Earthquake with magnitude of ML 1.7 on date 27-09-2021 and time 20:08:46 (Italy) in region 6 km SW Treia (MC)

A magnitude ML 1.7 earthquake occured in region: 6 km SW Treia (MC), on

  • 27-09-2021 18:08:46 (UTC)
  • 27-09-2021 20:08:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.278, 13.252 at 21 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
Treia MC 6 9403 9403
Pollenza MC 8 6618 16021
San Severino Marche MC 8 12726 28747
Tolentino MC 8 20069 48816
Cingoli MC 11 10352 59168
Serrapetrona MC 12 966 60134
Appignano MC 12 4213 64347
Belforte del Chienti MC 13 1886 66233
Urbisaglia MC 14 2628 68861
Colmurano MC 15 1263 70124
Gagliole MC 15 620 70744
Caldarola MC 16 1823 72567
Apiro MC 16 2280 74847
Camporotondo di Fiastrone MC 16 563 75410
Macerata MC 17 42473 117883
Castelraimondo MC 17 4587 122470
Ripe San Ginesio MC 18 852 123322
Poggio San Vicino MC 18 246 123568
Montecassiano MC 18 7125 130693
Staffolo AN 18 2253 132946
Loro Piceno MC 18 2401 135347
Petriolo MC 19 1998 137345
Cessapalombo MC 19 512 137857
Filottrano AN 19 9499 147356
San Ginesio MC 20 3498 150854
Matelica MC 20 9981 160835

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km SW of Ancona (100861 inhabitants)
57 Km NE of Foligno (57155 inhabitants)
66 Km S of Fano (60888 inhabitants)
72 Km E of Perugia (166134 inhabitants)
76 Km SE of Pesaro (94582 inhabitants)
78 Km NW of Teramo (54892 inhabitants)
94 Km NE of Terni (111501 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 1.7 2021-09-27
18:08:46
43.2777 13.2518 21 2021-09-27
18:17:19
Sala Sismica INGV-Roma 95956901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-27 18:08:46 ± 0.1
Latitude 43.2777 ± 0.0036
Longitude 13.2518 ± 0.0062
Depth (km) 21 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95956901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 74
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 54
Number of defining phases 49
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) 0.69158
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 30
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 95956901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-27 18:17:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2021-09-27T18:09:34.09 3.0 undecidable manual Sg 4.99 0
IV.MOMA.HHZ. 2021-09-27T18:09:10.34 0.3 undecidable manual S 227 0.6871 99 0.65 57
IV.GAVE.EHZ. 2021-09-27T18:09:08.75 0.3 undecidable manual S 204 0.6412 99 0.42 63
IV.ASSB.HHZ. 2021-09-27T18:09:04.18 0.6 undecidable manual S 242 0.4919 103 0.17 45
IV.ATCC.EHZ. 2021-09-27T18:09:03.30 0.3 undecidable manual S 258 0.4551 104 0.36 65
IV.NRCA.HHZ. 2021-09-27T18:09:02.88 0.6 undecidable manual S 193 0.4551 104 -0.06 46
IV.FEMA.HNZ. 2021-09-27T18:09:00.28 3.0 undecidable manual S 0
IV.CESI.HHZ. 2021-09-27T18:09:00.70 0.6 undecidable manual S 223 0.3723 108 0.12 47
IV.MC2.EHZ. 2021-09-27T18:09:00.97 0.6 undecidable manual S 187 0.3687 108 0.48 44
IV.MOMA.HHZ. 2021-09-27T18:08:59.89 0.3 undecidable manual P 227 0.6871 99 -0.07 66
IV.ARVD.HHZ. 2021-09-27T18:08:59.40 0.6 undecidable manual S 314 0.3148 112 0.4 44
IV.LNSS.HHZ. 2021-09-27T18:08:59.80 0.3 undecidable manual P 193 0.6916 99 -0.24 63
IT.MTCL.HGZ. 2021-09-27T18:08:59.80 0.6 undecidable manual S 213 0.3381 110 0.17 47
IV.SMA1.EHZ. 2021-09-27T18:08:59.01 0.6 positive manual P 175 0.6493 99 -0.32 42
IV.GAVE.EHZ. 2021-09-27T18:08:58.98 0.6 positive manual P 204 0.6412 99 -0.2 43
IV.NARO.HHZ. 2021-09-27T18:08:57.91 0.1 undecidable manual P 305 0.59 100 -0.41 84
IV.MML1.EHZ. 2021-09-27T18:08:57.58 0.6 undecidable manual S 231 0.2617 117 0.01 49
IV.MURB.HHZ. 2021-09-27T18:08:57.66 1.0 undecidable manual P 269 0.5297 102 0.35 22
IV.FEMA.HNZ. 2021-09-27T18:08:57.63 3.0 undecidable manual P 0
IV.MMUR.HNZ. 2021-09-27T18:08:57.48 3.0 undecidable manual S 0
IV.GUMA.HHZ. 2021-09-27T18:08:57.05 0.6 undecidable manual S 164 0.223 122 0.48 45
IV.ATFO.HHZ. 2021-09-27T18:08:57.02 0.6 undecidable manual P 280 0.5027 103 0.16 45
IV.FDMO.HHZ. 2021-09-27T18:08:57.44 0.6 undecidable manual S 207 0.2689 117 -0.31 46
IV.FRON.EHZ. 2021-09-27T18:08:56.30 1.0 negative manual P 302 0.4515 104 0.3 22
IV.SNTG.HHZ. 2021-09-27T18:08:56.65 0.6 undecidable manual S 264 0.2275 122 -0.03 49
IV.ATCC.EHZ. 2021-09-27T18:08:56.11 0.6 negative manual P 258 0.4551 104 0.04 47
IV.SAP2.EHZ. 2021-09-27T18:08:56.70 0.6 undecidable manual S 149 0.2104 124 0.45 45
IV.ASSB.HHZ. 2021-09-27T18:08:56.26 0.6 undecidable manual P 242 0.4919 103 -0.42 43
IV.COR1.EHZ. 2021-09-27T18:08:55.66 0.1 undecidable manual P 333 0.3984 107 0.53 85
IV.CSP1.EHZ. 2021-09-27T18:08:55.73 0.6 undecidable manual S 190 0.1889 128 0 50
IV.NRCA.HHZ. 2021-09-27T18:08:55.72 0.1 positive manual P 193 0.4551 104 -0.35 87
IV.MF5.EHZ. 2021-09-27T18:08:54.26 0.6 positive manual P 152 0.3274 111 0.28 46
IV.MNTT.EHZ. 2021-09-27T18:08:54.62 0.6 positive manual P 131 0.331 111 0.59 43
IV.MDAR.HNZ. 2021-09-27T18:08:54.06 0.6 undecidable manual S 223 0.116 143 -0.17 49
IV.EL6.EHZ. 2021-09-27T18:08:54.06 0.6 undecidable manual S 295 0.1205 142 -0.25 49
IV.CESI.HHZ. 2021-09-27T18:08:54.47 1.0 undecidable manual P 223 0.3723 108 -0.23 23
IV.PF6.EHZ. 2021-09-27T18:08:54.37 0.6 undecidable manual S 197 0.1457 136 -0.42 46
IV.AOI.HHE. 2021-09-27T18:08:54.34 0.1 undecidable manual P 43 0.3723 108 -0.37 88
IV.ARVD.HHZ. 2021-09-27T18:08:54.02 0.6 negative manual P 314 0.3148 112 0.23 46
IV.MC2.EHZ. 2021-09-27T18:08:54.49 0.6 positive manual P 187 0.3687 108 -0.16 46
IV.MMUR.HNZ. 2021-09-27T18:08:54.53 3.0 undecidable manual P 0
IV.CING.HHZ. 2021-09-27T18:08:53.97 0.6 undecidable manual S 337 0.1061 146 -0.08 50
IT.MTCL.HGZ. 2021-09-27T18:08:53.82 0.3 undecidable manual P 213 0.3381 110 -0.34 67
IV.GUMA.HHZ. 2021-09-27T18:08:52.49 0.1 positive manual P 164 0.223 122 0.1 97
IV.SAP2.EHZ. 2021-09-27T18:08:52.51 0.1 undecidable manual P 149 0.2104 124 0.31 93
IV.FDMO.HHZ. 2021-09-27T18:08:52.84 0.3 negative manual P 207 0.2689 117 -0.23 70
IV.MNTP.HNZ. 2021-09-27T18:08:52.31 0.1 undecidable manual P 131 0.2113 124 0.09 98
IV.MML1.EHZ. 2021-09-27T18:08:52.86 0.3 positive manual P 231 0.2617 117 -0.1 72
IV.SNTG.HHZ. 2021-09-27T18:08:52.42 0.3 positive manual P 264 0.2275 122 -0.03 74
IV.EL6.EHZ. 2021-09-27T18:08:51.09 0.1 positive manual P 295 0.1205 142 0.01 100
IV.PF6.EHZ. 2021-09-27T18:08:51.01 0.1 undecidable manual P 197 0.1457 136 -0.35 93
IV.CSP1.EHZ. 2021-09-27T18:08:51.79 0.1 positive manual P 190 0.1889 128 -0.12 97
IV.CING.HHZ. 2021-09-27T18:08:50.87 0.1 negative manual P 337 0.1061 146 -0.06 100
IV.MDAR.HNZ. 2021-09-27T18:08:50.94 0.1 negative manual P 223 0.116 143 -0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CING.HHN. ML:1.7 0.00033 0.44 AML other m 2021-09-27T18:08:54.18
IV.CING.HHE. ML:1.6 0.0002755 0.36 AML other m 2021-09-27T18:08:54.26
IV.EL6.EHE. ML:1.9 0.0005505 0.3 AML other m 2021-09-27T18:08:54.71
IV.EL6.EHN. ML:1.7 0.0003445 0.22 AML other m 2021-09-27T18:08:54.94
IV.CSP1.EHN. ML:2.1 0.000733 0.4 AML other m 2021-09-27T18:08:56.29
IV.CSP1.EHE. ML:2.1 0.000675 0.54 AML other m 2021-09-27T18:08:56.11
IV.SNTG.HHE. ML:1.5 0.0001395 0.16 AML other m 2021-09-27T18:08:57.10
IV.SNTG.HHN. ML:1.4 0.0001225 0.26 AML other m 2021-09-27T18:08:57.04
IV.GUMA.HNN. ML:1.8 0.0003025 0.14 AML other m 2021-09-27T18:08:57.36
IV.GUMA.HHN. ML:1.9 0.0003395 0.18 AML other m 2021-09-27T18:08:57.36
IV.MDAR.HNN. ML:2.2 0.0010515 1.26 AML other m 2021-09-27T18:08:57.65
IV.MDAR.HNE. ML:2.2 0.000988 0.52 AML other m 2021-09-27T18:08:57.65
IV.SAP2.EHE. ML:1.5 0.0001494 0.24 AML other m 2021-09-27T18:08:57.90
IV.FDMO.HHE. ML:1.9 0.0003445 1.8 AML other m 2021-09-27T18:08:58.91
IV.FDMO.HHN. ML:1.7 0.0002225 1.8 AML other m 2021-09-27T18:08:58.02
IV.MML1.HNN. ML:1.8 0.000257 0.16 AML other m 2021-09-27T18:08:58.11
IV.MML1.EHN. ML:1.8 0.000241 0.16 AML other m 2021-09-27T18:08:58.11
IV.MML1.HNE. ML:2 0.000392 0.22 AML other m 2021-09-27T18:08:58.15
IV.MML1.EHE. ML:2 0.0004145 0.24 AML other m 2021-09-27T18:08:58.04
IV.SAP2.EHN. ML:2.2 0.000879 0.14 AML other m 2021-09-27T18:08:59.07
IV.ARVD.HHE. ML:1.1 3.9E-5 1.22 AML other m 2021-09-27T18:08:59.91
IV.ARVD.HHN. ML:0.9 3.205E-5 1.38 AML other m 2021-09-27T18:08:59.86
IV.GUMA.HHE. ML:2 0.0004185 1.72 AML other m 2021-09-27T18:09:00.10
IV.GUMA.HNE. ML:1.7 0.000257 1.72 AML other m 2021-09-27T18:09:00.97
IV.CESI.HHN. ML:1.8 0.000169 0.22 AML other m 2021-09-27T18:09:01.19
IV.CESI.HHE. ML:1.7 0.0001585 0.76 AML other m 2021-09-27T18:09:01.03
IV.MNTT.EHE. ML:2 0.0003525 0.2 AML other m 2021-09-27T18:09:01.74
IV.MNTT.EHN. ML:1.8 0.000232 0.48 AML other m 2021-09-27T18:09:03.85
IV.ATCC.EHE. ML:1.3 5.135E-5 1.44 AML other m 2021-09-27T18:09:04.83
IV.NRCA.HHE. ML:1.6 0.0001045 0.96 AML other m 2021-09-27T18:09:04.69
IV.NRCA.HHN. ML:1.7 0.0001082 0.08 AML other m 2021-09-27T18:09:04.81
IV.ASSB.HHN. ML:1.4 5.48E-5 0.16 AML other m 2021-09-27T18:09:05.21
IV.FRON.EHN. ML:1 2.495E-5 0.46 AML other m 2021-09-27T18:09:05.60
IV.ASSB.HHE. ML:1.4 6.1E-5 0.54 AML other m 2021-09-27T18:09:06.38
IV.ATCC.EHN. ML:1.3 4.455E-5 0.98 AML other m 2021-09-27T18:09:06.51
IV.MURB.HHE. ML:1.7 0.00010125 0.28 AML other m 2021-09-27T18:09:06.93
IV.MURB.HHN. ML:1.5 6.3E-5 1.76 AML other m 2021-09-27T18:09:07.01
IV.FRON.EHE. ML:1 2.62E-5 0.48 AML other m 2021-09-27T18:09:07.52
IV.GAVE.EHN. ML:1.7 8.185E-5 0.46 AML other m 2021-09-27T18:09:09.77
IV.GAVE.EHE. ML:1.7 7.38E-5 0.22 AML other m 2021-09-27T18:09:10.43
IV.SMA1.EHE. ML:1.5 4.875E-5 0.72 AML other m 2021-09-27T18:09:10.57
IV.SMA1.EHN. ML:1.4 4.035E-5 0.62 AML other m 2021-09-27T18:09:11.41
IV.MOMA.HHE. ML:1.4 3.405E-5 0.14 AML other m 2021-09-27T18:09:11.51
IV.MOMA.HHN. ML:1.6 5.1E-5 0.44 AML other m 2021-09-27T18:09:12.54
IV.LNSS.HHN. ML:1.6 4.92E-5 0.96 AML other m 2021-09-27T18:09:12.23
IV.LNSS.HHE. ML:1.4 3.795E-5 0.54 AML other m 2021-09-27T18:09:14.72
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