Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 04-05-2020 and time 23:29:39 (Italy) in region 3 km W Poggio Picenze (AQ)

A magnitude ML 1.1 earthquake occured in region: 3 km W Poggio Picenze (AQ), on

  • 04-05-2020 21:29:39 (UTC)
  • 04-05-2020 23:29:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.3280, 13.5070 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Poggio Picenze AQ 3 1136 1136
Fossa AQ 4 721 1857
Sant'Eusanio Forconese AQ 5 394 2251
Ocre AQ 6 1167 3418
San Demetrio ne' Vestini AQ 6 1854 5272
Villa Sant'Angelo AQ 7 424 5696
Barisciano AQ 7 1828 7524
L'Aquila AQ 9 69753 77277
Prata d'Ansidonia AQ 10 496 77773
Fagnano Alto AQ 10 418 78191
Rocca di Cambio AQ 10 533 78724
Santo Stefano di Sessanio AQ 12 111 78835
San Pio delle Camere AQ 13 661 79496
Rocca di Mezzo AQ 13 1526 81022
Fontecchio AQ 14 369 81391
Lucoli AQ 14 1011 82402
Carapelle Calvisio AQ 15 87 82489
Castelvecchio Calvisio AQ 15 153 82642
Calascio AQ 16 137 82779
Caporciano AQ 16 230 83009
Tornimparte AQ 17 3187 86196
Tione degli Abruzzi AQ 17 310 86506
Castel del Monte AQ 19 413 86919

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km E of L'Aquila (69753 inhabitants)
40 Km SW of Teramo (54892 inhabitants)
54 Km W of Chieti (51815 inhabitants)
57 Km W of Montesilvano (53738 inhabitants)
60 Km W of Pescara (121014 inhabitants)
71 Km NE of Tivoli (56533 inhabitants)
74 Km NE of Guidonia Montecelio (88673 inhabitants)
75 Km E of Terni (111501 inhabitants)
93 Km NE of Velletri (53303 inhabitants)
96 Km SE of Foligno (57155 inhabitants)
97 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 1.1 2020-05-04
21:29:39		 42.3282 13.5068 10 2020-11-19
12:36:55		 Bollettino Sismico Italiano INGV 81655151
Reviewed
Rev100 		ML 1.1 2020-05-04
21:29:39		 42.3448 13.4882 11 2020-05-04
21:44:09		 Sala Sismica INGV-Roma 78846371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-04 21:29:39 ± 0.1
Latitude 42.3282 ± 0.0063
Longitude 13.5068 ± 0.0073
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 81655151

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 776
Semi-minor axis of confidence ellipse (meter) 475
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 203
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.32735
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 81655151
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-04 19:35:04

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 78846371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-04 21:44:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EUCT.HNZ. 2020-05-04T21:31:28.65 3.0 undecidable manual Sn -1.96 0
GU.GSCL.HHZ. 2020-05-04T21:30:28.24 3.0 undecidable manual Pg 6.25 0
IV.ROSPO.HHZ. 2020-05-04T21:30:17.96 3.0 undecidable manual S -0.15 0
IV.FIR.HHZ. 2020-05-04T21:30:11.50 3.0 positive manual Pn -0.2 0
IV.MMUR.HNZ. 2020-05-04T21:30:00.03 3.0 positive manual P 0.51 0
IV.SMA1.EHZ. 2020-05-04T21:29:52.80 0.6 undecidable manual S 337 36.3414 50 0.92 36
IV.FIAM.HNN. 2020-05-04T21:29:51.14 0.6 undecidable manual S 258 32.6451 50 0.25 46
IV.TERO.HHZ. 2020-05-04T21:29:50.43 0.6 undecidable manual S 14 33.6441 50 -0.72 40
IV.RM33.HNE. 2020-05-04T21:29:50.50 0.6 undecidable manual S 310 31.2465 50 -0.01 48
IV.VCEL.EHZ. 2020-05-04T21:29:49.90 0.3 undecidable manual S 75 28.3494 50 0.16 71
IV.LAV9.HHZ. 2020-05-04T21:29:49.42 3.0 negative manual P 0.07 0
IV.T0110.HHZ. 2020-05-04T21:29:49.14 0.6 undecidable manual S 116 24.6531 111 0.57 43
IV.CAMP.HHE. 2020-05-04T21:29:49.31 0.6 undecidable manual S 341 24.3534 111 0.84 38
IV.SMA1.EHZ. 2020-05-04T21:29:46.07 0.3 undecidable manual P 337 36.3414 50 -0.53 64
IV.FIAM.HNN. 2020-05-04T21:29:46.16 0.1 undecidable manual P 258 32.6451 50 0.13 94
IV.RM33.HNE. 2020-05-04T21:29:45.60 0.1 undecidable manual P 310 31.2465 50 -0.21 93
IV.VCEL.EHZ. 2020-05-04T21:29:45.67 0.1 undecidable manual P 75 28.3494 50 0.31 91
IV.GIGS.HHE. 2020-05-04T21:29:45.68 0.6 undecidable manual S 21 14.874 123 0.16 48
IV.TERO.HHZ. 2020-05-04T21:29:45.76 0.1 undecidable manual P 14 33.6441 50 -0.42 88
IV.T0110.HHZ. 2020-05-04T21:29:44.78 0.3 undecidable manual P 116 24.6531 111 0.1 72
IV.CAMP.HHE. 2020-05-04T21:29:44.80 0.3 undecidable manual P 341 24.3534 111 0.17 71
IV.FAGN.HHZ. 2020-05-04T21:29:43.64 0.6 undecidable manual S 138 9.3795 136 -0.39 46
MN.AQU.HHN. 2020-05-04T21:29:43.79 0.6 undecidable manual S 289 8.7801 137 -0.11 49
IV.GIGS.HHE. 2020-05-04T21:29:42.66 0.1 undecidable manual P 21 14.874 123 -0.27 94
MN.AQU.HHN. 2020-05-04T21:29:42.02 0.1 undecidable manual P 289 8.7801 137 0.03 100
IV.FAGN.HHZ. 2020-05-04T21:29:41.90 0.1 undecidable manual P 138 9.3795 136 -0.17 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FAGN.HHE. ML:1.4 0.000376 0.36 AML other m 2020-05-04T21:29:46.19
IV.FAGN.HHN. ML:1.4 0.00038500000000000003 0.46 AML other m 2020-05-04T21:29:48.95
IV.TERO.HHE. ML:0.9 0.0000335 0.64 AML other m 2020-05-04T21:29:51.32
IV.VCEL.EHN. ML:1.1 0.0000631 1.52 AML other m 2020-05-04T21:29:52.86
IV.T0110.HHN. ML:1.0 0.00006205 0.22 AML other m 2020-05-04T21:29:53.18
IV.VCEL.EHE. ML:1.1 0.00006405 0.46 AML other m 2020-05-04T21:29:54.17
IV.TERO.HHN. ML:0.8 0.0000269 1.52 AML other m 2020-05-04T21:29:55.17
IV.T0110.HHE. ML:0.9 0.000046649999999999996 0.56 AML other m 2020-05-04T21:30:00.43
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