Earthquake with magnitude of ML 1.8 on date 14-08-2021 and time 10:18:33 (Italy) in region 6 km NE Amatrice (RI)

A magnitude ML 1.8 earthquake occured in region: 6 km NE Amatrice (RI), on

  • 14-08-2021 08:18:33 (UTC)
  • 14-08-2021 10:18:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6750, 13.3240 at 11 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 6 2657 2657
Accumoli RI 7 667 3324
Arquata del Tronto AP 11 1178 4502
Acquasanta Terme AP 13 2916 7418
Campotosto AQ 14 542 7960
Cittareale RI 15 482 8442
Valle Castellana TE 16 977 9419
Cortino TE 16 656 10075
Rocca Santa Maria TE 17 537 10612
Capitignano AQ 17 665 11277
Montereale AQ 18 2581 13858
Montegallo AP 19 523 14381
Crognaleto TE 19 1297 15678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km W of Teramo (54892 inhabitants)
36 Km N of L'Aquila (69753 inhabitants)
57 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
77 Km W of Pescara (121014 inhabitants)
78 Km W of Chieti (51815 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Tivoli (56533 inhabitants)
90 Km SE of Perugia (166134 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
ML 1.8 2021-08-14
08:18:33
42.6748 13.3237 11 2021-12-29
11:12:29
Bollettino Sismico Italiano INGV 95373161
Reviewed
Rev100
ML 1.8 2021-08-14
08:18:33
42.6852 13.3035 10 2021-08-14
08:26:20
Sala Sismica INGV-Roma 94123441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-14 08:18:33 ± 0.06
Latitude 42.6748 ± 0.0036
Longitude 13.3237 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95373161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 395
Semi-minor axis of confidence ellipse (meter) 218
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 16
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.70687
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 94123441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-14 08:26:20

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 95373161
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-13 07:18:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HNZ. 2021-08-14T08:18:53.41 0.6 undecidable manual S 283 63.0924 90 0.5 42
IV.FIAM.HNN. 2021-08-14T08:18:49.02 0.6 undecidable manual S 201 48.2184 91 0.08 47
IV.CSP1.EHZ. 2021-08-14T08:18:48.85 0.3 undecidable manual S 348 47.2194 91 0.16 70
IV.CING.HNZ. 2021-08-14T08:18:47.09 0.6 undecidable manual P 352 78.4659 90 -0.04 45
IV.FDMO.HHN. 2021-08-14T08:18:47.93 0.6 undecidable manual S 334 44.5221 91 -0.03 48
IV.MF5.EHZ. 2021-08-14T08:18:46.56 0.6 undecidable manual S 18 36.4413 91 0.75 40
IV.GAVE.EHN. 2021-08-14T08:18:45.20 0.3 undecidable manual S 273 35.0427 91 -0.24 71
IV.MOMA.HNZ. 2021-08-14T08:18:44.73 0.3 undecidable manual P 283 63.0924 90 -0.03 70
IV.MC2.EHZ. 2021-08-14T08:18:43.44 0.6 undecidable manual S 337 28.4493 91 -0.23 48
IV.VCEL.EHZ. 2021-08-14T08:18:43.60 0.6 undecidable manual P 126 52.4031 91 0.47 43
IV.CESI.HHE. 2021-08-14T08:18:43.50 0.6 undecidable manual P 317 50.0166 91 0.75 39
IV.MMO1.HNZ. 2021-08-14T08:18:42.42 0.6 undecidable manual S 1 24.9528 92 -0.31 47
IV.OFFI.HHE. 2021-08-14T08:18:42.18 0.6 undecidable manual P 45 41.2254 91 0.78 40
IV.CSP1.EHZ. 2021-08-14T08:18:42.12 0.3 undecidable manual P 348 47.2194 91 -0.21 69
IV.FIAM.HNN. 2021-08-14T08:18:42.21 0.6 undecidable manual P 201 48.2184 91 -0.26 46
IV.LNSS.HHZ. 2021-08-14T08:18:42.40 0.6 undecidable manual S 251 24.4533 92 -0.21 48
IV.TERO.HHZ. 2021-08-14T08:18:42.07 0.3 undecidable manual S 104 23.5542 92 -0.31 71
IV.FDMO.HHN. 2021-08-14T08:18:41.74 0.6 undecidable manual P 334 44.5221 91 -0.16 47
IV.RM33.EHZ. 2021-08-14T08:18:41.47 0.6 undecidable manual S 206 20.4684 93 -0.07 50
IV.MF5.EHZ. 2021-08-14T08:18:40.87 0.6 undecidable manual P 18 36.4413 91 0.21 47
IV.CAMP.HHZ. 2021-08-14T08:18:40.48 0.6 undecidable manual S 156 16.9719 95 -0.12 50
IV.GAVE.EHN. 2021-08-14T08:18:40.09 0.3 undecidable manual P 273 35.0427 91 -0.36 69
IV.MC2.EHZ. 2021-08-14T08:18:39.56 0.6 undecidable manual P 337 28.4493 91 0.14 49
IV.RM33.EHZ. 2021-08-14T08:18:38.15 0.3 undecidable manual P 206 20.4684 93 -0.04 75
IV.MTRA.EHZ. 2021-08-14T08:18:38.60 0.6 undecidable manual S 33 10.878 118 -0.45 46
IV.LNSS.HHZ. 2021-08-14T08:18:38.66 0.1 positive manual P 251 24.4533 92 -0.15 98
IV.TERO.HHZ. 2021-08-14T08:18:38.46 0.3 undecidable manual P 104 23.5542 92 -0.22 72
IV.MMO1.HNZ. 2021-08-14T08:18:38.73 0.6 undecidable manual P 1 24.9528 92 -0.15 49
IV.T1299.EHZ. 2021-08-14T08:18:38.15 0.6 undecidable manual S 217 5.5944 145 0.14 51
IV.SMA1.EHZ. 2021-08-14T08:18:37.78 0.6 undecidable manual S 169 4.995 149 -0.14 50
IV.CAMP.HHZ. 2021-08-14T08:18:37.63 0.6 undecidable manual P 156 16.9719 95 -0.02 51
IV.SMA1.EHZ. 2021-08-14T08:18:36.33 0.1 positive manual P 169 4.995 149 0.22 100
IV.T1299.EHZ. 2021-08-14T08:18:36.41 0.1 positive manual P 217 5.5944 145 0.25 99
IV.MTRA.EHZ. 2021-08-14T08:18:36.77 0.3 undecidable manual P 33 10.878 118 0.01 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:2.1 0.00209028 0.1216 AML other m 2021-08-14T08:18:38.11
IV.SMA1.EHE. ML:2.0 0.0014969830000000001 0.1024 AML other m 2021-08-14T08:18:38.11
IV.MTRA.HNE. ML:2.1 0.0014835915 0.3328 AML other m 2021-08-14T08:18:39.80
IV.MTRA.EHE. ML:2.1 0.0015351815 0.3392 AML other m 2021-08-14T08:18:39.80
IV.MTRA.EHN. ML:2.2 0.0018635845 0.1792 AML other m 2021-08-14T08:18:38.98
IV.MTRA.HNN. ML:2.2 0.0018609955 0.1792 AML other m 2021-08-14T08:18:38.98
IV.RM33.EHN. ML:1.8 0.00040287669999999995 0.1408 AML other m 2021-08-14T08:18:41.78
IV.RM33.HNN. ML:1.8 0.00039867980000000004 0.128 AML other m 2021-08-14T08:18:41.84
IV.RM33.HNE. ML:1.8 0.0004326113 0.1088 AML other m 2021-08-14T08:18:42.07
IV.RM33.EHE. ML:1.8 0.00045782354999999997 0.1152 AML other m 2021-08-14T08:18:42.07
IV.TERO.HHN. ML:1.8 0.0003465 0.58 AML other m 2021-08-14T08:18:42.09
IV.LNSS.HHN. ML:2.0 0.00055 0.38 AML other m 2021-08-14T08:18:42.73
IV.LNSS.HHE. ML:1.9 0.0005250000000000001 0.12 AML other m 2021-08-14T08:18:42.66
IV.MF5.EHN. ML:1.6 0.00014751405 0.3008 AML other m 2021-08-14T08:18:46.76
IV.CSP1.EHN. ML:1.6 0.00011905000000000001 1.7 AML other m 2021-08-14T08:18:48.02
IV.CSP1.EHE. ML:1.6 0.00010300000000000001 0.2 AML other m 2021-08-14T08:18:50.70
IV.TERO.HHE. ML:1.6 0.00025439665 0.1408 AML other m 2021-08-14T08:18:42.98
IV.VCEL.EHN. ML:1.4 0.000060899999999999996 0.16 AML other m 2021-08-14T08:18:53.15
IV.VCEL.EHE. ML:1.3 0.000043130585 0.1408 AML other m 2021-08-14T08:18:53.14
IV.TERO.HNE. ML:1.5 0.00020829835 0.0768 AML other m 2021-08-14T08:18:42.87
IV.TERO.HNN. ML:1.7 0.00033714754999999996 0.0704 AML other m 2021-08-14T08:18:42.12
IV.LNSS.HNE. ML:1.9 0.00047406375000000003 0.1408 AML other m 2021-08-14T08:18:42.66
IV.LNSS.HNN. ML:1.8 0.00039002196500000005 0.1984 AML other m 2021-08-14T08:18:42.73
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download