 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 10 km distance NNE from the volcano.
   Earthquake details:
   2.1 quake 64 km south of Pematangsiantar, North Sumatra, Indonesia, 21 April 2021 08:06 GMT (10 km NNE)All earthquakes at Toba

4. World Earthquake Report for April 2021

   

   Worldwide earthquakes above magnitude 5 during April 2021

   Summary: 12 quakes 6.0+, 108 quakes 5.0+, 750 quakes 4.0+, 2623 quakes 3.0+, 5333 quakes 2.0+ (8826 total)
   This report is being updated every day.
   Magnitude 9+: none
   Magnitude 8+: none
   Magnitude 7+: none
   Magnitude 6+: 12 earthquakes
   Magnitude 5+: 108 earthquakes
   Magnitude 4+: 750 earthquakes
   Magnitude 3+: 2623 earthquakes
   Magnitude 2+: 5333 earthquakes
   No quakes of magnitude 7 or higher

   List of 10 largest earthquakes in the world during April 2021:

   #1: 6.6 quake South Atlantic Ocean 3 Apr 2021 12:16 am (GMT -1)
   #2: 6.2 quake South Pacific Ocean, 197 km northeast of Gisborne, New Zealand, 5 Apr 2021 7:37 pm (GMT +12)
   #3: 6.1 quake South Pacific Ocean, New Zealand, 1 Apr 2021 10:56 pm (GMT +13)
   #4: 6.1 quake South Pacific Ocean, New Zealand, 6 Apr 2021 9:53 pm (GMT -12)
   #5: 6.1 quake Indian Ocean, 89 km south of Blitar, East Java, Indonesia, 10 Apr 2:00 pm (GMT +7)
   #6: 6.1 quake Mindanao Sea, Indonesia, 10 Apr 5:30 pm (GMT +8)
   #7: 6.1 quake Bismarck Sea, 196 km north of Madang, Papua New Guinea, 10 Apr 9:38 pm (GMT +10)
   #8: 6.1 quake North Pacific Ocean, 53 km east of Ishinomaki, Miyagi, Japan, Apr 18, 2021 09:29:11.44
   #9: 6.1 quake Indian Ocean, 165 km southwest of Nias Island, North Sumatra, Indonesia, 20 Apr 5:58 am (GMT +6)
   #10: 6.0 quake South Pacific Ocean, Fiji, 1 Apr 2021 3:11 am (GMT -12)
   

   Earthquake stats:

   

   Largest 20 quakes past 24 hours

   Largest 20 quakes during April 2021

   Complete earthquake list April 2021

5. Moderate mag. 4.5 earthquake - 90 km northeast of Taldykorgan, Almaty Oblysy, Kazakhstan, on 21 Apr 11:11 pm (GMT +6)