ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.6 on date 25-03-2019 and time 14:02:36 (UTC) in region 5 km NW Accumoli (RI)

A magnitude ML 1.6 earthquake occured in region: 5 km NW Accumoli (RI), on

  • 25-03-2019 14:02:36 (UTC)
  • 25-03-2019 15:02:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.21 at 9 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
Accumoli RI 5 667 667
Arquata del Tronto AP 9 1178 1845
Norcia PG 12 4957 6802
Amatrice RI 13 2657 9459
Cittareale RI 13 482 9941
Montegallo AP 16 523 10464
Cascia PG 16 3217 13681
Acquasanta Terme AP 17 2916 16597
Castelsantangelo sul Nera MC 19 281 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Teramo (54892 inhabitants)
45 Km NW of L'Aquila (69753 inhabitants)
48 Km SE of Foligno (57155 inhabitants)
50 Km E of Terni (111501 inhabitants)
79 Km SE of Perugia (166134 inhabitants)
81 Km W of Montesilvano (53738 inhabitants)
88 Km W of Pescara (121014 inhabitants)
89 Km W of Chieti (51815 inhabitants)
91 Km NE of Guidonia Montecelio (88673 inhabitants)
92 Km NE of Tivoli (56533 inhabitants)
97 Km E of Viterbo (67173 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 1.6 2019-03-25
14:02:36
42.73 13.21 9 2019-03-25
14:11:33
Sala Sismica INGV-Roma 66910621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-25 14:02:36 ± 0.12
Latitude 42.73 ± 0.00
Longitude 13.21 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66910621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 652
Semi-minor axis of confidence ellipse (meter) 298
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 650
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.38761
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 66910621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-25 14:11:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.PDG.HHZ. 2019-03-25T14:03:52.74 3.0 undecidable manual Pn 9.01 0
IV.VCRE.HHZ. 2019-03-25T14:03:48.26 3.0 undecidable manual Sn -0.2 0
SL.KOGS.BHZ. 2019-03-25T14:03:45.57 3.0 undecidable manual Pg 16.51 0
IV.SCIAR.HHZ. 2019-03-25T14:03:36.51 3.0 negative manual Pg 3.78 0
IV.PAOL.HHZ. 2019-03-25T14:03:34.65 3.0 undecidable manual Sn -9.99 0
OX.CGRP.HHZ. 2019-03-25T14:03:34.85 3.0 undecidable manual Sn -1.59 0
IT.VNF1.HGZ. 2019-03-25T14:03:33.82 3.0 undecidable manual Sn 0.49 0
IV.LIK.EHZ.01 2019-03-25T14:03:32.74 3.0 undecidable manual Sg 7.16 0
IV.EUCT.HNZ. 2019-03-25T14:03:29.21 3.0 undecidable manual Sg 5.12 0
IV.NDIM.HHZ. 2019-03-25T14:03:19.63 3.0 undecidable manual Sg 9.83 0
IV.MTGR.HHZ. 2019-03-25T14:03:17.89 3.0 positive manual Pn -9.99 0
IV.COLB.HHZ. 2019-03-25T14:03:14.79 3.0 undecidable manual Pg 12.07 0
IV.CIMA.HNZ. 2019-03-25T14:03:14.86 3.0 undecidable manual Sn -1.38 0
GU.GRAM.HHZ. 2019-03-25T14:03:08.19 3.0 undecidable manual Sg 6.42 0
IV.FAGN.HHZ. 2019-03-25T14:03:07.10 3.0 undecidable manual Sn -9.99 0
IT.VNF1.HGZ. 2019-03-25T14:03:06.36 3.0 positive manual Pg 9.88 0
IV.CAFE.HHZ. 2019-03-25T14:03:04.73 3.0 undecidable manual Pn -5.47 0
CH.FUORN.HHZ. 2019-03-25T14:03:00.85 3.0 undecidable manual Pn -6.32 0
IV.PE3.EHZ. 2019-03-25T14:02:59.57 3.0 undecidable manual Sg 0.42 0
IV.VITU.HHZ. 2019-03-25T14:02:56.43 3.0 positive manual Pn -7.3 0
IV.AGLI.HHZ. 2019-03-25T14:02:56.59 3.0 undecidable manual Sn -9.99 0
IV.APEC.HHZ. 2019-03-25T14:02:55.38 3.0 undecidable manual Sg -1.05 0
IV.GIGS.HHZ. 2019-03-25T14:02:50.33 0.3 undecidable manual S 136 0.3876 50 -0.15 70
IV.TERO.HHZ. 2019-03-25T14:02:48.20 0.1 undecidable manual S 111 0.3103 50 0 95
IV.MBAL.EHZ. 2019-03-25T14:02:48.41 3.0 negative manual Pn -5.93 0
IV.GUMA.HHZ. 2019-03-25T14:02:47.90 3.0 undecidable manual Pg 4.67 0
IV.GIUL.HHZ. 2019-03-25T14:02:45.37 3.0 positive manual Pn -3.75 0
IV.RM33.EHZ. 2019-03-25T14:02:45.46 0.1 undecidable manual S 179 0.2239 110 0.2 70
IV.GIGS.HHZ. 2019-03-25T14:02:44.63 1.0 undecidable manual P 136 0.3876 50 0.23 23
IV.MMO1.EHZ. 2019-03-25T14:02:44.00 0.1 undecidable manual S 27 0.1871 113 0.06 97
IV.TERO.HHZ. 2019-03-25T14:02:43.13 0.3 negative manual P 111 0.3103 50 0.05 70
IV.MC2.EHZ. 2019-03-25T14:02:43.84 0.1 undecidable manual S 355 0.179 114 0.2 100
IV.FDMO.HHZ. 2019-03-25T14:02:42.92 3.0 negative manual Pg 2.19 0
IV.NRCA.HHZ. 2019-03-25T14:02:41.17 0.1 undecidable manual S 325 0.1223 124 -0.55 90
IV.NDIM.HNZ. 2019-03-25T14:02:41.72 3.0 positive manual Pn -1.54 0
IV.RM33.EHZ. 2019-03-25T14:02:41.74 1.0 positive manual P 179 0.2239 110 0.35 19
IV.MMUR.HNZ. 2019-03-25T14:02:41.43 3.0 negative manual P 0.79 0
IV.MMO1.EHZ. 2019-03-25T14:02:40.74 0.1 positive manual P 27 0.1871 113 0.12 98
IV.AGLI.HHZ. 2019-03-25T14:02:40.05 3.0 negative manual Pn -6.57 0
IV.MC2.EHZ. 2019-03-25T14:02:40.63 1.0 positive manual P 355 0.179 114 0.18 24
IV.NRCA.HHZ. 2019-03-25T14:02:39.31 0.1 negative manual P 325 0.1223 124 -0.03 100
IV.ARVD.HHZ. 2019-03-25T14:02:34.68 3.0 positive manual Pn -5.64 0
IV.RIBO.EHZ.01 2019-03-25T14:02:15.14 3.0 negative manual P 0.53 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.9 0.0009405 0.08 AML other m 2019-03-25T14:02:41.29
IV.NRCA.HHE. ML:1.9 0.000949 0.16 AML other m 2019-03-25T14:02:41.33
IV.TERO.HHN. ML:0.8 2.64E-5 0.66 AML other m 2019-03-25T14:02:48.55
IV.TERO.HHE. ML:0.9 2.915E-5 1.24 AML other m 2019-03-25T14:02:48.26
IV.GUMA.HHN. ML:1.3 7.59E-5 0.42 AML other m 2019-03-25T14:02:54.38
IV.FAGN.HHE. ML:1.8 0.0001425 0.1 AML other m 2019-03-25T14:03:08.39
IV.FAGN.HHN. ML:1.7 0.00010885 0.42 AML other m 2019-03-25T14:03:08.77
IV.GUMA.HHE. ML:1.4 0.00010435 0.38 AML other m 2019-03-25T14:03:16.73
IV.MTGR.HHN. ML:5.6 0.00828 1.08 AML other m 2019-03-25T14:05:05.61
IV.MTGR.HHE. ML:5.5 0.006635 0.92 AML other m 2019-03-25T14:05:10.00
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