Earthquake with magnitude of ML 0.5 on date 25-09-2021 and time 20:56:40 (Italy) in region 2 km S Castelraimondo (MC)

A magnitude ML 0.5 earthquake occured in region: 2 km S Castelraimondo (MC), on

  • 25-09-2021 18:56:40 (UTC)
  • 25-09-2021 20:56:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.19, 13.063 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
Castelraimondo MC 2 4587 4587
Gagliole MC 6 620 5207
Camerino MC 6 6974 12181
Pioraco MC 6 1134 13315
Matelica MC 9 9981 23296
Sefro MC 10 422 23718
San Severino Marche MC 10 12726 36444
Serrapetrona MC 10 966 37410
Fiuminata MC 11 1402 38812
Esanatoglia MC 12 2034 40846
Muccia MC 12 915 41761
Pievebovigliana MC 14 866 42627
Caldarola MC 14 1823 44450
Belforte del Chienti MC 15 1886 46336
Serravalle di Chienti MC 16 1070 47406
Cerreto d'Esi AN 16 3817 51223
Pieve Torina MC 16 1458 52681
Fiordimonte MC 17 202 52883
Camporotondo di Fiastrone MC 18 563 53446
Tolentino MC 18 20069 73515
Cessapalombo MC 18 512 74027
Fiastra MC 19 559 74586
Acquacanina MC 20 121 74707

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km NE of Foligno (57155 inhabitants)
55 Km E of Perugia (166134 inhabitants)
60 Km SW of Ancona (100861 inhabitants)
73 Km S of Fano (60888 inhabitants)
78 Km NE of Terni (111501 inhabitants)
79 Km NW of Teramo (54892 inhabitants)
81 Km S of Pesaro (94582 inhabitants)
97 Km N of L'Aquila (69753 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 0.5 2021-09-25
18:56:40
43.1897 13.0633 11 2021-09-25
19:01:26
Sala Sismica INGV-Roma 95875571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-25 18:56:40 ± 0.03
Latitude 43.1897 ± 0.0018
Longitude 13.0633 ± 0.0037
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 95875571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 292
Semi-minor axis of confidence ellipse (meter) 180
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
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) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.10162
Epicentral distance of station farthest from the epicenter (degree) 0.15378
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:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 95875571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-25 19:01:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-09-25T18:56:47.59 0.3 undecidable manual S 11 0.1421 50 0.08 73
IV.CSP1.EHZ. 2021-09-25T18:56:47.59 0.3 undecidable manual S 133 0.1421 50 0.09 73
IV.FDMO.HHZ. 2021-09-25T18:56:47.72 0.3 undecidable manual S 174 0.1538 50 -0.14 72
IV.MML1.EHZ. 2021-09-25T18:56:46.44 0.3 undecidable manual S 221 0.1016 135 0.12 73
IV.SNTG.HHZ. 2021-09-25T18:56:46.48 0.3 undecidable manual S 306 0.1106 132 -0.1 74
IV.PF6.EHE. 2021-09-25T18:56:46.40 0.6 undecidable manual S 118 0.1088 133 -0.12 49
IV.SNTG.HHZ. 2021-09-25T18:56:44.13 0.1 undecidable manual P 306 0.1106 132 -0.02 100
IV.PF6.EHE. 2021-09-25T18:56:44.12 0.1 undecidable manual P 118 0.1088 133 0 100
IV.EL6.EHZ. 2021-09-25T18:56:44.65 0.1 undecidable manual P 11 0.1421 50 -0.04 99
IV.CSP1.EHZ. 2021-09-25T18:56:44.77 0.6 negative manual P 133 0.1421 50 0.09 49
IV.MML1.EHZ. 2021-09-25T18:56:44.11 0.6 positive manual P 221 0.1016 135 0.11 49
IV.FDMO.HHZ. 2021-09-25T18:56:44.78 0.6 undecidable manual P 174 0.1538 50 -0.11 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:0.5 3.573184E-5 0.1664 AML other m 2021-09-25T18:56:46.60
IV.MML1.EHE. ML:0.4 3.23E-5 0.22 AML other m 2021-09-25T18:56:46.61
IV.MML1.HNE. ML:0.8 7.604169E-5 0.9472 AML other m 2021-09-25T18:56:48.97
IV.MML1.HNN. ML:0.9 9.1449605E-5 0.7936 AML other m 2021-09-25T18:56:43.95
IV.SNTG.HHE. ML:0 8.0516175E-6 0.1664 AML other m 2021-09-25T18:56:46.57
IV.SNTG.HHN. ML:0 8.802333E-6 0.1536 AML other m 2021-09-25T18:56:46.58
IV.SNTG.HNE. ML:1 0.000107723455 0.5888 AML other m 2021-09-25T18:56:52.31
IV.SNTG.HNN. ML:1 0.00011722896 0.704 AML other m 2021-09-25T18:56:45.54
IV.EL6.EHE. ML:0.4 2.28497673E-5 1.344 AML other m 2021-09-25T18:56:54.98
IV.EL6.EHN. ML:0.4 2.1849464E-5 43.84 AML other m 2021-09-25T18:56:22.19
IV.CSP1.EHE. ML:0.4 2.1489915E-5 0.2944 AML other m 2021-09-25T18:56:48.15
IV.CSP1.EHN. ML:0.6 3.4540925E-5 0.256 AML other m 2021-09-25T18:56:49.11
IV.FDMO.HHE. ML:0.3 1.3847885E-5 0.2176 AML other m 2021-09-25T18:56:47.94
IV.FDMO.HHN. ML:-0.2 6.047616E-6 0.2688 AML other m 2021-09-25T18:56:48.85
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