Earthquake with magnitude of ML 1.1 on date 22-05-2019 and time 11:54:09 (Italy) in region 4 km NW Posta (RI)

A magnitude ML 1.1 earthquake occured in region: 4 km NW Posta (RI), on

  • 22-05-2019 09:54:09 (UTC)
  • 22-05-2019 11:54:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.56, 13.08 at 14 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
Posta RI 4 694 694
Borbona RI 7 617 1311
Leonessa RI 9 2435 3746
Cittareale RI 10 482 4228
Micigliano RI 12 127 4355
Monteleone di Spoleto PG 14 599 4954
Montereale AQ 15 2581 7535
Antrodoco RI 16 2588 10123
Cagnano Amiterno AQ 17 1369 11492
Poggio Bustone RI 17 2055 13547
Borgo Velino RI 17 972 14519
Cantalice RI 17 2755 17274
Cascia PG 18 3217 20491
Castel Sant'Angelo RI 19 1308 21799
Rivodutri RI 19 1253 23052
Polino TR 19 233 23285
Capitignano AQ 19 665 23950
Amatrice RI 19 2657 26607

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Terni (111501 inhabitants)
35 Km NW of L'Aquila (69753 inhabitants)
53 Km W of Teramo (54892 inhabitants)
54 Km SE of Foligno (57155 inhabitants)
68 Km NE of Guidonia Montecelio (88673 inhabitants)
70 Km NE of Tivoli (56533 inhabitants)
81 Km E of Viterbo (67173 inhabitants)
83 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
89 Km NE of Roma (2864731 inhabitants)
93 Km W of Chieti (51815 inhabitants)
94 Km W of Pescara (121014 inhabitants)
100 Km N of Velletri (53303 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 2019-05-22
09:54:09
42.56 13.08 15 2019-05-22
10:02:04
Sala Sismica INGV-Roma 68783101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-22 09:54:09 ± 0.08
Latitude 42.56 ± 0.01
Longitude 13.08 ± 0.00
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 68783101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 527
Semi-minor axis of confidence ellipse (meter) 396
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 172
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.3939
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 68783101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-22 10:02:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2019-05-22T09:54:18.50 0.3 undecidable manual S 275 0.2284 105 -0.06 74
IV.TERO.HHZ. 2019-05-22T09:54:17.00 0.6 undecidable manual P 81 0.3939 96 -0.4 44
IV.GAVE.EHZ. 2019-05-22T09:54:17.28 0.6 undecidable manual S 315 0.188 110 -0.12 49
IV.SMA1.EHZ. 2019-05-22T09:54:17.83 0.6 undecidable manual S 70 0.2041 108 -0.03 49
IT.MMP1.HGE. 2019-05-22T09:54:17.10 1.0 undecidable manual P 218 0.393 96 -0.28 23
IV.T1299.HNZ. 2019-05-22T09:54:16.58 1.0 undecidable manual S 64 0.1691 114 -0.32 23
IV.RM33.EHZ. 2019-05-22T09:54:15.36 0.3 undecidable manual S 116 0.1142 128 -0.14 74
IV.NRCA.HHZ. 2019-05-22T09:54:15.37 0.1 positive manual P 6 0.2752 101 -0.01 97
IV.FIAM.HHE. 2019-05-22T09:54:15.77 1.0 undecidable manual P 174 0.2932 100 0.08 24
IV.ARRO.EHZ. 2019-05-22T09:54:14.58 0.3 positive manual P 275 0.2284 105 -0.03 74
IV.LNSS.HHZ. 2019-05-22T09:54:14.26 0.6 undecidable manual S 329 0.0504 154 -0.03 50
IV.SMA1.EHZ. 2019-05-22T09:54:14.41 0.1 positive manual P 70 0.2041 108 0.21 95
IV.GAVE.EHZ. 2019-05-22T09:54:13.98 0.3 negative manual P 315 0.188 110 0.04 74
IV.T1299.HNZ. 2019-05-22T09:54:13.83 0.6 undecidable manual P 64 0.1691 114 0.18 48
IV.LNSS.HHZ. 2019-05-22T09:54:12.27 0.1 undecidable manual P 329 0.0504 154 0.12 100
IV.RM33.EHZ. 2019-05-22T09:54:12.87 0.1 positive manual P 116 0.1142 128 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.4 0.0003135 0.12 AML other m 2019-05-22T09:54:14.58
IV.LNSS.HHN. ML:1.2 0.000198 0.42 AML other m 2019-05-22T09:54:14.69
IV.RM33.EHN. ML:1.1 0.000119 0.26 AML other m 2019-05-22T09:54:15.59
IV.RM33.EHE. ML:1.2 0.000128 0.64 AML other m 2019-05-22T09:54:15.75
IV.GAVE.EHN. ML:1.1 7.56E-5 1.5 AML other m 2019-05-22T09:54:17.03
IV.SMA1.EHN. ML:1 6.075E-5 0.5 AML other m 2019-05-22T09:54:18.46
IV.GAVE.EHE. ML:1 6.495E-5 1.44 AML other m 2019-05-22T09:54:19.05
IV.ARRO.EHE. ML:0.9 4.115E-5 0.2 AML other m 2019-05-22T09:54:19.89
IV.ARRO.EHN. ML:1 4.94E-5 0.82 AML other m 2019-05-22T09:54:20.44
IV.SMA1.EHE. ML:1.3 0.000128 0.4 AML other m 2019-05-22T09:54:20.26
IV.NRCA.HHN. ML:1 4.155E-5 0.18 AML other m 2019-05-22T09:54:20.80
IV.NRCA.HHE. ML:1.1 5.465E-5 1 AML other m 2019-05-22T09:54:21.32
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