ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA

Earthquake with magnitude of ML 1.0 on date 24-03-2019 and time 04:36:51 (Italy) in region 4 km SW Accumoli (RI)

A magnitude ML 1.0 earthquake occured in region: 4 km SW Accumoli (RI), on

  • 24-03-2019 03:36:51 (UTC)
  • 24-03-2019 04:36:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.67, 13.22 at 12 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 4 667 667
Cittareale RI 8 482 1149
Amatrice RI 8 2657 3806
Arquata del Tronto AP 13 1178 4984
Norcia PG 17 4957 9941
Montereale AQ 17 2581 12522
Cascia PG 17 3217 15739
Campotosto AQ 18 542 16281
Capitignano AQ 18 665 16946
Acquasanta Terme AP 19 2916 19862
Borbona RI 19 617 20479
Posta RI 19 694 21173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
52 Km SE of Foligno (57155 inhabitants)
79 Km W of Montesilvano (53738 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
85 Km NE of Guidonia Montecelio (88673 inhabitants)
85 Km W of Pescara (121014 inhabitants)
86 Km W of Chieti (51815 inhabitants)
86 Km NE of Tivoli (56533 inhabitants)
95 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 1.0 2019-03-24
03:36:51
42.67 13.22 12 2019-03-24
03:40:32
Sala Sismica INGV-Roma 66856601
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-24 03:36:51 ± 0.09
Latitude 42.67 ± 0.00
Longitude 13.22 ± 0.01
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66856601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 596
Semi-minor axis of confidence ellipse (meter) 349
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 313
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 164
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34444
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 66856601
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-24 03:40:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2019-03-24T03:36:59.93 3.0 positive manual P 0.37 0
IV.LNSS.HHZ. 2019-03-24T03:36:58.52 0.6 undecidable manual S 241 0.1475 107 -0.07 49
IV.ARRO.EHZ. 2019-03-24T03:36:58.97 0.1 undecidable manual P 254 0.3444 93 -0.05 95
IV.MTRA.EHZ. 2019-03-24T03:36:58.57 0.6 undecidable manual S 58 0.1565 105 -0.27 47
IV.RM33.EHZ. 2019-03-24T03:36:58.91 0.6 undecidable manual S 180 0.1646 103 -0.17 48
IV.GAVE.EHZ. 2019-03-24T03:36:57.23 3.0 positive manual P -0.08 0
IV.TERO.HHZ. 2019-03-24T03:36:57.99 3.0 undecidable manual P -0.04 0
IV.SMA1.EHZ. 2019-03-24T03:36:57.28 0.6 undecidable manual S 116 0.0971 125 0.02 51
IV.MMO1.EHZ. 2019-03-24T03:36:57.46 3.0 undecidable manual Pg 0.03 0
IV.RM33.EHZ. 2019-03-24T03:36:56.03 0.6 positive manual P 180 0.1646 103 0.07 49
IV.SMA1.EHZ. 2019-03-24T03:36:55.13 0.6 positive manual P 116 0.0971 125 0.22 49
IV.LNSS.HHZ. 2019-03-24T03:36:55.76 0.1 positive manual P 241 0.1475 107 0.08 99
IV.MTRA.EHZ. 2019-03-24T03:36:55.87 0.1 positive manual P 58 0.1565 105 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.4 0.0002755 0.26 AML other m 2019-03-24T03:36:57.76
IV.SMA1.EHN. ML:1.2 0.00018 0.24 AML other m 2019-03-24T03:36:58.41
IV.LNSS.HHE. ML:1.1 9.27E-5 0.48 AML other m 2019-03-24T03:36:58.85
IV.LNSS.HHN. ML:1 8.835E-5 0.5 AML other m 2019-03-24T03:36:58.65
IV.MTRA.EHN. ML:1 8.515E-5 0.14 AML other m 2019-03-24T03:36:58.72
IV.RM33.EHN. ML:0.8 4.345E-5 0.86 AML other m 2019-03-24T03:36:59.63
IV.MTRA.EHE. ML:1.1 8.76E-5 1.54 AML other m 2019-03-24T03:36:59.08
IV.RM33.EHE. ML:0.8 4.96E-5 0.34 AML other m 2019-03-24T03:37:00.60
IV.GAVE.EHE. ML:1 5.65E-5 1.38 AML other m 2019-03-24T03:37:01.01
IV.GAVE.EHN. ML:1 5.895E-5 0.96 AML other m 2019-03-24T03:37:02.62
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