Earthquake with magnitude of ML 0.8 on date 25-09-2021 and time 03:50:59 (Italy) in region 1 km NW Matelica (MC)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Matelica (MC), on

  • 25-09-2021 01:50:59 (UTC)
  • 25-09-2021 03:50:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.265, 13.004 at 16 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
Matelica MC 1 9981 9981
Esanatoglia MC 5 2034 12015
Gagliole MC 6 620 12635
Cerreto d'Esi AN 6 3817 16452
Castelraimondo MC 8 4587 21039
Pioraco MC 10 1134 22173
Fiuminata MC 10 1402 23575
Fabriano AN 11 31480 55055
Poggio San Vicino MC 14 246 55301
Sefro MC 14 422 55723
San Severino Marche MC 15 12726 68449
Camerino MC 15 6974 75423
Apiro MC 18 2280 77703
Serrapetrona MC 18 966 78669
Gualdo Tadino PG 18 15208 93877
Genga AN 19 1797 95674
Fossato di Vico PG 20 2840 98514

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km NE of Foligno (57155 inhabitants)
53 Km E of Perugia (166134 inhabitants)
57 Km SW of Ancona (100861 inhabitants)
64 Km S of Fano (60888 inhabitants)
72 Km S of Pesaro (94582 inhabitants)
83 Km NE of Terni (111501 inhabitants)
88 Km NW of Teramo (54892 inhabitants)
93 Km E of Arezzo (99543 inhabitants)
95 Km SE of Rimini (147750 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 0.8 2021-09-25
01:50:59
43.2652 13.0038 16 2021-09-25
01:56:37
Sala Sismica INGV-Roma 95850881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-25 01:50:59 ± 0.05
Latitude 43.2652 ± 0.0018
Longitude 13.0038 ± 0.0037
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95850881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 247
Semi-minor axis of confidence ellipse (meter) 224
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
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) 0.04676
Epicentral distance of station farthest from the epicenter (degree) 0.46225
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 95850881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-25 01:56:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHZ. 2021-09-25T01:51:15.20 0.6 undecidable manual S 169 0.4389 98 0.14 45
IV.NARO.HHZ. 2021-09-25T01:51:15.99 0.6 undecidable manual S 319 0.4623 97 0.24 45
IV.MURB.HHZ. 2021-09-25T01:51:12.80 0.6 undecidable manual S 270 0.3489 101 0.37 44
IV.FRON.EHZ. 2021-09-25T01:51:11.56 0.6 undecidable manual S 321 0.3238 102 -0.13 47
IV.CESI.HHZ. 2021-09-25T01:51:10.24 0.6 undecidable manual S 196 0.2698 106 0.09 48
IV.ATCC.EHZ. 2021-09-25T01:51:10.45 0.6 undecidable manual S 253 0.277 105 0.1 48
IV.ARVD.HHZ. 2021-09-25T01:51:09.02 0.6 undecidable manual S 349 0.2374 109 -0.21 47
IV.FDMO.HHZ. 2021-09-25T01:51:09.12 0.6 undecidable manual S 165 0.2365 109 -0.09 48
IV.CSP1.EHZ. 2021-09-25T01:51:09.07 0.6 undecidable manual S 140 0.2266 110 0.13 47
IV.NRCA.HHZ. 2021-09-25T01:51:08.52 0.3 undecidable manual P 169 0.4389 98 0.03 70
IV.NARO.HHZ. 2021-09-25T01:51:08.72 0.6 negative manual P 319 0.4623 97 -0.17 45
IV.CING.HHZ. 2021-09-25T01:51:07.72 0.6 undecidable manual S 52 0.1781 118 0.11 48
IV.MML1.EHZ. 2021-09-25T01:51:06.96 0.6 undecidable manual S 189 0.1529 123 -0.03 49
IV.FRON.EHZ. 2021-09-25T01:51:06.36 1.0 undecidable manual P 321 0.3238 102 -0.18 23
IV.MURB.HHZ. 2021-09-25T01:51:06.99 0.6 negative manual P 270 0.3489 101 0.02 48
IV.ARVD.HHZ. 2021-09-25T01:51:05.13 0.6 positive manual P 349 0.2374 109 0.01 49
IV.CESI.HHZ. 2021-09-25T01:51:05.49 0.1 positive manual P 196 0.2698 106 -0.17 94
IV.EL6.EHZ. 2021-09-25T01:51:05.83 0.6 undecidable manual S 48 0.0962 140 0.12 49
IV.ATCC.EHZ. 2021-09-25T01:51:05.66 1.0 positive manual P 253 0.277 105 -0.11 24
IV.CSP1.EHZ. 2021-09-25T01:51:04.96 0.6 positive manual P 140 0.2266 110 0.01 49
IV.SNTG.HHZ. 2021-09-25T01:51:04.86 0.6 undecidable manual S 258 0.0468 159 -0.1 49
IV.CING.HHZ. 2021-09-25T01:51:04.44 1.0 negative manual P 52 0.1781 118 0.25 23
IV.FDMO.HHZ. 2021-09-25T01:51:04.90 0.6 positive manual P 165 0.2365 109 -0.21 47
IV.EL6.EHZ. 2021-09-25T01:51:03.19 0.6 negative manual P 48 0.0962 140 0.1 49
IV.MML1.EHZ. 2021-09-25T01:51:03.74 0.6 positive manual P 189 0.1529 123 -0.09 49
IV.SNTG.HHZ. 2021-09-25T01:51:02.61 0.1 positive manual P 258 0.0468 159 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:1.1 0.0001185 0.16 AML other m 2021-09-25T01:51:04.99
IV.SNTG.HHE. ML:0.9 7.795E-5 0.08 AML other m 2021-09-25T01:51:05.11
IV.CESI.HHN. ML:0.7 1.925E-5 0.52 AML other m 2021-09-25T01:51:10.76
IV.CESI.HHE. ML:0.8 2.865E-5 0.68 AML other m 2021-09-25T01:51:10.92
IV.FRON.EHN. ML:0.6 1.585E-5 0.26 AML other m 2021-09-25T01:51:14.07
IV.FRON.EHE. ML:0.6 1.48E-5 0.42 AML other m 2021-09-25T01:51:14.82
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