Earthquake with magnitude of ML 1.7 on date 25-09-2018 and time 10:34:05 (Italy) in region 3 km NW Massa Martana (PG)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Massa Martana (PG), on

  • 25-09-2018 08:34:05 (UTC)
  • 25-09-2018 10:34:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 12.5 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Massa Martana PG 3 3770 3770
Todi PG 8 16851 20621
Giano dell'Umbria PG 8 3846 24467
Collazzone PG 12 3473 27940
Acquasparta TR 12 4778 32718
Fratta Todina PG 13 1839 34557
Monte Castello di Vibio PG 13 1567 36124
Gualdo Cattaneo PG 14 6155 42279
Castel Ritaldi PG 15 3278 45557
Montecastrilli TR 16 5022 50579
Avigliano Umbro TR 17 2558 53137
Montefalco PG 17 5679 58816
Bevagna PG 18 5081 63897
Marsciano PG 18 18902 82799

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km SW of Foligno (57155 inhabitants)
29 Km NW of Terni (111501 inhabitants)
36 Km S of Perugia (166134 inhabitants)
53 Km NE of Viterbo (67173 inhabitants)
89 Km NW of L'Aquila (69753 inhabitants)
90 Km SE of Arezzo (99543 inhabitants)
91 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km NE of Civitavecchia (52991 inhabitants)
100 Km W of Teramo (54892 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 1.7 2018-09-25
08:34:05
42.8 12.5 8 2019-06-04
09:16:12
Bollettino Sismico Italiano INGV 67276971
Rev 100 ML 1.7 2018-09-25
08:34:05
42.81 12.49 10 2018-09-25
08:42:13
Sala Sismica INGV-Roma 61293221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-25 08:34:05 ± 0.07
Latitude 42.80 ± 0.00
Longitude 12.50 ± 0.00
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 67276971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 407
Semi-minor axis of confidence ellipse (meter) 345
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 182
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
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 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.69158
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 67276971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-04-05 14:02:10

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 61293221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-25 08:42:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2018-09-25T08:34:29.30 0.6 undecidable manual S 39 0.6916 50 0.2 44
IV.FDMO.HHZ. 2018-09-25T08:34:23.10 0.6 undecidable manual S 61 0.4937 50 -0.14 46
IV.SACS.HHZ. 2018-09-25T08:34:21.90 0.3 undecidable manual S 277 0.4344 50 0.42 66
IV.FEMA.HNZ. 2018-09-25T08:34:21.80 0.3 undecidable manual S 68 0.4371 50 0.24 69
IV.CESI.HHZ. 2018-09-25T08:34:19.00 0.3 undecidable manual S 55 0.3633 50 -0.38 68
IV.EL6.EHZ. 2018-09-25T08:34:18.84 0.6 undecidable manual P 39 0.6916 50 -0.28 43
IV.MTRA.EHZ. 2018-09-25T08:34:18.64 0.6 undecidable manual P 93 0.661 50 0.05 45
IV.MGAB.HHZ. 2018-09-25T08:34:17.40 0.3 undecidable manual S 292 0.3049 103 -0.15 72
IV.ATMI.HHZ. 2018-09-25T08:34:17.28 0.3 undecidable manual P 343 0.563 50 0.37 65
IV.CSP1.EHZ. 2018-09-25T08:34:17.54 0.6 undecidable manual P 60 0.5954 50 0.06 46
IV.ARRO.EHZ. 2018-09-25T08:34:17.60 0.6 undecidable manual S 138 0.2932 104 0.49 45
IV.SNTG.HHE. 2018-09-25T08:34:17.33 0.6 undecidable manual P 35 0.5603 50 0.45 43
IV.LATE.HHN. 2018-09-25T08:34:16.02 0.6 undecidable manual P 250 0.5414 50 -0.53 42
IV.ASSB.HHZ. 2018-09-25T08:34:16.00 0.3 undecidable manual S 26 0.2725 105 -0.33 70
IV.MURB.HHE. 2018-09-25T08:34:15.76 0.6 undecidable manual P 2 0.4667 50 0.49 43
IV.FDMO.HHZ. 2018-09-25T08:34:15.56 0.1 negative manual P 61 0.4937 50 -0.17 92
IV.FEMA.HNZ. 2018-09-25T08:34:14.75 0.3 undecidable manual P 68 0.4371 50 -0.01 72
IV.SACS.HHZ. 2018-09-25T08:34:14.71 0.3 undecidable manual P 277 0.4344 50 -0.01 72
IV.ATTE.HHN. 2018-09-25T08:34:14.43 0.6 undecidable manual P 345 0.4146 50 0.05 48
IV.CESI.HHZ. 2018-09-25T08:34:13.33 0.1 negative manual P 55 0.3633 50 -0.18 94
IV.CESX.HHE. 2018-09-25T08:34:13.40 0.3 undecidable manual S 161 0.1996 110 -0.23 72
IV.MGAB.HHZ. 2018-09-25T08:34:12.29 0.1 undecidable manual P 292 0.3049 103 -0.16 96
IV.ARRO.EHZ. 2018-09-25T08:34:11.69 0.6 undecidable manual P 138 0.2932 104 -0.5 44
IV.ASSB.HHZ. 2018-09-25T08:34:11.65 0.3 undecidable manual P 26 0.2725 105 -0.09 73
IV.CESX.HHE. 2018-09-25T08:34:10.16 0.3 undecidable manual P 161 0.1996 110 -0.03 75
IV.MOMA.HHZ. 2018-09-25T08:34:09.10 0.1 undecidable manual S 82 0.054 143 0.17 100
IV.MOMA.HHZ. 2018-09-25T08:34:07.82 0.1 positive manual P 82 0.054 143 0.35 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOMA.HHN. ML:0 0.001845 0.2 AML other m 2018-09-25T08:34:09.25
IV.MOMA.HNN. ML:0 0.001695 0.22 AML other m 2018-09-25T08:34:09.25
IV.MOMA.HNE. ML:0 0.001605 0.42 AML other m 2018-09-25T08:34:09.88
IV.MOMA.HHE. ML:0 0.00171 0.44 AML other m 2018-09-25T08:34:09.88
IV.ASSB.HHE. ML:0 0.000184 0.38 AML other m 2018-09-25T08:34:16.56
IV.ASSB.HHN. ML:0 0.00016054875 0.6656 AML other m 2018-09-25T08:34:16.40
IV.MGAB.HHN. ML:0 0.0003985 0.2 AML other m 2018-09-25T08:34:18.83
IV.MGAB.HHE. ML:0 0.000296 1.7 AML other m 2018-09-25T08:34:18.94
OB.GAVE.EHN. ML:0 0.000199 1.48 AML other m 2018-09-25T08:34:19.16
IV.CESI.HHN. ML:0 0.0001535 0.26 AML other m 2018-09-25T08:34:19.71
OB.GAVE.EHE. ML:0 0.000341 0.84 AML other m 2018-09-25T08:34:19.35
IV.CESI.HHE. ML:0 0.0001324 0.98 AML other m 2018-09-25T08:34:20.04
IV.FDMO.HHE. ML:0 8.555E-5 0.42 AML other m 2018-09-25T08:34:22.69
IV.FDMO.HHN. ML:0 0.00011085 1.14 AML other m 2018-09-25T08:34:24.39
IV.ATMI.HHN. ML:0 0.000171 1.1 AML other m 2018-09-25T08:34:27.87
IV.ATMI.HHE. ML:0 0.0001905 0.3 AML other m 2018-09-25T08:34:30.07
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