Earthquake with magnitude of ML 1.3 on date 08-12-2021 and time 22:31:09 (UTC) in region 5 km SE Castelsantangelo sul Nera (MC)

A magnitude ML 1.3 earthquake occured in region: 5 km SE Castelsantangelo sul Nera (MC), on

  • 08-12-2021 22:31:09 (UTC)
  • 08-12-2021 23:31:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.863, 13.192 at 9 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
Castelsantangelo sul Nera MC 5 281 281
Ussita MC 10 444 725
Norcia PG 11 4957 5682
Visso MC 11 1107 6789
Montemonaco AP 12 604 7393
Montegallo AP 12 523 7916
Preci PG 13 724 8640
Arquata del Tronto AP 13 1178 9818
Bolognola MC 15 142 9960
Montefortino FM 15 1178 11138
Acquacanina MC 19 121 11259
Amandola FM 19 3629 14888
Accumoli RI 19 667 15555
Fiastra MC 20 559 16114

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
56 Km NE of Terni (111501 inhabitants)
59 Km N of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
95 Km W of Pescara (121014 inhabitants)
98 Km NW of Chieti (51815 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 1.3 2021-12-08
22:31:09
42.863 13.1922 9 2021-12-08
22:38:46
Sala Sismica INGV-Roma 98320791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-08 22:31:09 ± 0.08
Latitude 42.8630 ± 0.0045
Longitude 13.1922 ± 0.0061
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98320791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 498
Semi-minor axis of confidence ellipse (meter) 355
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) 500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.36333
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 98320791
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-08 22:38:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CAMP.HHE. 2021-12-08T22:31:22.94 0.6 undecidable manual S 154 0.3633 50 -0.59 42
IV.LNSS.HHZ. 2021-12-08T22:31:21.00 0.3 undecidable manual S 203 0.2824 50 -0.13 72
IV.SAP2.EHZ. 2021-12-08T22:31:21.24 0.3 undecidable manual S 33 0.2779 50 0.25 70
IV.MF5.EHZ. 2021-12-08T22:31:19.65 0.6 undecidable manual S 57 0.232 109 0.35 46
IV.CESI.HHE. 2021-12-08T22:31:19.89 0.6 undecidable manual S 304 0.2536 108 -0.2 47
IV.CAMP.HHE. 2021-12-08T22:31:18.72 0.3 undecidable manual P 154 0.3633 50 0.98 53
IV.CSP1.EHZ. 2021-12-08T22:31:18.80 0.3 undecidable manual S 2 0.2293 109 -0.38 68
IV.MTRA.EHZ. 2021-12-08T22:31:17.17 0.6 undecidable manual S 125 0.1835 114 -0.39 46
IV.FDMO.HHE. 2021-12-08T22:31:17.47 0.6 undecidable manual S 336 0.1898 113 -0.3 47
IV.LNSS.HHZ. 2021-12-08T22:31:16.16 0.3 undecidable manual P 203 0.2824 50 -0.19 71
IV.SAP2.EHZ. 2021-12-08T22:31:16.60 0.3 undecidable manual P 33 0.2779 50 0.33 69
IV.FEMA.HNZ. 2021-12-08T22:31:16.25 0.6 undecidable manual S 314 0.1439 119 0.06 50
IV.MF5.EHZ. 2021-12-08T22:31:15.37 0.1 undecidable manual P 57 0.232 109 0.07 97
IV.CESI.HHE. 2021-12-08T22:31:15.55 0.1 undecidable manual P 304 0.2536 108 -0.2 94
IV.MTRA.EHZ. 2021-12-08T22:31:14.05 0.1 undecidable manual P 125 0.1835 114 -0.25 95
IV.NRCA.HHZ. 2021-12-08T22:31:14.03 0.6 undecidable manual S 243 0.0639 142 0.22 49
IV.CSP1.EHZ. 2021-12-08T22:31:14.94 0.1 undecidable manual P 2 0.2293 109 -0.29 93
IV.MMO1.EHZ. 2021-12-08T22:31:14.61 0.6 undecidable manual S 70 0.1052 128 -0.33 47
IV.FDMO.HHE. 2021-12-08T22:31:14.30 0.3 undecidable manual P 336 0.1898 113 -0.12 73
IV.FEMA.HNZ. 2021-12-08T22:31:13.56 0.1 undecidable manual P 314 0.1439 119 0.06 99
IV.MC2.EHZ. 2021-12-08T22:31:13.79 0.3 undecidable manual S 357 0.0486 149 0.32 72
IV.MMO1.EHZ. 2021-12-08T22:31:12.72 0.1 undecidable manual P 70 0.1052 128 -0.06 100
IV.MC2.EHZ. 2021-12-08T22:31:12.21 0.1 undecidable manual P 357 0.0486 149 0.28 97
IV.NRCA.HHZ. 2021-12-08T22:31:12.40 0.1 undecidable manual P 243 0.0639 142 0.27 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.3 0.00032907515 0.064 AML other m 2021-12-08T22:31:14.13
IV.NRCA.HHE. ML:1.4 0.0003686539 0.0896 AML other m 2021-12-08T22:31:14.13
IV.NRCA.HHN. ML:1.5 0.0004745 0.08 AML other m 2021-12-08T22:31:14.24
IV.NRCA.HNN. ML:1.4 0.0004384958 0.0768 AML other m 2021-12-08T22:31:14.24
IV.MC2.EHE. ML:1.2 0.000297260435 0.128 AML other m 2021-12-08T22:31:14.48
IV.MC2.EHN. ML:1.4 0.0004173863 0.1536 AML other m 2021-12-08T22:31:14.18
IV.MMO1.EHE. ML:1.1 0.00014625606 0.1152 AML other m 2021-12-08T22:31:14.75
IV.MMO1.EHN. ML:0.8 8.4586525E-5 0.1408 AML other m 2021-12-08T22:31:14.79
IV.MMO1.HNE. ML:2.5 0.0040077835 0.7168 AML other m 2021-12-08T22:31:17.35
IV.MMO1.HNN. ML:2.5 0.0039863705 0.5376 AML other m 2021-12-08T22:31:16.29
IV.MTRA.EHE. ML:0.7 3.5661369E-5 0.4096 AML other m 2021-12-08T22:31:14.05
IV.MTRA.EHN. ML:0.7 4.1664435E-5 0.2816 AML other m 2021-12-08T22:31:17.97
IV.MTRA.HNE. ML:1.2 0.000127187195 0.448 AML other m 2021-12-08T22:31:23.56
IV.MTRA.HNN. ML:1.2 0.000118631375 0.4992 AML other m 2021-12-08T22:31:23.34
IV.CSP1.EHE. ML:1.7 0.00028046815 2.1248 AML other m 2021-12-08T22:31:23.30
IV.CSP1.EHN. ML:0.8 3.5613663E-5 0.3584 AML other m 2021-12-08T22:31:18.77
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