Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 15-10-2019 and time 19:01:59 (UTC) in region 5 km W Arquata del Tronto (AP)

A magnitude ML 1.1 earthquake occured in region: 5 km W Arquata del Tronto (AP), on

  • 15-10-2019 19:01:59 (UTC)
  • 15-10-2019 21:01:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7520, 13.2450 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
Arquata del Tronto AP 5 1178 1178
Accumoli RI 6 667 1845
Montegallo AP 13 523 2368
Norcia PG 13 4957 7325
Acquasanta Terme AP 14 2916 10241
Amatrice RI 14 2657 12898
Cittareale RI 16 482 13380
Castelsantangelo sul Nera MC 18 281 13661
Montemonaco AP 18 604 14265
Cascia PG 19 3217 17482

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km W of Teramo (54892 inhabitants)
46 Km N of L'Aquila (69753 inhabitants)
50 Km E of Foligno (57155 inhabitants)
53 Km E of Terni (111501 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
80 Km SE of Perugia (166134 inhabitants)
86 Km W of Pescara (121014 inhabitants)
88 Km NW of Chieti (51815 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
99 Km S of Ancona (100861 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 2019-10-15
19:01:59		 42.752 13.2452 11 2020-02-28
16:41:58		 Bollettino Sismico Italiano INGV 73407381
Reviewed
Rev100 		ML 1.1 2019-10-15
19:01:59		 42.7532 13.2447 10 2019-10-15
19:10:46		 Sala Sismica INGV-Roma 73275461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-15 19:01:59 ± 0.04
Latitude 42.7520 ± 0.0018
Longitude 13.2452 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73407381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 344
Semi-minor axis of confidence ellipse (meter) 101
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39210
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 73407381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-10-23 09:58:36

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 73275461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-15 19:10:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RMP.HHZ. 2019-10-15T19:02:32.05 3.0 undecidable manual S -0.27 0
IV.FDMO.HHZ. 2019-10-15T19:02:11.05 0.3 undecidable manual S 338 34.0437 50 -0.1 72
IV.MF5.EHZ. 2019-10-15T19:02:10.68 0.6 undecidable manual S 34 31.4463 50 0.23 47
IV.RM33.EHZ. 2019-10-15T19:02:09.19 0.6 undecidable manual S 185 27.0507 50 -0.09 48
IV.LNSS.HHZ. 2019-10-15T19:02:08.26 0.3 undecidable manual S 225 23.4543 50 -0.07 73
IV.GIGS.HHZ. 2019-10-15T19:02:07.41 0.6 undecidable manual P 141 42.624 50 -0.12 47
IV.ARRO.EHE. 2019-10-15T19:02:07.84 0.6 undecidable manual P 244 43.5231 50 0.17 46
IV.MF5.EHZ. 2019-10-15T19:02:06.15 0.3 undecidable manual P 34 31.4463 50 0.34 69
IV.OFFI.HHN. 2019-10-15T19:02:06.91 1.0 undecidable manual P 60 41.2254 50 -0.41 22
IV.MMO1.EHZ. 2019-10-15T19:02:06.43 0.3 undecidable manual S 22 17.6712 121 -0.18 73
IV.MC2.EHZ. 2019-10-15T19:02:06.90 0.3 undecidable manual S 346 18.2706 120 0.1 74
IV.FDMO.HHZ. 2019-10-15T19:02:05.98 0.3 undecidable manual P 338 34.0437 50 -0.24 70
IV.FEMA.HNZ. 2019-10-15T19:02:05.58 0.6 undecidable manual P 326 28.2495 50 0.26 47
IV.T1299.HNZ. 2019-10-15T19:02:05.67 0.3 undecidable manual S 167 13.3755 128 0.28 72
IV.SMA1.EHZ. 2019-10-15T19:02:05.64 0.3 undecidable manual S 151 15.3735 124 -0.29 71
IV.RM33.EHZ. 2019-10-15T19:02:05.05 0.3 undecidable manual P 185 27.0507 50 -0.09 73
IV.NRCA.HHZ. 2019-10-15T19:02:05.34 0.3 undecidable manual S 310 13.9749 127 -0.2 73
IV.LNSS.HHZ. 2019-10-15T19:02:04.53 0.3 undecidable manual P 225 23.4543 50 -0.06 74
IV.MTRA.HNZ. 2019-10-15T19:02:04.94 0.3 undecidable manual S 88 12.3765 130 -0.17 73
IV.MMO1.EHZ. 2019-10-15T19:02:03.59 0.3 undecidable manual P 22 17.6712 121 0 75
IV.NRCA.HHZ. 2019-10-15T19:02:03.07 0.1 undecidable manual P 310 13.9749 127 0.09 99
IV.MC2.EHZ. 2019-10-15T19:02:03.78 0.3 undecidable manual P 346 18.2706 120 0.08 74
IV.T1299.HNZ. 2019-10-15T19:02:03.14 0.3 undecidable manual P 167 13.3755 128 0.25 72
IV.SMA1.EHZ. 2019-10-15T19:02:03.26 0.1 undecidable manual P 151 15.3735 124 0.05 100
IV.MTRA.HNZ. 2019-10-15T19:02:02.79 0.1 undecidable manual P 88 12.3765 130 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.HNE. ML:1.4 0.00027058191 0.192 AML other m 2019-10-15T19:02:05.29
IV.MTRA.EHE. ML:1.4 0.00029107285 0.1792 AML other m 2019-10-15T19:02:05.29
IV.MTRA.HNN. ML:1.5 0.00031687505 0.2304 AML other m 2019-10-15T19:02:05.59
IV.MTRA.EHN. ML:1.4 0.00030019935 0.2304 AML other m 2019-10-15T19:02:05.59
IV.SMA1.EHE. ML:0.8 0.00006011479 0.1408 AML other m 2019-10-15T19:02:05.97
IV.SMA1.EHN. ML:0.8 0.00006729635 0.1024 AML other m 2019-10-15T19:02:06.50
IV.LNSS.HHN. ML:1.0 0.00007093493 0.2048 AML other m 2019-10-15T19:02:08.41
IV.LNSS.HHE. ML:1.0 0.00006906345999999999 0.1664 AML other m 2019-10-15T19:02:09.00
IV.RM33.EHN. ML:1.0 0.00005479731 0.32 AML other m 2019-10-15T19:02:09.43
IV.RM33.EHE. ML:1.0 0.00004984317 0.128 AML other m 2019-10-15T19:02:10.14
IV.FDMO.HHN. ML:0.9 0.00002905435 0.3072 AML other m 2019-10-15T19:02:11.27
IV.FDMO.HHE. ML:0.6 0.000017197471 1.872 AML other m 2019-10-15T19:02:12.98
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