Earthquake with magnitude of ML 0.8 on date 18-09-2021 and time 22:42:19 (Italy) in region 2 km W Tolentino (MC)

A magnitude ML 0.8 earthquake occured in region: 2 km W Tolentino (MC), on

  • 18-09-2021 20:42:19 (UTC)
  • 18-09-2021 22:42:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.215, 13.266 at 23 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
Tolentino MC 2 20069 20069
Belforte del Chienti MC 6 1886 21955
San Severino Marche MC 7 12726 34681
Serrapetrona MC 7 966 35647
Caldarola MC 9 1823 37470
Pollenza MC 9 6618 44088
Camporotondo di Fiastrone MC 9 563 44651
Colmurano MC 9 1263 45914
Urbisaglia MC 9 2628 48542
Ripe San Ginesio MC 12 852 49394
Treia MC 12 9403 58797
Cessapalombo MC 12 512 59309
San Ginesio MC 13 3498 62807
Loro Piceno MC 13 2401 65208
Gagliole MC 16 620 65828
Petriolo MC 16 1998 67826
Sant'Angelo in Pontano MC 17 1436 69262
Castelraimondo MC 17 4587 73849
Gualdo MC 17 815 74664
Mogliano MC 18 4696 79360
Appignano MC 18 4213 83573
Macerata MC 18 42473 126046
Camerino MC 18 6974 133020
Cingoli MC 18 10352 143372
Massa Fermana FM 19 963 144335
Montappone FM 19 1682 146017
Sarnano MC 20 3264 149281

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km SW of Ancona (100861 inhabitants)
54 Km NE of Foligno (57155 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
72 Km E of Perugia (166134 inhabitants)
73 Km S of Fano (60888 inhabitants)
82 Km SE of Pesaro (94582 inhabitants)
88 Km NE of Terni (111501 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 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 0.8 2021-09-18
20:42:19
43.2148 13.2658 23 2021-09-18
21:02:42
Sala Sismica INGV-Roma 95601161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-18 20:42:19 ± 0.25
Latitude 43.2148 ± 0.0054
Longitude 13.2658 ± 0.0210
Depth (km) 23 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95601161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1737
Semi-minor axis of confidence ellipse (meter) 407
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 1740
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 208
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 95601161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-18 21:02:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RESU.HHZ. 2021-09-18T20:45:01.75 3.0 undecidable manual Sg 21.51 0
IV.ACATE.EHZ. 2021-09-18T20:44:46.42 3.0 undecidable manual Sn -9.91 0
IV.EFIU.HHZ. 2021-09-18T20:44:37.48 3.0 undecidable manual Sn -3.15 0
IV.LPDG.HHZ. 2021-09-18T20:44:31.80 3.0 negative manual Pg 24.83 0
IV.GRI.EHZ. 2021-09-18T20:44:23.57 3.0 undecidable manual Sn -1.68 0
GU.TRAV.HHZ. 2021-09-18T20:44:16.31 3.0 undecidable manual Sn -2.71 0
HL.VLS.HHZ. 2021-09-18T20:44:08.34 3.0 positive manual Pn 4.35 0
AC.SRN.HHZ. 2021-09-18T20:43:57.50 3.0 undecidable manual Pg 13.41 0
IV.SALO.HHZ. 2021-09-18T20:43:57.65 3.0 undecidable manual Sg 14.6 0
IV.CAGR.HHZ. 2021-09-18T20:43:52.43 3.0 undecidable manual Pg 13.59 0
IV.MRGE.HHZ. 2021-09-18T20:43:51.46 3.0 positive manual Pg 17.969999 0
IV.MIGL.HHZ. 2021-09-18T20:43:50.43 3.0 undecidable manual Sn 1.19 0
IV.MGR.HHZ. 2021-09-18T20:43:49.34 3.0 undecidable manual Sn 0.15 0
OX.PLRO.HHZ. 2021-09-18T20:43:37.90 3.0 undecidable manual Sn -9.99 0
IV.MTMR.EHZ. 2021-09-18T20:43:26.03 3.0 undecidable manual Sn -1.51 0
OX.PLRO.HHZ. 2021-09-18T20:43:17.87 3.0 undecidable manual Pg 9.2 0
CR.ZAG.BHZ. 2021-09-18T20:43:15.60 3.0 undecidable manual Pg 8.63 0
IV.CAPR.HNZ. 2021-09-18T20:43:13.02 3.0 undecidable manual Pn 3.16 0
IV.VENT.EHZ. 2021-09-18T20:43:02.90 3.0 positive manual Pg 8.5 0
IV.SGG.HHZ. 2021-09-18T20:42:49.84 3.0 undecidable manual Pg 1.37 0
IV.PE3.EHZ. 2021-09-18T20:42:47.34 3.0 undecidable manual Sg 2.07 0
IV.MC2.EHZ. 2021-09-18T20:42:31.82 0.1 undecidable manual S 190 0.3085 117 0.35 91
IV.CESX.HHZ. 2021-09-18T20:42:30.27 3.0 positive manual Pn -2.47 0
IV.MML1.EHZ. 2021-09-18T20:42:29.79 0.1 undecidable manual S 245 0.2374 125 0.13 96
IV.TRE1.HNZ. 2021-09-18T20:42:29.27 3.0 undecidable manual S 0.8 0
IV.FDMO.HHZ. 2021-09-18T20:42:29.01 0.1 undecidable manual S 216 0.2203 127 -0.26 93
IV.CING.HHZ. 2021-09-18T20:42:28.21 0.1 undecidable manual S 342 0.1682 136 0.1 98
IV.CSP1.EHZ. 2021-09-18T20:42:27.34 0.1 undecidable manual S 200 0.1304 144 -0.04 99
IV.MC2.EHZ. 2021-09-18T20:42:26.31 0.1 undecidable manual P 190 0.3085 117 0.09 96
IV.MML1.EHZ. 2021-09-18T20:42:25.11 0.1 undecidable manual P 245 0.2374 125 -0.07 96
IV.COR1.EHZ. 2021-09-18T20:42:25.34 3.0 undecidable manual Pn -4.11 0
IV.FDMO.HHZ. 2021-09-18T20:42:24.63 0.1 undecidable manual P 216 0.2203 127 -0.32 92
IV.CING.HHZ. 2021-09-18T20:42:24.37 0.1 undecidable manual P 342 0.1682 136 0.08 99
IV.CSP1.EHZ. 2021-09-18T20:42:23.89 0.1 undecidable manual P 200 0.1304 144 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHE. ML:0.8 3.54E-5 0.32 AML other m 2021-09-18T20:42:28.57
IV.CING.HHN. ML:0.8 2.855E-5 0.5 AML other m 2021-09-18T20:42:28.57
IV.FDMO.HHE. ML:0.8 2.86E-5 0.12 AML other m 2021-09-18T20:42:29.15
IV.FDMO.HHN. ML:0.6 1.985E-5 0.36 AML other m 2021-09-18T20:42:29.38
IV.SGG.HNN. ML:2.8 0.00015655 0.5 AML other m 2021-09-18T20:43:03.20
IV.SGG.HNE. ML:3.2 0.000424 0.5 AML other m 2021-09-18T20:43:27.87
GU.TRAV.HHN. ML:2.9 2.075E-5 0.06 AML other m 2021-09-18T20:44:25.60
GU.TRAV.HHE. ML:2.7 1.665E-5 0.74 AML other m 2021-09-18T20:44:25.93
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