Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 30-09-2019 and time 02:03:07 (UTC) in region 6 km W Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 6 km W Arquata del Tronto (AP), on

  • 30-09-2019 02:03:07 (UTC)
  • 30-09-2019 04:03:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7820, 13.2240 at 9 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
Arquata del Tronto AP 6 1178 1178
Accumoli RI 10 667 1845
Norcia PG 11 4957 6802
Montegallo AP 11 523 7325
Castelsantangelo sul Nera MC 14 281 7606
Acquasanta Terme AP 15 2916 10522
Montemonaco AP 16 604 11126
Amatrice RI 18 2657 13783
Cascia PG 19 3217 17000
Preci PG 19 724 17724
Cittareale RI 19 482 18206
Ussita MC 19 444 18650
Visso MC 20 1107 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Teramo (54892 inhabitants)
47 Km E of Foligno (57155 inhabitants)
50 Km N of L'Aquila (69753 inhabitants)
53 Km E of Terni (111501 inhabitants)
77 Km E of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
91 Km NW of Chieti (51815 inhabitants)
96 Km S of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 Km NE of Tivoli (56533 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 2019-09-30
02:03:07		 42.7822 13.2238 9 2020-02-28
16:42:20		 Bollettino Sismico Italiano INGV 75829911
Reviewed
Rev100 		ML 1.1 2019-09-30
02:03:07		 42.7798 13.236 6 2019-09-30
02:14:22		 Sala Sismica INGV-Roma 72909501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-30 02:03:07 ± 0.07
Latitude 42.7822 ± 0.0036
Longitude 13.2238 ± 0.0074
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75829911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 631
Semi-minor axis of confidence ellipse (meter) 168
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28149
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 72909501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-30 02:14:22

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 75829911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-25 08:45:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MBAL.EHZ. 2019-09-30T02:04:52.27 3.0 undecidable manual Sg 6.95 0
IV.CET2.HHZ. 2019-09-30T02:04:39.90 3.0 undecidable manual Sg 9.28 0
GU.PZZ.HHZ. 2019-09-30T02:04:17.28 3.0 undecidable manual Pn 5.2 0
GU.TRAV.HHZ. 2019-09-30T02:04:16.35 3.0 undecidable manual Pn 2.05 0
IV.MCRV.HHZ. 2019-09-30T02:04:02.90 3.0 undecidable manual Sg 4.86 0
IV.IST3.HHZ. 2019-09-30T02:04:01.52 3.0 negative manual Pg 8.04 0
MN.TIP.HHZ. 2019-09-30T02:03:53.48 3.0 negative manual Pn -4.6 0
IV.PAOL.HHZ. 2019-09-30T02:03:42.71 3.0 undecidable manual S -3.16 0
IV.PAOL.HHZ. 2019-09-30T02:03:22.77 3.0 undecidable manual P -1 0
IV.MF5.EHN. 2019-09-30T02:03:19.09 0.6 undecidable manual S 40 29.8479 107 0.93 37
IV.RM33.EHZ. 2019-09-30T02:03:18.58 0.3 undecidable manual S 181 30.3474 50 0.27 70
IV.FDMO.HHN. 2019-09-30T02:03:18.03 0.6 undecidable manual S 339 30.3474 50 -0.28 47
IV.ATTE.HHZ. 2019-09-30T02:03:18.53 3.0 undecidable manual P -1.43 0
IV.CAMP.HHE. 2019-09-30T02:03:17.99 0.6 undecidable manual S 151 31.2465 50 -0.56 43
IV.LNSS.HNZ. 2019-09-30T02:03:16.70 0.6 undecidable manual S 217 24.8529 110 0.15 48
IV.T1299.HNN. 2019-09-30T02:03:14.40 0.6 undecidable manual S 164 17.0718 118 0.32 47
IV.SMA1.EHZ. 2019-09-30T02:03:14.59 0.3 undecidable manual S 152 19.1697 116 -0.12 74
IV.MMO1.EHZ. 2019-09-30T02:03:13.31 0.3 undecidable manual S 33 15.4734 121 -0.27 72
IV.RM33.EHZ. 2019-09-30T02:03:13.76 0.1 undecidable manual P 181 30.3474 50 0.09 97
IV.MC2.EHZ. 2019-09-30T02:03:13.47 0.3 undecidable manual S 349 14.5743 122 0.14 74
IV.MF5.EHN. 2019-09-30T02:03:13.97 0.3 undecidable manual P 40 29.8479 107 0.38 68
IV.CAMP.HHE. 2019-09-30T02:03:13.39 0.1 undecidable manual P 151 31.2465 50 -0.43 90
IV.FDMO.HHN. 2019-09-30T02:03:13.43 0.1 undecidable manual P 339 30.3474 50 -0.24 94
IV.NRCA.HHZ. 2019-09-30T02:03:12.02 0.3 undecidable manual S 303 10.5783 131 -0.19 74
IV.LNSS.HNZ. 2019-09-30T02:03:12.65 0.1 undecidable manual P 217 24.8529 110 -0.01 99
IV.SMA1.EHZ. 2019-09-30T02:03:11.50 0.1 undecidable manual P 152 19.1697 116 -0.09 99
IV.T1299.HNN. 2019-09-30T02:03:11.42 0.1 undecidable manual P 164 17.0718 118 0.19 97
IV.NRCA.HHZ. 2019-09-30T02:03:10.25 0.1 positive manual P 303 10.5783 131 0.1 100
IV.MMO1.EHZ. 2019-09-30T02:03:10.83 0.1 undecidable manual P 33 15.4734 121 -0.12 99
IV.MC2.EHZ. 2019-09-30T02:03:10.94 0.1 undecidable manual P 349 14.5743 122 0.14 98
IT.RMMM.HGZ. 2019-09-30T02:03:06.36 3.0 undecidable manual P -2.05 0
IV.SAMA.HHZ. 2019-09-30T02:03:06.48 3.0 negative manual P -1.48 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.0001851238 0.0816 AML other m 2019-09-30T02:03:12.40
IV.NRCA.HHN. ML:1.1 0.0001551421 0.08 AML other m 2019-09-30T02:03:12.77
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