Earthquake with magnitude of ML 0.6 on date 21-09-2021 and time 02:32:17 (Italy) in region 3 km W Caldarola (MC)

A magnitude ML 0.6 earthquake occured in region: 3 km W Caldarola (MC), on

  • 21-09-2021 00:32:17 (UTC)
  • 21-09-2021 02:32:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.134, 13.189 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
Caldarola MC 3 1823 1823
Serrapetrona MC 5 966 2789
Belforte del Chienti MC 5 1886 4675
Cessapalombo MC 6 512 5187
Camporotondo di Fiastrone MC 6 563 5750
Camerino MC 10 6974 12724
San Severino Marche MC 11 12726 25450
San Ginesio MC 11 3498 28948
Fiastra MC 11 559 29507
Acquacanina MC 12 121 29628
Pievebovigliana MC 12 866 30494
Tolentino MC 12 20069 50563
Muccia MC 13 915 51478
Fiordimonte MC 13 202 51680
Castelraimondo MC 14 4587 56267
Colmurano MC 14 1263 57530
Gualdo MC 14 815 58345
Sarnano MC 14 3264 61609
Ripe San Ginesio MC 15 852 62461
Pieve Torina MC 15 1458 63919
Gagliole MC 15 620 64539
Bolognola MC 16 142 64681
Urbisaglia MC 17 2628 67309
Sant'Angelo in Pontano MC 17 1436 68745
Pioraco MC 17 1134 69879
Loro Piceno MC 19 2401 72280
Sefro MC 20 422 72702
Pollenza MC 20 6618 79320
Matelica MC 20 9981 89301

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
60 Km SW of Ancona (100861 inhabitants)
65 Km E of Perugia (166134 inhabitants)
67 Km NW of Teramo (54892 inhabitants)
77 Km NE of Terni (111501 inhabitants)
80 Km S of Fano (60888 inhabitants)
89 Km N of L'Aquila (69753 inhabitants)
89 Km S of Pesaro (94582 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 0.6 2021-09-21
00:32:17
43.1337 13.1893 16 2021-09-21
00:40:13
Sala Sismica INGV-Roma 95679121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 00:32:17 ± 0.07
Latitude 43.1337 ± 0.0018
Longitude 13.1893 ± 0.0037
Depth (km) 16 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95679121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 274
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 265
Circular confidence region, given by single value of horizontal uncertainty (meter) 270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.0054
Epicentral distance of station farthest from the epicenter (degree) 0.25451
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 95679121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 00:40:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CESI.HHZ. 2021-09-21T00:32:28.06 0.3 undecidable manual S 238 0.2446 108 0.14 70
IV.MMO1.EHZ. 2021-09-21T00:32:28.40 0.3 undecidable manual S 157 0.2545 107 0.19 69
IV.CING.HHZ. 2021-09-21T00:32:27.99 0.3 undecidable manual S 1 0.2419 109 0.15 70
IV.EL6.EHZ. 2021-09-21T00:32:26.97 0.3 undecidable manual S 342 0.2059 113 0.12 71
IV.MML1.EHZ. 2021-09-21T00:32:25.66 0.3 undecidable manual S 263 0.1601 122 0.01 73
IV.FDMO.HHZ. 2021-09-21T00:32:24.65 0.3 undecidable manual S 218 0.1223 131 -0.1 73
IV.CING.HHZ. 2021-09-21T00:32:23.54 0.1 undecidable manual P 1 0.2419 109 -0.14 94
IV.CESI.HHZ. 2021-09-21T00:32:23.67 0.1 undecidable manual P 238 0.2446 108 -0.05 95
IV.PF6.EHZ. 2021-09-21T00:32:23.03 0.3 undecidable manual S 41 0.0054 177 -0.17 73
IV.MMO1.EHZ. 2021-09-21T00:32:23.81 0.1 undecidable manual P 157 0.2545 107 -0.08 95
IV.CSP1.EHE. 2021-09-21T00:32:23.53 0.3 undecidable manual S 165 0.0432 160 0.11 73
IV.EL6.EHZ. 2021-09-21T00:32:23.07 0.1 undecidable manual P 342 0.2059 113 -0.03 96
IV.MML1.EHZ. 2021-09-21T00:32:22.39 0.1 undecidable manual P 263 0.1601 122 -0.02 97
IV.CSP1.EHE. 2021-09-21T00:32:21.22 0.1 undecidable manual P 165 0.0432 160 0.1 98
IV.FDMO.HHZ. 2021-09-21T00:32:21.85 0.1 undecidable manual P 218 0.1223 131 -0.04 98
IV.PF6.EHZ. 2021-09-21T00:32:20.95 0.1 undecidable manual P 41 0.0054 177 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:0.8 4.475E-5 0.2 AML other m 2021-09-21T00:32:25.95
IV.MML1.EHE. ML:0.6 2.775E-5 0.5 AML other m 2021-09-21T00:32:25.95
IV.FDMO.HHE. ML:0.4 1.96188055E-5 0.14 AML other m 2021-09-21T00:32:24.87
IV.FDMO.HHN. ML:0.3 1.478446E-5 0.14 AML other m 2021-09-21T00:32:25.37
IV.EL6.EHE. ML:0.7 3.09469465E-5 0.76 AML other m 2021-09-21T00:32:25.76
IV.EL6.EHN. ML:1 4.9274037E-5 1.38 AML other m 2021-09-21T00:32:37.50
IV.CING.HHE. ML:0.6 1.9949075E-5 1.44 AML other m 2021-09-21T00:32:39.04
IV.CING.HHN. ML:0.6 1.853369E-5 1.58 AML other m 2021-09-21T00:32:22.83
IV.CESI.HHE. ML:0.7 2.550329E-5 1.84 AML other m 2021-09-21T00:32:37.68
IV.CESI.HHN. ML:0.6 1.99903665E-5 1.08 AML other m 2021-09-21T00:32:35.44
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