Earthquake with magnitude of ML 0.9 on date 30-09-2021 and time 05:35:36 (UTC) in region 3 km SW Costacciaro (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km SW Costacciaro (PG), on

  • 30-09-2021 05:35:36 (UTC)
  • 30-09-2021 07:35:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.344, 12.68 at 11 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
Costacciaro PG 3 1216 1216
Sigillo PG 5 2404 3620
Scheggia e Pascelupo PG 7 1393 5013
Gubbio PG 8 32216 37229
Fossato di Vico PG 9 2840 40069
Cantiano PU 15 2245 42314
Gualdo Tadino PG 15 15208 57522
Sassoferrato AN 18 7285 64807
Serra Sant'Abbondio PU 18 1027 65834
Fabriano AN 18 31480 97314
Frontone PU 20 1300 98614

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Perugia (166134 inhabitants)
43 Km N of Foligno (57155 inhabitants)
62 Km SW of Fano (60888 inhabitants)
66 Km S of Pesaro (94582 inhabitants)
66 Km E of Arezzo (99543 inhabitants)
74 Km W of Ancona (100861 inhabitants)
80 Km S of Rimini (147750 inhabitants)
87 Km N of Terni (111501 inhabitants)
95 Km SE of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 0.9 2021-09-30
05:35:36
43.3442 12.6797 11 2021-09-30
05:39:33
Sala Sismica INGV-Roma 96052101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-30 05:35:36 ± 0.06
Latitude 43.3442 ± 0.0045
Longitude 12.6797 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96052101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 539
Semi-minor axis of confidence ellipse (meter) 350
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 176
Circular confidence region, given by single value of horizontal uncertainty (meter) 540
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 119
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.27609
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 96052101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-30 05:39:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NARO.HHZ. 2021-09-30T05:35:47.52 0.6 undecidable manual S 345 0.2761 50 0.17 47
IV.ATPI.EHZ. 2021-09-30T05:35:46.28 0.6 undecidable manual S 298 0.2275 50 0.35 45
IV.PIEI.HHZ. 2021-09-30T05:35:45.55 0.6 undecidable manual S 331 0.2185 50 -0.09 48
IV.FRON.EHZ. 2021-09-30T05:35:44.36 0.6 undecidable manual S 11 0.1772 50 -0.05 49
IV.MURB.HHZ. 2021-09-30T05:35:43.21 0.6 undecidable manual S 234 0.1385 125 0.01 50
IV.NARO.HHZ. 2021-09-30T05:35:42.74 0.1 undecidable manual P 345 0.2761 50 -0.09 95
IV.FRON.EHZ. 2021-09-30T05:35:41.23 0.6 positive manual P 11 0.1772 50 0.09 49
IV.ATFO.HHZ. 2021-09-30T05:35:41.63 0.6 undecidable manual S 286 0.0818 140 0.06 50
IV.PIEI.HHZ. 2021-09-30T05:35:41.69 0.6 undecidable manual P 331 0.2185 50 -0.16 48
IV.ATPI.EHZ. 2021-09-30T05:35:41.93 0.1 undecidable manual P 298 0.2275 50 -0.08 96
IV.FOSV.EHZ. 2021-09-30T05:35:41.51 0.6 undecidable manual S 130 0.0773 142 0.06 50
IV.MURB.HHZ. 2021-09-30T05:35:40.36 0.1 undecidable manual P 234 0.1385 125 -0.08 98
IV.FOSV.EHZ. 2021-09-30T05:35:39.57 0.6 undecidable manual P 130 0.0773 142 0.14 49
IV.ATFO.HHZ. 2021-09-30T05:35:39.46 0.1 undecidable manual P 286 0.0818 140 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHN. ML:0.8 8.45E-5 0.32 AML other m 2021-09-30T05:35:41.88
IV.ATFO.HHE. ML:0.9 0.00010855 0.16 AML other m 2021-09-30T05:35:41.83
IV.MURB.HHE. ML:1 9.61E-5 0.64 AML other m 2021-09-30T05:35:43.43
IV.MURB.HHN. ML:1 8.16E-5 0.88 AML other m 2021-09-30T05:35:43.40
IV.FRON.EHN. ML:0.8 5.145E-5 1.72 AML other m 2021-09-30T05:35:44.89
IV.FRON.EHE. ML:0.6 3.25E-5 1.32 AML other m 2021-09-30T05:35:45.14
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download