Earthquake with magnitude of ML 0.6 on date 22-08-2021 and time 22:37:39 (Italy) in region 5 km SW Serravalle di Chienti (MC)

A magnitude ML 0.6 earthquake occured in region: 5 km SW Serravalle di Chienti (MC), on

  • 22-08-2021 20:37:39 (UTC)
  • 22-08-2021 22:37:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.036, 12.924 at 12 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
Serravalle di Chienti MC 5 1070 1070
Monte Cavallo MC 8 145 1215
Pieve Torina MC 10 1458 2673
Muccia MC 11 915 3588
Sefro MC 13 422 4010
Pievebovigliana MC 14 866 4876
Fiordimonte MC 14 202 5078
Nocera Umbra PG 14 5839 10917
Valtopina PG 14 1398 12315
Camerino MC 16 6974 19289
Sellano PG 16 1079 20368
Pioraco MC 17 1134 21502
Fiuminata MC 17 1402 22904
Visso MC 18 1107 24011
Fiastra MC 19 559 24570
Preci PG 20 724 25294
Foligno PG 20 57155 82449

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
76 Km NW of Teramo (54892 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
85 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
97 Km SE of Arezzo (99543 inhabitants)
97 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 2021-08-22
20:37:39
43.036 12.9237 12 2021-08-22
20:50:05
Sala Sismica INGV-Roma 94513661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-08-22 20:37:39 ± 0.06
Latitude 43.0360 ± 0.0045
Longitude 12.9237 ± 0.0037
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94513661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 385
Semi-minor axis of confidence ellipse (meter) 252
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 179
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) 114
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 12
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
Epicentral distance of station farthest from the epicenter (degree) 0.25541
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 94513661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-08-22 20:50:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CDRU.HHZ. 2021-08-22T20:39:15.38 3.0 undecidable manual Sg 8.52 0
CH.BERNI.HHZ. 2021-08-22T20:39:11.20 3.0 undecidable manual Sn -5.34 0
IV.SELL.HHZ. 2021-08-22T20:39:08.97 3.0 negative manual Pg 17.4 0
IV.NDIM.HNZ. 2021-08-22T20:38:39.35 3.0 undecidable manual Sg 0.83 0
IX.SCL3.EHZ.02 2021-08-22T20:38:36.36 3.0 undecidable manual Pg 10.98 0
IV.RMP.HHZ. 2021-08-22T20:38:24.66 3.0 undecidable manual S 0.48 0
IV.VIVA.HHZ. 2021-08-22T20:38:22.30 3.0 undecidable manual Sn -3.19 0
IV.FREG.EHZ. 2021-08-22T20:38:16.94 3.0 undecidable manual Pn -0.89 0
TV.SF04.EHZ. 2021-08-22T20:38:15.58 3.0 undecidable manual S 1.73 0
IV.VIVA.HHZ. 2021-08-22T20:38:09.03 3.0 undecidable manual Pg 5.61 0
IV.LAV9.HNZ. 2021-08-22T20:38:05.18 3.0 negative manual Pn 0.67 0
IV.NRCA.HHZ. 2021-08-22T20:37:53.45 3.0 undecidable manual S 0
IV.TERO.HHZ. 2021-08-22T20:37:52.56 3.0 undecidable manual P 0.58 0
IV.ATCC.EHZ. 2021-08-22T20:37:49.65 0.3 undecidable manual S 306 0.2554 93 0.07 75
IV.NRCA.HHZ. 2021-08-22T20:37:49.36 3.0 undecidable manual P 0
IV.CSP1.EHZ. 2021-08-22T20:37:48.41 0.3 undecidable manual S 75 0.2131 95 0.08 75
IV.ASSB.HHZ. 2021-08-22T20:37:47.80 0.3 undecidable manual S 272 0.1934 96 0.04 77
IV.FDMO.HHZ. 2021-08-22T20:37:45.45 0.3 undecidable manual S 90 0.1196 112 -0.16 76
IV.ATCC.EHZ. 2021-08-22T20:37:45.24 0.6 positive manual P 306 0.2554 93 -0.1 50
IV.ASSB.HHZ. 2021-08-22T20:37:44.16 0.1 positive manual P 272 0.1934 96 -0.14 100
IV.MML1.EHZ. 2021-08-22T20:37:44.63 0.3 undecidable manual S 24 0.0854 128 -0.1 78
IV.CSP1.EHZ. 2021-08-22T20:37:44.81 0.3 undecidable manual P 75 0.2131 95 0.19 74
IV.FDMO.HHZ. 2021-08-22T20:37:43.00 0.6 undecidable manual P 90 0.1196 112 -0.05 52
IV.CESI.HNZ. 2021-08-22T20:37:43.87 0.3 undecidable manual S 204 0.0342 157 0.05 79
IV.CESI.HNZ. 2021-08-22T20:37:42.13 0.3 undecidable manual P 204 0.0342 157 0.11 79
IV.MML1.EHZ. 2021-08-22T20:37:42.56 0.3 undecidable manual P 24 0.0854 128 0.02 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHE. ML:0.6 4.31E-5 0.12 AML other m 2021-08-22T20:37:44.79
IV.MML1.EHN. ML:0.5 3.915E-5 0.28 AML other m 2021-08-22T20:37:44.85
IV.FDMO.HHE. ML:0.7 5.14E-5 0.14 AML other m 2021-08-22T20:37:45.57
IV.FDMO.HHN. ML:0.4 2.41E-5 0.1 AML other m 2021-08-22T20:37:45.61
IV.ASSB.HHE. ML:0.2 1.1845E-5 1.44 AML other m 2021-08-22T20:37:48.27
IV.ASSB.HHN. ML:0.4 1.415E-5 1.34 AML other m 2021-08-22T20:37:49.08
IV.NDIM.HNN. ML:3.5 0.000569 0.08 AML other m 2021-08-22T20:38:39.78
IV.NDIM.HHE. ML:3.6 0.0006105 0.06 AML other m 2021-08-22T20:38:52.64
IV.NDIM.HHN. ML:3.2 0.000301 0.58 AML other m 2021-08-22T20:38:52.74
IV.NDIM.HNE. ML:3.5 0.000575 0.06 AML other m 2021-08-22T20:38:55.04
IV.MML1.HNE. ML:1 0.000112826895 0.7808 AML other m 2021-08-22T20:37:54.39
IV.MML1.HNN. ML:0.9 9.1813845E-5 0.4992 AML other m 2021-08-22T20:37:46.59
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