Earthquake with magnitude of ML 1.1 on date 22-07-2019 and time 01:27:39 (UTC) in region 6 km NW Accumoli (RI)

A magnitude ML 1.1 earthquake occured in region: 6 km NW Accumoli (RI), on

  • 22-07-2019 01:27:39 (UTC)
  • 22-07-2019 03:27:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.73, 13.19 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 6 667 667
Arquata del Tronto AP 10 1178 1845
Norcia PG 10 4957 6802
Cittareale RI 13 482 7284
Amatrice RI 14 2657 9941
Cascia PG 14 3217 13158
Montegallo AP 17 523 13681
Castelsantangelo sul Nera MC 19 281 13962
Acquasanta Terme AP 19 2916 16878

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km W of Teramo (54892 inhabitants)
46 Km NW of L'Aquila (69753 inhabitants)
47 Km SE of Foligno (57155 inhabitants)
48 Km E of Terni (111501 inhabitants)
77 Km SE of Perugia (166134 inhabitants)
82 Km W of Montesilvano (53738 inhabitants)
89 Km W of Pescara (121014 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km W of Chieti (51815 inhabitants)
91 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 1.1 2019-07-22
01:27:39
42.73 13.19 9 2019-07-22
01:39:01
Sala Sismica INGV-Roma 70784121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-22 01:27:39 ± 0.07
Latitude 42.73 ± 0.00
Longitude 13.19 ± 0.00
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 70784121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 29
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 298
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.55488
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 70784121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-22 01:39:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2019-07-22T01:27:50.91 0.6 undecidable manual P 341 0.5549 50 0.13 45
IV.ASSB.HHZ. 2019-07-22T01:27:49.47 0.6 negative manual P 309 0.4973 50 -0.33 44
IV.OFFI.HHZ. 2019-07-22T01:27:49.16 1.0 negative manual P 61 0.4182 50 0.71 20
IV.MNTT.EHZ. 2019-07-22T01:27:49.73 3.0 negative manual P 0.66 0
IV.RM33.EHZ. 2019-07-22T01:27:48.44 0.1 undecidable manual S 175 0.2221 109 -0.17 95
IV.GAVE.EHZ. 2019-07-22T01:27:48.50 0.1 undecidable manual S 260 0.2185 110 0 99
IV.MMO1.EHZ. 2019-07-22T01:27:47.58 0.1 undecidable manual S 31 0.1979 111 -0.15 96
IV.GIGS.HHZ. 2019-07-22T01:27:47.80 1.0 undecidable manual P 134 0.3957 50 -0.26 23
IV.MF5.EHZ. 2019-07-22T01:27:47.28 0.6 negative manual P 38 0.3256 50 0.42 44
IV.MC2.EHZ. 2019-07-22T01:27:47.56 0.1 undecidable manual S 0 0.1817 113 0.41 91
IV.FDMO.HHZ. 2019-07-22T01:27:46.34 0.1 undecidable manual P 347 0.3148 50 -0.34 91
IV.MTRA.EHZ. 2019-07-22T01:27:46.14 0.1 undecidable manual S 80 0.1556 117 -0.11 98
IV.LNSS.HHZ. 2019-07-22T01:27:46.78 0.1 undecidable manual S 220 0.1673 115 0.13 97
IV.ARRO.EHZ. 2019-07-22T01:27:46.99 3.0 positive manual P -0.14 0
IV.MC2.EHZ. 2019-07-22T01:27:44.15 0.6 negative manual P 0 0.1817 113 0.21 48
IV.NRCA.HHZ. 2019-07-22T01:27:44.60 0.1 undecidable manual S 332 0.1169 124 -0.35 94
IV.MMO1.EHZ. 2019-07-22T01:27:44.22 0.6 positive manual P 31 0.1979 111 -0.05 49
IV.RM33.EHZ. 2019-07-22T01:27:44.73 0.6 negative manual P 175 0.2221 109 -0.05 49
IV.GAVE.EHZ. 2019-07-22T01:27:44.76 0.3 negative manual P 260 0.2185 110 0.04 74
IV.SMA1.EHZ. 2019-07-22T01:27:43.38 0.6 positive manual P 133 0.1475 118 0.12 49
IV.MTRA.EHZ. 2019-07-22T01:27:43.46 0.1 positive manual P 80 0.1556 117 0.04 99
IV.LNSS.HHZ. 2019-07-22T01:27:43.80 0.1 positive manual P 220 0.1673 115 0.15 97
IV.NRCA.HHZ. 2019-07-22T01:27:42.71 0.1 positive manual P 332 0.1169 124 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.3 0.00022 1.34 AML other m 2019-07-22T01:27:44.14
IV.NRCA.HHE. ML:1.5 0.000365 0.14 AML other m 2019-07-22T01:27:46.07
IV.MTRA.EHE. ML:1.2 0.000144 0.34 AML other m 2019-07-22T01:27:46.70
IV.MTRA.EHN. ML:1.2 0.0001275 1.8 AML other m 2019-07-22T01:27:46.95
IV.LNSS.HHN. ML:1.4 0.00023 1.48 AML other m 2019-07-22T01:27:47.96
IV.LNSS.HHE. ML:1.3 0.0001605 0.48 AML other m 2019-07-22T01:27:48.05
IV.RM33.EHN. ML:0.8 3.445E-5 0.6 AML other m 2019-07-22T01:27:48.32
IV.SMA1.EHN. ML:1.3 0.000185 0.44 AML other m 2019-07-22T01:27:48.85
IV.GAVE.EHN. ML:1.2 9.735E-5 0.1 AML other m 2019-07-22T01:27:48.85
IV.SMA1.EHE. ML:1.3 0.0001705 1.56 AML other m 2019-07-22T01:27:49.99
IV.GAVE.EHE. ML:1.3 0.0001365 1.5 AML other m 2019-07-22T01:27:49.97
IV.RM33.EHE. ML:0.9 4.44E-5 1.04 AML other m 2019-07-22T01:27:50.70
IV.FDMO.HHE. ML:0.8 2.72E-5 0.22 AML other m 2019-07-22T01:27:52.37
IV.ARRO.EHE. ML:0.7 2.03E-5 0.44 AML other m 2019-07-22T01:27:53.18
IV.FDMO.HHN. ML:0.9 3.52E-5 0.14 AML other m 2019-07-22T01:27:53.48
IV.ARRO.EHN. ML:0.8 2.435E-5 1.78 AML other m 2019-07-22T01:27:56.93
IV.ASSB.HHN. ML:0.9 1.925E-5 0.78 AML other m 2019-07-22T01:27:58.99
IV.ASSB.HHE. ML:1.1 3.05E-5 0.22 AML other m 2019-07-22T01:27:59.00
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