Earthquake with magnitude of ML 1.8 on date 23-07-2020 and time 00:27:42 (UTC) in region 3 km SE L'Aquila (AQ)

A magnitude ML 1.8 earthquake occured in region: 3 km SE L'Aquila (AQ), on

  • 23-07-2020 00:27:42 (UTC)
  • 23-07-2020 02:27:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.33, 13.41 at 10 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
L'Aquila AQ 3 69753 69753
Ocre AQ 7 1167 70920
Lucoli AQ 7 1011 71931
Fossa AQ 8 721 72652
Tornimparte AQ 10 3187 75839
Sant'Eusanio Forconese AQ 10 394 76233
Poggio Picenze AQ 11 1136 77369
Rocca di Cambio AQ 12 533 77902
Villa Sant'Angelo AQ 12 424 78326
San Demetrio ne' Vestini AQ 13 1854 80180
Scoppito AQ 14 3727 83907
Barisciano AQ 15 1828 85735
Pizzoli AQ 15 4326 90061
Fagnano Alto AQ 16 418 90479
Rocca di Mezzo AQ 16 1526 92005
Prata d'Ansidonia AQ 17 496 92501
Barete AQ 17 737 93238
Santo Stefano di Sessanio AQ 19 111 93349
Fontecchio AQ 20 369 93718

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of L'Aquila (69753 inhabitants)
44 Km SW of Teramo (54892 inhabitants)
62 Km W of Chieti (51815 inhabitants)
64 Km W of Montesilvano (53738 inhabitants)
65 Km NE of Tivoli (56533 inhabitants)
67 Km NE of Guidonia Montecelio (88673 inhabitants)
68 Km W of Pescara (121014 inhabitants)
68 Km E of Terni (111501 inhabitants)
89 Km NE of Velletri (53303 inhabitants)
91 Km SE of Foligno (57155 inhabitants)
91 Km NE of Roma (2864731 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 2020-07-23
00:27:42
42.33 13.41 10 2020-11-19
12:37:00
Bollettino Sismico Italiano INGV 82712901
Reviewed
Rev100
ML 1.9 2020-07-23
00:27:42
42.34 13.42 10 2020-07-23
00:32:58
Sala Sismica INGV-Roma 81261641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-07-23 00:27:42 ± 0.06
Latitude 42.33 ± 0.00
Longitude 13.41 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 82712901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 245
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 247
Circular confidence region, given by single value of horizontal uncertainty (meter) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.9308
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 53
Type of magnitude ML
Reference to an origin 82712901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-09-07 14:21:47

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 42
Type of magnitude ML
Reference to an origin 81261641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-07-23 00:32:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.LPEL.HHZ. 2020-07-23T00:28:03.68 3.0 undecidable manual S -2.59 0
IV.MMO1.EHZ. 2020-07-23T00:28:03.12 0.6 undecidable manual S 354 0.5711 50 0.4 41
IV.MIDA.HHZ. 2020-07-23T00:28:00.45 0.3 undecidable manual P 137 0.9308 50 -0.08 62
IV.VVLD.HHZ. 2020-07-23T00:28:00.00 0.3 undecidable manual S 161 0.4874 50 -0.23 66
IV.INTR.HHZ. 2020-07-23T00:28:00.60 0.3 undecidable manual S 131 0.4847 50 0.44 63
IV.MTRA.EHZ. 2020-07-23T00:27:58.07 0.3 undecidable manual S 358 0.4254 50 -0.33 65
IV.MNTT.EHZ. 2020-07-23T00:27:58.30 0.3 undecidable manual P 10 0.7428 50 0.98 48
IV.GUMA.HHZ. 2020-07-23T00:27:57.69 3.0 negative manual P -0.04 0
IV.CSP1.EHZ. 2020-07-23T00:27:57.78 0.3 undecidable manual P 349 0.7752 50 -0.09 64
IV.MF5.EHZ. 2020-07-23T00:27:56.21 0.1 undecidable manual P 3 0.6574 50 0.36 82
IV.OFFI.HHZ. 2020-07-23T00:27:56.33 0.3 undecidable manual P 18 0.6358 50 0.84 52
IV.VCEL.EHZ. 2020-07-23T00:27:55.38 0.3 undecidable manual S 79 0.3229 50 0.02 71
IV.T1299.HNN. 2020-07-23T00:27:55.41 0.6 undecidable manual S 343 0.3175 50 0.21 46
IV.LPEL.HHZ. 2020-07-23T00:27:55.57 3.0 positive manual P -0.47 0
IV.MMO1.EHZ. 2020-07-23T00:27:54.17 0.1 undecidable manual P 354 0.5711 50 -0.21 86
IV.PTQR.HHZ. 2020-07-23T00:27:54.58 0.3 undecidable manual S 182 0.3094 50 -0.37 66
IV.MC2.EHZ. 2020-07-23T00:27:54.88 0.3 undecidable manual P 344 0.6025 50 -0.04 67
IV.T0110.HHZ. 2020-07-23T00:27:54.80 0.6 undecidable manual S 111 0.2878 50 0.47 43
IV.SMA1.EHZ. 2020-07-23T00:27:54.63 0.6 undecidable manual S 349 0.304 50 -0.18 46
IV.NRCA.HHZ. 2020-07-23T00:27:53.88 0.3 undecidable manual P 337 0.5477 50 -0.1 67
IV.RM33.EHZ. 2020-07-23T00:27:52.80 0.3 undecidable manual S 321 0.2293 111 0.36 67
IV.INTR.HHZ. 2020-07-23T00:27:52.97 0.3 undecidable manual P 131 0.4847 50 0.06 68
IV.FIAM.HHZ. 2020-07-23T00:27:52.65 0.6 undecidable manual S 254 0.2266 111 0.32 45
IV.VVLD.HHZ. 2020-07-23T00:27:52.56 0.3 undecidable manual P 161 0.4874 50 -0.38 64
IV.MTRA.EHZ. 2020-07-23T00:27:51.48 0.3 undecidable manual P 358 0.4254 50 -0.41 64
IV.CAMP.HHZ. 2020-07-23T00:27:51.39 0.3 undecidable manual S 359 0.2041 113 -0.15 71
IV.LNSS.HNZ. 2020-07-23T00:27:51.24 0.3 undecidable manual P 315 0.3858 50 0.03 70
IV.FAGN.HHZ. 2020-07-23T00:27:50.24 0.6 undecidable manual S 117 0.143 121 0.82 39
IV.GIGS.HHZ. 2020-07-23T00:27:50.04 0.3 undecidable manual S 44 0.17 117 -0.3 69
IV.T0110.HHZ. 2020-07-23T00:27:49.48 0.3 undecidable manual P 111 0.2878 50 -0.06 71
IV.SMA1.EHZ. 2020-07-23T00:27:49.61 0.1 negative manual P 349 0.304 50 -0.21 91
IV.VCEL.EHZ. 2020-07-23T00:27:49.93 0.1 undecidable manual P 79 0.3229 50 -0.2 91
IV.PTQR.HHZ. 2020-07-23T00:27:49.71 0.1 positive manual P 182 0.3094 50 -0.19 92
IV.T1299.HNN. 2020-07-23T00:27:49.99 0.1 undecidable manual P 343 0.3175 50 -0.05 94
IV.TERO.HHZ. 2020-07-23T00:27:49.76 0.3 undecidable manual P 26 0.3238 50 -0.39 66
IV.RM33.EHZ. 2020-07-23T00:27:48.58 0.1 undecidable manual P 321 0.2293 111 0.13 94
IV.FIAM.HHZ. 2020-07-23T00:27:48.61 0.1 positive manual P 254 0.2266 111 0.22 92
IV.GIGS.HHZ. 2020-07-23T00:27:47.22 0.1 negative manual P 44 0.17 117 -0.02 97
IV.CAMP.HHZ. 2020-07-23T00:27:47.97 0.1 negative manual P 359 0.2041 113 0.04 96
IV.FAGN.HHZ. 2020-07-23T00:27:46.88 0.3 undecidable manual P 117 0.143 121 0.17 71
MN.AQU.HNN. 2020-07-23T00:27:45.92 0.1 undecidable manual S 348 0.0234 165 -0.5 90
MN.AQU.HNN. 2020-07-23T00:27:45.00 0.1 positive manual P 348 0.0234 165 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FAGN.HHE. ML:2.2 0.00132485695 0.16 AML other m 2020-07-23T00:27:50.77
IV.FAGN.HHN. ML:2.2 0.0013463857 0.14 AML other m 2020-07-23T00:27:50.84
IV.CAMP.HHE. ML:1.7 0.00030782845 0.4 AML other m 2020-07-23T00:27:52.44
IV.CAMP.HHN. ML:1.9 0.0004820695 0.56 AML other m 2020-07-23T00:27:52.14
IV.RM33.HNN. ML:1.9 0.0004273734 0.22 AML other m 2020-07-23T00:27:54.08
IV.RM33.HNE. ML:1.8 0.00040000195 0.26 AML other m 2020-07-23T00:27:53.86
IV.RM33.EHE. ML:1.8 0.0003937847 0.26 AML other m 2020-07-23T00:27:53.86
IV.RM33.EHN. ML:1.8 0.0004019879 0.22 AML other m 2020-07-23T00:27:53.98
IV.FIAM.HHE. ML:1.5 0.0001906842 0.4 AML other m 2020-07-23T00:27:52.89
IV.FIAM.HNE. ML:2.3 0.00114310195 0.48 AML other m 2020-07-23T00:27:52.68
IV.FIAM.HNN. ML:1.8 0.0003641687 0.48 AML other m 2020-07-23T00:27:54.94
IV.FIAM.HHN. ML:1.6 0.0002101809 0.42 AML other m 2020-07-23T00:27:52.90
IV.T0110.HHE. ML:1.9 0.0003750457 0.54 AML other m 2020-07-23T00:27:57.38
IV.T0110.HHN. ML:2 0.0004716307 0.32 AML other m 2020-07-23T00:27:55.31
IV.SMA1.EHN. ML:1.6 0.00018460145 0.6196 AML other m 2020-07-23T00:28:00.56
IV.SMA1.EHE. ML:1.8 0.00024000645 0.42 AML other m 2020-07-23T00:27:59.35
IV.PTQR.HHE. ML:1.6 0.00015797875 0.3 AML other m 2020-07-23T00:27:58.25
IV.PTQR.HHN. ML:1.6 0.00015854955 0.2 AML other m 2020-07-23T00:27:55.71
IV.TERO.HHN. ML:1.8 0.00025632535 0.2 AML other m 2020-07-23T00:27:56.39
IV.TERO.HNE. ML:1.9 0.0002841735 0.2 AML other m 2020-07-23T00:27:57.10
IV.TERO.HNN. ML:1.8 0.0002274322 0.18 AML other m 2020-07-23T00:27:56.40
IV.TERO.HHE. ML:1.8 0.0002205659 0.12 AML other m 2020-07-23T00:27:54.82
IV.VCEL.EHE. ML:2.2 0.0007116596 0.34 AML other m 2020-07-23T00:27:59.28
IV.VCEL.EHN. ML:2.1 0.00053246325 0.28 AML other m 2020-07-23T00:27:56.85
IV.MTRA.EHE. ML:1.9 0.00021447035 0.14 AML other m 2020-07-23T00:28:00.48
IV.MTRA.EHN. ML:1.8 0.0001771213 0.2 AML other m 2020-07-23T00:27:59.52
IV.MTRA.HNN. ML:1.8 0.00017969935 0.16 AML other m 2020-07-23T00:27:59.60
IV.MTRA.HNE. ML:1.9 0.0002278658 0.15 AML other m 2020-07-23T00:28:00.47
IV.VVLD.HNN. ML:1.7 0.0001096227 0.36 AML other m 2020-07-23T00:28:06.81
IV.VVLD.HHE. ML:1.5 7.840468E-5 0.36 AML other m 2020-07-23T00:28:06.74
IV.VVLD.HHN. ML:1.6 8.7796085E-5 0.32 AML other m 2020-07-23T00:28:06.64
IV.INTR.HHN. ML:1.7 0.00012593335 0.28 AML other m 2020-07-23T00:28:01.03
IV.INTR.HHE. ML:1.7 0.000122606665 0.44 AML other m 2020-07-23T00:28:06.90
IV.NRCA.HHE. ML:1.8 0.00012882035 0.12 AML other m 2020-07-23T00:28:04.66
IV.NRCA.HNE. ML:1.8 0.0001178975 0.11 AML other m 2020-07-23T00:28:04.72
IV.NRCA.HHN. ML:1.6 8.8051805E-5 0.1 AML other m 2020-07-23T00:28:03.26
IV.LPEL.HNN. ML:1.9 0.00012398395 0.18 AML other m 2020-07-23T00:28:08.51
IV.LPEL.HHN. ML:1.8 9.714785E-5 0.18 AML other m 2020-07-23T00:28:07.37
IV.LPEL.HHE. ML:1.8 9.659807E-5 0.34 AML other m 2020-07-23T00:28:09.91
IV.MF5.EHE. ML:1.8 9.0410445E-5 0.42 AML other m 2020-07-23T00:28:13.04
IV.MF5.EHN. ML:1.6 5.8511E-5 0.48 AML other m 2020-07-23T00:28:15.92
IV.OFFI.HHN. ML:2.1 0.000205966 0.5 AML other m 2020-07-23T00:28:12.13
IV.OFFI.HHE. ML:2 0.00017151205 0.28 AML other m 2020-07-23T00:28:10.71
IV.GUMA.HNE. ML:2.1 0.00018037745 0.45 AML other m 2020-07-23T00:28:10.77
IV.GUMA.HHE. ML:2.1 0.000168042 0.48 AML other m 2020-07-23T00:28:10.75
IV.GUMA.HHN. ML:2 0.0001483453 0.2 AML other m 2020-07-23T00:28:10.22
IV.CSP1.EHN. ML:1.6 4.32301E-5 0.42 AML other m 2020-07-23T00:28:20.82
IV.CSP1.EHE. ML:1.6 4.830748E-5 0.44 AML other m 2020-07-23T00:28:20.81
IV.MNTT.EHN. ML:2 0.00014375775 0.3404 AML other m 2020-07-23T00:28:15.28
IV.MNTT.EHE. ML:2 0.00014237957 0.4796 AML other m 2020-07-23T00:28:13.64
IV.MIDA.HHE. ML:1.5 2.836189E-5 0.58 AML other m 2020-07-23T00:28:29.72
IV.MIDA.HNE. ML:2.3 0.00019181675 0.74 AML other m 2020-07-23T00:28:24.53
IV.MIDA.HHN. ML:1.5 2.9210055E-5 0.42 AML other m 2020-07-23T00:28:21.94
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download