Earthquake with magnitude of ML 1.1 on date 27-04-2020 and time 02:03:15 (UTC) in region 5 km E Cittareale (RI)

A magnitude ML 1.1 earthquake occured in region: 5 km E Cittareale (RI), on

  • 27-04-2020 02:03:15 (UTC)
  • 27-04-2020 04:03:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.64, 13.22 at 10 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
Cittareale RI 5 482 482
Amatrice RI 6 2657 3139
Accumoli RI 7 667 3806
Montereale AQ 13 2581 6387
Capitignano AQ 14 665 7052
Campotosto AQ 15 542 7594
Borbona RI 15 617 8211
Posta RI 16 694 8905
Arquata del Tronto AP 17 1178 10083
Cascia PG 19 3217 13300
Cagnano Amiterno AQ 20 1369 14669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
40 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
84 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
94 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
Reviewed
Rev100
ML 1.1 2020-04-27
02:03:15
42.64 13.22 10 2020-04-27
02:13:45
Sala Sismica INGV-Roma 78614041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-27 02:03:15 ± 0.1
Latitude 42.64 ± 0.01
Longitude 13.22 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78614041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 605
Semi-minor axis of confidence ellipse (meter) 570
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 212
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 89
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.43527
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 78614041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-27 02:13:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-04-27T02:03:53.84 3.0 undecidable manual S -0.09 0
IV.CESI.HHZ. 2020-04-27T02:03:32.04 0.6 undecidable manual S 328 0.4353 50 0.52 43
IV.MF5.EHZ. 2020-04-27T02:03:31.05 0.3 undecidable manual S 27 0.3939 50 0.77 58
IV.TERO.HHZ. 2020-04-27T02:03:26.52 0.3 undecidable manual S 92 0.2833 50 -0.49 66
IV.MF5.EHZ. 2020-04-27T02:03:24.18 0.3 undecidable manual P 27 0.3939 50 -0.02 72
IV.NRCA.HHZ. 2020-04-27T02:03:24.32 0.1 undecidable manual S 339 0.2122 113 -0.42 91
IV.CESI.HHZ. 2020-04-27T02:03:24.57 0.6 undecidable manual P 328 0.4353 50 -0.34 44
IV.LNSS.HNN. 2020-04-27T02:03:22.35 0.3 undecidable manual S 256 0.1358 123 0.23 72
IV.TERO.HHZ. 2020-04-27T02:03:21.70 1.0 undecidable manual P 92 0.2833 50 -0.61 21
IV.RM33.HNE. 2020-04-27T02:03:21.77 0.1 undecidable manual S 182 0.1268 125 -0.06 100
IV.SMA1.EHZ. 2020-04-27T02:03:20.84 0.6 undecidable manual S 93 0.0854 136 0.23 49
IV.NRCA.HHZ. 2020-04-27T02:03:20.78 0.1 undecidable manual P 339 0.2122 113 -0.22 95
IV.RM33.HNE. 2020-04-27T02:03:19.26 0.1 undecidable manual P 182 0.1268 125 -0.06 100
IV.T1299.EHE. 2020-04-27T02:03:19.78 0.3 undecidable manual S 92 0.0459 152 0.06 76
IV.LNSS.HNN. 2020-04-27T02:03:19.55 0.3 undecidable manual P 256 0.1358 123 0.06 75
IV.T1299.EHE. 2020-04-27T02:03:18.27 0.1 undecidable manual P 92 0.0459 152 0.17 99
IV.SMA1.EHZ. 2020-04-27T02:03:18.79 0.3 negative manual P 93 0.0854 136 0.17 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHE. ML:1.1 0.00018317755 0.32 AML other m 2020-04-27T02:03:21.03
IV.SMA1.EHN. ML:1.3 0.00028422875 0.24 AML other m 2020-04-27T02:03:21.16
IV.NRCA.HNE. ML:1.4 0.00017362075 0.1408 AML other m 2020-04-27T02:03:24.52
IV.NRCA.HHE. ML:1.4 0.00016155755 0.1408 AML other m 2020-04-27T02:03:24.51
IV.NRCA.HHN. ML:1.1 8.216986E-5 0.0992 AML other m 2020-04-27T02:03:24.51
IV.TERO.HHE. ML:0.3 7.72198E-6 0.0592 AML other m 2020-04-27T02:03:26.87
IV.TERO.HHN. ML:0.3 1.22328E-5 0.08 AML other m 2020-04-27T02:03:26.80
IV.TERO.HNE. ML:1.4 0.000105100475 0.5392 AML other m 2020-04-27T02:03:30.76
IV.MF5.EHE. ML:1 3.0175241E-5 1.1008 AML other m 2020-04-27T02:03:34.19
IV.MF5.EHN. ML:0.8 2.0707613E-5 1.4608 AML other m 2020-04-27T02:03:43.36
IV.CESI.HHE. ML:0.3 4.5223175E-6 0.1984 AML other m 2020-04-27T02:03:34.13
IV.CESI.HHN. ML:0.6 7.865946E-6 0.2592 AML other m 2020-04-27T02:03:34.26
IV.CESI.HNE. ML:1.7 0.00013784489 0.8496 AML other m 2020-04-27T02:03:35.31
IV.CESI.HNN. ML:1.8 0.000173220145 12.6992 AML other m 2020-04-27T02:03:47.00
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