Earthquake with magnitude of ML 0.9 on date 25-09-2021 and time 13:38:22 (Italy) in region 4 km E Costacciaro (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km E Costacciaro (PG), on

  • 25-09-2021 11:38:22 (UTC)
  • 25-09-2021 13:38:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.376, 12.76 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 4 1216 1216
Sigillo PG 5 2404 3620
Scheggia e Pascelupo PG 8 1393 5013
Fossato di Vico PG 9 2840 7853
Sassoferrato AN 11 7285 15138
Fabriano AN 13 31480 46618
Serra Sant'Abbondio PU 13 1027 47645
Gubbio PG 15 32216 79861
Cantiano PU 15 2245 82106
Genga AN 16 1797 83903
Frontone PU 16 1300 85203
Gualdo Tadino PG 16 15208 100411
Cerreto d'Esi AN 19 3817 104228

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NE of Perugia (166134 inhabitants)
47 Km N of Foligno (57155 inhabitants)
56 Km SW of Fano (60888 inhabitants)
61 Km S of Pesaro (94582 inhabitants)
67 Km W of Ancona (100861 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
78 Km S of Rimini (147750 inhabitants)
91 Km N of Terni (111501 inhabitants)
94 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 2021-09-25
11:38:22
43.3757 12.7595 11 2021-09-25
11:53:12
Sala Sismica INGV-Roma 95866911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-25 11:38:22 ± 0.06
Latitude 43.3757 ± 0.0027
Longitude 12.7595 ± 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 95866911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 395
Semi-minor axis of confidence ellipse (meter) 212
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.268
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95866911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-25 11:53:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CH.FUORN.HHZ. 2021-09-25T11:40:01.19 3.0 undecidable manual Sn -3.97 0
IV.MRLC.HHZ. 2021-09-25T11:39:56.55 3.0 undecidable manual Sn 0.95 0
IV.JOPP.HHZ. 2021-09-25T11:39:52.65 3.0 undecidable manual Pg 10.05 0
IV.CAGR.HHZ. 2021-09-25T11:39:51.53 3.0 undecidable manual Pn 1 0
IV.ZEN8.EHZ. 2021-09-25T11:39:39.92 3.0 undecidable manual Sn -0.58 0
IV.SGG.HHZ. 2021-09-25T11:39:30.77 3.0 undecidable manual Sn -0.59 0
IV.TST02.HHZ. 2021-09-25T11:39:19.72 3.0 undecidable manual Sn 0.08 0
IV.AGLI.HHZ. 2021-09-25T11:39:16.39 3.0 undecidable manual Pn -1.04 0
IV.LPEL.HHZ. 2021-09-25T11:39:15.85 3.0 undecidable manual Sg -0.14 0
IV.ZEN8.EHZ. 2021-09-25T11:39:08.05 3.0 undecidable manual Pn 1.46 0
OX.CIMO.HHZ. 2021-09-25T11:39:07.28 3.0 positive manual Pn -2.85 0
IV.TERO.HHZ. 2021-09-25T11:38:57.03 3.0 undecidable manual S -0.67 0
IV.VVLD.HHZ. 2021-09-25T11:38:52.54 3.0 positive manual Pg 0.53 0
IV.LAV9.HHZ. 2021-09-25T11:38:50.88 3.0 undecidable manual Pn -1.99 0
IV.TOLF.HHZ. 2021-09-25T11:38:49.82 3.0 undecidable manual P 0.68 0
IV.NARO.HHZ. 2021-09-25T11:38:33.24 0.1 undecidable manual S 331 0.268 50 -0.09 96
IV.MPAG.EHZ. 2021-09-25T11:38:33.06 0.1 undecidable manual S 360 0.2536 50 0.18 95
IV.MURB.HHZ. 2021-09-25T11:38:31.60 0.3 undecidable manual S 237 0.205 50 0.17 72
IV.ATCC.EHZ. 2021-09-25T11:38:31.67 0.1 undecidable manual S 205 0.2095 50 0.1 97
IV.SNTG.HHZ. 2021-09-25T11:38:30.65 0.3 undecidable manual S 132 0.179 50 -0.01 75
IV.FRON.EHZ. 2021-09-25T11:38:29.60 0.1 undecidable manual S 350 0.1439 124 0.07 99
IV.NARO.HHZ. 2021-09-25T11:38:28.61 0.3 undecidable manual P 331 0.268 50 -0.28 69
IV.MPAG.EHZ. 2021-09-25T11:38:28.60 0.3 undecidable manual P 360 0.2536 50 -0.04 73
IV.ATCC.EHZ. 2021-09-25T11:38:27.76 0.1 undecidable manual P 205 0.2095 50 -0.12 97
IV.SNTG.HHZ. 2021-09-25T11:38:27.38 0.1 undecidable manual P 132 0.179 50 0.02 99
IV.MURB.HHZ. 2021-09-25T11:38:27.72 0.3 undecidable manual P 237 0.205 50 -0.08 73
IV.FRON.EHZ. 2021-09-25T11:38:26.73 0.1 undecidable manual P 350 0.1439 124 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FRON.EHE. ML:0.8 4.94E-5 0.16 AML other m 2021-09-25T11:38:29.87
IV.FRON.EHN. ML:0.7 4.175E-5 0.48 AML other m 2021-09-25T11:38:30.11
IV.MURB.HHN. ML:1 6.56E-5 0.3 AML other m 2021-09-25T11:38:31.71
IV.ATCC.EHE. ML:0.9 5.335E-5 0.1 AML other m 2021-09-25T11:38:31.92
IV.ATCC.EHN. ML:0.8 3.67E-5 1.58 AML other m 2021-09-25T11:38:32.80
IV.MURB.HHE. ML:1.1 8.46E-5 0.22 AML other m 2021-09-25T11:38:32.15
IV.VVLD.HHN. ML:1.9 2.905E-5 1.18 AML other m 2021-09-25T11:38:54.24
IV.VVLD.HHE. ML:2.1 4.375E-5 1.48 AML other m 2021-09-25T11:39:07.89
IV.TST02.HHN. ML:2.8 0.0001845 0.08 AML other m 2021-09-25T11:39:20.45
IV.TST02.HHE. ML:2.8 0.000161 0.1 AML other m 2021-09-25T11:39:20.85
IV.LPEL.HHE. ML:1.9 2.47E-5 0.08 AML other m 2021-09-25T11:39:45.88
IV.ZEN8.EHE. ML:2.4 3.58E-5 0.9 AML other m 2021-09-25T11:39:45.98
IV.LPEL.HHN. ML:1.8 2.14E-5 1.36 AML other m 2021-09-25T11:39:48.86
IV.MRLC.HHE. ML:2.7 3.755E-5 0.08 AML other m 2021-09-25T11:39:58.28
IV.MRLC.HHN. ML:2.5 2.455E-5 0.56 AML other m 2021-09-25T11:39:58.48
IV.ZEN8.EHN. ML:2.6 5.25E-5 0.5 AML other m 2021-09-25T11:40:12.43
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