Earthquake with magnitude of ML 1.2 on date 14-09-2021 and time 13:52:40 (Italy) in region 3 km NE Ussita (MC)

A magnitude ML 1.2 earthquake occured in region: 3 km NE Ussita (MC), on

  • 14-09-2021 11:52:40 (UTC)
  • 14-09-2021 13:52:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.961, 13.175 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
Ussita MC 3 444 444
Bolognola MC 6 142 586
Castelsantangelo sul Nera MC 8 281 867
Visso MC 8 1107 1974
Acquacanina MC 8 121 2095
Fiastra MC 9 559 2654
Fiordimonte MC 11 202 2856
Sarnano MC 13 3264 6120
Pievebovigliana MC 14 866 6986
Montefortino FM 14 1178 8164
Pieve Torina MC 14 1458 9622
Montemonaco AP 14 604 10226
Preci PG 14 724 10950
Monte Cavallo MC 15 145 11095
Amandola FM 15 3629 14724
Muccia MC 17 915 15639
Gualdo MC 18 815 16454
Cessapalombo MC 18 512 16966
Montegallo AP 18 523 17489
Comunanza AP 20 3166 20655
Norcia PG 20 4957 25612

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
55 Km NW of Teramo (54892 inhabitants)
62 Km NE of Terni (111501 inhabitants)
66 Km E of Perugia (166134 inhabitants)
70 Km N of L'Aquila (69753 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
94 Km NW of Montesilvano (53738 inhabitants)
99 Km S of Fano (60888 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 1.2 2021-09-14
11:52:40
42.9607 13.1752 9 2021-09-14
12:02:35
Sala Sismica INGV-Roma 95421091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-14 11:52:40 ± 0.22
Latitude 42.9607 ± 0.0036
Longitude 13.1752 ± 0.0111
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 95421091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 848
Semi-minor axis of confidence ellipse (meter) 305
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 850
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 159
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.21314
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 95421091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-14 12:02:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SARZ.HHZ. 2021-09-14T11:54:33.71 3.0 undecidable manual Sn 8.77 0
IV.VOBA.EHZ. 2021-09-14T11:54:31.19 3.0 undecidable manual Sg 15.74 0
IV.CADC.EHZ. 2021-09-14T11:54:29.00 3.0 undecidable manual Sg 12.48 0
IV.LADO.EHZ. 2021-09-14T11:54:27.14 3.0 undecidable manual Sn -5.13 0
GU.RNCA.HHZ. 2021-09-14T11:54:23.99 3.0 undecidable manual Sn 3.91 0
OT.CGL1.HHZ. 2021-09-14T11:54:22.93 3.0 undecidable manual Sg 8.53 0
IV.USI.HHZ. 2021-09-14T11:54:18.79 3.0 undecidable manual Sn -8.98 0
AC.KBN.HHZ. 2021-09-14T11:54:12.06 3.0 undecidable manual Pg 12.29 0
IV.TDS.HHZ. 2021-09-14T11:54:11.00 3.0 undecidable manual Sn -7 0
SL.LJU.BHZ. 2021-09-14T11:54:03.62 3.0 undecidable manual Sn -2.84 0
IV.HPAC.HHZ. 2021-09-14T11:54:01.10 3.0 negative manual Pn -4.9 0
IV.PZUN.HHZ. 2021-09-14T11:53:58.89 3.0 undecidable manual Sg 6.49 0
CH.BNALP.HHZ. 2021-09-14T11:53:58.06 3.0 negative manual Pn 1.44 0
IV.CDRU.HHZ. 2021-09-14T11:53:56.95 3.0 undecidable manual Sg 6.08 0
GU.IMI.HHZ. 2021-09-14T11:53:53.56 3.0 negative manual Pg 12.58 0
IV.CAGR.HHZ. 2021-09-14T11:53:53.14 3.0 undecidable manual Pn 0.34 0
AC.VLO.HHZ. 2021-09-14T11:53:49.72 3.0 undecidable manual Pn 0.99 0
GU.RNCA.HHZ. 2021-09-14T11:53:47.36 3.0 undecidable manual Pg 13.98 0
IV.SENA.HHZ. 2021-09-14T11:53:46.91 3.0 undecidable manual Pg 11.37 0
IV.MDI.HHZ. 2021-09-14T11:53:41.31 3.0 undecidable manual Pn 4.07 0
IT.FIE.HGZ. 2021-09-14T11:53:37.71 3.0 undecidable manual Sn 1.85 0
IV.USI.HHZ. 2021-09-14T11:53:35.67 3.0 positive manual Pn -2.03 0
IX.LGS3.HNZ.01 2021-09-14T11:53:32.68 3.0 undecidable manual Sn -4.73 0
IV.CRTC.HHZ. 2021-09-14T11:53:15.42 3.0 undecidable manual S 1.52 0
IV.PII.HHZ. 2021-09-14T11:53:15.81 3.0 positive manual Pn 0.74 0
IV.VIVA.HHZ. 2021-09-14T11:53:13.77 3.0 undecidable manual S -4.28 0
IV.OSSC.HHZ. 2021-09-14T11:53:10.31 3.0 positive manual Pg 2.92 0
IV.VIVA.HHZ. 2021-09-14T11:52:55.82 3.0 positive manual P -2.71 0
IV.EL6.EHZ. 2021-09-14T11:52:54.67 3.0 undecidable manual S 0
IV.EL6.EHZ. 2021-09-14T11:52:51.61 3.0 undecidable manual P 0
IV.MML1.EHZ. 2021-09-14T11:52:49.01 0.3 undecidable manual S 316 0.2131 111 0.18 72
IV.SAP2.EHZ. 2021-09-14T11:52:48.02 3.0 undecidable manual S 0.7 0
IV.NRCA.HHZ. 2021-09-14T11:52:46.44 0.3 undecidable manual S 199 0.1349 121 0.34 71
IV.CSP1.EHZ. 2021-09-14T11:52:46.35 0.6 undecidable manual S 9 0.1331 122 0.31 47
IV.PP3.EHZ. 2021-09-14T11:52:45.25 3.0 undecidable manual P -0.52 0
IV.FDMO.HHZ. 2021-09-14T11:52:44.88 0.3 undecidable manual S 320 0.0989 129 -0.11 75
IV.MML1.EHZ. 2021-09-14T11:52:44.92 0.1 undecidable manual P 316 0.2131 111 -0.19 96
IV.MC2.EHZ. 2021-09-14T11:52:43.56 0.3 undecidable manual S 168 0.0504 148 -0.17 74
IV.CSP1.EHZ. 2021-09-14T11:52:43.56 0.1 undecidable manual P 9 0.1331 122 0.05 100
IV.NRCA.HHZ. 2021-09-14T11:52:43.48 0.1 undecidable manual P 199 0.1349 121 -0.06 100
IV.MC2.EHZ. 2021-09-14T11:52:42.13 0.3 negative manual P 168 0.0504 148 -0.04 76
IV.FDMO.HHZ. 2021-09-14T11:52:42.56 1.0 positive manual P 320 0.0989 129 -0.34 24
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.3 0.000272 1.7 AML other m 2021-09-14T11:52:45.94
IV.FDMO.HHE. ML:1 0.000139 1.26 AML other m 2021-09-14T11:52:45.96
IV.CSP1.EHN. ML:1.4 0.0002475 1 AML other m 2021-09-14T11:52:47.53
IV.NRCA.HHN. ML:1.2 0.0001525 0.8 AML other m 2021-09-14T11:52:47.25
IV.CSP1.EHE. ML:1.2 0.000177 0.46 AML other m 2021-09-14T11:52:48.72
IV.NRCA.HHE. ML:1.2 0.0001615 1.34 AML other m 2021-09-14T11:52:48.90
IV.MML1.EHN. ML:0.9 5.16E-5 0.96 AML other m 2021-09-14T11:52:50.18
IV.MML1.EHE. ML:0.8 4.12E-5 1.02 AML other m 2021-09-14T11:52:51.65
IV.CRTC.HHN. ML:1.9 8.215E-5 0.26 AML other m 2021-09-14T11:53:19.93
IV.CRTC.HHE. ML:1.9 8.03E-5 1.1 AML other m 2021-09-14T11:53:21.04
IV.VIVA.HHN. ML:3 0.0006935 0.08 AML other m 2021-09-14T11:53:27.06
IV.VIVA.HHE. ML:3 0.00058 1.28 AML other m 2021-09-14T11:53:32.89
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