ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.2 on date 20-03-2019 and time 09:17:50 (UTC) in region 1 km E Comunanza (AP)

A magnitude ML 1.2 earthquake occured in region: 1 km E Comunanza (AP), on

  • 20-03-2019 09:17:50 (UTC)
  • 20-03-2019 10:17:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.96, 13.42 at 15 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
Comunanza AP 1 3166 3166
Montefalcone Appennino FM 4 424 3590
Smerillo FM 5 365 3955
Force AP 6 1354 5309
Amandola FM 6 3629 8938
Montefortino FM 7 1178 10116
Palmiano AP 7 196 10312
Monte San Martino MC 8 765 11077
Santa Vittoria in Matenano FM 9 1330 12407
Montemonaco AP 10 604 13011
Venarotta AP 10 2066 15077
Penna San Giovanni MC 11 1108 16185
Rotella AP 11 906 17091
Montelparo FM 11 778 17869
Roccafluvione AP 12 2010 19879
Monteleone di Fermo FM 13 395 20274
Sarnano MC 13 3264 23538
Montedinove AP 13 488 24026
Gualdo MC 14 815 24841
Servigliano FM 15 2336 27177
Montegallo AP 15 523 27700
Monte Rinaldo FM 15 379 28079
Montalto delle Marche AP 15 2122 30201
Sant'Angelo in Pontano MC 16 1436 31637
Monsampietro Morico FM 16 659 32296
Castignano AP 16 2796 35092
Bolognola MC 17 142 35234
Ortezzano FM 17 774 36008
Ascoli Piceno AP 17 49407 85415
Falerone FM 17 3337 88752
Montottone FM 18 979 89731
Belmonte Piceno FM 18 646 90377
Monte Vidon Corrado FM 19 731 91108
San Ginesio MC 19 3498 94606
Monte Vidon Combatte FM 20 433 95039
Montappone FM 20 1682 96721

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NW of Teramo (54892 inhabitants)
59 Km E of Foligno (57155 inhabitants)
68 Km N of L'Aquila (69753 inhabitants)
74 Km S of Ancona (100861 inhabitants)
77 Km NW of Montesilvano (53738 inhabitants)
77 Km NE of Terni (111501 inhabitants)
85 Km NW of Pescara (121014 inhabitants)
86 Km E of Perugia (166134 inhabitants)
91 Km NW of Chieti (51815 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
Rev 100 ML 1.2 2019-03-20
09:17:50
42.96 13.42 15 2019-03-20
09:44:43
Sala Sismica INGV-Roma 66711141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-20 09:17:50 ± 0.09
Latitude 42.96 ± 0.00
Longitude 13.42 ± 0.01
Depth (km) 15 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66711141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 697
Semi-minor axis of confidence ellipse (meter) 193
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.36153
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 66711141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-20 09:44:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.EHZ. 2019-03-20T09:18:04.91 3.0 negative manual P -1.16 0
IV.MURB.HHZ. 2019-03-20T09:18:03.61 3.0 undecidable manual Sg -0.27 0
IV.TERO.HHE. 2019-03-20T09:18:03.90 0.3 undecidable manual S 159 0.3615 98 0.42 67
IV.FDMO.HHZ. 2019-03-20T09:18:00.57 0.3 undecidable manual S 287 0.2581 104 0.09 72
IV.PF6.EHE. 2019-03-20T09:18:00.05 0.6 undecidable manual S 317 0.2455 105 -0.06 49
IV.MC2.EHZ. 2019-03-20T09:17:58.42 0.6 undecidable manual S 255 0.179 114 0.17 47
IV.MTRA.EHZ. 2019-03-20T09:17:58.72 0.6 undecidable manual S 186 0.2032 110 -0.21 48
IV.TERO.HHE. 2019-03-20T09:17:57.94 0.1 undecidable manual P 159 0.3615 98 0.05 96
IV.GUMA.HHE. 2019-03-20T09:17:57.00 0.6 undecidable manual S 328 0.1223 128 0.2 48
IV.FDMO.HHZ. 2019-03-20T09:17:56.05 0.1 undecidable manual P 287 0.2581 104 -0.11 96
IV.NRCA.HHZ. 2019-03-20T09:17:56.22 0.3 undecidable manual P 241 0.2599 104 0.04 73
IV.MC2.EHZ. 2019-03-20T09:17:55.00 0.1 undecidable manual P 255 0.179 114 0.13 97
IV.MTRA.EHZ. 2019-03-20T09:17:55.09 0.1 undecidable manual P 186 0.2032 110 -0.17 95
IV.MMO1.EHZ. 2019-03-20T09:17:55.94 0.6 undecidable manual S 230 0.0935 137 -0.23 49
IV.PF6.EHE. 2019-03-20T09:17:55.75 0.1 undecidable manual P 317 0.2455 105 -0.19 94
IV.GUMA.HHE. 2019-03-20T09:17:54.08 0.1 undecidable manual P 328 0.1223 128 0.05 100
IV.MF5.EHZ. 2019-03-20T09:17:53.15 0.3 positive manual P 42 0.0387 161 -0.03 76
IV.MMO1.EHZ. 2019-03-20T09:17:53.55 0.3 undecidable manual P 230 0.0935 137 -0.12 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.5 0.0001365 0.14 AML other m 2019-03-20T09:18:02.14
IV.MTRA.EHE. ML:1.2 8.3507075E-5 0.6976 AML other m 2019-03-20T09:17:59.08
IV.MTRA.EHN. ML:1 6.058051E-5 0.2816 AML other m 2019-03-20T09:17:59.37
IV.FDMO.HHN. ML:1 4.575928E-5 2.0736 AML other m 2019-03-20T09:18:00.92
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