Earthquake with magnitude of ML 1.9 on date 23-07-2020 and time 02:27:42 (Italy) in region 3 km SE L'Aquila (AQ)

A magnitude ML 1.9 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) 42.34, 13.42 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Fossa AQ 7 721 71641
Lucoli AQ 9 1011 72652
Sant'Eusanio Forconese AQ 10 394 73046
Poggio Picenze AQ 10 1136 74182
Tornimparte AQ 11 3187 77369
Villa Sant'Angelo AQ 12 424 77793
Rocca di Cambio AQ 12 533 78326
San Demetrio ne' Vestini AQ 12 1854 80180
Barisciano AQ 14 1828 82008
Scoppito AQ 14 3727 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 19 369 93718
San Pio delle Camere AQ 20 661 94379

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km SE of L'Aquila (69753 inhabitants)
43 Km SW of Teramo (54892 inhabitants)
61 Km W of Chieti (51815 inhabitants)
63 Km W of Montesilvano (53738 inhabitants)
66 Km NE of Tivoli (56533 inhabitants)
67 Km W of Pescara (121014 inhabitants)
68 Km E of Terni (111501 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
91 Km SE of Foligno (57155 inhabitants)
92 Km NE of Roma (2864731 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
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 ± 0.1
Latitude 42.34 ± 0.01
Longitude 13.42 ± 0.01
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 81261641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 604
Semi-minor axis of confidence ellipse (meter) 451
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 173
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.77162
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 12
Magnitude information

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
IX.MNT3.HHZ.02 2020-07-23T00:28:38.57 3.0 undecidable manual Sn -2.1 0
IV.CMPR.HHZ. 2020-07-23T00:28:23.83 3.0 undecidable manual Pn 0.9 0
IV.ROSPO.HHZ. 2020-07-23T00:28:22.18 3.0 undecidable manual S 0.5 0
IV.MF5.EHZ. 2020-07-23T00:28:07.00 3.0 undecidable manual S 0.22 0
IV.MC2.EHZ. 2020-07-23T00:28:04.94 3.0 undecidable manual S 0.01 0
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 353 0.5666 50 0.57 40
IV.MIDA.HHZ. 2020-07-23T00:28:00.93 3.0 negative manual P -0.49 0
IV.MNTT.EHZ. 2020-07-23T00:27:58.32 3.0 positive manual P 0.39 0
IV.GUMA.HHZ. 2020-07-23T00:27:57.69 3.0 negative manual P -0.04 0
IV.MTRA.EHZ. 2020-07-23T00:27:57.76 0.6 undecidable manual S 357 0.42 50 -0.45 42
IV.CSP1.EHZ. 2020-07-23T00:27:57.65 1.0 undecidable manual P 348 0.7716 50 -0.13 21
IV.MF5.EHZ. 2020-07-23T00:27:56.24 3.0 negative manual P -0.09 0
IV.OFFI.HHZ. 2020-07-23T00:27:56.37 3.0 negative manual P 0.4 0
IV.VCEL.EHZ. 2020-07-23T00:27:55.38 0.3 undecidable manual S 79 0.3139 50 0.32 67
IV.LPEL.HHZ. 2020-07-23T00:27:55.57 3.0 positive manual P -0.47 0
IV.TERO.HHZ. 2020-07-23T00:27:54.58 0.3 undecidable manual S 25 0.3157 50 -0.53 63
IV.MMO1.EHZ. 2020-07-23T00:27:54.21 0.1 undecidable manual P 353 0.5666 50 -0.07 89
IV.SMA1.EHZ. 2020-07-23T00:27:54.76 0.6 undecidable manual S 348 0.3004 50 0.09 47
IV.MC2.EHZ. 2020-07-23T00:27:54.94 3.0 positive manual P -0.35 0
IV.NRCA.HHZ. 2020-07-23T00:27:54.04 0.1 negative manual P 336 0.5459 50 0.11 89
IV.INTR.HHZ. 2020-07-23T00:27:52.78 3.0 undecidable manual P -0.39 0
IV.RM33.EHZ. 2020-07-23T00:27:52.78 0.3 undecidable manual S 318 0.2311 111 0.29 68
IV.VVLD.HHZ. 2020-07-23T00:27:52.65 3.0 negative manual P -0.48 0
IV.FIAM.HHZ. 2020-07-23T00:27:52.65 0.6 undecidable manual S 253 0.2365 110 -0.03 48
IV.CAMP.HHZ. 2020-07-23T00:27:51.39 0.3 undecidable manual S 357 0.1996 114 0.03 72
IV.MTRA.EHZ. 2020-07-23T00:27:51.51 0.1 undecidable manual P 357 0.42 50 -0.26 88
IV.GIGS.HHZ. 2020-07-23T00:27:50.04 0.3 undecidable manual S 44 0.161 118 0.01 73
IV.PTQR.HHZ. 2020-07-23T00:27:49.74 3.0 positive manual P -0.05 0
IV.T0110.HHZ. 2020-07-23T00:27:49.51 3.0 negative manual P -0.04 0
IV.TERO.HHZ. 2020-07-23T00:27:49.83 1.0 negative manual P 25 0.3157 50 -0.16 23
IV.SMA1.EHZ. 2020-07-23T00:27:49.67 0.3 negative manual P 348 0.3004 50 -0.06 71
IV.VCEL.EHZ. 2020-07-23T00:27:49.98 0.3 negative manual P 79 0.3139 50 0.02 71
IV.RM33.EHZ. 2020-07-23T00:27:48.60 0.6 negative manual P 318 0.2311 111 0.13 47
IV.FIAM.HHZ. 2020-07-23T00:27:48.66 0.6 positive manual P 253 0.2365 110 0.08 47
IV.CAMP.HHZ. 2020-07-23T00:27:47.97 0.1 negative manual P 357 0.1996 114 0.15 94
IV.GIGS.HHZ. 2020-07-23T00:27:47.28 0.1 undecidable manual P 44 0.161 118 0.23 93
IV.FAGN.HHZ. 2020-07-23T00:27:46.85 3.0 negative manual P 0.16 0
MN.AQU.HNN. 2020-07-23T00:27:45.98 0.3 undecidable manual S 323 0.0216 166 -0.46 68
MN.AQU.HNN. 2020-07-23T00:27:44.96 0.1 undecidable manual P 323 0.0216 166 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FAGN.HHN. ML:2.2 0.00161 0.64 AML other m 2020-07-23T00:27:50.84
IV.CAMP.HHN. ML:1.9 0.0004825 1.44 AML other m 2020-07-23T00:27:52.14
IV.CAMP.HHE. ML:1.7 0.0003075 0.4 AML other m 2020-07-23T00:27:52.44
IV.FIAM.HHE. ML:1.5 0.000191 0.4 AML other m 2020-07-23T00:27:52.89
IV.RM33.HNE. ML:1.9 0.000521 0.5 AML other m 2020-07-23T00:27:53.61
IV.RM33.EHE. ML:2 0.000574 0.48 AML other m 2020-07-23T00:27:53.62
IV.FAGN.HHE. ML:2.2 0.001435 1.56 AML other m 2020-07-23T00:27:53.88
IV.RM33.HNN. ML:1.9 0.000428 0.94 AML other m 2020-07-23T00:27:54.08
IV.RM33.EHN. ML:1.8 0.000402 1.78 AML other m 2020-07-23T00:27:54.98
IV.TERO.HHE. ML:1.8 0.0002595 0.46 AML other m 2020-07-23T00:27:54.59
IV.FIAM.HHN. ML:1.6 0.0002355 0.76 AML other m 2020-07-23T00:27:54.57
IV.T0110.HHN. ML:2 0.0004715 0.32 AML other m 2020-07-23T00:27:55.31
IV.TERO.HHN. ML:1.8 0.0002595 0.42 AML other m 2020-07-23T00:27:55.39
IV.PTQR.HHN. ML:1.6 0.0001815 0.58 AML other m 2020-07-23T00:27:56.42
IV.PTQR.HHE. ML:1.6 0.000158 0.3 AML other m 2020-07-23T00:27:58.25
IV.VCEL.EHN. ML:2.2 0.0006295 0.84 AML other m 2020-07-23T00:27:58.26
IV.MTRA.EHN. ML:1.8 0.000196 0.42 AML other m 2020-07-23T00:27:58.73
IV.SMA1.EHE. ML:1.8 0.00024 0.42 AML other m 2020-07-23T00:27:59.35
IV.T0110.HHE. ML:2 0.0004165 1.66 AML other m 2020-07-23T00:27:59.16
IV.VCEL.EHE. ML:2.2 0.0007115 0.34 AML other m 2020-07-23T00:27:59.28
IV.SMA1.EHN. ML:1.6 0.000185 0.62 AML other m 2020-07-23T00:28:00.56
IV.MTRA.EHE. ML:1.9 0.0002195 0.58 AML other m 2020-07-23T00:28:00.48
IV.NRCA.HHN. ML:1.6 8.805E-5 0.1 AML other m 2020-07-23T00:28:03.26
IV.INTR.HHN. ML:1.8 0.000154 0.6 AML other m 2020-07-23T00:28:04.66
IV.NRCA.HHE. ML:1.8 0.0001425 0.34 AML other m 2020-07-23T00:28:06.36
IV.VVLD.HHE. ML:1.6 8.545E-5 1.26 AML other m 2020-07-23T00:28:06.74
IV.VVLD.HHN. ML:1.6 8.775E-5 0.32 AML other m 2020-07-23T00:28:06.64
IV.MF5.EHN. ML:1.6 6.495E-5 1.32 AML other m 2020-07-23T00:28:07.81
IV.INTR.HHE. ML:1.7 0.0001275 1.26 AML other m 2020-07-23T00:28:07.90
IV.LPEL.HHN. ML:1.8 0.0001026 1.34 AML other m 2020-07-23T00:28:07.95
IV.LPEL.HHE. ML:1.8 9.665E-5 1.66 AML other m 2020-07-23T00:28:09.91
IV.GUMA.HHN. ML:2 0.000148 0.2 AML other m 2020-07-23T00:28:10.22
IV.OFFI.HHE. ML:2 0.0001715 0.28 AML other m 2020-07-23T00:28:10.71
IV.GUMA.HHE. ML:2.1 0.000168 0.48 AML other m 2020-07-23T00:28:10.75
IV.OFFI.HHN. ML:2.1 0.000206 0.5 AML other m 2020-07-23T00:28:12.13
IV.INTR.HNN. ML:2.6 0.001009 0.42 AML other m 2020-07-23T00:28:12.42
IV.INTR.HNE. ML:2.6 0.0008775 0.64 AML other m 2020-07-23T00:28:12.58
IV.MF5.EHE. ML:1.8 9.06E-5 1.58 AML other m 2020-07-23T00:28:13.04
IV.MNTT.EHN. ML:2 0.0001485 1.02 AML other m 2020-07-23T00:28:13.01
IV.MNTT.EHE. ML:2 0.00014225 0.48 AML other m 2020-07-23T00:28:13.64
IV.MIDA.HHN. ML:1.5 2.92E-5 0.42 AML other m 2020-07-23T00:28:21.94
IV.MIDA.HHE. ML:1.5 2.835E-5 0.58 AML other m 2020-07-23T00:28:29.72
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