Earthquake with magnitude of ML 1.9 on date 21-07-2019 and time 04:31:37 (Italy) in region 3 km E L'Aquila (AQ)

A magnitude ML 1.9 earthquake occured in region: 3 km E L'Aquila (AQ), on

  • 21-07-2019 02:31:37 (UTC)
  • 21-07-2019 04:31:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.34, 13.43 at 8 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
Fossa AQ 7 721 70474
Ocre AQ 7 1167 71641
Lucoli AQ 9 1011 72652
Poggio Picenze AQ 10 1136 73788
Sant'Eusanio Forconese AQ 10 394 74182
Tornimparte AQ 12 3187 77369
Villa Sant'Angelo AQ 12 424 77793
San Demetrio ne' Vestini AQ 12 1854 79647
Rocca di Cambio AQ 13 533 80180
Barisciano AQ 14 1828 82008
Scoppito AQ 14 3727 85735
Pizzoli AQ 15 4326 90061
Fagnano Alto AQ 16 418 90479
Prata d'Ansidonia AQ 16 496 90975
Rocca di Mezzo AQ 17 1526 92501
Barete AQ 17 737 93238
Santo Stefano di Sessanio AQ 18 111 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 E of L'Aquila (69753 inhabitants)
42 Km SW of Teramo (54892 inhabitants)
61 Km W of Chieti (51815 inhabitants)
62 Km W of Montesilvano (53738 inhabitants)
66 Km W of Pescara (121014 inhabitants)
67 Km NE of Tivoli (56533 inhabitants)
69 Km E of Terni (111501 inhabitants)
69 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km NE of Velletri (53303 inhabitants)
90 Km SE of Foligno (57155 inhabitants)
92 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
Rev 1000 ML 1.9 2019-07-21
02:31:37
42.34 13.43 8 2019-11-13
14:30:56
Bollettino Sismico Italiano INGV 70792581
Rev 100 ML 1.9 2019-07-21
02:31:37
42.34 13.42 8 2019-07-21
02:38:34
Sala Sismica INGV-Roma 70750971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-21 02:31:37 ± 0.04
Latitude 42.34 ± 0.00
Longitude 13.43 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70792581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 252
Semi-minor axis of confidence ellipse (meter) 230
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 275
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
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) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 1.01623
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 70792581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-29 13:33:05

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 70750971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-21 02:38:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2019-07-21T02:31:57.60 0.3 undecidable manual S 352 0.563 50 0.46 62
IV.EL6.EHZ. 2019-07-21T02:31:56.48 0.1 undecidable manual P 347 1.0162 50 -0.05 82
IV.VVLD.HHZ. 2019-07-21T02:31:55.30 0.3 undecidable manual S 163 0.4928 50 0.22 66
IV.CERT.HHZ. 2019-07-21T02:31:55.90 0.3 undecidable manual S 220 0.5126 50 0.24 66
IV.MIDA.HHZ. 2019-07-21T02:31:55.00 0.1 positive manual P 138 0.9299 50 -0.07 83
IV.INTR.HHZ. 2019-07-21T02:31:54.20 0.1 undecidable manual S 133 0.4829 50 -0.58 81
IV.LNSS.HNZ. 2019-07-21T02:31:52.30 0.3 undecidable manual S 313 0.3876 50 0.36 66
IV.MTRA.EHE. 2019-07-21T02:31:52.50 0.3 undecidable manual S 357 0.4155 50 -0.29 66
IV.FDMO.HHZ. 2019-07-21T02:31:51.52 0.1 positive manual P 340 0.7383 50 -0.27 83
IV.VCEL.EHZ. 2019-07-21T02:31:50.00 0.3 undecidable manual S 80 0.3094 103 0.39 66
IV.MF5.EHZ. 2019-07-21T02:31:50.37 0.1 positive manual P 2 0.6466 50 0.16 87
IT.CSO1.HGZ. 2019-07-21T02:31:50.80 0.3 undecidable manual S 226 0.348 50 0.03 71
IV.POFI.HNE. 2019-07-21T02:31:50.25 0.1 undecidable manual P 161 0.6583 50 -0.17 86
IV.T1299.HNN. 2019-07-21T02:31:49.60 0.3 undecidable manual S 340 0.3121 103 -0.1 70
IV.PTQR.HHZ. 2019-07-21T02:31:49.70 0.3 undecidable manual S 184 0.3202 50 -0.24 68
IV.SMA1.EHZ. 2019-07-21T02:31:49.00 0.3 undecidable manual S 347 0.2968 104 -0.15 70
IV.T0110.HHZ. 2019-07-21T02:31:48.80 0.3 undecidable manual S 113 0.2806 105 0.25 69
IV.MMO1.EHZ. 2019-07-21T02:31:48.76 0.1 undecidable manual P 352 0.563 50 -0.02 91
IV.CERT.HHZ. 2019-07-21T02:31:48.01 0.1 negative manual P 220 0.5126 50 0.08 91
IV.INTR.HHZ. 2019-07-21T02:31:47.57 0.1 positive manual P 133 0.4829 50 0.15 90
IV.FIAM.HHZ. 2019-07-21T02:31:47.10 0.3 undecidable manual S 252 0.241 107 0.03 72
IV.VVLD.HHZ. 2019-07-21T02:31:47.41 0.1 undecidable manual P 163 0.4928 50 -0.18 89
IV.RM33.EHZ. 2019-07-21T02:31:46.90 0.3 undecidable manual S 317 0.2302 108 0.24 70
IV.MTRA.EHE. 2019-07-21T02:31:46.09 0.3 undecidable manual P 357 0.4155 50 -0.18 68
IV.CAMP.HHZ. 2019-07-21T02:31:45.50 0.3 undecidable manual S 356 0.1952 111 0.12 72
IT.CSO1.HGZ. 2019-07-21T02:31:45.01 0.3 undecidable manual P 226 0.348 50 -0.1 70
IV.LNSS.HNZ. 2019-07-21T02:31:45.65 0.1 undecidable manual P 313 0.3876 50 -0.13 92
IV.PTQR.HHZ. 2019-07-21T02:31:44.75 0.1 positive manual P 184 0.3202 50 0.12 93
IV.GIGS.HHZ. 2019-07-21T02:31:44.00 0.3 undecidable manual S 44 0.1547 115 0.04 74
IV.T0110.HHZ. 2019-07-21T02:31:44.05 0.1 positive manual P 113 0.2806 105 0.23 92
IV.T1299.HNN. 2019-07-21T02:31:44.25 0.1 negative manual P 340 0.3121 103 -0.24 91
IV.VCEL.EHZ. 2019-07-21T02:31:44.38 0.1 undecidable manual P 80 0.3094 103 -0.05 95
IV.FIAM.HHZ. 2019-07-21T02:31:43.32 0.1 positive manual P 252 0.241 107 0.35 90
IV.SMA1.EHZ. 2019-07-21T02:31:43.84 0.1 negative manual P 347 0.2968 104 -0.33 90
IV.CAMP.HHZ. 2019-07-21T02:31:42.10 0.1 negative manual P 356 0.1952 111 0.1 96
IV.RM33.EHZ. 2019-07-21T02:31:42.91 0.1 negative manual P 317 0.2302 108 0.18 94
IV.GIGS.HHZ. 2019-07-21T02:31:41.32 0.1 positive manual P 44 0.1547 115 0.15 96
MN.AQU.HNN. 2019-07-21T02:31:39.70 0.3 undecidable manual S 307 0.0207 164 -0.61 66
MN.AQU.HNN. 2019-07-21T02:31:39.00 0.1 positive manual P 307 0.0207 164 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIGS.HHE. ML:0 0.0010547685 0.5408 AML other m 2019-07-21T02:31:46.16
IV.CAMP.HHN. ML:0 0.0009145 0.78 AML other m 2019-07-21T02:31:46.30
IV.GIGS.HHN. ML:0 0.0007635 0.5 AML other m 2019-07-21T02:31:46.18
IV.CAMP.HHE. ML:0 0.0005745 0.6 AML other m 2019-07-21T02:31:47.67
IV.RM33.HNN. ML:0 0.0004700612 0.76 AML other m 2019-07-21T02:31:58.03
IV.FIAM.HHN. ML:0 0.00018716155 0.6192 AML other m 2019-07-21T02:31:57.34
IV.FIAM.HHE. ML:0 0.0002205 0.6 AML other m 2019-07-21T02:31:48.67
IV.RM33.HNE. ML:0 0.000818 0.46 AML other m 2019-07-21T02:31:50.75
IV.RM33.EHE. ML:0 0.0008105 0.46 AML other m 2019-07-21T02:31:50.75
IV.PTQR.HHN. ML:0 0.00010791384 0.8 AML other m 2019-07-21T02:31:55.00
IV.VCEL.EHN. ML:0 0.0009485 0.6 AML other m 2019-07-21T02:31:52.78
IV.PTQR.HHE. ML:0 0.000118543945 0.2192 AML other m 2019-07-21T02:31:53.05
IV.RM33.EHN. ML:0 0.00042222825 0.6 AML other m 2019-07-21T02:31:54.57
IV.SMA1.EHN. ML:0 0.0004585 0.6 AML other m 2019-07-21T02:31:54.65
IV.T0110.HHE. ML:0 0.0006692 0.7392 AML other m 2019-07-21T02:31:55.14
IV.VCEL.EHE. ML:0 0.00085180685 0.84 AML other m 2019-07-21T02:31:54.60
IV.T0110.HHN. ML:0 0.000718 0.48 AML other m 2019-07-21T02:31:55.19
IV.SMA1.EHE. ML:0 0.0005335 0.48 AML other m 2019-07-21T02:31:55.34
IV.INTR.HHN. ML:0 0.00030354955 0.4608 AML other m 2019-07-21T02:32:00.77
IV.CERT.HHE. ML:0 0.00015 0.44 AML other m 2019-07-21T02:32:00.80
IV.INTR.HNN. ML:0 0.00031708315 0.48 AML other m 2019-07-21T02:32:00.76
IV.CERT.HHN. ML:0 9.006158E-5 0.2416 AML other m 2019-07-21T02:31:58.51
IV.VVLD.HHN. ML:0 9.505E-5 0.44 AML other m 2019-07-21T02:32:01.28
IV.INTR.HHE. ML:0 0.0001555612 0.7584 AML other m 2019-07-21T02:32:04.19
IV.INTR.HNE. ML:0 0.00024402955 0.7504 AML other m 2019-07-21T02:32:04.20
IV.FDMO.HHN. ML:0 4.36E-5 0.4 AML other m 2019-07-21T02:32:05.63
IV.VVLD.HHE. ML:0 8.83E-5 0.4 AML other m 2019-07-21T02:32:05.70
IV.FDMO.HHE. ML:0 3.515E-5 0.36 AML other m 2019-07-21T02:32:08.26
IV.OFFI.HHN. ML:2.2 0.000299 0.6 AML other m 2019-07-21T02:32:14.29
IV.MIDA.HHN. ML:0 5.34E-5 0.64 AML other m 2019-07-21T02:32:24.00
IV.MIDA.HHE. ML:0 5.065E-5 0.5 AML other m 2019-07-21T02:32:27.80
IV.FIAM.HNN. ML:1.9 0.00040289195 0.5792 AML other m 2019-07-21T02:31:57.31
IV.MF5.EHN. ML:2 0.0001470069 0.5392 AML other m 2019-07-21T02:32:08.89
IV.MF5.EHE. ML:2 0.000144410675 0.6 AML other m 2019-07-21T02:32:12.09
IV.OFFI.HHE. ML:2.3 0.0003187933 0.6992 AML other m 2019-07-21T02:32:10.17
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