Earthquake with magnitude of ML 1.0 on date 25-05-2020 and time 20:54:13 (UTC) in region 5 km NE Posta (RI)

A magnitude ML 1.0 earthquake occured in region: 5 km NE Posta (RI), on

  • 25-05-2020 20:54:13 (UTC)
  • 25-05-2020 22:54:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.57, 13.12 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
Posta RI 5 694 694
Borbona RI 6 617 1311
Cittareale RI 7 482 1793
Montereale AQ 11 2581 4374
Leonessa RI 13 2435 6809
Micigliano RI 14 127 6936
Cagnano Amiterno AQ 15 1369 8305
Amatrice RI 15 2657 10962
Capitignano AQ 15 665 11627
Monteleone di Spoleto PG 17 599 12226
Antrodoco RI 17 2588 14814
Accumoli RI 18 667 15481
Barete AQ 18 737 16218
Borgo Velino RI 19 972 17190
Cascia PG 19 3217 20407

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
39 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
71 Km NE of Guidonia Montecelio (88673 inhabitants)
72 Km NE of Tivoli (56533 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
85 Km SE of Perugia (166134 inhabitants)
85 Km E of Viterbo (67173 inhabitants)
89 Km W of Chieti (51815 inhabitants)
90 Km W of Pescara (121014 inhabitants)
92 Km NE of Roma (2864731 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 1.0 2020-05-25
20:54:13
42.57 13.12 13 2020-05-25
21:04:13
Sala Sismica INGV-Roma 79562871
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-25 20:54:13 ± 0.09
Latitude 42.57 ± 0.01
Longitude 13.12 ± 0.00
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79562871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 549
Semi-minor axis of confidence ellipse (meter) 498
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 7
Circular confidence region, given by single value of horizontal uncertainty (meter) 550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.07105
Epicentral distance of station farthest from the epicenter (degree) 0.35703
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 79562871
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-25 21:04:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-05-25T20:54:26.66 0.6 undecidable manual S 81 0.357 93 -0.25 46
IV.ARRO.EHZ. 2020-05-25T20:54:24.04 0.3 undecidable manual S 273 0.2644 95 -0.11 71
IV.MTRA.EHZ. 2020-05-25T20:54:24.27 0.6 undecidable manual S 46 0.2761 95 -0.22 46
IV.SMA1.EHZ. 2020-05-25T20:54:21.49 0.6 undecidable manual S 68 0.1682 103 0.17 48
IV.TERO.HHZ. 2020-05-25T20:54:21.33 1.0 positive manual P 81 0.357 93 -0.06 24
IV.ARRO.EHZ. 2020-05-25T20:54:19.93 0.6 undecidable manual P 273 0.2644 95 0.13 48
IV.RM33.EHZ. 2020-05-25T20:54:19.05 0.3 undecidable manual S 131 0.0881 130 -0.15 74
IV.MTRA.EHZ. 2020-05-25T20:54:19.96 0.6 undecidable manual P 46 0.2761 95 -0.03 48
IV.SMA1.EHZ. 2020-05-25T20:54:18.45 0.3 positive manual P 68 0.1682 103 0.29 70
IV.LNSS.HHZ. 2020-05-25T20:54:18.59 0.6 undecidable manual S 300 0.071 138 -0.24 47
IV.RM33.EHZ. 2020-05-25T20:54:17.14 0.6 positive manual P 131 0.0881 130 0.2 48
IV.LNSS.HHZ. 2020-05-25T20:54:16.83 0.1 undecidable manual P 300 0.071 138 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:0.9 0.0001025 0.78 AML other m 2020-05-25T20:54:18.42
IV.LNSS.HHE. ML:1 0.0001162 0.12 AML other m 2020-05-25T20:54:18.88
IV.RM33.EHN. ML:0.6 4.94E-5 0.46 AML other m 2020-05-25T20:54:19.35
IV.RM33.EHE. ML:0.8 6.675E-5 0.24 AML other m 2020-05-25T20:54:19.32
IV.CERT.HHN. ML:1.6 6.02E-5 0.3 AML other m 2020-05-25T20:54:37.39
IV.CERT.HHE. ML:1.7 8.425E-5 0.7 AML other m 2020-05-25T20:54:37.69
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